Mixed microbial fermentation of carbonaceous matter to road de-i

Chemistry: molecular biology and microbiology – Micro-organism – tissue cell culture or enzyme using process... – Preparing oxygen-containing organic compound

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435 42, 435136, 435801, 435842, C12P 754, C12P 740, C12P 3900, C12R 1145

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active

046364676

ABSTRACT:
A process for production of mixed calcium-magnesium organic acid salts useful for de-icing obtained by anaerobic hydrolysis-fermentation of organic carbonaceous solids by a biologically active mixture of hydrolysis-fermentation anaerobes in which the growth of methanogenic bacteria is suppressed and calcium-magnesium oxygen containing compound is added to the anaerobic digester to control pH and to react with the fermentation acid products to form a mixture of calcium-magnesium organic acid salts. The calcium-magnesium organic acid salts may be readily recovered in solid form for economical utilization in roadway de-icing. The anaerobic digestion is conducted under a naturally obtained mixed microbial population in the presence of the calcium-magnesium oxide containing compound, eliminating the need for pure microbiological strains and sterilization or pasteurization of feed materials.

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Marynowski et al, 1983, Process Development for Production of Calcium Magnesium Acetate, U.S. Dept. of Transportation, Federal Highway Administration Report No. FHWA/RD-82/145.

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