CN103523847A - Method for removing sulfapyridine in water bodies with straw charcoal through adsorption and application of straw charcoal in removing sulfapyridine in water bodies - Google Patents
Method for removing sulfapyridine in water bodies with straw charcoal through adsorption and application of straw charcoal in removing sulfapyridine in water bodies Download PDFInfo
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- 229960002211 sulfapyridine Drugs 0.000 title claims abstract description 97
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- 229910052739 hydrogen Inorganic materials 0.000 claims description 2
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- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The invention discloses a method for removing sulfapyridine in water bodies with crop straw charcoal through adsorption. The method is characterized by comprising a step of putting crop straw charcoal into water bodies containing sulfapyridine as an adsorbent to adsorb and remove sulfapyridine in the water bodies, wherein the adsorption temperature is 20-30 DEG C; the adsorption time is 72-75 hours; the pH value of solution after adsorption equilibrium is 5.8-6.0; the initial concentration of sulfapyridine in the water bodies is 2-50mg/L; the mass ratio of the crop straw charcoal to the water bodies containing sulfapyridine is 1:(2000-4000). Under the condition of room temperature, after adsorption for 3 days, the crop straw charcoal shows a high antibiotics adsorption removal rate. Besides, the method has the beneficial effects that the materials are simple to prepare; the method is convenient to operate; the cost is low; the raw materials are accessible; medicine pollution is effectively eliminated; the current technical gaps are filled in.
Description
Technical field
The invention belongs to inorganic materials and synthesize and water technology scope, relate generally to the method for sulfapyridine in a kind of straw charcoal Adsorption water body.
Background technology
Sulfapyridine (Sulfapyridine), another name is for 2-sulfanilylpyridine, 4-amino-N-(2-pyridyl) benzsulfamide, to amine-N-2-pyridine benzene sulphur vinegar amine, 4-Amino-N-(2-pyridinyl) benzene sulfonamide, 4-(2-Pyridinylsulfonyl) aniline, 1. proterties: yellowish-brown to white powder; Fusing point (℃): 191-193 ℃; 3. solvability: be slightly soluble in water.It is a kind of Broad spectrum antibiotics.Most of Gram-positives and Gram-negative bacteria are had to restraining effect, be widely used in medical treatment, livestock industry.Because most sulfapyridines can not be absorbed by organism completely, sulfapyridine enters soil, water body environment with parent compound or metabolite form, thus pollution of ecological environment.At present existing a lot of country in sludge sewage, surface water, even detect the sulfapyridine of multiple types, different concns in tap water.Due to sulfapyridine in environment inducible resistance bacterium, affect microorganism in environment, human health is had to potential hazard simultaneously, therefore the processing containing sulfapyridine waste water has become one of study hotspot.
It is a complicated process that the sulfanilamide (SN) microbiotic of sewage work is eliminated, conventional processing sulfanilamide (SN) microbiotic mode comprises ion exchange method, dehumidification type catalytic oxidation, activated sludge process, treatment effect is on the low side, it is reported the activated sludge process that sewage work is the most frequently used, to the clearance of sulfapyridine, between 20%-77%, and may introduce disinfection byproduct (DBP); Chemical oxidization method and membrane filter method even depth treatment technology cost are high, and sulfanilamide (SN) microbiotic can suppress the activity of microorganism, thereby cause treatment effect unstable; Therefore it is very important, developing efficient sulfanilamide (SN) microbiotic removal method.
A research shows, within 2005, national stalk ultimate production reaches 84183.12 ten thousand tons, with straw, corn stalk and wheat straw, is mainly main stalk type; The elementary processed side products of agricultural-food such as rice husk, corn cob, bagasse, beet pulp are also very important stalk sources.Although the recycling of stalk has been carried out to some researchs and discussion, owing to being subject to the impact of traditional agriculture and considering transportation cost and tooling cost, the conventional process mode of China's stalk is on-site incineration (on a small quantity for being processed into feed additive).Especially in the fall, under underlying air is dominated, be easy to cause visibility meter near the ground to reduce, the remarkable increase of PM2.5 in air (particle diameter is lower than the particulate matter of 2.5 μ m).This not only can cause a hidden trouble to the safety of land route, navigation and air traffic, and HUMAN HEALTH is threatened.In July, 2008, State Council issued " about accelerating to advance the suggestion of agricultural crop straw comprehensive utilization ".This advances stalk comprehensive utilization for accelerating, and realizes resource utilization, the commercialization of stalk, promotes resources conservation, environment protection and increasing peasant income to have vital role.Therefore, for a large amount of antibiotic products that exist in current hospital, feedlot and pharmaceutical plant waste water, develop that a kind of low cost, operability are high, easily preparation and raw material easily obtain stalk and process the technology of sulfapyridine in waste water and both met national policy demand, meet again social development needs.
Absorption method is that a kind of sorbent material that utilizes is removed the method for hazardous and noxious substances in water by adsorption, has that efficiency is high, low power consumption and other advantages, is widely used in waste water treatment process.Wherein sorbent material is often referred to the material of high-specific surface area, large pore volume.As gac, molecular adsorption resin etc.
Straw charcoal is that a kind of cost is low, less energy-consumption, environmental friendliness, the simple sorbent material of technique.Be characterized in thering is porous, the similar gac such as high-specific surface area, simultaneously according to relevant report, charcoal, after acidifying, can significantly improve aperture and specific surface area, is especially suitable as sorbing material.Our great many of experiments shows, synthetic agricultural crop straw charcoal can effectively be removed the sulfapyridine in water body in this way, and agricultural crop straw has advantage cheaply cheap and easy to get simultaneously, so this technology has important practical application and promotional value.
Summary of the invention
The object of the invention is for agricultural waste material resource reutilization, provide charcoal that a kind of agricultural crop straw makes by the application of adsorption sulfapyridine in Adsorption water body.
Another object of the present invention is to provide the method that wood charcoal adsorption that a kind of agricultural crop straw makes is removed sulfapyridine in water body.
Object of the present invention can be achieved through the following technical solutions:
A kind of agricultural crop straw wood charcoal adsorption is removed the method for sulfapyridine in water body, using agricultural crop straw charcoal as sorbent material, drop into containing in the water body of sulfapyridine and carry out sulfapyridine in Adsorption water body, wherein adsorption temp is 20~30 ℃, adsorption time is 72-75 hour, and after adsorption equilibrium, the pH of solution is 5.8~6.0; Wherein in water body, the starting point concentration of sulfapyridine is 2~50mg/L, and agricultural crop straw charcoal is 1:2000~4000 with the mass ratio that contains the water body of sulfapyridine.
Preferably, described a kind of agricultural crop straw wood charcoal adsorption removes that the preparation method of the agricultural crop straw charcoal in the method for sulfapyridine in water body is wherein a kind of is: 1) by agricultural crop straw through drying, pulverizer pulverizes; 2) carry out priming reaction, described priming reaction carries out in being placed in the tool lid crucible of retort furnace, in priming reaction, first slowly heat up 500 ℃, temperature rise rate is 5~10 ℃/min, after being warming up to 500 ℃, continue again reaction 1~3h, by acid solution, process and complete priming reaction afterwards, it is to process with hydrochloric acid and hydrofluoric acid mix acid liquor that described acid solution is processed, and the mass ratio of the two is 1~3:1; 3) after priming reaction, adopt deionized water wash material to neutral; Being dried at 110~112 ℃ after washing dried; After dry, be cooled to room temperature, be placed in after the interior grinding of mortar, cross 100 mesh sieves and obtain straw charcoal;
An application for agricultural crop straw charcoal sulfapyridine in Adsorption water body, drops into containing in the water body of sulfapyridine and carries out sulfapyridine in Adsorption water body agricultural crop straw charcoal as sorbent material.
Preferably, described a kind of agricultural crop straw wood charcoal adsorption is removed the method for sulfapyridine in water body, and after adsorption equilibrium, the pH of solution is 5.8~6.0.
Preferably, described a kind of agricultural crop straw wood charcoal adsorption is removed the method for sulfapyridine in water body: agricultural crop straw charcoal is 1:3000 with the mass ratio that contains the water body of sulfapyridine.
Preferably, in the technical program, for the agricultural crop straw charcoal in the method for Adsorption water body sulfapyridine, also have preparation method as follows: straw charcoal is prepared by following steps:
By agricultural crop straw through drying, pulverizer is ground into after indefinite form particle, 40 mesh sieves sieve sieve after stalk, particle diameter requires 30-40 order; After will sieve after stalk be transferred in tool lid crucible, in the retort furnace of 480~520 ℃, carry out carbonization, carbonization time is 1~3h, the temperature rise rate of retort furnace is at 5~10 ℃/min, cooled carbonized product washs 3-5 time with hydrochloric acid and hydrofluoric acid mix acid liquor successively, and the mass ratio of hydrochloric acid and hydrofluoric acid is 1~3:1, deionized water wash 3-5 time, after being dried, is cooled to room temperature, be placed in after the interior grinding of mortar, cross 100 mesh sieves and obtain straw charcoal.
Preferably, a kind of agricultural crop straw wood charcoal adsorption is removed the preparation method of the agricultural crop straw charcoal in the method for sulfamethoxazole in water body, it is characterized in that straw charcoal prepared by following steps:
By agricultural crop straw through drying, pulverizer is ground into after indefinite form particle, 200 mesh sieves sieve sieve after stalk, particle diameter requires 150-180 order; According to stalk after described sieving: tackiness agent is 1:(20~50) ratio will sieve after stalk mix with tackiness agent, described tackiness agent is bamboo tar, wood tar oil, coal tar or coal-tar pitch; Magnetic agitation 30min-50min must mix wet feed after the time, described mixing wet feed is transferred to extrusion molding in intermittent type stamping machine, the billot of extruding is cut into the particle of 4-12mm, the particle of above-mentioned 4-12mm is positioned over to coated carbon dust in particle coating machine, after by the transfer of granules after coated, to temperature, be to be dried in the baking oven of 180~200 ℃, time time of drying is 2~3h; After dried product exhibited is transferred in the retort furnace of 580~620 ℃ and carries out carbonization, carbonization time is 2~10h, the temperature rise rate of retort furnace, at 5~20 ℃/min, adopts hydrogen reducing or protection of inert gas carbonization during carbonization, realize activation simultaneously; Cooled carbonized product, after centrifugation, is used washing with alcohol 3-5 time, deionized water wash 3-5 time successively, is cooled to room temperature and obtains straw charcoal after being dried.
Preferably, in the technical program, for the agricultural crop straw charcoal in the method for Adsorption water body sulfapyridine, also have a kind of preferably preparation method as follows: straw charcoal is prepared by following steps, a preparation method for agricultural crop straw charcoal in wood charcoal adsorption removal water body in the method for sulfapyridine, straw charcoal is prepared by following steps:
By agricultural crop straw through drying, pulverizer is ground into after indefinite form particle, 40 mesh sieves sieve sieve after stalk, particle diameter requires 30-40 order; According to stalk after described sieving: tackiness agent is 1:(20~50) ratio will sieve after stalk mix with tackiness agent, described tackiness agent is bamboo tar, wood tar oil, coal tar or coal-tar pitch; Magnetic agitation 30min-50min must mix wet feed after the time, described mixing wet feed is transferred to extrusion molding in intermittent type stamping machine, the billot of extruding is cut into the particle of 4-12mm, the particle of above-mentioned 4-12mm is positioned over to coated carbon dust in particle coating machine, after by the transfer of granules after coated, to temperature, be to be dried in the baking oven of 180~200 ℃, time time of drying is 2~3h; After dried product exhibited is transferred in tool lid crucible, in the high temperature process furnances of 480~520 ℃, carry out carbonization, carbonization time is 1~3h, the temperature rise rate of high temperature process furnances is at 5~10 ℃/min, cooled carbonized product washs 3-5 time with hydrochloric acid and hydrofluoric acid mix acid liquor successively, and the mass ratio of hydrochloric acid and hydrofluoric acid is (1~3): 1, deionized water wash is 3-5 time, after being dried, is cooled to room temperature, be placed in after the interior grinding of mortar, cross 100 mesh sieves and obtain straw charcoal.
Also have a kind of method of the Adsorption sulfapyridine that agricultural crop straw charcoal mixes with nano carbon microsphere of utilizing as follows: a kind of agricultural crop straw wood charcoal adsorption is removed the method for sulfapyridine in water body, it is characterized in that, after agricultural crop straw charcoal mixes with CNT (carbon nano-tube), as compound adsorbent, drop into containing in the water body of sulfapyridine and carry out sulfapyridine in Adsorption water body, wherein agricultural crop straw charcoal and CNT (carbon nano-tube) blending ratio are (1~2): 1, adsorption temp is 20~30 ℃, adsorption time is 72-75 hour, and after adsorption equilibrium, the pH of solution is 5.7~6.0; Wherein in water body, the starting point concentration of sulfapyridine is 2~50mg/L, and agricultural crop straw charcoal is 1:1000~3000 with the mass ratio that contains the water body of sulfapyridine; Described CNT (carbon nano-tube) is multiple-wall carbon nanotube, and external diameter scope is 10-30nm.Preferably, described CNT (carbon nano-tube) is attached with hydroxyl oxidize iron catalyst, and described hydroxyl oxidize iron catalyst is carrier model hydrous iron oxide.Its effect is as catalyzer, to strengthen current potential to move, and improves adsorptive power and efficiency.
Further, described nano carbon microsphere is attached with hydroxyl oxidize iron catalyst, and described hydroxyl oxidize iron catalyst is carrier model hydrous iron oxide.Its preparation process is as follows, the dilute hydrochloric acid of carrier being put into pH=1~2 soaks 10 hours, rinse the carrier after soaking, and then put into iron nitrate solution and soak 18 hours, add wherein sodium hydroxide solution, iron ion is precipitated completely, generate brown precipitate thing, described brown precipitate thing, 300 ℃ of following being dried, is obtained to yellow carrier hydroxyl oxidize iron powder, i.e. carrier model hydrous iron oxide.When the dilute hydrochloric acid that carrier is put into pH=1~2 soaks 10 hours, preferred pH=1.5.
The condition of applying described in the absorption reaction of above-mentioned removal sulfanilamide (SN) arsenic pyridine is: adsorption temp is 20~30 ℃, preferred normal temperature, adsorption time be 3d (my god); After adsorption equilibrium, the pH of solution is 5.7~6.0 (being preferably 5.8~6.0).In water body, the starting point concentration of sulfapyridine is 2~50mg/L, and agricultural crop straw charcoal is 1:1000~3000 with the mass ratio that contains the water body of sulfapyridine, is preferably 1:2000.
Beneficial effect
1, the straw charcoal of preparation has obvious adsorption to sulfapyridine.This may be mainly because charcoal has the structure of similar gac, has higher specific surface area and microvoid structure, thereby removes efficiently the sulfapyridine in water body.In the present invention, the agricultural crop straw of indication specifically comprises corn and rice straw.The polluted water of processing is the source water containing sulfapyridine.
2, this technical scheme superiority is embodied in simultaneously: 1) the recycling approach of agricultural stalk; 2) impact briquetting preparation; 3) carbon nanometer-biomass carbon matrix material.
3, can artificially effectively control the removal effect of dirty water pollutant, and effectively control the decontamination effect improving of sewage.
4, sorbent material of the present invention, can adsorb a large amount of pollutents, after periodic cleaning, can purify water, and protection of the environment.
5, to utilize the charcoal that agricultural crop straw is made be sorbent material in the present invention, can effectively remove the sulfapyridine in water body.In addition, material preparation of the present invention is simple, easy to operate, with low cost.Visible, the present invention, for removing the sulfapyridine of water body, has good economy and environment benefit.
Embodiment
The production method of agricultural crop straw material:
Agricultural crop straw through drying, after pulverizer pulverizes, be warming up to 500 ℃ and carry out priming reaction, is secondly processed by acid solution, finally washed, dry.Wherein said stalk is to dry by pulverizer to pulverize; After priming reaction, adopt hydrochloric acid and hydrofluoric acid mix acid liquor to process, the mass ratio of the two is 1:1, finally adopts deionized water wash material to neutral.Dry can oven dry at 110 ℃ after washing, is cooled to room temperature after being dried, and is placed in after the interior grinding of mortar, crosses 100 mesh sieves and obtains straw charcoal.
The specific surface area of agricultural crop straw charcoal and pore volume data are in Table 1
The specific surface area of table 1 agricultural crop straw charcoal and pore volume data
Straw charcoal | Specific surface area (m 2/g) | Micro pore volume (cm 3/g) | Cumulative volume (cm 3/g) |
Corn | 280 | 0.11 | 0.17 |
Paddy rice | 319 | 0.14 | 0.22 |
Embodiment 1
The charcoal that the synthetic rice straw of the aforesaid method of take is made is sorbent material, processes the micro-polluted water containing sulfapyridine.In being furnished with the vial of teflon gasket (volume is 22mL), carry out adsorption experiment.Wherein, sorbent material and polluted water mass ratio are 1:3000, and adsorption temp is room temperature, and the starting point concentration of sulfapyridine is 3~24mg/L, and adsorption time is 3d, and after absorption, the pH of solution is 5.80 ± 0.02.The clearance of final sulfapyridine is 40%~93%.
Embodiment 2
The charcoal that the synthetic maize straw of the aforesaid method of take is made is sorbent material, processes the polluted water containing sulfapyridine.
The preparation of sorbent material is with embodiment 1.
Adsorption experiment condition is: in being furnished with the vial of teflon gasket (volume is 22mL), carry out adsorption experiment.Wherein, sorbent material and polluted water mass ratio are 1:3000, and adsorption temp is room temperature, and the starting point concentration of sulfapyridine is 2~50mg/L, and adsorption time is 3d, and after absorption, the pH of solution is 5.80 ± 0.02.The clearance of final sulfapyridine is 41%~95%.
Visible, agricultural crop straw charcoal has good removal effect to the sulfapyridine in water.
The following list 2 of specific experiment result:
Table 2 result summary sheet
The application of a kind of agricultural crop straw charcoal sulfapyridine in Adsorption water body.Wherein agricultural crop straw charcoal is made under hot conditions by agricultural crop straw.
A kind of agricultural crop straw wood charcoal adsorption is removed the method for sulfapyridine in water body, using agricultural crop straw charcoal as sorbent material, drop into containing in the water body of sulfapyridine and carry out sulfapyridine in Adsorption water body, wherein adsorption temp is 20~30 ℃, adsorption time is 72-75 hour, and after adsorption equilibrium, the pH of solution is 5.8~6.0; Wherein in water body, the starting point concentration of sulfapyridine is 2~50mg/L, and agricultural crop straw charcoal is 1:2000~4000 with the mass ratio that contains the water body of sulfapyridine.
Preferably, described a kind of agricultural crop straw wood charcoal adsorption removes that the preparation method of the agricultural crop straw charcoal in the method for sulfapyridine in water body is wherein a kind of is: 1) by agricultural crop straw through drying, pulverizer pulverizes; 2) carry out priming reaction, described priming reaction carries out in being placed in the tool lid crucible of retort furnace, in priming reaction, first slowly heat up 500 ℃, temperature rise rate is 5~10 ℃/min, after being warming up to 500 ℃, continue again reaction 1~3h, by acid solution, process and complete priming reaction afterwards, it is to process with hydrochloric acid and hydrofluoric acid mix acid liquor that described acid solution is processed, and the mass ratio of the two is 1~3:1; 3) after priming reaction, adopt deionized water wash material to neutral; Being dried at 110~112 ℃ after washing dried; After dry, be cooled to room temperature, be placed in after the interior grinding of mortar, cross 100 mesh sieves and obtain straw charcoal;
An application for agricultural crop straw charcoal sulfapyridine in Adsorption water body, drops into containing in the water body of sulfapyridine and carries out sulfapyridine in Adsorption water body agricultural crop straw charcoal as sorbent material.
Preferably, described a kind of agricultural crop straw wood charcoal adsorption is removed the method for sulfapyridine in water body, and after adsorption equilibrium, the pH of solution is 5.8~6.0.
Preferably, described a kind of agricultural crop straw wood charcoal adsorption is removed the method for sulfapyridine in water body: agricultural crop straw charcoal is 1:3000 with the mass ratio that contains the water body of sulfapyridine.
Preferably, in the technical program, for the agricultural crop straw charcoal in the method for Adsorption water body sulfapyridine, also have preparation method as follows: straw charcoal is prepared by following steps:
By agricultural crop straw through drying, pulverizer is ground into after indefinite form particle, 40 mesh sieves sieve sieve after stalk, particle diameter requires 30-40 order; After will sieve after stalk be transferred in tool lid crucible, in the retort furnace of 480~520 ℃, carry out carbonization, carbonization time is 1~3h, the temperature rise rate of retort furnace is at 5~10 ℃/min, cooled carbonized product washs 3-5 time with hydrochloric acid and hydrofluoric acid mix acid liquor successively, and the mass ratio of hydrochloric acid and hydrofluoric acid is 1~3:1, deionized water wash 3-5 time, after being dried, is cooled to room temperature, be placed in after the interior grinding of mortar, cross 100 mesh sieves and obtain straw charcoal.
Preferably, in the technical program, for the agricultural crop straw charcoal in the method for Adsorption water body sulfapyridine, also have a kind of preferably preparation method as follows: straw charcoal is prepared by following steps, a preparation method for agricultural crop straw charcoal in wood charcoal adsorption removal water body in the method for sulfapyridine, straw charcoal is prepared by following steps:
By agricultural crop straw through drying, pulverizer is ground into after indefinite form particle, 40 mesh sieves sieve sieve after stalk, particle diameter requires 30-40 order; According to stalk after described sieving: tackiness agent is 1:(20~50) ratio will sieve after stalk mix with tackiness agent, described tackiness agent is bamboo tar, wood tar oil, coal tar or coal-tar pitch; Magnetic agitation 30min-50min must mix wet feed after the time, described mixing wet feed is transferred to extrusion molding in intermittent type stamping machine, the billot of extruding is cut into the particle of 4-12mm, the particle of above-mentioned 4-12mm is positioned over to coated carbon dust in particle coating machine, after by the transfer of granules after coated, to temperature, be to be dried in the baking oven of 180~200 ℃, time time of drying is 2~3h; After dried product exhibited is transferred in tool lid crucible, in the high temperature process furnances of 480~520 ℃, carry out carbonization, carbonization time is 1~3h, the temperature rise rate of high temperature process furnances is at 5~10 ℃/min, cooled carbonized product washs 3-5 time with hydrochloric acid and hydrofluoric acid mix acid liquor successively, and the mass ratio of hydrochloric acid and hydrofluoric acid is (1~3): 1, deionized water wash is 3-5 time, after being dried, is cooled to room temperature, be placed in after the interior grinding of mortar, cross 100 mesh sieves and obtain straw charcoal.
Also have a kind of method of the Adsorption sulfapyridine that agricultural crop straw charcoal mixes with CNT (carbon nano-tube) of utilizing as follows: a kind of agricultural crop straw wood charcoal adsorption is removed the method for sulfapyridine in water body, it is characterized in that, after agricultural crop straw charcoal mixes with CNT (carbon nano-tube), as compound adsorbent, drop into containing in the water body of sulfapyridine and carry out sulfapyridine in Adsorption water body, wherein agricultural crop straw charcoal and CNT (carbon nano-tube) blending ratio are (1~2): 1, adsorption temp is 20~30 ℃, adsorption time is 72-75 hour, and after adsorption equilibrium, the pH of solution is 5.7~6.0; Wherein in water body, the starting point concentration of sulfapyridine is 2~50mg/L, and agricultural crop straw charcoal is 1:1000~3000 with the mass ratio that contains the water body of sulfapyridine; Described CNT (carbon nano-tube) is multi-walled carbon nano-tubes, and external diameter scope is 10-30nm.
The condition of application described above is: adsorption temp is 20~30 ℃, preferred normal temperature, and adsorption time is 72-75 hour; After adsorption equilibrium, the pH of solution is 5.7~6.0 (being preferably 5.8~6.0).In water body, the starting point concentration of sulfapyridine is 2~50mg/L, and agricultural crop straw charcoal is 1:1000~3000 with the mass ratio that contains the water body of sulfapyridine, is preferably 1:2000.
Enumerate the parameter result of end points and numerical value mid point, those skilled in the art can choose concrete data according to actual needs in interval.
Finally it should be noted that: above embodiment only, in order to technical scheme of the present invention to be described, is not intended to limit; Although the present invention is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (9)
1. an agricultural crop straw wood charcoal adsorption is removed the method for sulfapyridine in water body, it is characterized in that: using agricultural crop straw charcoal as sorbent material, drop into containing in the water body of sulfapyridine and carry out sulfapyridine in Adsorption water body, wherein adsorption temp is 20~30 ℃, adsorption time is 72-75 hour, and after adsorption equilibrium, the pH of solution is 5.8~6.0; Wherein in water body, the starting point concentration of sulfapyridine is 2~50mg/L, and agricultural crop straw charcoal is 1:2000~4000 with the mass ratio that contains the water body of sulfapyridine.
2. a kind of agricultural crop straw wood charcoal adsorption as claimed in claim 1 is removed the preparation method of the agricultural crop straw charcoal in the method for sulfapyridine in water body, it is characterized in that: 1) by agricultural crop straw through drying, pulverizer pulverizes; 2) carry out priming reaction, described priming reaction carries out in being placed in the tool lid crucible of retort furnace, in priming reaction, first slowly heat up 500 ℃, temperature rise rate is 5~10 ℃/min, after being warming up to 500 ℃, continue again reaction 1~3h, by acid solution, process and complete priming reaction afterwards, it is to process with hydrochloric acid and hydrofluoric acid mix acid liquor that described acid solution is processed, and the mass ratio of the two is 1~3:1; 3) after priming reaction, adopt deionized water wash material to neutral; Being dried at 110~112 ℃ after washing dried; After dry, be cooled to room temperature, be placed in after the interior grinding of mortar, cross 100 mesh sieves and obtain straw charcoal.
3. an application for agricultural crop straw charcoal sulfapyridine in Adsorption water body, is characterized in that: using agricultural crop straw charcoal as sorbent material, drop into containing in the water body of sulfapyridine and carry out sulfapyridine in Adsorption water body.
4. a kind of agricultural crop straw wood charcoal adsorption as claimed in claim 1 is removed the method for sulfapyridine in water body, it is characterized in that: after adsorption equilibrium, the pH of solution is 5.8~6.0.
5. a kind of agricultural crop straw wood charcoal adsorption as claimed in claim 1 is removed the method for sulfapyridine in water body, it is characterized in that: agricultural crop straw charcoal is 1:3000 with the mass ratio that contains the water body of sulfapyridine.
6. a kind of agricultural crop straw wood charcoal adsorption as claimed in claim 1 is removed the preparation method of the agricultural crop straw charcoal in the method for sulfapyridine in water body, it is characterized in that straw charcoal prepared by following steps:
By agricultural crop straw through drying, pulverizer is ground into after indefinite form particle, 40 mesh sieves sieve sieve after stalk, particle diameter requires 30-40 order; After will sieve after stalk be transferred in tool lid crucible, in the retort furnace of 480~520 ℃, carry out carbonization, carbonization time is 1~3h, the temperature rise rate of retort furnace is at 5~10 ℃/min, cooled carbonized product washs 3-5 time with hydrochloric acid and hydrofluoric acid mix acid liquor successively, and the mass ratio of hydrochloric acid and hydrofluoric acid is 1~3:1, deionized water wash 3-5 time, after being dried, is cooled to room temperature, be placed in after the interior grinding of mortar, cross 100 mesh sieves and obtain straw charcoal.
7. a kind of agricultural crop straw wood charcoal adsorption as claimed in claim 1 is removed the preparation method of the agricultural crop straw charcoal in the method for sulfamethoxazole in water body, it is characterized in that straw charcoal prepared by following steps:
By agricultural crop straw through drying, pulverizer is ground into after indefinite form particle, 200 mesh sieves sieve sieve after stalk, particle diameter requires 150-180 order; According to stalk after described sieving: tackiness agent is 1:(20~50) ratio will sieve after stalk mix with tackiness agent, described tackiness agent is bamboo tar, wood tar oil, coal tar or coal-tar pitch; Magnetic agitation 30min-50min must mix wet feed after the time, described mixing wet feed is transferred to extrusion molding in intermittent type stamping machine, the billot of extruding is cut into the particle of 4-12mm, the particle of above-mentioned 4-12mm is positioned over to coated carbon dust in particle coating machine, after by the transfer of granules after coated, to temperature, be to be dried in the baking oven of 180~200 ℃, time time of drying is 2~3h; After dried product exhibited is transferred in the retort furnace of 580~620 ℃ and carries out carbonization, carbonization time is 2~10h, the temperature rise rate of retort furnace, at 5~20 ℃/min, adopts hydrogen reducing or protection of inert gas carbonization during carbonization, realize activation simultaneously; Cooled carbonized product, after centrifugation, is used washing with alcohol 3-5 time, deionized water wash 3-5 time successively, is cooled to room temperature and obtains straw charcoal after being dried.
8. a kind of agricultural crop straw wood charcoal adsorption as claimed in claim 1 is removed the preparation method of the agricultural crop straw charcoal in the method for sulfamethoxazole in water body, it is characterized in that straw charcoal prepared by following steps: by agricultural crop straw through drying, pulverizer is ground into after indefinite form particle, 40 mesh sieves sieve sieve after stalk, particle diameter requires 30-40 order; According to stalk after described sieving: tackiness agent is 1:(20~50) ratio will sieve after stalk mix with tackiness agent, described tackiness agent is bamboo tar, wood tar oil, coal tar or coal-tar pitch; Magnetic agitation 30min-50min must mix wet feed after the time, described mixing wet feed is transferred to extrusion molding in intermittent type stamping machine, the billot of extruding is cut into the particle of 4-12mm, the particle of above-mentioned 4-12mm is positioned over to coated carbon dust in particle coating machine, after by the transfer of granules after coated, to temperature, be to be dried in the baking oven of 180~200 ℃, time time of drying is 2~3h; After dried product exhibited is transferred in tool lid crucible, in the high temperature process furnances of 480~520 ℃, carry out carbonization, carbonization time is 1~3h, the temperature rise rate of high temperature process furnances is at 5~10 ℃/min, cooled carbonized product washs 3~5 times with hydrochloric acid and hydrofluoric acid mix acid liquor successively, and the mass ratio of hydrochloric acid and hydrofluoric acid is (1~3): 1, deionized water wash is 3-5 time, after being dried, is cooled to room temperature, be placed in after the interior grinding of mortar, cross 100 mesh sieves and obtain straw charcoal.
9. an agricultural crop straw wood charcoal adsorption is removed the method for sulfapyridine in water body, it is characterized in that, after agricultural crop straw charcoal mixes with CNT (carbon nano-tube), as compound adsorbent, drop into containing in the water body of sulfapyridine and carry out sulfapyridine in Adsorption water body, wherein agricultural crop straw charcoal and CNT (carbon nano-tube) blending ratio are (1~2): 1, adsorption temp is 20~30 ℃, adsorption time is 72-75 hour, and after adsorption equilibrium, the pH of solution is 5.7~6.0; Wherein in water body, the starting point concentration of sulfapyridine is 2~50mg/L, and agricultural crop straw charcoal is 1:1000~3000 with the mass ratio that contains the water body of sulfapyridine; Described CNT (carbon nano-tube) is multiple-wall carbon nanotube, and external diameter scope is 10-30nm.
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