CN109126702A - A method of improving adsorbent adsorption capacity prepared by stamp pulp thickening object - Google Patents
A method of improving adsorbent adsorption capacity prepared by stamp pulp thickening object Download PDFInfo
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- CN109126702A CN109126702A CN201811097294.9A CN201811097294A CN109126702A CN 109126702 A CN109126702 A CN 109126702A CN 201811097294 A CN201811097294 A CN 201811097294A CN 109126702 A CN109126702 A CN 109126702A
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- 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
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
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- 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
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- 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
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- 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
- C02F1/02—Treatment of water, waste water, or sewage by heating
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- 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
- C02F1/24—Treatment of water, waste water, or sewage by flotation
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- 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
- C02F2101/30—Organic compounds
- C02F2101/308—Dyes; Colorants; Fluorescent agents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Inorganic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The present invention discloses a kind of method for improving adsorbent adsorption capacity prepared by stamp pulp thickening object, comprising the following steps: (1) chemical substance for capableing of release hydrogen ions in right amount is added into stamp waste liquid, reacts certain time；(2) chemical agent for reacting with waste liquid generate micro-bubble in right amount is added；(3) above 5-30 DEG C of softening point for heating waste liquid to binder, until forming bulky grain solid extract；(4) held for some time, until forming the blocky extract that internal voids are flourishing and are evenly distributed；(5) it is shunk sufficiently to blocky extract volume, is separated by solid-liquid separation, goes to remove water；(6) saturation potassium hydroxide solution is added；(7) object to be extracted takes out after fully absorbing potassium hydroxide, by its low temperature drying after cooling down, being broken；(8) under nitrogen protection in 700 DEG C of one step carbonization-activation 1-4 h, adsorbent is made after being crushed.The method of the present invention improves the adsorption capacity of adsorbent prepared by extract, to dye of positive ion adsorption capacity up to 430 mg/g or more.
Description
Technical field
The invention belongs to environmental protection technical field, in particular to adsorbent prepared by a kind of raising stamp pulp thickening object
The method of adsorption capacity.
Background technique
Ink is made of pigment, binder, filler, additional material etc., can be divided into oil-based ink and water-based ink.Oiliness oil
Contain a large amount of organic solvent in ink, it is seriously polluted, gradually it is eliminated.Water-based ink is mainly by binder, that is, water soluble polymer
Organic matter, pigment, alcohol, amine or ammonia and other additives and water composition.Water-based ink characteristic healthy because of it, environmentally friendly, safety,
It is widely used in every field.Currently, a large amount of plastic package material uses aqueous oil in stamp, printing more and more
Ink needs to clean printing equipment and water-based ink storage tank when replacing color, produces a certain amount of high concentration aqueous's ink print
Flower waste liquid.Contain the pollutants such as pigment, water soluble acrylic resin, alcohol, amine (ammonia), content of organics in this kind of stamp waste liquid
More, coloration is high, pollution it is extremely serious (coloration: 30,000 times or more, CODCr: 100,000-50 ten thousand mg/L), it is difficult to it handles.
Processing for this kind of waste liquid generallys use the chemical methodes such as Coagulation Method and is pre-processed, i.e., adds into waste liquid
Coagulant makes pollutant agglomerate to form sludge, then rolls filter, belt type dewaterer or centrifugal dehydrator etc. using sheet frame and carry out machinery
The solid-liquid separating methods such as dehydration are separated by solid-liquid separation, and water outlet carries out other chemistry or biological treatment to qualified discharge again.Due to useless
Pollutant concentration is high in liquid, and the sludge solid content of formation is up to 5-10%, it is difficult to dehydration, and by mechanism filter-pressing or from
The mud cake formed after heart dehydration carries out landfill disposal usually as solid waste, be easy to cause secondary pollution.
In recent years, domestic and foreign scholars to using various wastes prepare adsorbent and for dye waste water adsorbing and discoloring carry out
A large amount of research.Such as Su Shiung Lam utilizes orange peel in microwave-assisted lower obtained adsorbent, to the balance of peacock green
Adsorption capacity is up to 28.5 mgg-1；Adsorbent is made using plant residue in Alejandra Alicia etc., to acid dyes
Equilibrium adsorption capacities with basic dye are respectively up to 312.5 mgg-1With 500.0 mgg-1；Ta í sL Silva etc. utilizes work
Industry washs sludge and adsorbent is made, to reactive dye brilliant blue R equilibrium adsorption capacities up to 36.5 mgg-1；Syieluing
Adsorbent is made using weaving sludge in Wong etc., and the equilibrium adsorption capacities to active black and methylene blue are respectively 5 mgg-1
With 3.66 mgg-1；Adsorbent is made using leather-making mud in Geethakarthi A etc., measures it and inhales to the balance of REACTIVE RED 31
Attached capacity reaches 39.37 mgg-1；Adsorbent is made using paper mill sludge in Li Wenhong etc., to the balance of Reactive Red 24
Adsorption capacity is up to 15.68 mgg-1.Adsorbent is prepared with trade waste, not only preventing secondary pollution again can be realized admittedly
Useless resource utilization has good environmental benefit and social benefit.But with the suction of adsorbent prepared by trade waste
Attached performance is affected by raw material, and the adsorption effect of sludge base adsorbent is generally far below plant base adsorbent, the suction to dyestuff
It is attached to be clearly present the low problem of equilibrium adsorption ability.
Containing a large amount of organic matter available resources such as water-based acrylic resin in water-based ink sludge, as being prepared
At adsorbent and be applied to it is dye decolored, the secondary use of sludge may be implemented." a kind of high concentration is black printed useless for patent of invention
The method that liquid pollutant is extracted and utilized " (application number CN201610904367.5) summary of the invention is " by high concentration black water
The acidification of ink jet printing waste liquid, stirring make pollutant agglomerate to form paste sludge；The 100-500 mesh of 5-10 g/L is added into sludge
Sludge is heated to 50-90 DEG C of dehydration while stirring after mixing evenly by calcium miberal powder, is made sludge curing at bulk, is taken off Chinese effluent；
Take out sludge hot squeeze to moisture percentage in sewage sludge it is dry lower than after 40%；Sludge isolation air after drying is heated to 400-700 DEG C
Keep the temperature 1-4h；Sludge is cooled to 50 DEG C or less and is broken into graininess, the misty wetting agent that sprinkling mass concentration is 0.1-0.2%
It is uniformly mixed after solution；Mud granule is added in cationic dyeing waste water by 2-10 g/L waste water dosage, aeration stirs
10-120min, precipitating or filtering removal mud granule are mixed, decolourize discharge of wastewater；Mud granule recycles 400-700 DEG C of hot recycling,
It is recycled." it is used for cationic dyeing waste water decoloring adsorbent dosage as 5-10 g/L waste water.Such as embodiment 1
" 92% concentrated sulfuric acid is slowly added into the high concentration black water ink jet printing waste liquid that COD is 39.2 ten thousand mg/L, stirring makes dirt
Dye object agglomerates to form sludge；The 200-500 mesh calcium miberal powder that 8g/L is added into sludge, after mixing evenly while stirring adds sludge
Heat makes sludge curing at bulk, takes off Chinese effluent to 75 DEG C of dehydrations；Take out sludge hot squeeze to moisture content it is dry lower than after 40%；
Sludge isolation air after drying is heated to 500 DEG C of 2 h of heat preservation；Sludge is cooled to 50 DEG C or less and is broken into graininess, is sprayed
It is uniformly mixed after spilling the misty wetting agent solution that mass concentration is 0.1%；Mud granule is added to Huang by 5 g/L waste water dosages
In color cationic dyeing waste water, 100 min of aeration stirring, precipitating removal mud granule, decolourize discharge of wastewater, yellow sun from
Sub- dyeing decolorization rate of wastewater reaches 99.5% or more." its adsorbent dosage be 5 g/L waste water, hence it is evident that there are adsorbent suctions
Attached ability is low, the big defect of adsorbent amount.
If the adsorption capacity of prepared adsorbent can be improved, adsorbent amount can be greatly reduced, save the cost, at raising
Effect is managed, overcomes adsorbent adsorption capacity during cationic dyeing waste water adsorbing and discoloring low, adsorbent amount is big to be lacked
It falls into.
Summary of the invention
The invention proposes it is a kind of raising stamp pulp thickening object prepared by adsorbent adsorption capacity method, for sun from
Sub- dye waste water adsorbing and discoloring can increase substantially the adsorption capacity of adsorbent prepared by stamp pulp thickening object, reduce and inhale
Attached dose of dosage improves the utilization rate of adsorbent, saves processing cost.
For achieving the above object, the technical method that the present invention uses are as follows:
A method of improving adsorbent adsorption capacity prepared by stamp pulp thickening object, which comprises the following steps:
(1) chemical substance for capableing of release hydrogen ions in right amount is added into high concentration aqueous's ink jet printing waste liquid, constantly reacts, suppression
The ionization of water soluble polymer binder ionogen processed reduces the solubility of water soluble polymer binder, destroys connection
The stability of material, until making extractable matter in waste liquid just be condensed into insoluble tiny solid particle, and increase of not flocculating；
(2) chemical agent for reacting with waste liquid generate micro-bubble in right amount is slowly added into waste liquid, sticks bubble in waste liquid
Tiny solid particle, between tiny solid particle formed airwater mist cooling contact interface, prevent tiny solid particles flocculate
Increase；
(3) heating waste liquid to temperature is higher than above 5-30 DEG C of softening point of binder, coheres tiny solid particle mutually,
Form the bulky grain solid extract of internal package micro-bubble and water；
(4) held for some time, using binder strand roll up and power proposes bulky grain solid the effects of intermolecular hydrogen bonding
Object is taken sufficiently to cohere, deform, volume is constantly shunk, and forms blocky extract, while making block using heat effect in insulating process
Hole is uniform between shape extract internal particle, to keep extract structure uniform；
(5) it is shunk sufficiently to blocky extract volume, is separated by solid-liquid separation, goes to remove water；
(6) a certain amount of saturation potassium hydroxide solution is added, blocky extract surface fast cooling is cooling, keep extract surface fast
Speed hardening, reduces extract surface viscosity, extract is made to fully absorb potassium hydroxide；
(7) it takes out blocky extract and is fully cooled, it is after being crushed that extract is low lower than below the softening point of binder in temperature
Temperature is dry；
(8) it in 700 DEG C of one step charing, activation 1-4 h under the extract nitrogen protection after will be dry in step (7), is made after broken
Obtain adsorbent.
The utility model has the advantages that
A. high concentration aqueous's ink jet printing waste liquid through this method extract pollutant process after, waste liquid percent of decolourization be up to 99.8% with
On, organic pollutant recovery rate is greatly lowered waste liquor contamination load up to 95% or more, is convenient for subsequent processing；
B. the ionization for inhibiting water soluble polymer binder ionogen with hydrogen ion, subtracts macromolecular repulsive interaction
Weak, macromolecular chain is curled, and size reduces, and generation-COOH group is reacted with binder, can form internal hydrogen bond, is conducive to extract
Composition granule sufficiently coheres, volume contraction, and deviates from internal moisture；
C. the tiny solid particle in waste liquid is sticked with micro-bubble, forms gas, liquid, solid three between tiny solid particle and connects
Interface is touched, Gu solid-contact interface can be reduced, prevents the flocculation increase of solia particle and subsequent cure closely knit, is conducive in formation
The small mesoporous quantity in portion improves adsorption capacity；
D. when temperature is 5-30 DEG C above higher than softening point, macromolecular chain can sufficiently be shunk, and form the new surface of solids and freedom
Volume improves adsorption capacity, and keep sludge curing abundant to further increase interior porosity；
E. heat effect can make micro-bubble inside blocky extract acutely vanish, and generate shock wave, cause local agitation, make molecule
Chain movement is violent, is not only conducive to be formed mesoporous but also keep hole between blocky extract internal particle uniform, improves adsorption capacity；
F. prepared adsorbent is inhaled to when the dye of positive ion solution dosage of 300 mg/L of concentration is 0.6 g/L solution or so
Attached capacity is up to 430 mg/g or more, and solution percent of decolourization is substantially reduced up to 96 % or more, adsorbent dosage, improves absorption
The utilization rate of agent.
Specific embodiment
The present invention is further illustrated below by specific embodiment.
Embodiment 1
(1) it is slowly added to 98% concentrated sulfuric acid into high concentration aqueous's ink jet printing waste liquid, constantly reacts, reduces water-soluble high score
The solubility of sub- binder destroys its stability in water, until it is insoluble thin to be condensed into extractable matter just
Small solia particle；
(2) 8 g/L sodium bicarbonates are slowly added into waste liquid, are allowed to react generation microbubble with waste liquid, bubble is made to stick waste liquid
In tiny solid particle, between tiny solid particle formed airwater mist cooling contact interface, prevent tiny solid particle wad a quilt with cotton
It is solidifying to increase；
(3) heating waste liquid to temperature is higher than 10 DEG C of the softening point of binder or more, coheres tiny solid particle mutually, shape
At the bulky grain solid extract of internal package micro-bubble and water；
(4) 10 min are kept the temperature, using binder macromolecular chain roll up and power proposes bulky grain solid the effects of intermolecular hydrogen bonding
Object is taken sufficiently to cohere, deform, volume is constantly shunk, and forms blocky extract, while making block by heat effect in insulating process
Hole is uniform between shape extract internal particle, to keep extract structure uniform；
(5) it is shunk sufficiently to blocky extract volume, is separated by solid-liquid separation, goes to remove water；
(6) saturation potassium hydroxide solution (potassium hydroxide and extract quality ratio 1:2) is added, by the blocky fast prompt drop in extract surface
Temperature is cooling, makes the quick-hardening of extract surface, reduces extract surface viscosity, extract is made to fully absorb potassium hydroxide；
(7) it takes out blocky extract and is fully cooled, it is after being crushed that extract is low lower than below the softening point of binder in temperature
Temperature is dry；
(8) it in 700 DEG C of one 1.5 h of step carbonization-activation under the extract nitrogen protection after will be dry in step (7), is made after being crushed
Adsorbent.
Embodiment 2
(1) it is slowly added to 20% sodium bisulfate into high concentration aqueous's ink jet printing waste liquid, constantly reacts, reduces water-soluble
The solubility of property macromolecule binder, destroys its stability in water, until being condensed into extractable matter in waste liquid just not
Dissolubility tiny solid particle；
(2) 5 g/L sodium carbonate are slowly added into waste liquid, are allowed to react generation micro-bubble with waste liquid, bubble is made to stick waste liquid
In tiny solid particle, between tiny solid particle formed airwater mist cooling contact interface, prevent tiny solid particle wad a quilt with cotton
It is solidifying to increase；
(3) heating waste liquid to temperature is higher than 30 DEG C of the softening point of binder or more, coheres tiny solid particle mutually, shape
At the bulky grain solid extract of internal package micro-bubble and water；
(4) 10 min are kept the temperature, using binder macromolecular chain roll up and power proposes bulky grain solid the effects of intermolecular hydrogen bonding
Object is taken sufficiently to cohere, deform, volume is constantly shunk, and forms blocky extract, while making block by heat effect in insulating process
Hole is uniform between shape extract internal particle, to keep extract structure uniform；
(5) it is shunk sufficiently to blocky extract volume, is separated by solid-liquid separation, goes to remove water；
(6) saturation potassium hydroxide solution (potassium hydroxide and extract quality ratio 1:2) is added, by the blocky fast prompt drop in extract surface
Temperature is cooling, makes the quick-hardening of extract surface, reduces extract surface viscosity, extract is made to fully absorb potassium hydroxide；
(7) it takes out blocky extract and is fully cooled, it is after being crushed that extract is low lower than below the softening point of binder in temperature
Temperature is dry；
(8) it in 700 DEG C of one 3 h of step carbonization-activation under the extract nitrogen protection after will be dry in step (7), is made and inhales after being crushed
Attached dose.
Embodiment 3
(1) it is slowly added to 98% glacial acetic acid into high concentration aqueous's ink jet printing waste liquid, constantly reacts, reduces water-soluble high score
The solubility of sub- binder destroys its stability in water, until it is insoluble thin to be condensed into extractable matter just
Small solia particle；
(2) 5 g/L potassium carbonate are slowly added into waste liquid, are reacted with waste liquid and are generated micro-bubble, stick bubble in waste liquid
Tiny solid particle forms airwater mist cooling contact interface between tiny solid particle, prevents tiny solid particles flocculate from increasing
Greatly；
(3) heating waste liquid to temperature is higher than 20 DEG C of the softening point of binder or more, coheres tiny solid particle mutually, shape
At the bulky grain solid extract of internal package micro-bubble and water；
(4) 20 min are kept the temperature, using binder strand roll up and power extracts bulky grain solid the effects of intermolecular hydrogen bonding
Object is sufficiently cohered, is deformed, and volume is constantly shunk, and forms blocky extract, while making bulk by heat effect in insulating process
Hole is uniform between extract internal particle, to keep extract structure uniform；
(5) it is shunk sufficiently to blocky extract volume, is separated by solid-liquid separation, goes to remove water；
(6) saturation potassium hydroxide solution (potassium hydroxide and extract quality ratio 1:2) is added, by the blocky fast prompt drop in extract surface
Temperature is cooling, makes the quick-hardening of extract surface, reduces extract surface viscosity, extract is made to fully absorb potassium hydroxide；
(7) it takes out blocky extract and is fully cooled, it is after being crushed that extract is low lower than below the softening point of binder in temperature
Temperature is dry；
(8) it in 700 DEG C of one 2 h of step carbonization-activation under the extract nitrogen protection after will be dry in step (7), is made and inhales after being crushed
Attached dose.
Comparative example 1:
By water-based ink stamp waste liquid add sludge press filtration dehydration that PAC coagulation obtains, it is dry, broken after potassium hydroxide is added
(mass ratio 1: 1) is uniformly mixed, and under nitrogen protection in 700 DEG C of one 3 h of step carbonization-activation, adsorbent is made after being crushed.
Comparative example 2:
By water-based ink stamp waste liquid add sludge press filtration dehydration that PAC coagulation obtains, it is dry, broken after potassium hydroxide is added
(mass ratio 1: 1) is uniformly mixed, and under nitrogen protection in 700 DEG C of one 2 h of step carbonization-activation, adsorbent is made after being crushed.
Adsorbent made from embodiment 1, embodiment 2, embodiment 3 and comparative example 1 and comparative example 2 is used for cation respectively
24 h of adsorption bleaching of dye solution, until adsorption equilibrium, filtering removal adsorbent, survey its residual concentration by spectrophotometer,
Solution decolorizing effect is tested, shown in result subordinate list 1.
The different bleaching agent bleaching Contrast on effect situation tables of table 1
The decolorizing effect as shown in table 1 reaches identical decolorizing effect as it can be seen that dye solution for same concentrations, the present invention
Prepared adsorbent dosage is far below comparative example, the about 10-20% of comparative example dosage, and adsorption capacity is up to 430 mg/g
More than.The method of the present invention substantially increases the adsorption capacity of adsorbent prepared by stamp pulp thickening object.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any those skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its invent
Design is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (4)
1. a kind of method for improving adsorbent adsorption capacity prepared by stamp pulp thickening object, which is characterized in that including following step
It is rapid:
(1) it is passed through sour gas in hydrotropism's ink waste liquid, constantly reacted, water soluble polymer binder can in inhibition waste liquid
The degree of ionization of ionizing group reduces the solubility of water soluble polymer organic matter, destroys the stability of binder, make in waste liquid
Extractable matter is condensed into insoluble tiny solid particle；
(2) chemical agent for reacting with waste liquid generate micro-bubble in right amount is slowly added into waste liquid, sticks bubble in waste liquid
Tiny solid particle, between tiny solid particle formed airwater mist cooling contact interface, prevent tiny solid particles flocculate
Increase；
(3) heating waste liquid to temperature is higher than above 5-30 DEG C of softening point of water soluble polymer organic matter, gradually makes tiny solid
Particle mutually coheres, and forms the bulky grain solid extract of internal package micro-bubble and water；
(4) held for some time, using macromolecule organic strand roll up and intermolecular force proposes bulky grain solid
Take object sufficiently to cohere, volume is constantly shunk, until formed internal void prosperity blocky extract, while in insulating process by
Heat effect keeps hole between blocky extract internal particle uniform, to keep extract structure uniform；
(5) it is shunk sufficiently to blocky extract volume, is separated by solid-liquid separation, goes to remove water；
(6) saturation potassium hydroxide solution is added, blocky extract surface fast cooling is cooling, keep extract surface quickly hard
Change, reduces extract surface viscosity, extract is made to fully absorb potassium hydroxide；
(7) blocky extract is taken out to be fully cooled, it is after being crushed that extract is soft lower than water soluble polymer organic matter in temperature
Change point temperature or less low temperature drying；
(8) adsorbent is made after being crushed under nitrogen protection in 700 DEG C of one step charing, activation 1-4 h in the extract after drying.
2. a kind of method for improving adsorbent adsorption capacity prepared by stamp pulp thickening object according to claim 1,
It is characterized in that, the acid in the step (1) is inorganic acid or organic acid.
3. a kind of method for improving adsorbent adsorption capacity prepared by stamp pulp thickening object according to claim 2,
It is characterized in that, the degree of ionization of inorganic acid or organic acid in water should be greater than the degree of ionization of carboxylic acid group.
4. a kind of method for improving adsorbent adsorption capacity prepared by stamp pulp thickening object according to claim 1,
It is characterized in that, the chemical agent in the step (2) is or mixtures thereof water soluble carbonate hydrogen salt or one kind of carbonate.
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| SK172010A3 (en) * | 2010-03-04 | 2011-09-05 | Gtvt, S. R. O. | Method for valuation of waste water containing nitro-derivatives and nitroso-derivatives of aryl amines |
| CN102626607A (en) * | 2012-05-04 | 2012-08-08 | 江苏省交通规划设计院股份有限公司 | Preparation method and application of residual activated sludge adsorbent |
| CN106365349A (en) * | 2016-10-18 | 2017-02-01 | 青岛大学 | High-concentration black printing waste liquid contaminant extraction and utilization method |
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| Title |
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| MALI HUNSOM ET AL.: "Adsorptive purification of crude glycerol by sewage sludge-derived activated carbon prepared by chemical activation with H3PO4, K2CO3 and KOH", 《CHEMICAL ENGINEERING JOURNAL》 * |
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