A solidification and stabilization material for controlling arsenic pollution and its preparation method

A technology of arsenic pollution and mechanical activation, applied in the field of soil remediation, can solve the problems of low practicability, difficulty in production and application, and high price, and achieve the effect of simple manufacture, obvious stabilization effect, and low price
CN110508233BActive Publication Date: 2020-11-24INST OF GEOGRAPHICAL SCI & NATURAL RESOURCE RES CAS +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
INST OF GEOGRAPHICAL SCI & NATURAL RESOURCE RES CAS
Publication Date
2020-11-24

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Abstract

The invention discloses a curing stabilizing material for treating arsenic pollution, and a preparation method thereof, wherein the material comprises mechanically activated limonite obtained throughmechanical activation and having an average particle size of about 0.2 [mu]m. The preparation method comprises: 1, carrying out breaking or coarse grinding on a certain amount of natural limonite to obtain powdery limonite with relatively large granularity; 2, screening the powdery limonite to obtain fine powder limonite; and 3, placing the fine powder limonite into a ball mill, carrying out mechanical activation, and adding absolute ethyl alcohol as a dispersion medium during mechanical activation so as to obtain the mechanically activated limonite having an average particle size of about 0.2[mu]m.
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Description

technical field

[0001] The invention relates to a solidification and stabilization material for controlling arsenic pollution and a preparation method thereof, belonging to the technical field of soil remediation. Background technique

[0002] Arsenic (As) is a toxic non-metallic element, which is often used in the production of pesticides and alloys. It has carcinogenic, teratogenic, and mutagenic effects, and is widely present in soil and groundwater. It is currently one of the most common pollutants that pose the most serious hazards to public health. According to the official announcement of the World Health Organization, at least 50 million people in the world are facing the threat of endemic As poisoning, such as Bangladesh, China, the United States, India, Chile, Japan, Argentina, Canada, etc., including Asian countries including China As is the most serious threat.

[0003] The increase of soil As concentration will affect the normal function of the ecosystem and p...

Claims

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