CN108031429A - A kind of preparation method of modified steel scoria for removing arsenic in water - Google Patents
A kind of preparation method of modified steel scoria for removing arsenic in water Download PDFInfo
- Publication number
- CN108031429A CN108031429A CN201711342265.XA CN201711342265A CN108031429A CN 108031429 A CN108031429 A CN 108031429A CN 201711342265 A CN201711342265 A CN 201711342265A CN 108031429 A CN108031429 A CN 108031429A
- Authority
- CN
- China
- Prior art keywords
- arsenic
- water
- preparation
- slag
- modified steel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/0203—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of metals not provided for in B01J20/04
- B01J20/0225—Compounds of Fe, Ru, Os, Co, Rh, Ir, Ni, Pd, Pt
- B01J20/0229—Compounds of Fe
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28054—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their surface properties or porosity
- B01J20/28057—Surface area, e.g. B.E.T specific surface area
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/48—Sorbents characterised by the starting material used for their preparation
- B01J2220/4875—Sorbents characterised by the starting material used for their preparation the starting material being a waste, residue or of undefined composition
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/103—Arsenic compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Water Treatment By Sorption (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The present invention relates to a kind of preparation method of the modified steel scoria for removing arsenic in water, specifically comprise the following steps：Slag is cleaned, and is dried to constant weight, it is spare；The slag to dry to constant weight is added in the nutrient solution containing iron-oxidizing bacteria, erodes immersion, until obtaining modified steel scoria.Beneficial effects of the present invention are：Modified steel scoria prepared by the present invention has method of modifying easy, and of low cost, raw material is easy to get, and effect of removing arsenic it is obvious the features such as, and raw steel slag phase ratio, material after modified improves the adsorption capacity of arsenic 32.2% 41.3%, in addition, adsorption effect be influenced by temperature it is smaller, and saturation absorption after in neutral water body, the arsenic adsorbed will not desorb, modified steel scoria arsenic removal is efficient, and saturated extent of adsorption is big, material settling out after absorption, non-secondary pollution, and the recycling for realizing solid waste recycles.
Description
Technical field
The present invention relates to the preparation side of water-treatment technology field, more particularly to a kind of modified steel scoria for removing arsenic in water
Method.
Background technology
Abundance of the arsenic in the earth's crust be not high, but due to hydrogeological reason, in the region-by-region water body of natural endowment lower part
Arsenic is enriched with extremely, makes occur the exceeded phenomenon of arsenic content in drinking water.In addition, a large amount of of human production activity, especially lean ore open
Adopt and use, also result in a large amount of arsenic and be developed with host element into environment.In China Inner Mongol, Xinjiang, Shanxi, expensive
The ground such as state, Taiwan have had been found that drinking water arsenic poisoning case.Therefore, how to remove the arsenic in water body is to study both at home and abroad at present
Emphasis.
At present, the Patents documents both at home and abroad in relation to the removal of water body arsenic pollution are as follows：
200510110226.8 document of Application No. discloses a kind of preparation method of iron carrying active carbon dearsenic adsorber, should
Method is characterized in that being made of the following steps：The raw coal that ash content is high, volatility is high is chosen from the coal of Datong Coal Mining production
Raw materials for production as activated carbon；The raw coal filtered out is worn into 80-125 mesh powders；Proportionally mix raw coal powder, oxygen
Change iron, binding agent, dried after being shaped on forming machine stand-by；Mixture is first carbonized into post activation；12-40 is crushed to through beating crusher
After mesh, the activated carbon arsenic-removing adsorption agent of granular iron oxide bearing can be prepared through pickling and washing.The adsorbent prepared
The arsenic in water removal or in air flue gas can be effectively removed, but preparation process is complicated.
200910238483.8 document of Application No. discloses a kind of mineral material for removing arsenic and preparation method thereof, its feature exists
In, it is characterised in that：Using kaolin and siderite as main raw material(s), using shells such as peanut shells as pore creating material, and it is aided with
Cullet etc. are used as adhesives system, and by chemical activation and high-temperature calcination, arsenic removal material is prepared.In the present invention, arsenic removal
The preparation method of material is simple and practicable, and manufacture cost is low, and practical application result of the test shows that the arsenic removal material has preferable inhale
Attached effect of removing arsenic.
200910244332.3 document of Application No. discloses a kind of compound arsenic-removing adsorbent and preparation method thereof, the arsenic removal
Adsorbent is characterized in containing metal composite oxide and binding agent.Absorption property is high, there is height to inhale the arsenic in drinking water
Attached selectivity, and adsorption capacity is high, it is big that adsorption particle is either in dampness its intensity in drying regime, makes
Used time Particle Breakage rate is low, without the dissolution of adsorbent, suitable for using for a long time and in the case where water flow pressure changes greatly.
201110197594.6 document of Application No. discloses a kind of method for handling arsenic in waste water, it is characterised in that：To
The solution containing iron ion is added in arsenic containing solution, at 15-75 DEG C, it is 1-5 to make Fe ions and the molar ratio of As ions, and stirring is equal
After even, the pH value that reaction system is adjusted with alkali is 2-12, and when making reaction system the reaction was continued under this pH value 0.17-72 small,
Form the co-precipitate containing arsenic of the first step；Continue to add metal ion in the co-precipitate containing arsenic formed to the first step molten
Liquid, at 15-75 DEG C, the molar ratio for making metal ion and As ions is 0.1-5, and the pH value that reaction system is then adjusted with alkali is
2-12, forms final co-precipitate containing arsenic, makes the solid waste containing arsenic of As ions formation high stability in waste water.The present invention
The use of two step coprecipitation methods improves the stability of the solid waste containing arsenic while ensure that waste water effect of removing arsenic, greatly
The big risk for reducing arsenic-containing waste residue secondary pollution.
201210015646.8 document of Application No. discloses that a kind of the invention discloses a kind of preparation side of arsenic removal resin
Method, it is characterised in that comprise the following steps：(1) powder with arsenic removal function is prepared；(2) by prepared suspension or dry powder
Prepared composition dephasing is uniformly mixed with adhesive and pore-foaming agent；(3) continuous phase incompatible with dispersed phase is prepared；(4) will be above-mentioned
Scattered to be added in continuous phase, stirring makes it be dispersed into the ball of suitable particle size, and it is cured balling-up under certain condition
Bead shaped particle；(5) with materials such as the dispersant in solvent removing ball bead shaped particle, pore-foaming agents, being obtained after activated processing to go
The resin of arsenic ion in water removal and juice.This method prepares arsenic removal resin, and preparation method is simple, gold in resin category content height,
It is big to arsenic ion adsorption capacity, can effectively remove the micro arsenic ion in solution, have it is pollution-free, efficient, service life is long,
The advantages that can recycling.
201210224268.4 document of Application No. discloses a kind of application of hollow fiber nanofiltration membrane in removing arsenic in water,
The present invention provides a kind of while remove the application of the hollow fiber nanofiltration membrane of trivalent arsenic and pentavalent arsenic in water body.In the present invention
Hollow fiber NF membrane is using low pressure hollow sulfonated polymer coating composite nanometer filtering film made from coating, including hollow fibre
What is scribbled on dimension ultrafiltration membranes and its inner surface efficiently separates layer；It is the manganese dioxide containing oxidable trivalent arsenic to efficiently separate layer
The sulfonated polymer coating of micro-and nano-particles.Hollow fiber nanofiltration membrane of the present invention can effectively retain the arsenic in water body, processing
Arsenic content in water body is 10~10000 μ g/L.Removing arsenic in water of the present invention is in the case where operating pressure is only 3~10bar, its arsenic
For rejection more than 95%, infiltration water yield is big, up to more than 10L/m2hbar, for business tablet NF membrane,
Higher osmotic water flux can be obtained under relatively low operating pressure, while obtains the arsenic rejection suitable with commercial nanofiltration membrane.
201310153057.0 document of Application No. discloses a kind of ferro manganese composite oxides and preparation method thereof and water body
The application of arsenic removal.It is characterized in that soaking natural iron content manganese ore using sulfuric acid solution, then changed by adding molysite in solution
Ferromanganese ion molar ratio, then separate out precipitation, filtering, drying and calcining through sodium carbonate and ferro manganese composite oxides are prepared.When molten
The molar ratio of ferromanganese ion is 12 in liquid:1 and 4:When 1, the ferro manganese composite oxides being prepared are respectively to As (III) and As
(V) removal ability is best.The ferro manganese composite oxides that the present invention is prepared, arsenic removal is efficient, and saturated extent of adsorption is big, pH,
Acclimation temperature scope is wide, and performance is stablized, and can preferably meet the needs that current water body arsenic pollution is administered.
201410507171.3 document of Application No. disclose it is a kind of the present invention relates to a kind of Removal of Arsenic in Drinking Water adsorbent and
Its preparation method, belongs to water-treatment technology field.The Removal of Arsenic in Drinking Water adsorbent includes following component in parts by weight：
2-5 parts of nano-aluminium oxide, 1-3 parts of cationic polyacrylamide, 60-80 parts of bone carbon, 30-50 parts of seawood meal, polymeric silicicacid
0.1-0.5 parts of ferro-aluminum, 2-4 parts of Pioloform, polyvinyl acetal.Removal of Arsenic in Drinking Water adsorbent of the present invention is high to the removal rate of arsenic in water body,
Grain intensity is good, non-secondary pollution, meets the current needs for removing water body arsenic and being up to state standards；Meanwhile it is used as system by the use of seaweed
The raw material of standby arsenic-removing adsorption agent, realizes waste utilization, reduces production cost, is conducive to protect biology in the water environment of ocean
Chain, has important economic benefit and environmental benefit.
201410507173.2 document of Application No. discloses a kind of natural ore soil load nanometer arsenic removal material and its preparation
Method, belongs to water-treatment technology field.Natural ore soil load nanometer arsenic removal material is including in parts by weight such as the following group
Point：40-60 parts of hydroxyapatite, 30-50 parts attapulgite modified, 1-3 parts of nano-titanium dioxide, nano ceric oxide 0.8-
2.5 parts, 3-6 parts of nano imvite, 0.1-0.5 parts of bodied ferric sulfate, 4-7 parts of Ludox.Natural ore soil of the present invention loads nanometer
Arsenic removal material is high to the removal rate of arsenic in water body, and mechanical strength is good, and can effectively prevent the reunion of nano material；Meanwhile this
Invention product structure is stablized, and regenerability is good, non-secondary pollution, application easy to spread.
201510025047.8 document of Application No. discloses a kind of system of the cleansed resin for underground removing arsenic from water fluorine removal
Preparation Method, belongs to resin material technical field.It is characterized in that it is prepared by following steps：By titanium dioxide nanoparticle
It is added to the water, stirs evenly, obtains tio_2 suspension；Graphene oxide, acetic acid, chitosan are added to the water, stirred
After mixing uniformly, then tio_2 suspension is added dropwise, obtains hybrid particles suspension；Polyethylene is added in hybrid particles suspension
Alcohol, sodium chloride, obtain reacting initial liquid；Take divinylbenzene, divinyl toluene, methyl methacrylate, allyl acetate, first
Base vinyl pyrrolidone after mixing, adds pore-foaming agent, obtains organic phase solution；Organic phase solution is added to reaction
In initial liquid, glutaraldehyde, di-tert-butyl dicarbonate are added, temperature reaction, filters out insoluble matter, washes with water, and vacuum drying, obtains
To adsorbent.
201510170469.4 document of Application No. is disclosed the invention belongs to water-treatment technology field, is specifically one
Arsenic removing apparatus of the kind using iron and manganese oxides granulation as carrier.The device uses the iron and manganese oxides from deferrization and demanganization water factory
The granulation being process is used as water quality arsenic-removing adsorption agent as carrier so that recycling sludge, not only realize waste utilization and
And there is effectively removing arsenic ability.The present apparatus is made of filter column, water tank, pipe valve substantially, and the present apparatus passes through iron and manganese oxides system
Grain is filtered to remove arsenic in underground water for the filtering layer of carrier, and filter uses two kinds of different water intake modes, upward flow and it is lower to
Stream is respectively used to contain other polluter iron, manganese, the relatively low and higher situation of ammonia-nitrogen content in As groundwater.Present apparatus economy has
Imitate, is easy to operate, can provide enough and reach to lack the resident from far-off regions of central water supply system for the purpose of drinking and cook
To country《Standards for drinking water quality》(GB5749-2006) water.
Though the material of above-mentioned removal arsenic in water body has arsenic higher removal rate, its respective preparation process is more complicated
Or prepare costly or use mineral as raw material.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of preparation method of the modified steel scoria for removing arsenic in water, with
Overcome above-mentioned deficiency of the prior art.
The technical solution that the present invention solves above-mentioned technical problem is as follows：A kind of preparation of modified steel scoria for removing arsenic in water
Method, specifically comprises the following steps：
S100, cleaned slag, and is dried to constant weight, spare；
The slag to dry to constant weight, be added in the nutrient solution containing iron-oxidizing bacteria by S200, erodes immersion, until
To modified steel scoria.
The present invention technical principle be：
After measured, it can form co-precipitation containing substantial amounts of iron calcium etc. mineral matter in slag with arsenic and achieve the purpose that removal,
Modification is eroded to slag by iron-oxidizing bacteria, first, being eroded to the surface of slag, increases its specific surface area, second, iron
Oxidation bacteria is Fe (III) by aoxidizing the Fe in slag (II), while growth energy is obtained, improves Fe (III) in slag
Content, so as to reach more preferable removal effect to the arsenic in water body.
The beneficial effects of the invention are as follows：The solid waste slag that the present invention is produced using steel mill passes through as main material
Iron-oxidizing bacteria erodes raw material modification, obtains the modified steel scoria for removing arsenic in water, wherein, modification prepared by the present invention
Slag has the features such as method of modifying is easy, of low cost, raw material is easy to get, and effect of removing arsenic is obvious, and raw steel slag phase ratio, through 3
A month modified material improves 32.2%-41.3% to the adsorption capacity of arsenic, in addition, adsorption effect be influenced by temperature compared with
It is small, and after saturation absorption in neutral water body, the arsenic adsorbed will not desorb, and modified steel scoria arsenic removal is efficient, saturation absorption
Amount is big, material settling out after absorption, non-secondary pollution, and the recycling for realizing solid waste recycles；Counted according to mass balance
Calculate, on the premise of the exchangeability quality of arsenic removal material is ensured, 1200- in water can be adsorbed per the modified steel scoria of the 1g present invention
The arsenic of 1700 μ g.
Further, in the S100, the slag need to first pass through deionized water and wash to pH7.5-8.5, then at 103 DEG C-
Drying to constant weight at 105 DEG C.
Further had the beneficial effect that using above-mentioned：Washing and drying are to remove the basic species such as some solubility calciums
Matter, makes material be maintained at the scope of pH7.5-8.5, prevents the pH of the dissolution change solution in the immersion in later stage, influences the life of bacterium
It is long.
Further, in the S200, the time for eroding immersion is more than 30 days.
Further, in the S200, after the slag to dry to constant weight is added in the nutrient solution containing iron-oxidizing bacteria, need by
It, which is placed in constant-temperature shaking incubator, erodes immersion.
Further, in the S200, the specific preparation process of the nutrient solution containing iron-oxidizing bacteria includes the following steps：
S210, choose one piece of iron block to get rusty, and is soaked 7 days or so in tap water, and obtained water sample is filtered,
Obtain source water sample；
Source water sample, be coated on Selective agar medium and cultivated by S220, until Selective agar medium surface grows white
Filmanetous colony；
S230, will continue to cultivate on white Filamentous colony inoculation to new Selective agar medium, until Selective agar medium surface
Grow circular maroon bacterium colony；
S240, fall into circular maroon bacterium colony in enriched medium and cultivated, until it is existing to occur layering in blake bottle
As upper strata is faint yellow settled solution, and lower floor is red-brown precipitation；
S250, the faint yellow settled solution of absorption are cultivated into enriched medium, obtain bacterium solution.
Further, in the S220, after source water sample is coated on Selective agar medium, Selective agar medium need to be placed in
Culture is inverted in 25 DEG C of constant incubators, until Selective agar medium surface grows white filmanetous colony.
Further, in the S250, the time that faint yellow settled solution is cultivated in enriched medium is more than or equal to one
Cycle, wherein, a cycle is 12 days.
Further, the time that the faint yellow settled solution is cultivated in enriched medium is a cycle.
Embodiment
The principles and features of the present invention are described below, and the given examples are served only to explain the present invention, is not intended to limit
Determine the scope of the present invention.
Embodiment 1
S100, take 200g slags to be washed by deionized water to pH near neutrals, and is dried in 105 DEG C of thermostatic drying chambers
Constant weight, slag is 100-200 mesh, spare；
S200, obtain one piece of iron block to get rusty first, is soaked 7 days or so in tap water, obtained water sample was carried out
Filter, the source water sample using this as microorganism；Selective agar medium is prepared, its component is as follows：0.5g/L NaNO3, 0.2g/L
CaCl2·2H2O, 0.5g/L KH2PO4·3H2O, 0.5g/L (NH4)2SO4, 0.5g/L MgSO4·7H2O, 10g/L
FeC6H5O7·NH4OH (ferric citrate), 20g/L agar powders, and corresponding enriched medium；Source water sample is coated on
On Selective agar medium, culture is inverted in 25 DEG C of constant incubators, until media surface grows white filmanetous colony；Picking list
Continue to cultivate on a Filamentous colony inoculation to new Selective agar medium of white, until media surface grows circular maroon bacterium
Fall；The single circular maroon bacterium colony of picking enters in enriched medium to be cultivated；It is existing to occur layering after culture 9 days, in blake bottle
As upper strata is faint yellow settled solution, and lower floor is red-brown precipitation, and is not connect in the blake bottle of bacterium colony, and nutrient solution remains
Transparent rufous, without lamination, the only a little precipitation in bottom；200 μ L upper strata bacterium solutions are drawn to 100mL enriched mediums
In, after cultivating 12 days, the precipitation capacity in blake bottle does not reach stable in change, using 12 days as one in follow-up incubation
In the cycle, periodically add nutrient solution, add 100mL every time；The bacterium solution 2mL of culture 12 days is taken to add the 1L enriched mediums newly configured
In, slag spare in S100 is added thereto after cultivating a cycle, and immersion training is carried out in 25 DEG C of constant-temperature shaking incubators
Support and be modified, each cycle adds 100mL enriched mediums thereto, takes out material after one month modified, cleans and dry, obtain
Modified steel scoria.
Arsenic removal material prepared by the present embodiment, in laboratory conditions, with 0.1g materials to containing As (V)/As (III)
The simulated wastewater of 200 μ g/L is adsorbed.Obtain being As (III) to the saturated extent of adsorption of arsenic：1291.4 μ g/g and As (V)：
1433.4μg/g。
Embodiment 2
S100, take 200g slags to be washed by deionized water to pH near neutrals, and is dried in 105 DEG C of thermostatic drying chambers
Constant weight, slag is 100-200 mesh, spare；
S200, obtain one piece of iron block to get rusty first, is soaked 7 days or so in tap water, obtained water sample was carried out
Filter, the source water sample using this as microorganism；Selective agar medium is prepared, its component is as follows：0.5g/L NaNO3, 0.2g/L
CaCl2·2H2O, 0.5g/L KH2PO4·3H2O, 0.5g/L (NH4)2SO4, 0.5g/L MgSO4·7H2O, 10g/L
FeC6H5O7·NH4OH (ferric citrate), 20g/L agar powders, and corresponding enriched medium；Source water sample is coated on
On Selective agar medium, culture is inverted in 25 DEG C of constant incubators, until media surface grows white filmanetous colony；Picking list
Continue to cultivate on a Filamentous colony inoculation to new Selective agar medium of white, until media surface grows circular maroon bacterium
Fall；The single circular maroon bacterium colony of picking enters in enriched medium to be cultivated；It is existing to occur layering after culture 9 days, in blake bottle
As upper strata is faint yellow settled solution, and lower floor is red-brown precipitation, and is not connect in the blake bottle of bacterium colony, and nutrient solution remains
Transparent rufous, without lamination, the only a little precipitation in bottom；200 μ L upper strata bacterium solutions are drawn to 100mL enriched mediums
In, after cultivating 12 days, the precipitation capacity in blake bottle does not reach stable in change, using 12 days as one in follow-up incubation
In the cycle, periodically add nutrient solution, add 100mL every time；The bacterium solution 2mL of culture 12 days is taken to add the 1L enriched mediums newly configured
In, slag spare in S100 is added thereto after cultivating a cycle, and immersion training is carried out in 25 DEG C of constant-temperature shaking incubators
Support and be modified, each cycle adds 100mL enriched mediums thereto, and modification takes out material, cleans and dry, obtain after two months
Modified steel scoria.
Arsenic removal material prepared by the present embodiment, in laboratory conditions, with 0.1g materials to containing As (V)/As (III)
The simulated wastewater of 200 μ g/L is adsorbed.Obtain being As (III) to the saturated extent of adsorption of arsenic：1391.4 μ g/g and As (V)：
1650.4μg/g。
Embodiment 3
S100, take 200g slags to be washed by deionized water to pH near neutrals, and is dried in 105 DEG C of thermostatic drying chambers
Constant weight, slag is 100-200 mesh, spare；
S200, obtain one piece of iron block to get rusty first, is soaked 7 days or so in tap water, obtained water sample was carried out
Filter, the source water sample using this as microorganism；Selective agar medium is prepared, its component is as follows：0.5g/L NaNO3, 0.2g/L
CaCl2·2H2O, 0.5g/L KH2PO4·3H2O, 0.5g/L (NH4)2SO4, 0.5g/L MgSO4·7H2O, 10g/L
FeC6H5O7·NH4OH (ferric citrate), 20g/L agar powders, and corresponding enriched medium；Source water sample is coated on
On Selective agar medium, culture is inverted in 25 DEG C of constant incubators, until media surface grows white filmanetous colony；Picking list
Continue to cultivate on a Filamentous colony inoculation to new Selective agar medium of white, until media surface grows circular maroon bacterium
Fall；The single circular maroon bacterium colony of picking enters in enriched medium to be cultivated；It is existing to occur layering after culture 9 days, in blake bottle
As upper strata is faint yellow settled solution, and lower floor is red-brown precipitation, and is not connect in the blake bottle of bacterium colony, and nutrient solution remains
Transparent rufous, without lamination, the only a little precipitation in bottom；200 μ L upper strata bacterium solutions are drawn to 100mL enriched mediums
In, after cultivating 12 days, the precipitation capacity in blake bottle does not reach stable in change, using 12 days as one in follow-up incubation
In the cycle, periodically add nutrient solution, add 100mL every time；The bacterium solution 2mL of culture 12 days is taken to add the 1L enriched mediums newly configured
In, slag spare in S100 is added thereto after cultivating a cycle, and immersion training is carried out in 25 DEG C of constant-temperature shaking incubators
Support and be modified, each cycle adds 100mL enriched mediums thereto, takes out material after three months modified, cleans and dry, obtain
Modified steel scoria.
Arsenic removal material prepared by the present embodiment, in laboratory conditions, with 0.1g materials to containing As (V)/As (III)
The simulated wastewater of 200 μ g/L is adsorbed.Saturated extent of adsorption to arsenic is As (III)：1553 μ g/g and As (V)：1731.8μg/
g。
In the present invention, its component of the Selective agar medium is as follows：0.5g/L NaNO3, 0.2g/L CaCl2·2H2O,
0.5g/L KH2PO4·3H2O, 0.5g/L (NH4)2SO4, 0.5g/L MgSO4·7H2O, 10g/L FeC6H5O7·NH4OH, 20g/
L agar powders.Contain agar in Selective agar medium component, preparation be cooled to room temperature after be solid state, enriched medium be into
Remove agar in point, other compositions are identical, are liquid condition after preparation.
Performance test
The material in above-described embodiment and unmodified original material is taken to carry out removing arsenic in water performance test, in laboratory bar
Under part, the simulated wastewater containing As (V)/200 μ g/L of As (III) is adsorbed with 0.1g materials, in 25 DEG C of constant temperature oscillators
The concentration of remaining arsenic in water is measured after oscillating reactions 48h, and detects the change of water body pH.
It is computed as shown in table 1 to the adsorbance of arsenic：
Saturated extent of adsorption and water body pH of 1 material of table to arsenic
[safety experiment]
Take and the material after the modification 1 after absorption, 2, March and original material are soaked in 100mL ultra-pure waters respectively,
After vibrating 48h in 25 DEG C of constant temperature oscillators, the concentration of arsenic in water is measured.Table 2 shows the embodiment of the present invention 1, embodiment 2, reality
Apply the desorption situation after the material absorption of example 3 and original material.
2 safety detection experimental result of table (μ g/mL)
From table 1 it follows that the modified material of the present invention has good adsorption effect to the arsenic in water.By embodiment
1 finds with original material contrast, and 116.6 μ g/g and 207.8 μ g/g have been respectively increased to the adsorption capacity of arsenic (III/V), implements
378.2 μ g/g and 506.2 μ g/g have been respectively increased compared with original material, to the adsorption capacity of arsenic (III/V) in example 3.With changing
The increase of property time, material is more obvious to the adsorption effect of water body arsenic, and modification time is longer, corrosion function of the microorganism to slag
It is more notable so that slag surface void is more, and physical absorption effect gets a promotion, while microbial metabolism effect is also so that trivalent
Iron content enhances the effect of chemisorbed compared with raw material increase.Material is found out after desorption experiment is vibrated in immersion by table 2,
Not detecting in material has arsenic precipitation, ensure that the stability of material under field conditions (factors).
Although the embodiment of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, those of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (8)
1. the preparation method of a kind of modified steel scoria for removing arsenic in water, it is characterised in that specifically comprise the following steps：
S100, cleaned slag, and is dried to constant weight, spare；
The slag to dry to constant weight, be added in the nutrient solution containing iron-oxidizing bacteria by S200, erodes immersion, until being changed
Property slag.
2. preparation method according to claim 1, it is characterised in that in the S100, the slag need to first pass through from
Sub- water washing is to pH7.5-8.5, and drying to constant weight at 103 DEG C -105 DEG C.
3. it is used for the preparation method of the modified steel scoria of removing arsenic in water according to claim 2, it is characterised in that the S200
In, the time for eroding immersion is more than 30 days.
4. it is used for the preparation method of the modified steel scoria of removing arsenic in water according to claim 1, it is characterised in that the S200
In, after the slag to dry to constant weight is added in the nutrient solution containing iron-oxidizing bacteria, it need to be placed in constant-temperature shaking incubator
Erode immersion.
5. it is used for the preparation method of the modified steel scoria of removing arsenic in water according to claim 4, it is characterised in that the S200
In, the specific preparation process of the nutrient solution containing iron-oxidizing bacteria includes the following steps：
S210, choose one piece of iron block to get rusty, and is soaked 7 days or so in tap water, and obtained water sample is filtered, is obtained
Source water sample；
Source water sample, be coated on Selective agar medium and cultivated by S220, until Selective agar medium surface grows white filiform
Bacterium colony；
S230, will continue to cultivate on white Filamentous colony inoculation to new Selective agar medium, until Selective agar medium surface is grown
Circular maroon bacterium colony；
S240, access circular maroon bacterium colony in enriched medium and cultivated, until there is lamination in blake bottle, on
Layer is faint yellow settled solution, and lower floor is red-brown precipitation；
S250, the faint yellow settled solution of absorption are cultivated into enriched medium, obtain bacterium solution.
6. it is used for the preparation method of the modified steel scoria of removing arsenic in water according to claim 5, it is characterised in that the S220
In, after source water sample is coated on Selective agar medium, Selective agar medium need to be placed in 25 DEG C of constant incubators and be inverted training
Support, until Selective agar medium surface grows white filmanetous colony.
7. it is used for the preparation method of the modified steel scoria of removing arsenic in water according to claim 5, it is characterised in that the S250
In, the time that faint yellow settled solution is cultivated in enriched medium is more than or equal to a cycle, wherein, a cycle 12
My god.
8. it is used for the preparation method of the modified steel scoria of removing arsenic in water according to claim 7, it is characterised in that described faint yellow
The time that settled solution is cultivated in enriched medium is a cycle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711342265.XA CN108031429A (en) | 2017-12-14 | 2017-12-14 | A kind of preparation method of modified steel scoria for removing arsenic in water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711342265.XA CN108031429A (en) | 2017-12-14 | 2017-12-14 | A kind of preparation method of modified steel scoria for removing arsenic in water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108031429A true CN108031429A (en) | 2018-05-15 |
Family
ID=62102879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711342265.XA Pending CN108031429A (en) | 2017-12-14 | 2017-12-14 | A kind of preparation method of modified steel scoria for removing arsenic in water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108031429A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111167401A (en) * | 2020-01-17 | 2020-05-19 | 河南大学 | Preparation method of modified iron-based functional material |
| CN111167400A (en) * | 2020-01-17 | 2020-05-19 | 河南大学 | Application of modified iron-based functional material in heavy metal pollution remediation |
| CN113493316A (en) * | 2020-03-19 | 2021-10-12 | 博湃建筑科技（上海）有限公司 | Biochemical preparation method of steel slag powder, cement mixed material and concrete admixture |
-
2017
- 2017-12-14 CN CN201711342265.XA patent/CN108031429A/en active Pending
Non-Patent Citations (2)
| Title |
|---|
| 刘琼: "铁氧化菌的耐砷性能及除砷特征", 《中国博士学位论文全文数据库 工程科技Ⅰ辑》 * |
| 闫萌萌等: "微生物改性钢渣去除废水中砷（Ⅲ）的性能研究", 《武汉理工大学学报》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111167401A (en) * | 2020-01-17 | 2020-05-19 | 河南大学 | Preparation method of modified iron-based functional material |
| CN111167400A (en) * | 2020-01-17 | 2020-05-19 | 河南大学 | Application of modified iron-based functional material in heavy metal pollution remediation |
| CN113493316A (en) * | 2020-03-19 | 2021-10-12 | 博湃建筑科技（上海）有限公司 | Biochemical preparation method of steel slag powder, cement mixed material and concrete admixture |
| CN113493316B (en) * | 2020-03-19 | 2023-11-07 | 博湃建筑科技（上海）有限公司 | Biochemical preparation method of steel slag powder, mixed material of cement and concrete admixture |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Aksu | Biosorption of heavy metals by microalgae in batch and continuous systems | |
| White et al. | Biosorption of radionuclides by fungal biomass | |
| CN110015742A (en) | A kind of water hyacinth charcoal load nano zero-valence iron composite material and preparation and application | |
| CN103979749B (en) | A kind for the treatment of apparatus and processing method thereof of removing heavy metal in sewage | |
| CN102616912B (en) | Method for adsorbing lead in wastewater by using composite magnetic biological adsorbent | |
| CN106277283B (en) | Strengthen the method for removing arsenic antimony ion in water removal using iron and manganese oxides biological in filter tank | |
| CN105036487B (en) | Heavy metal wastewater thereby advanced treating and the apparatus and method of regeneration | |
| CN102614839B (en) | Compound magnetic biological adsorbent and preparation method for same | |
| CN106750356A (en) | A kind of method that metal-organic framework materials of utilization UiO 66 purify selenium-containing wastewater | |
| CN108262002B (en) | Preparation method and application of Fe-Ti binary oxide adsorbent for removing antimony | |
| CN104014314B (en) | Bio-adsorbent, preparation method and application | |
| Xu et al. | Adsorption of phosphorus from eutrophic seawater using microbial modified attapulgite-cleaner production, remove behavior, mechanism and cost-benefit analysis | |
| CN108031429A (en) | A kind of preparation method of modified steel scoria for removing arsenic in water | |
| CN100412192C (en) | Artificial biological film and preparation method | |
| CN106630131B (en) | A kind of preparation method of modified attapulgite soil particle and the method for accelerating anaerobic granulation using it | |
| CN106423272A (en) | Supported titanium dioxide/graphene oxide pellets and preparation method and application thereof | |
| CN106006998A (en) | Attapulgite/denitrifier composite type wastewater treating agent and preparation method thereof | |
| CN112237899A (en) | Lanthanum-magnesium modified sepiolite for removing phosphorus from black and odorous water body | |
| CN113788549A (en) | Urban sewage treatment agent, preparation method and application thereof | |
| CN105944684A (en) | Preparation method and application of oxidized graphene and magnetic chitosan compound | |
| Feng et al. | Production of sorption functional media (SFM) from clinoptilolite tailings and its performance investigation in a biological aerated filter (BAF) reactor | |
| CN105617980B (en) | A kind of bentonitic method and its application of biosurfactant modified magnetic | |
| JP5730626B2 (en) | Selenium-containing water reduction treatment apparatus and selenium-containing water reduction treatment method | |
| CN100400668C (en) | Biosynthesis of obligate adsorbent and its usage in adsorbing to eliminate As and Cr from water | |
| CN107790099B (en) | Adsorbing material for phosphorus and heavy metal polluted water and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180515 |