Coal desulfurization using bacteria adaptation and bacterial mod

Details Coal desulfurization using bacteria adaptation and bacterial mod Coal desulfurization using bacteria adaptation and bacterial mod

1986-04-22

1988-10-04

Rosen, Sam

Chemistry: molecular biology and microbiology

Process of utilizing an enzyme or micro-organism to destroy...

Destruction of hazardous or toxic waste

435267, 435282, C12P 104

Patent

active

047756276

ABSTRACT:
The invention relates to the desulfurization of high sulfur coal, and specifically to the removal of pyrite from high sulfur coal via separation processes based on relative hydrophobicity. The surfaces of the pyrite particles are modified so as to be more hydrophilic by pre-conditioning of the coal with a culture of thiophilic bacteria such as Thiobacillus ferroxidans, and the coal is then subjected to the separation process. The bacterial culture is preadapted to pyrite and to the pyrite surface modification step conditions for a period of several weeks which allows the commercial preconditioning step to be accomplished in less than one hour and typically in five to fifteen minutes.

REFERENCES:
patent: 4206288 (1980-06-01), Detz et al.
patent: 4456688 (1984-06-01), Dugan et al.
patent: 4552652 (1985-11-01), Attia et al.
Kempton et al.--Chem. Abst., vol. 92 (1980) p. 200695p.
Dutkiewicz et al.--Chem. Abst., vol. 90 (1979) p. 57612p.
Recent Progress in Biohydrometallurgy, Rossi and Torma, 1983.

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