CN112246216A - Preparation method of modified bentonite applied to antimony-containing wastewater treatment - Google Patents
Preparation method of modified bentonite applied to antimony-containing wastewater treatment Download PDFInfo
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- CN112246216A CN112246216A CN202011043636.6A CN202011043636A CN112246216A CN 112246216 A CN112246216 A CN 112246216A CN 202011043636 A CN202011043636 A CN 202011043636A CN 112246216 A CN112246216 A CN 112246216A
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- bentonite
- antimony
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- modified bentonite
- containing wastewater
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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
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/12—Naturally occurring clays or bleaching earth
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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
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
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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
- C02F2101/10—Inorganic compounds
Abstract
The invention discloses a preparation method of modified bentonite for treating antimony-containing wastewater, which comprises the steps of uniformly mixing bentonite, sodium alginate and beta-cyclodextrin, placing the mixture in a tube furnace, calcining the mixture in the air atmosphere, cooling and taking out the calcined mixture; adding into a beaker filled with deionized water, then adding polyacrylamide, polymeric ferric sulfate and octadecyl trimethyl ammonium bromide, stirring and reacting at a certain temperature, cooling, filtering, and drying at 60 ℃ to obtain the modified bentonite. The modified bentonite prepared by the invention adsorbs Sb in water environment3+Or Sb5+Obviously improves the removal efficiency of antimony, reduces the removal cost, and uses materialsNo toxicity, no harm and environmental protection.
Description
Technical Field
The invention belongs to the technical field of environmental protection, and particularly relates to a preparation method of modified bentonite applied to antimony-containing wastewater treatment.
Background
The antimony is a silver luster metalloid, and the abundance in the earth crust is 0.2-0.5 mg/kg. Although this element is not abundant, it is still present in over one hundred minerals. The toxicity of antimony depends on the degree of oxidation of the environment, the solubility of the compound, and the interaction of antimony with the complex. The toxicity of the trivalent antimony is 10 times that of the pentavalent antimony, the toxicity of the inorganic antimony is higher than that of the organic antimony, the toxicity of the water-soluble antimony compound is stronger than that of the insoluble compound, and the toxicity of the antimony element dust is stronger than that of other antimony-containing compounds. Antimony is an unnecessary element for plants, but can be absorbed by plants and crops. Antimony and compounds can enter human body through respiratory tract, digestive tract or skin, combine with sulfhydryl in human body, interfere enzyme activity in vivo or destroy intracellular ion balance to make cell lack of oxygen to cause metabolic disorder of human body, mainly manifested by antimony dermatitis, antimony pneumoconiosis, liver, kidney and myocardial damage. Acute antimony poisoning can cause damage to multiple tissues and organs such as skin mucosa, heart, liver, lung and nervous system, and is clinically manifested by symptoms such as emesis, abdominal pain, diarrhea, hematuria, hepatomegaly, spasm and heart rate disorder, and chronic antimony poisoning can cause symptoms such as headache, excitement, insomnia, vertigo, limb soreness, anemia and marasmus.
There have been many studies on the removal of antimony from water, and conventional treatment methods mainly include coagulation precipitation, ion exchange, membrane separation, chemical remediation, biological remediation, and electrochemistry. The adsorption method is a water treatment method with low cost, high efficiency and difficult secondary pollution. Documents Xi J H, He M C, Lin C Y.Adsorption of anti (III) and anti (V) on bentonites: kinetics, thermomomymics and evaluation [ J ]. Microchemical Journal,2011,97(1):86-91. Studies using the adsorption of antimony by bentonite show excellent adsorption capacity of antimony ions, but bentonite has certain defects in the adsorption of antimony, and diatomaceous earth shows excellent adsorption capacity of antimony when the concentration of antimony is low, but has poor adsorption capacity when the concentration of antimony is high.
Disclosure of Invention
Aiming at the defect that the adsorption performance of bentonite is deteriorated and the application range of the bentonite is limited when the concentration of antimony ions is higher than 50mg/L, the invention aims to provide a preparation method of modified bentonite for treating antimony-containing wastewater, which comprises the following steps:
s1: uniformly mixing bentonite, sodium alginate and beta-cyclodextrin, then placing the mixture in a tube furnace, calcining the mixture for 3 to 6 hours at 500 to 700 ℃ in the air atmosphere, naturally cooling the mixture, and taking the mixture out.
S2: and (4) adding the bentonite obtained in the step (S1) into a beaker filled with deionized water, then adding polyacrylamide, polymeric ferric sulfate and octadecyl trimethyl ammonium bromide, stirring and reacting for 15-26 h at 70-95 ℃, cooling, filtering, and drying at 60 ℃ to obtain the modified bentonite.
Preferably, the weight ratio of the bentonite, the sodium alginate and the beta-cyclodextrin in the step S1 is 1: 0.02-0.08: 0.03-0.14.
Preferably, the calcination temperature in step S1 is 500 to 600 ℃.
Preferably, the weight ratio of the bentonite, the polyacrylamide, the polymeric ferric sulfate and the octadecyl trimethyl ammonium bromide in the step S2 is 1: 0.2-0.5: 0.3-0.6: 1.2-1.6.
The invention has the following beneficial effects:
(1) the traditional adsorbing material has unstable suspension and sedimentation performance in water environment, needs stirring to increase the suspension property in the adsorption process, often needs auxiliary means such as centrifugal filtration in the solid-liquid separation process and the like, and has long time consumption, but the modified bentonite adopted by the invention can be well suspended and dispersed in the water solution without using auxiliary means such as stirring and the like due to the nuclear hydroxyl complex with various components on the surface, and Sb is not stable in the water solution3+Or Sb5+Fully contacts with the modified bentonite, and is convenient to adsorb Sb in the water solution3+Or Sb5+The adsorption equilibrium can be reached quickly, so that the antimony in the water body can be removed more quickly.
(2) The modified bentonite prepared by the invention removes partial impurities of the bentonite in the calcining process, wherein sodium alginate and beta-cyclodextrin are added to form pores in the calcining process, so that the specific surface area of the bentonite is improved, and the used positions are environment-friendly, so that secondary pollution to the environment is avoided.
(3) The modified bentonite prepared by the invention adsorbs Sb in water environment3+Or Sb5+The method obviously improves the removal efficiency of antimony, reduces the removal cost, and uses non-toxic and harmless materials and is environment-friendly.
Detailed Description
The following examples are provided for the purpose of illustration, and the present invention is not limited to the following examples.
Example 1
S1: uniformly mixing bentonite, sodium alginate and beta-cyclodextrin in a weight ratio of 1:0.02:0.03, placing the mixture in a tubular furnace, calcining the mixture for 3 hours at 500 ℃ in the air atmosphere, naturally cooling the mixture, and taking the mixture out.
S2: and (3) adding the bentonite obtained in the step (S1) into a beaker filled with deionized water, then adding polyacrylamide, polymeric ferric sulfate and octadecyl trimethyl ammonium bromide, stirring and reacting for 15 hours at 70 ℃, wherein the weight ratio of the bentonite to the polyacrylamide to the polymeric ferric sulfate to the octadecyl trimethyl ammonium bromide is 1:0.2:0.3:1.2, cooling, filtering, and drying at 60 ℃ to obtain the modified bentonite.
Example 2
S1: uniformly mixing bentonite, sodium alginate and beta-cyclodextrin in a weight ratio of 1:0.08:0.14, placing the mixture in a tubular furnace, calcining the mixture for 6 hours at 700 ℃ in the air atmosphere, naturally cooling the mixture, and taking the mixture out.
S2: and (3) adding the bentonite obtained in the step (S1) into a beaker filled with deionized water, then adding polyacrylamide, polymeric ferric sulfate and octadecyl trimethyl ammonium bromide, stirring and reacting for 26 hours at 95 ℃, wherein the weight ratio of the bentonite to the polyacrylamide to the polymeric ferric sulfate to the octadecyl trimethyl ammonium bromide is 1:0.5:0.6:1.6, cooling, filtering, and drying at 60 ℃ to obtain the modified bentonite.
Example 3
S1: uniformly mixing bentonite, sodium alginate and beta-cyclodextrin in a weight ratio of 1:0.05:0.08, placing the mixture in a tubular furnace, calcining the mixture for 4 hours at 600 ℃ in the air atmosphere, naturally cooling the mixture, and taking the mixture out.
S2: and (3) adding the bentonite obtained in the step (S1) into a beaker filled with deionized water, then adding polyacrylamide, polymeric ferric sulfate and octadecyl trimethyl ammonium bromide, stirring and reacting for 20 hours at the temperature of 80 ℃, wherein the weight ratio of the bentonite to the polyacrylamide to the polymeric ferric sulfate to the octadecyl trimethyl ammonium bromide is 1:0.3:0.4:1.4, cooling, filtering, and drying at the temperature of 60 ℃ to obtain the modified bentonite.
Example 4
S1: uniformly mixing bentonite, sodium alginate and beta-cyclodextrin in a weight ratio of 1:0.06:0.12, placing the mixture in a tube furnace, calcining the mixture for 5 hours at 650 ℃ in the air atmosphere, naturally cooling the mixture, and taking the mixture out.
S2: and (3) adding the bentonite obtained in the step (S1) into a beaker filled with deionized water, then adding polyacrylamide, polymeric ferric sulfate and octadecyl trimethyl ammonium bromide, stirring and reacting for 24 hours at 90 ℃, wherein the weight ratio of the bentonite to the polyacrylamide to the polymeric ferric sulfate to the octadecyl trimethyl ammonium bromide is 1:0.4:0.5:1.5, cooling, filtering, and drying at 60 ℃ to obtain the modified bentonite.
And (3) performance testing: adding the modified diatomite prepared in the examples 1-4 and the diatomite prepared from bentonite into 100ml of 10mg/L Sb3+Or Sb5+The solution (2) was adsorbed for 60min, and the test results are shown in the following table 1:
TABLE 1 antimony adsorption (10mg/L)
| Example 1 | Example 2 | Example 3 | Example 4 | Bentonite clay | |
| Adsorption Capacity (mg/g) | 36.6 | 37.8 | 37.1 | 36.9 | 32.1 |
Adding the modified diatomite prepared in the examples 1-4 and the diatomite prepared from bentonite into 100ml of 30mg/L Sb3+Or Sb5+The solution (2) was adsorbed for 60min, and the test results are shown in the following table 2:
TABLE 2 antimony adsorption (30mg/L)
| Example 1 | Example 2 | Example 3 | Example 4 | Bentonite clay | |
| Adsorption Capacity (mg/g) | 35.8 | 36.1 | 35.9 | 36.3 | 30.2 |
Adding the modified diatomite prepared in the examples 1-4 and the diatomite prepared from bentonite into 100ml of 50mg/L Sb3+Or Sb5+The solution (2) was adsorbed for 60min, and the test results are shown in the following table 3:
TABLE 3 antimony adsorption (50mg/L)
| Example 1 | Example 2 | Example 3 | Example 4 | Bentonite clay | |
| Adsorption Capacity (mg/g) | 35.1 | 35.1 | 35.3 | 34.9 | 25.4 |
Adding 100ml of 60mg/L Sb into diatomite prepared from the modified diatomite prepared in examples 1-4 and bentonite3+Or Sb5+The solution (2) was adsorbed for 60min, and the test results are shown in the following table 4:
TABLE 4 antimony adsorption (60mg/L)
| Example 1 | Example 2 | Example 3 | Example 4 | Bentonite clay | |
| Adsorption Capacity (mg/g) | 34.5 | 34.6 | 34.4 | 34.4 | 20.3 |
Adding the modified diatomite prepared in the examples 1-4 and the diatomite prepared from bentonite into 100ml of 80mg/L Sb3+Or Sb5+The solution (2) was adsorbed for 60min, and the test results are shown in the following table 5:
TABLE 5 antimony adsorption (80mg/L)
| Example 1 | Example 2 | Example 3 | Example 4 | Bentonite clay | |
| Adsorption Capacity (mg/g) | 33.9 | 33.6 | 33.7 | 33.8 | 17.6 |
As can be seen from tables 1 to 5, when the concentration of antimony ions is increased from 10mg/L to 80mg/L, the adsorption rate of the modified bentonite to the antimony ions is from 98% to 92%, and the adsorption rate of the unmodified bentonite to the antimony ions is reduced from 97% to 55%, which indicates that the bentonite modified by the method of the present invention can still maintain excellent antimony ion adsorption performance at high antimony ion concentration.
Claims (4)
1. A preparation method of modified bentonite applied to antimony-containing wastewater treatment is characterized by comprising the following steps:
s1: uniformly mixing bentonite, sodium alginate and beta-cyclodextrin, then placing the mixture in a tube furnace, calcining the mixture for 3 to 6 hours at 500 to 700 ℃ in the air atmosphere, naturally cooling the mixture, and taking the mixture out;
s2: and (4) adding the bentonite obtained in the step (S1) into a beaker filled with deionized water, then adding polyacrylamide, polymeric ferric sulfate and octadecyl trimethyl ammonium bromide, stirring and reacting for 15-26 h at 70-95 ℃, cooling, filtering, and drying at 60 ℃ to obtain the modified bentonite.
2. The method for preparing modified bentonite for treating antimony-containing wastewater according to claim 1, wherein the weight ratio of bentonite, sodium alginate and beta-cyclodextrin in step S1 is 1: 0.02-0.08: 0.03-0.14.
3. The method for preparing modified bentonite for treating antimony-containing wastewater according to claim 1, wherein the calcination temperature in step S1 is 500-600 ℃.
4. The preparation method of the modified bentonite applied to antimony-containing wastewater treatment according to claim 1, wherein the weight ratio of the bentonite to the polyacrylamide to the polymeric ferric sulfate to the octadecyl trimethyl ammonium bromide in the step S2 is 1: 0.2-0.5: 0.3-0.6: 1.2-1.6.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113771447A (en) * | 2021-10-15 | 2021-12-10 | 鸿星尔克(绵阳)实业有限公司 | High-elasticity smooth antibacterial fabric and sport pants |
| CN116854180A (en) * | 2023-09-04 | 2023-10-10 | 杭州尚善若水环保科技有限公司 | Fluorine removing agent mixture and application thereof |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005254077A (en) * | 2004-03-09 | 2005-09-22 | Sumitomo Osaka Cement Co Ltd | Method for manufacturing heavy metal adsorbent and adsorbent obtained thereby |
| CN101480602A (en) * | 2008-12-31 | 2009-07-15 | 湘潭大学 | Method for handling sudden organic pollution event |
| CN102358634A (en) * | 2011-09-06 | 2012-02-22 | 浙江大学 | Deep treatment method for coking waste water |
| CN102583630A (en) * | 2012-03-01 | 2012-07-18 | 山西大同大学 | Method for treating antimony-containing waste water by modified bentonite |
| US20140124447A1 (en) * | 2012-11-06 | 2014-05-08 | Thatcher Company | Formulations and methods for removing heavy metals from waste solutions containing chelating agents |
| CN106915779A (en) * | 2015-12-24 | 2017-07-04 | 天津绿格瑞科技发展有限公司 | A kind of municipal sewage imitates inorganic agent entirely |
| CN107321332A (en) * | 2017-09-01 | 2017-11-07 | 重庆卡美伦科技有限公司合川分公司 | A kind of environmentally friendly bentone adsorbent and preparation method thereof |
| CN109179531A (en) * | 2018-10-30 | 2019-01-11 | 薛燕 | A kind of sewage-treating agent and preparation method thereof |
| CN109205704A (en) * | 2018-11-13 | 2019-01-15 | 千水清源（湖北）科技有限公司 | A kind of water treatment agent |
| CN110054314A (en) * | 2019-03-27 | 2019-07-26 | 浙江理工大学 | A method of utilizing antimony ion in hydroxyapatite & bodied ferric sulfate & polyacrylamide coagulation removal dyeing waste water |
-
2020
- 2020-09-28 CN CN202011043636.6A patent/CN112246216A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005254077A (en) * | 2004-03-09 | 2005-09-22 | Sumitomo Osaka Cement Co Ltd | Method for manufacturing heavy metal adsorbent and adsorbent obtained thereby |
| CN101480602A (en) * | 2008-12-31 | 2009-07-15 | 湘潭大学 | Method for handling sudden organic pollution event |
| CN102358634A (en) * | 2011-09-06 | 2012-02-22 | 浙江大学 | Deep treatment method for coking waste water |
| CN102583630A (en) * | 2012-03-01 | 2012-07-18 | 山西大同大学 | Method for treating antimony-containing waste water by modified bentonite |
| US20140124447A1 (en) * | 2012-11-06 | 2014-05-08 | Thatcher Company | Formulations and methods for removing heavy metals from waste solutions containing chelating agents |
| CN106915779A (en) * | 2015-12-24 | 2017-07-04 | 天津绿格瑞科技发展有限公司 | A kind of municipal sewage imitates inorganic agent entirely |
| CN107321332A (en) * | 2017-09-01 | 2017-11-07 | 重庆卡美伦科技有限公司合川分公司 | A kind of environmentally friendly bentone adsorbent and preparation method thereof |
| CN109179531A (en) * | 2018-10-30 | 2019-01-11 | 薛燕 | A kind of sewage-treating agent and preparation method thereof |
| CN109205704A (en) * | 2018-11-13 | 2019-01-15 | 千水清源（湖北）科技有限公司 | A kind of water treatment agent |
| CN110054314A (en) * | 2019-03-27 | 2019-07-26 | 浙江理工大学 | A method of utilizing antimony ion in hydroxyapatite & bodied ferric sulfate & polyacrylamide coagulation removal dyeing waste water |
Non-Patent Citations (3)
| Title |
|---|
| 席国喜等: "海藻酸钠的热分解研究", 《化学世界》 * |
| 李晓桃等: "β—环糊精的热稳定性及分解动力学研究", 《河南师范大学学报(自然科学版)》 * |
| 杨秀贞: "吸附法处理含锑废水技术进展", 《广东化工》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113771447A (en) * | 2021-10-15 | 2021-12-10 | 鸿星尔克(绵阳)实业有限公司 | High-elasticity smooth antibacterial fabric and sport pants |
| CN116854180A (en) * | 2023-09-04 | 2023-10-10 | 杭州尚善若水环保科技有限公司 | Fluorine removing agent mixture and application thereof |
| CN116854180B (en) * | 2023-09-04 | 2023-12-15 | 杭州尚善若水环保科技有限公司 | Fluorine removing agent mixture and application thereof |
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Application publication date: 20210122 |