Fast polybrominated biphenyl ether degrading method with nanometer iron powder

A polybrominated diphenyl ether and nano iron powder technology, which is applied in the direction of protection devices against harmful chemical agents and the like
CN1739822AInactive Publication Date: 2006-03-01RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
Publication Date
2006-03-01
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention is fast polybrominated biphenyl ether degrading method with nanometer iron powder. Polybrominated biphenyl ether mixture in the concentration of 1 microgram / ml is added with nanometer iron powder in the concentration of 0.2-0.3 g / ml to react for 5 min to 10 days at normal temperature and normal pressure, so as to debrominate and produce low brominated biphenyl ether. The nanometer iron powder with great specific surface area results in fast adsorption and fast degradation of polybrominated biphenyl ether and greatly shortened reaction time. The present invention has excellent application foreground in degrading chlorinated and brominated biphenyl ether and eliminating corresponding pollution.
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Description

technical field

[0001] The invention relates to a method for degrading polybrominated diphenyl ethers. Background technique

[0002] As we all know, polybrominated diphenyl ethers are widely used as flame retardants in textiles, plastics and electronic products. In 1999, the total production of various PBDEs had exceeded 60,000 tons. They are stable to acids and bases, are not readily biodegradable, and are considered persistent organic pollutants, like PCBs. Due to their mass production and use, they have been detected in high concentrations in a variety of environmental samples, and the levels of PBDEs in human blood have increased 100-fold since 1979. Because of their possible environmental endocrine disruptor properties and neurotoxicity, their degradation and elimination work has begun to attract attention, but the research in this area has not yet been fully developed. Existing reports on the degradation of PBDE are very limited, and the literature on this aspect ca...

Claims

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