Chemical modified graphene oxide ionic type sewage treatment agent and preparation method thereof

A sewage treatment agent and chemical modification technology, applied in water/sewage treatment, chemical instruments and methods, adsorption water/sewage treatment, etc., can solve problems such as poor selectivity of heavy metal ions

Inactive Publication Date: 2016-11-30
UNION FOSHAN CHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the problem of poor selectivity of heavy metal ions in existing sewage treatment agents, the primary pu...

Method used

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  • Chemical modified graphene oxide ionic type sewage treatment agent and preparation method thereof
  • Chemical modified graphene oxide ionic type sewage treatment agent and preparation method thereof
  • Chemical modified graphene oxide ionic type sewage treatment agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A chemically modified graphene oxide ionic sewage treatment agent, its preparation method is as follows:

[0025] a, graphene oxide treatment: use 0.70mol / L hydrochloric acid solution, deionized water to wash graphene oxide (self-made or purchased) successively, filter, and vacuum dry to obtain processed graphene oxide;

[0026] b. Preparation of organophosphate siloxane coupling agent: add 5 parts of nitrogen-containing organophosphate compound and 4.8 parts of tetramethoxysilane into methanol or ethanol solution, and stir for 2 hours at 28-30°C;

[0027] c. Silanization modification of graphene oxide: add 72 parts of graphene oxide in a to the solution in b, stir at 28-30°C for 24h, filter, wash with methanol or ethanol and water, and vacuum dry at 40°C for 24h. A chemically modified graphene oxide ionic sewage treatment agent is prepared.

Embodiment 2

[0029] A chemically modified graphene oxide ionic sewage treatment agent, its preparation method is as follows:

[0030] a, graphene oxide treatment: use 0.05mol / L hydrochloric acid solution, deionized water to wash graphene oxide (self-made or purchased) successively, filter, and vacuum dry to obtain processed graphene oxide;

[0031] b. Preparation of organophosphate siloxane coupling agent: in methanol or ethanol solution, add 5 parts of nitrogen-containing organophosphate compound, 4 parts of γ-(methacryloyloxy)propyltrimethoxysilane, Stir at 32~35°C for 2h;

[0032] c. Silanization modification of graphene oxide: add 50 parts of graphene oxide in a to the solution in b, stir at 35°C for 24h, filter, wash with methanol or ethanol and water, and dry in vacuum at 50°C for 24h to obtain A chemically modified graphene oxide ionic sewage treatment agent.

Embodiment 3

[0034] A chemically modified graphene oxide ionic sewage treatment agent, its preparation method is as follows:

[0035] a, graphene oxide treatment: adopt 0.80mol / L hydrochloric acid solution, deionized water to wash graphene oxide (self-made or purchased) successively, filter, vacuum dry, obtain the graphene oxide after processing;

[0036] b. Preparation of organophosphate siloxane coupling agent: in methanol or ethanol solution, add 5 parts of nitrogen-containing organophosphate compound, 4 parts of γ-(2,3-epoxypropoxy)propyltrimethoxy Silane, stirred at 25-28°C for 2h;

[0037] c. Silanization modification of graphene oxide: add 60 parts of graphene oxide in a to the solution in b, stir at 25°C for 24h, filter, wash with methanol or ethanol and water, and dry in vacuum at 45°C for 24h to obtain A chemically modified graphene oxide ionic sewage treatment agent.

[0038] Contrast the effect on heavy metal ions: control other conditions to be the same, get the same mass of...

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PUM

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Abstract

The invention relates to a chemically modified graphene oxide ionic sewage treatment agent, which is characterized in that the modified graphene oxide is formed by connecting graphene oxide and organic phosphate through chemical bonds formed by organosiloxane; The adsorption of graphene oxide to high-valent metals, the complexation of organic phosphate and carboxylate to metal ions, and its application to heavy metal ion sewage treatment, a chemically modified graphene oxide ion-type sewage treatment agent of the present invention , for Pb 2+ 、Cr 6+ The adsorption capacity of heavy metal ions such as ions is far greater than that of graphene oxide; the invention also provides a preparation method of chemically modified graphene oxide ion adsorption sewage treatment agent. The graphene oxide ionic sewage treatment agent prepared by the invention has strong selectivity for heavy metal ion adsorption and excellent effect, and can be used for industrial sewage treatment containing heavy metal ions.

Description

technical field [0001] The invention belongs to the technical field of industrial sewage treatment, and in particular relates to a chemically modified graphene oxide ionic sewage treatment agent and a preparation method. technical background [0002] Since the reform and opening up, my country's industrial industry has made great progress, but at the same time it has caused serious water pollution problems. According to statistics, only 10% of domestic sewage and 70% of industrial sewage are treated in the country's annual sewage discharge, and the effluent of about half of the industrial sewage treatment facilities does not meet the national discharge standards, and the rest of the untreated sewage is directly discharged into In the rivers and lakes, the water environment of our country has been seriously polluted and destroyed; the discharge of urban domestic sewage is showing an increasing trend with the construction and development of cities and towns. Among them, the c...

Claims

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Application Information

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IPC IPC(8): C02F1/28C02F1/62B01J20/22C07F9/564
CPCC02F1/285B01J20/22C07F9/564
Inventor 谢义鹏许钧强康伦国姚东生
Owner UNION FOSHAN CHEM
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