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This paper, 9 strains of bacillus producing capsule were isolated from soil by potassium shale medium. Glass fibers with similar structure of the ore were used as potassium sources. And the potassium degradation ability of the selected strain was analyzed by the weight loss method. The bacillus with the obvious degradation effect was screened out and named as X SC-6. According to the analysis of physiological characteristics and 16S drank sequence, the fungus was confirmed to be Bacillus mucilaginous. To optimize the degradation condition, the fermentation medium also discussed. The results showed that the potassium degradation effect of potassium shale medium was better than the other. Attractively, the K+ content in the supernatant was increased by 12.97% and the degradation rate reached 2.44%. In addition, scanning electronic microscope was used to measure the microstructure of the glass fiber before and after degradation. The results indicated that the bacteria had good ability to decompose the potassium. This work provides supporting theories for the degradation of solid wastes (such as glass fiber) by microorganism.

Screening and evaluation of the biodegradation of glass fiber by Bacillus mucilaginosus