Method for producing heavy metal absorbent through microbiological treatment on lignite and related compound microbial agent

Abstract

The invention discloses a method for producing a heavy metal absorbent through microbiological treatment on lignite and a related compound microbial agent, relating to a method for preparing the heavy metal absorbent through the microbiological treatment. The compound microbial agent is composed of fermentation liquor of beauveria bassiana, bacillus subtilis and candida tropicalis. The compound microbial agent can react with various groups in the lignite, so that the capacity of the lignite for adsorbing heavy metal ions is further promoted, and the synergy of the three microbial strains is superior to the effect of any one microbial strain and the effect of any two microbial strains.

Description

technical field

[0001] The invention belongs to the field of resource utilization of lignite, and relates to a method for microbially treating lignite to produce a heavy metal adsorbent and a composite microbial bacterial agent involved. Background technique

[0002] Lignite is the initial product of peat deposition and dehydration and compaction into organic biorock. The degree of aromatic nuclei condensation of humic acid in lignite is higher, the oxygen-containing functional groups are reduced, and the side chains are shorter and less in number. The phenolic hydroxyl group, carboxyl group, ether bond and carbonyl group contained in the polycyclic aromatic structure of lignite polycondensation are easy to dissociate, have hydrophilic properties, and can interact with metal ions through complexation or ion exchange. It is a good metal ion adsorption material . Regarding the use of lignite as an adsorbent to treat metal ions such as Cr in water 6+ 、Cu 2+ , Pb 2+ etc. Th...

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