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The use of a caragana biochar and its process of mediating anaerobic reduction dechlorination of pentachlorophenol

A technology of pentachlorophenol and biochar, applied in the new use of caragana biochar, in the field of pentachlorophenol anaerobic reduction and dechlorination, can solve the problems of limitation, cumbersome extraction method, long time consumption and the like

Active Publication Date: 2018-09-11
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the extraction method of humin is very cumbersome and time-consuming, and each extraction and purification takes one to two months
Also, the electronic mediation effects of humin are often limited by soil or sediment sources

Method used

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  • The use of a caragana biochar and its process of mediating anaerobic reduction dechlorination of pentachlorophenol
  • The use of a caragana biochar and its process of mediating anaerobic reduction dechlorination of pentachlorophenol

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preparation example Construction

[0032] The preparation method of caragana biochar of the present invention is: cut caragana into 5-10cm long branches, in a carbonization furnace, under anaerobic conditions, carbonize for 4-6h at a temperature of 400-500°C, take out, mechanically crush, grind , you can get Caragana biochar.

[0033] A new application of Caragana biochar, the use of Caragana biochar as a solid electronic mediator for anaerobic reduction dechlorination of pentachlorophenol.

Embodiment 1

[0035] A process for caragana biochar-mediated anaerobic reduction dechlorination of pentachlorophenol, in which pentachlorophenol (PCP) is placed in Caragana biochar degradation system (generally degradable PCP is added to the degradation system with a final concentration of 20- 50 μmol / L), cultured in the dark at 30±1°C for more than 10 days. Caragana biochar degradation system is prepared by mixing the following components: inorganic salt medium 1L, anaerobic microorganism 0.5mg, sodium formate 0.6g, vitamin solution 1mL, Caragana biochar 4g.

[0036] In terms of mass percentage, the anaerobic microorganisms are made by mixing the following strains: 38% of Sulfuromonas, 32% of Bacteroides, 20% of Clostridium bienzyme, 4% of Dehalogenobacillus, and 6% of Desulfovibrio .

[0037] The composition of the inorganic salt medium is: NH 4 Cl 1.0g / L, CaCl 2 2H 2 O 0.05g / L, MgCl 2 ·6H 2 O 0.1g / L, K 2 HPO 4 0.4g / L, SL-10 trace element solution 1mL / L, Se / W solution 1mL / L, pH7....

Embodiment 2

[0042] A process for caragana biochar-mediated anaerobic reduction dechlorination of pentachlorophenol, in which pentachlorophenol (PCP) is placed in Caragana biochar degradation system and cultivated in a dark environment at 30±1°C for more than 10 days. The Caragana biochar degradation system is prepared by mixing the following components: 1L of inorganic salt medium, 1mg of anaerobic microorganisms, 0.8g of sodium formate, 2mL of vitamin solution, and 6g of Caragana biochar.

[0043] In terms of mass percentage, the anaerobic microorganisms are made by mixing the following strains: 40% of Sulfuromonas, 31% of Bacteroides, 19% of Clostridium bienzyme, 6% of Dehalogenobacillus, and 4% of Desulfovibrio .

[0044] Others are with embodiment 1.

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Abstract

The invention discloses a new application of caragana microphylla charcoal and a mediate chlorophenasic acid anaerobic reductive dechlorination process thereof. The caragana microphylla charcoal serves as a solid electronic medium for mediate chlorophenasic acid anaerobic reductive dechlorination. The caragana microphylla charcoal serves as the solid electronic medium, so that biological anaerobic reductive dechlorination of chlorophenasic acid is promoted; and the caragana microphylla charcoal is naturally made, is environment-friendly and widely exists in the natural environment.

Description

technical field [0001] The invention relates to the field of organic matter biodegradation, in particular to a new application of caragana biochar and a process for mediating anaerobic reduction dechlorination of pentachlorophenol. Background technique [0002] Halogenated aromatic compounds and their derivatives are chemical raw materials, organic synthesis intermediates and organic solvents widely used in chemical industry, medicine, leather, electronics and other industries. Because of its extensive pollution, high toxicity, difficult to degrade, and most of them will cause teratogenic, carcinogenic, and mutagenic effects on the human body, it has attracted widespread attention. Among them, Pentachlorophenol (PCP) is a typical halogenated aromatic compound, which has been widely used as an insecticide, wood preservative, and fungicide, causing worldwide soil and groundwater pollution. Because PCP poses serious threats to human health (high toxicity to the liver and kidne...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A62D3/02A62D101/22A62D101/28
CPCA62D3/02A62D2101/22A62D2101/28
Inventor 章春芳杨生茂钟哲科刘玉学李智灵张冬冬吕豪豪汪玉瑛张宁
Owner ZHEJIANG UNIV
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