Heavy metal adsorbent and preparation method and application thereof

A heavy metal and adsorbent technology, applied in chemical instruments and methods, adsorbed water/sewage treatment, special forms of dry distillation, etc., can solve problems such as limited treatment effect
CN106082385AInactive Publication Date: 2016-11-09SHENZHEN TECHAND ECOLOGY & ENVIRONMENT CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHENZHEN TECHAND ECOLOGY & ENVIRONMENT CO LTD
Publication Date
2016-11-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a heavy metal adsorbent and a preparation method and application thereof. The heavy metal adsorbent is biological charcoal obtained by air-drying and pyrolyzing cruciferous plants in a grinding mode, wherein the cruciferous plants comprise leaf mustards, radishes, oilseed rape, Chinese cabbages, cabbages, shepherd's purse, wild cabbages and the like. Through tests, it is found that the cruciferous plants contain more sulfhydryl compounds, and the biological charcoal with a sulfydryl group can be obtained after the sulfhydryl compounds are pyrolyzed, can generate adsorbing and chelating effects with heavy metal ions and has the high affinity with positive ions of heavy metals such as Cd, Cu, Mn, Ni and Zn; the waste cruciferous plant bodies such as the Chinese cabbages and the leaf mustards are collected to be air-dried and pyrolyzed to prepare the biological charcoal, therefore, the discharge amount of garbage can be decreased, reutilization of waste resources is achieved, the high heavy metal adsorption capacity is achieved, and wide application prospects in heavy metal-containing water body treatment, heavy metal-contaminated soil remediation and permeable reactive barrier packing are achieved.
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Description

technical field

[0001] The invention relates to the technical field of heavy metal pollution control, in particular to a heavy metal adsorbent, its preparation method and application. Background technique

[0002] Biochar refers to the high-temperature treatment of biomass under anoxic conditions. The oil and gas in the biomass are burned or collected after separation, and the remaining solid matter is mainly biochar. Preparation of waste biomass resources into biochar by carbonization technology for development and utilization can solve complex problems such as sustainable development and environmental protection to a large extent, and is of great significance for ensuring national environmental security and sustainable use of resources. Biochar is an insoluble and stable black solid substance with dense microporous structure and huge specific surface area, which can effectively adsorb and stabilize inorganic ions and organic compounds, and can be used in soil improvement, ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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