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Magnetic graphene oxide sewage treating agent capable of adsorbing heavy metal ions and preparation method thereof

A technology for adsorbing heavy metals and sewage treatment agents. It is applied in the fields of adsorption water/sewage treatment, water/sewage treatment, water/sludge/sewage treatment, etc. It can solve the problem of poor selectivity of heavy metal ions and achieve strong selectivity and adsorption rate High, not easy to fall off

Inactive Publication Date: 2016-12-14
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 purpose of the present invention is to provide a magnetic graphene oxide sewage treatment agent that adsorbs heavy metal ions

Method used

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  • Magnetic graphene oxide sewage treating agent capable of adsorbing heavy metal ions and preparation method thereof
  • Magnetic graphene oxide sewage treating agent capable of adsorbing heavy metal ions and preparation method thereof
  • Magnetic graphene oxide sewage treating agent capable of adsorbing heavy metal ions and preparation method thereof

Examples

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Effect test

Embodiment 1

[0023] A kind of magnetic graphene oxide sewage treatment agent that adsorbs heavy metal ions, the preparation method is as follows:

[0024] a. Modification of nano-magnetic ferroferric oxide: 1 part of nano-magnetic tri-iron tetroxide is added to 50 parts of 0.05mol HCl solution, ultrasonically treated for 0.5h, filtered, and nano-magnetic ferro-ferric oxide is washed with deionized water until no Chloride ion; In the obtained nanometer magnetic ferric oxide, add 100 parts of ethanol, 15 parts of deionized water, 2.0 parts of 30% ammonia water, 0.2 part of ethyl orthosilicate or methyl orthosilicate, at 32~ React under stirring at 35°C for 10h, then add 0.1 part of siloxane coupling agent, continue to stir and keep warm for 10h; filter, wash the modified nano-magnetic ferriferric oxide with deionized water, and then vacuum dry at 50°C for 12h;

[0025] b. Preparation of magnetic graphene oxide: In a container containing 500 parts of ethanol, add 100 parts of graphene oxide, ...

Embodiment 2

[0027] A kind of magnetic graphene oxide sewage treatment agent that adsorbs heavy metal ions, the preparation method is as follows:

[0028] a. Modification of nano-magnetic ferroferric oxide: Add 1 part of nano-magnetic ferroferric oxide to 50 parts of 0.85mol HCl solution, ultrasonically treat for 20 minutes, filter, and wash nano-magnetic ferroferric oxide with deionized water until chlorine-free ions; in the prepared nano-magnetic ferric oxide, add 100 parts of ethanol, 10 parts of deionized water, 2.0 parts of 30% ammonia water, 0.2 parts of ethyl orthosilicate or methyl orthosilicate, at 25 to 28 React under stirring at ℃ for 8 hours, then add 0.1 part of siloxane coupling agent, continue to stir and keep warm for 8 hours; filter, wash the modified nano-magnetic ferriferric oxide with deionized water, and then vacuum dry at 50 ℃ for 12 hours;

[0029] b. Preparation of magnetic graphene oxide: In a container containing 500 parts of ethanol, add 100 parts of graphene oxi...

Embodiment 3

[0031] A kind of magnetic graphene oxide sewage treatment agent that adsorbs heavy metal ions, the preparation method is as follows:

[0032] a. Modification of nano-magnetic ferroferric oxide: add 1 part of nano-magnetic ferroferric oxide to 50 parts of 0.1mol HCl solution, ultrasonically treat for 20 minutes, filter, and wash nano-magnetic ferroferric oxide with deionized water until chlorine-free ions; in the obtained nano-magnetic ferric oxide, add 100 parts of ethanol, 6 parts of deionized water, 2.0 parts of 30% ammonia water, 0.2 part of ethyl orthosilicate or methyl orthosilicate, at 28 to 30 React under stirring at ℃ for 6 hours, then add 0.1 part of siloxane coupling agent, continue to stir and keep warm for 6 hours; filter, wash the modified nano-magnetic ferriferric oxide with deionized water, and then vacuum dry at 50 ℃ for 12 hours;

[0033] b. Preparation of magnetic graphene oxide: In a container containing 500 parts of ethanol, add 100 parts of graphene oxide,...

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Abstract

The invention relates to a magnetic graphene oxide sewage treating agent capable of adsorbing heavy metal ions. According to the invention, organosiloxane is used for modification of magnetic nanometer ferriferrous oxide, and then the modified magnetic nanometer ferriferrous oxide and graphene oxide are subjected to a modification reaction so as to prepare the sewage treating agent. The working principles of the sewage treating agent are that magnetic iron oxide is used for capturing heavy metal ions in sewage while graphene oxide is used for adsorption of and complexation with metal ions, and through co-action of magnetic iron oxide and graphene oxide, metal ions are firmly adsorbed and hard to fall. The magnetic graphene oxide sewage treating agent prepared in the invention can rapidly capture and firmly adsorb heavy metal ions, especially Pb<2+>, Cr<6+>, Cu<2+>, etc., in sewage, and has good selectivity and high adsorption rate, and graphene oxide exerts complexation effect on metal ions; thus, adsorbed heavy metal ions are hard to fall, and the sewage treating agent has excellent effect and is widely applicable to treatment of industrial sewage.

Description

technical field [0001] The invention belongs to the technical field of industrial sewage treatment, and in particular relates to a magnetic graphene oxide sewage treatment agent for absorbing heavy metal ions and a preparation method thereof. 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 tow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22C02F1/28B01J20/28B01J20/30C02F101/20C02F101/22
CPCB01J20/06B01J20/20B01J20/223B01J20/28009C02F1/288C02F2101/20C02F2101/22
Inventor 谢义鹏许钧强康伦国姚东生
Owner UNION FOSHAN CHEM
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