Cadmium solidified bacterial organism adsorbents and preparation method thereof

A technology of biosorbents and bacteria, applied in biochemical equipment and methods, methods based on microorganisms, chemical instruments and methods, etc., can solve problems such as complex processes, secondary pollution, and high costs
CN101037682AInactive Publication Date: 2007-09-19RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
Publication Date
2007-09-19
Estimated Expiration
Not applicable · inactive patent
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Abstract

The invention relates to a fixed bacteria biosorption of Cd and preparing method thereof, also relates to a biosorption made from a special bacteria processed by chemical agent embedding and preparing method thereof, the bacteria is bacillus cereus, the chemical agent is 2.5% of sodium alginate solution, suiting for processing waste water containing heavy metal Cd, which absorption efficiency of Cd is more than 50%.
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Description

technical field

[0001] The invention relates to a heavy metal cadmium immobilized bacterial biosorbent and a preparation method thereof. The bacteria is Bacillus cereus. The biosorbent is used to treat cadmium-containing wastewater. Background technique

[0002] The heavy metal cadmium has strong biological toxicity, and its chemical properties are similar to zinc. In various biochemical processes, cadmium replaces enzyme-bound metals by binding and replacing enzyme sulfhydryl groups, reducing the body's antioxidant activity and causing oxidative damage; cadmium Cadmium can occupy calcium ion channels to enter cells and interfere with cellular calcium metabolism; cadmium can also cause DNA breaks, damage DNA repair systems, and cause cell apoptosis. Cadmium has a half-life of up to 3,000 years, making it the most toxic substance that accumulates in the human body. In 1974, the United Nations Environment Program designated it as a key pollutant.

[0003] Heavy metal cadmi...

Claims

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