Complex acidophilic microbial agent as well as preparation method and application thereof in treating waste copper-clad plate flotation residue

A composite bacterial agent and microorganism technology, which can be applied in the direction of bacteria and process efficiency improvement, etc., can solve the problems of harmless and efficient treatment of unfavorable solid waste.

Active Publication Date: 2015-12-09
CENT SOUTH UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, the biological extraction method to treat solid wastes such as waste printed circuit boards, waste batteries, and urban sludge mainly focuses on acidophilic Thiobacillus ferrooxidans or acidophilic Thiobacillus sulfuroxidans cultivated at room temperature, such as Chinese patent documents CN102560114A and CN102363890A etc., thus the obtained strains and their community structures and functions are relatively simple, which is not conducive to the efficient and harmless treatment of solid waste in high or low temperature environments

Method used

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  • Complex acidophilic microbial agent as well as preparation method and application thereof in treating waste copper-clad plate flotation residue
  • Complex acidophilic microbial agent as well as preparation method and application thereof in treating waste copper-clad plate flotation residue
  • Complex acidophilic microbial agent as well as preparation method and application thereof in treating waste copper-clad plate flotation residue

Examples

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Effect test

Embodiment 1

[0054] An acidophilic microbial complex bacterial agent for efficiently leaching metallic copper in waste copper-clad slag of the present invention, the community composition of the acidophilic microbial complex bacterial agent includes thermoacidophilic ferrobacteria strains and Leptohelicoferrobacterium strains , acidophilus sulfobacillus strains, psychroacidophilic iron-oxidizing bacteria strains and acidophilic sulfobacillus ferrooxidans strains.

[0055] In the above-mentioned acidophilic microbial compound bacterial agent of the present embodiment, the specifically selected ferroacidophilic ferrobacterium strain is the ferroacidophilic ferrobacterium CS32 (Ferroplasmathermophilum CS32) with the preservation number CCTCCM2015014, which was published on January 5, 2015. Preserved in China Center for Type Culture Collection; the selected strain of Leptospira ferriphilum CS54 (Leptospirillum ferriphilum CS54) with the preservation number CCTCCM2015015 was deposited in China T...

Embodiment 2

[0065] The valuable metal copper in the waste copper-clad laminate slag was extracted by the acidophilic microbial compound bacterial agent in the above-mentioned Example 1. The waste copper-clad laminate slag used in this example mainly comes from waste clad laminates piled up in the field for a long time in a waste copper-clad laminate treatment plant in Guangdong. Copper slag. The waste copper clad laminate slag is the residue produced after a series of technical processes such as dismantling, crushing, and shaking table sorting. The residue has been piled up in the field for a long time without any treatment. The metal element content of the residue was analyzed by ICP and pointed out: Cu0.75% and Fe1.87%.

[0066] The specific operation process of using the above-mentioned acidophilic microbial compound bacteria agent to extract valuable metal copper in waste copper clad slag includes:

[0067] Mix the acidophilic microorganism composite bacterial agent obtained above wi...

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Abstract

The invention discloses a complex acidophilic microbial agent, wherein the colony consists of five strains, namely ferroplasma thermophilum, leptospirillum ferriphilum, sulfobacillus thermosulfidooxidans, acidithiobacillus ferrivorans, acidithiobacillus ferroxidans and the like. The preparation method of the complex microbial agent sequentially comprises steps of proportional compounding of microbial agent, temperature gradient complex culture, waste copper-clad plate residue tolerance domestication and the like; and by virtue of the complex acidophilic microbial agent disclosed by the invention, valuable metallic copper in high-grade or low-grade waste copper-clad plate residue can be leached, which can be specifically achieved by an operating process as follows: mixing the complex microbial agent with waste copper-clad plate residue and iron-containing basic salt / nutrient medium so as to obtain mixed slurry; and continuously stirring and leaching at room temperature until a leaching operation is completed, and meanwhile ventilating in the bottom. The complex microbial agent and the application thereof disclosed by the invention have the advantages of being simple in formula, good in economical efficiency, strong in adaptability, efficient and the like.

Description

technical field [0001] The invention belongs to the technical field of harmless biological treatment of solid waste in the field of environmental protection, and in particular relates to a microbial agent which can be used for the harmless treatment of waste copper clad slag and an application method thereof. Background technique [0002] According to statistics from CCL Materials Branch of China Electronic Materials Industry Association and Prismark, the CCL industry has become an Asian industry, especially in China. In 2005, my country's total copper clad laminate manufacturing has exceeded 200 million m 2 , has been ranked first in the world ever since. By 2010, my country's total copper clad laminate manufacturing has reached 399 million m 2 , accounting for about 80% of the world's total copper clad laminate manufacturing. However, according to the calculation of about 20% material scrap rate in the process of manufacturing and processing copper clad laminates into p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12N1/20C22B3/18C22B15/00
CPCY02P10/20
Inventor 周洪波刘晓文仉丽娟陈岩贽周文博王炜康鑫温勇
Owner CENT SOUTH UNIV
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