培地循環式充填層型バイオリアクターにおける鉄酸化細菌による黄鉄鉱の脱硫に及ぼす生成物阻害 Product Inhibition of Desulfurization from Pyrite by Thiobacillus ferrooxidans in Packed-Bed Medium-Recirculating Bioreactor
Desulfurization from pyrite by Thiobacillus ferrooxidans in a packed-bed medium -recirculatingbioreactor is examined. The concentrations of SO<SUB>4</SUB><SUP>2-</SUP> and Fe<SUP>3+</SUP> elutedfrom the pyrite in the bioreactor increased with time, however, those became constant after a certain culture time. The higher concentrations of eluted products appearts inhibit is desulfurization by the bacteria. Inhibition of Fe<SUP>3+</SUP> to the desulfurization process is higher than that of SO<SUP>2-</SUP><SUB>4</SUB>. Periodical exchange production in the medium with fresh medium in the bioreactor eliminates inhibition, which results in restart of the desulfurization process.
化学工学論文集 23(4), 597-600, 1997-07-10
The Society of Chemical Engineers, Japan