Coconut fiber composite nanometer iron oxide heavy metal stabilizer and preparation method thereof

A technology of nano-iron oxides and heavy metal stabilizers, which is applied in chemical instruments and methods, water pollutants, and other chemical processes, can solve problems such as land occupation and adverse environmental impacts, and achieve high adsorption efficiency, environmental friendliness, and improved The effect of adsorption efficiency

Inactive Publication Date: 2018-05-08
MAANSHAN JUNJUN FOOD TECH
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

In the process of urban construction and building demolition, a large amount of fly ash waste bricks will be produced. These wastes will accumulate in large quantities, not only occupying land, but also adversely affecting the environment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] A kind of coconut shell fiber composite nano-iron oxide heavy metal stabilizer, prepared by the following method:

[0021] (1) Dry the coconut shell and chop it into small pieces, immerse it in 4g / L acetic acid solution for 60 minutes, take it out, wash it with water until neutral, then immerse it in 10% sodium hydroxide, 3% Heating to 60°C in a sodium carbonate mixed solution, steaming for 120 minutes, taking out after cooling, washing with water until neutral, and obtaining pretreated coconut shell fiber for later use;

[0022] (2) dissolving chitosan in 30% polyacrylic acid solution, the amount of chitosan added is 18% of the mass of polyacrylic acid solution, and stirring evenly to obtain chitosan solution;

[0023] (3) Mix 0.5mol / L magnesium sulfate solution and 1mol / L sodium hydroxide solution in equal volumes, stir for 10 minutes, then add magnesium sulfate powder to it, heat at 110°C for 10 hours, and obtain a solid after natural cooling Precipitation, after dr...

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Abstract

The invention discloses a coconut fiber composite nanometer iron oxide heavy metal stabilizer and a preparation method thereof. The coconut fiber composite nanometer iron oxide heavy metal stabilizeris prepared from raw materials like coconut shell, chitosan, sodium carbonate, iron chloride and fly ash. According to the invention, homogeneous purified plant cellulose is obtained through multi-step processes of acid pickling, caustic washing and water washing of the coconut shell, and nanometer iron oxide is synthesized by utilizing a water phase, so adsorption varieties of pollutants are expanded; the efficiency of adsorption to heavy metals is improved; meanwhile, the coconut fiber composite nanometer iron oxide heavy metal stabilizer has good biological compatibility and can be appliedto treatment of heavy metal pollution and organic matter pollution in the environment. The heavy metal stabilizer provided by the invention is environment-friendly, has high adsorption efficiency, andis applicable to application in various environmental treatment projects.

Description

technical field [0001] The invention relates to the technical field of remediation of heavy metal pollution, in particular to a coconut shell fiber composite nano-iron oxide heavy metal stabilizer and a preparation method thereof. Background technique [0002] With the rapid development of the economy, especially the human activities in mining, metallurgy, chemical industry and other industries, the problem of heavy metal pollution is becoming more and more serious. Heavy metal pollution problems include heavy metal soil pollution, heavy metal air pollution, and heavy metal water pollution. Heavy metals exist in the environment in different forms, accumulate, migrate, enter the human body and combine with biological enzymes to inhibit protein synthesis, induce protein denaturation, and interfere with the nervous system. Excessive enrichment of heavy metals in the food chain will cause serious damage to the natural environment and human health. At the same time, heavy metal ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30C02F1/28B01D53/02B09C1/08C02F101/20
CPCB01J20/24B01D53/02B01J20/06B09C1/08C02F1/28C02F1/281C02F1/286C02F2101/20
Inventor 何松
Owner MAANSHAN JUNJUN FOOD TECH
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