Hydrogel material capable of removing arsenic

A hydrogel, water body technology, applied in water/sewage treatment, adsorption water/sewage treatment, water/sludge/sewage treatment, etc. Capacity limitations, etc.

Inactive Publication Date: 2014-01-01
INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The conditions for the preparation of arsenic-removing materials by the above methods are complicated, and the arsenic-removing ability also has certain limitations, which makes it difficult to meet the needs of its wide application

Method used

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  • Hydrogel material capable of removing arsenic
  • Hydrogel material capable of removing arsenic
  • Hydrogel material capable of removing arsenic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] figure 1 It is the SEM experiment result of the dry glue material prepared by this method, which has a layered structure with a micron level scale, and these layered structures are composed of many micron-scale fibers, indicating that the prepared gel has better stability; figure 2 It is the result graph of the adsorption capacity of the dry rubber material prepared by this method to different As(V) contents (50ppb, 100ppb, 200ppb, 500ppb and 1000ppb), and the results show that the dry rubber material has good adsorption to 50ppb As(V), As(V) removal rate reaches about 63%; image 3 The experimental results of the adsorption capacity of As(V) (50ppb) in different amounts (1mg, 3mg, 5mg, 10mg, 20mg, 30mg and 40mg) of the dry glue material prepared by this method show that the dry glue material above 5 mg It has a high removal ability for As(V) (50ppb).

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Abstract

The invention discloses a hydrogel material capable of removing arsenic. A simple ammonia gas volatilization way and a simple cross-linking method are utilized to introduce Fe <3+> into a chitosan type hydrogel system, so that the hydrogel material which is doped with Fe3O4 and good in mechanical performance is obtained. The prepared hydrogel material has a network three-dimensional structure and very strong removal capability for an important environmental pollutant inorganic arsenic (+5 valence); a natural high polymer material is used, so that material cost for preparing the hydrogel material is low, and therefore, the hydrogel material is an environment-friendly and efficient arsenic-removing material.

Description

technical field [0001] The invention relates to a preparation method of a material for removing arsenic from a water body. The invention particularly relates to an environment-friendly hydrogel type water body arsenic removal material. Background technique [0002] Arsenic (As) is a recognized carcinogen that can induce mutations in the morphology and structure of biological cells (G. Beckman, L. Beckman and I. Nordenson, Environmental Health Perspectives, 1977, 19, 145? 146), long-term drinking High-arsenic water can cause skin diseases such as flowering skin disease or skin keratinization, blackfoot disease, neuropathy and vascular injury and other diseases. With the rapid development of the global economy and society, activities such as coal mining, smelting, chemical production and unreasonable use of groundwater have intensified, causing a large amount of arsenic-containing substances to enter surface water bodies, and then accumulate into the human body through drinki...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/28C02F1/28C02F1/62
Inventor 沈江珊张洪武杨溢
Owner INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI
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