CN112897628A - Method for adsorbing pollutants by applying biochar material in DOM (document object model) environment - Google Patents
Method for adsorbing pollutants by applying biochar material in DOM (document object model) environment Download PDFInfo
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- CN112897628A CN112897628A CN202110234069.0A CN202110234069A CN112897628A CN 112897628 A CN112897628 A CN 112897628A CN 202110234069 A CN202110234069 A CN 202110234069A CN 112897628 A CN112897628 A CN 112897628A
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- China
- Prior art keywords
- biochar
- pollutants
- environment
- dom
- adsorbing
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Classifications
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
Abstract
The invention provides a method for adsorbing pollutants by applying a biochar material in a DOM (document object model) environment, which mainly comprises the following steps of: adding the biochar into a polluted water environment to adsorb pollutants; centrifugally separating the biochar material after adsorption; further membrane filtering to obtain water body with removed pollutant. The method has the advantages that: provides a technical method for reference in order to solve the problem of removing pollutants in a complex environment in which soluble organic matters (DOM) exist. The biochar material which is wide in raw material and easy to prepare can be applied to the water environment, and the biochar material is added to a polluted water body according to a certain proportion to adsorb and remove pollutants, so that the environmental pollution concentration in the water body can be greatly reduced.
Description
Technical Field
The invention belongs to the technical field of application of biomass materials, and particularly relates to a method for adsorbing pollutants by applying a biochar material in a DOM (document object model) environment.
Background
The biochar is proved to be a good adsorbing material due to the excellent surface porous structure, and is applied to adsorbing and removing pollutants in various environments. Practical application of biochar to the adsorption of pollutants is accompanied by a series of practical problems. Such as large amounts of soluble organic matter present in soil and aqueous environments, the presence of which necessarily affects the actual adsorption of pollutants by biochar. The soil environment contains organic matter components including DOM, which are important components of the soil and important factors influencing the growth of plants; in particular, the application of organic fertilizers like in agricultural fields increases the organic matter content in the soil, so that the soil fertility is enhanced. And organic matters such as DOM in the environment can be dissolved in the aqueous phase and can have strong fluidity in the multi-media. How to prevent the migration of contaminants in the environment in which organic matter (especially DOM) exists requires research into relevant contaminant retention methods and techniques. Therefore, the important point of the patent is to design a method for adsorbing and holding the pollutants by the biochar in a DOM environment.
The invention content is as follows:
the invention aims to solve the problem of removing pollutants under the condition of DOM in an environmental medium, and provides a method for adsorbing pollutants by applying a biochar material in a DOM environment.
The method for adsorbing the pollutants by applying the biochar material in the DOM environment comprises the following steps:
(1) adding biochar into a polluted water solution to adsorb pollutants, wherein the ratio of the added biochar to the water solution is 1g:400 ml;
(2) placing the water solution added with the biochar in a bottle, and adsorbing and removing pollutants on a shaking table at the temperature of 25 ℃, wherein the rotation speed of the shaking table is 150 revolutions per minute, and the adsorption time is 24 hours;
(3) after the adsorption is finished, taking out the mixed solution, centrifugally separating the biochar, and taking out the supernatant;
(4) and further filtering the supernatant through a 0.45um filter membrane to obtain the water body with the removed pollutants.
Wherein the biochar is prepared by calcining pine wood powder at high temperature;
wherein, the DOM concentration range except the target pollutant in the polluted water environment is 100-600 mg/L.
The method has the advantages that: in order to solve the problem of removing pollutants in a complex environment in DOM (document object model), a technical method is provided for reference. The biochar material which is wide in raw material and easy to prepare can be applied to the water environment, and the biochar material is added to a polluted water body according to a certain proportion to adsorb and remove pollutants, so that the environmental pollution concentration in the water body can be greatly reduced.
Detailed Description
The present invention is further described in the following examples, but the technical content described in the examples is illustrative and not restrictive, and the scope of the present invention should not be limited thereby.
Example 1
a. Adding the biochar into 20ml of phenol-containing aqueous solution for phenol adsorption, wherein the adding amount of the biochar is 0.05g, and the concentration of phenol in the water environment is 80 mg/L;
b. placing the phenol aqueous solution added with the biochar in a conical flask, and adsorbing and removing on a shaking table at the temperature of 25 ℃, wherein the rotation speed of the shaking table is 150 revolutions per minute, and the adsorption time is 24 hours;
c. after the adsorption is finished, taking out the mixed solution, centrifugally separating the biochar, and taking out the supernatant;
d. and (4) further filtering the supernatant through a 0.45um filter membrane to obtain the aqueous solution after phenol pollution removal treatment.
Wherein the biochar is prepared by calcining pine wood powder at high temperature;
wherein, in the phenol water solution, the DOM concentration except phenol is 110 mg/L.
In phenol water solution with DOM concentration of 110mg/L, the phenol residual concentration in the water environment is greatly reduced after 24-hour adsorption treatment by using a biochar material adsorption method, and the concentration is reduced to 15mg/L
Example 2
a. Adding the biochar into 20ml of phenol-containing aqueous solution for phenol adsorption, wherein the adding amount of the biochar is 0.05g, and the concentration of phenol in the water environment is 80 mg/L;
b. placing the phenol aqueous solution added with the biochar in a conical flask, and adsorbing and removing on a shaking table at the temperature of 25 ℃, wherein the rotation speed of the shaking table is 150 revolutions per minute, and the adsorption time is 24 hours;
c. after the adsorption is finished, taking out the mixed solution, centrifugally separating the biochar, and taking out the supernatant;
d. and (4) further filtering the supernatant through a 0.45um filter membrane to obtain the aqueous solution after phenol pollution removal treatment.
Wherein the biochar is prepared by calcining pine wood powder at high temperature;
wherein, in the phenol aqueous solution, the DOM concentration except phenol is 276 mg/L.
In a phenol aqueous solution with DOM concentration of 276mg/L, the phenol residual concentration in the water environment is greatly reduced to 17mg/L after 24-hour adsorption treatment by using a charcoal material adsorption method.
Claims (3)
1. A method of adsorbing contaminants using a biochar material in a DOM environment, the method comprising the steps of:
a. adding biochar into a polluted water solution to adsorb pollutants, wherein the ratio of the added biochar to the water solution is 1g:400 ml;
b. placing the water solution added with the biochar in a bottle, and adsorbing and removing pollutants on a shaking table at the temperature of 25 ℃, wherein the rotation speed of the shaking table is 150 revolutions per minute, and the adsorption time is 24 hours;
c. after the adsorption is finished, taking out the mixed solution, centrifugally separating the biochar, and taking out the supernatant;
d. and further filtering the supernatant through a 0.45um filter membrane to obtain the water body with the removed pollutants.
2. The application method of claim 1, wherein the biochar is prepared by calcining pine wood powder at high temperature.
3. The method of claim 1, wherein the DOM concentration in the contaminated aqueous environment excluding the target contaminant is in the range of 100-600 mg/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110234069.0A CN112897628A (en) | 2021-03-03 | 2021-03-03 | Method for adsorbing pollutants by applying biochar material in DOM (document object model) environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110234069.0A CN112897628A (en) | 2021-03-03 | 2021-03-03 | Method for adsorbing pollutants by applying biochar material in DOM (document object model) environment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112897628A true CN112897628A (en) | 2021-06-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110234069.0A Pending CN112897628A (en) | 2021-03-03 | 2021-03-03 | Method for adsorbing pollutants by applying biochar material in DOM (document object model) environment |
Country Status (1)
| Country | Link |
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| CN (1) | CN112897628A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160096746A1 (en) * | 2014-09-23 | 2016-04-07 | Southwest Research Institute | Biochar treatment of contaminated water |
| CN111704130A (en) * | 2020-06-28 | 2020-09-25 | 南通大学 | Preparation method of blue algae biochar for purifying cationic yellow dye wastewater |
-
2021
- 2021-03-03 CN CN202110234069.0A patent/CN112897628A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160096746A1 (en) * | 2014-09-23 | 2016-04-07 | Southwest Research Institute | Biochar treatment of contaminated water |
| CN111704130A (en) * | 2020-06-28 | 2020-09-25 | 南通大学 | Preparation method of blue algae biochar for purifying cationic yellow dye wastewater |
Non-Patent Citations (2)
| Title |
|---|
| XUEYANG等: "Study on the long-term effects of DOM on the adsorption of BPS by biochar", 《CHEMOSPHERE》 * |
| 李丹等: "水稻秸秆生物炭对罗丹明 B 的吸附与降解", 《环境工程学》 * |
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Application publication date: 20210604 |
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