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A kind of preparation method of fast and efficient adsorbent for heavy metal ions

A heavy metal ion and adsorbent technology, which is applied in the field of fast and efficient heavy metal ion adsorbent preparation, can solve the problems of slow adsorption rate and achieve the effect of fast adsorption speed and high heavy metal ion adsorption capacity

Inactive Publication Date: 2016-11-09
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, the above-mentioned adsorption materials for heavy metal ions are all based on organic materials, and the adsorption rate is relatively slow.

Method used

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  • A kind of preparation method of fast and efficient adsorbent for heavy metal ions
  • A kind of preparation method of fast and efficient adsorbent for heavy metal ions
  • A kind of preparation method of fast and efficient adsorbent for heavy metal ions

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Embodiment Construction

[0013] Technical scheme of the present invention is as follows:

[0014] A method for preparing a fast and efficient adsorbent for heavy metal ions, comprising the following steps:

[0015] (1) Preparation of chitosan-hectorite nano-dispersion system

[0016] Preparation of chitosan solution: dissolve chitosan in acrylic acid solution to obtain chitosan solution; the concentration of chitosan is 1-60g L -1 , the concentration of acrylic acid is 1~30g·L -1 ;

[0017] Preparation of laponite nano-dispersion system: disperse laponite in AMPS solution and stir for 12-96 hours to obtain laponite nano-dispersion system; the concentration of laponite is 0.5-40g L -1 , the concentration of AMPS is 5~100g·L -1 ;

[0018] Preparation of chitosan-hectorite nano-dispersion system: add chitosan solution into hectorite nano-dispersion system, stir for 15-120min to obtain chitosan-hectorite nano-dispersion system; chitosan solution and lithium The mass ratio of saponite nano-dispersion...

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Abstract

The invention relates to a method for preparing a rapid high-efficiency absorbent for heavy metal ions. The method comprises the following steps: dispersing 2-acrylamide-2-methyl propane sulfonate stabilized hectorite nano-particles in a solution of chitosan, acrylamide, acrylic acid and a cross-linking agent; and by taking potassium peroxodisulfate as an initiator, synthesizing an inorganic-organic nano composite gel type rapid high-efficiency absorbent. According to the method, the raw materials are cheap and readily available, the operation is simple, and aftertreatment is simple. Meanwhile, the gel belongs to an inorganic-organic nano composite material, is excellent in adsorptive property and rapid in adsorption and has application prospects in the field of environmental protection.

Description

technical field [0001] The invention relates to a preparation method of a fast and high-efficiency adsorbent for heavy metal ions, and belongs to the technical field of adsorption material synthesis. Background technique [0002] In recent decades, with the development of modern industry and the increase of human activities, a large amount of wastewater containing heavy metals has been produced. Heavy metal wastewater is considered to be the most serious environmental pollution and the most harmful industrial wastewater to humans. Heavy metals cannot be biodegraded into harmless substances, and the toxicity concentration of heavy metal ions is very low, generally between 1.0 and 10 mg / L. At the same time, many heavy metal ions can accumulate in organisms, resulting in serious long-term toxic consequences. Since industrial wastewater usually has the characteristics of low pH, containing various anions and cations, mostly containing oil latex and containing suspended particles...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/26B01J20/30C02F1/28C02F101/20
Inventor 曹杰孟令伟李子豪吕烜宇邱正松孙明波江琳张潇文
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)