Nagpal S, Chuichulcherm S, Livingston A, Peeva L
Department of Chemical Engineering and Chemical Technology, Imperial College, London, SW7 2BY, United Kingdom.
Biotechnol Bioeng. 2000 Dec 5;70(5):533-43.
A mixed culture of sulfate-reducing bacteria containing the species Desulfovibrio desulfuricans was used to study sulfate-reduction stoichiometry and kinetics using ethanol as the carbon source. Growth yield was lower, and kinetics were slower, for ethanol compared to lactate. Ethanol was converted into acetate and no significant carbon dioxide production was observed. A mathematical model for growth of sulfate-reducing bacteria on ethanol was developed, and simulations of the growth experiments on ethanol were carried out using the model. The pH variation due to sulfate reduction, and hydrogen sulfide production and removal by nitrogen sparging, were examined. The modeling study is distinct from earlier models for systems using sulfate-reducing bacteria in that it considers growth on ethanol, and analyzes pH variations due to the product-formation reactions.
使用含有脱硫脱硫弧菌的硫酸盐还原菌混合培养物，以乙醇作为碳源来研究硫酸盐还原的化学计量学和动力学。与乳酸相比，乙醇的生长产量较低，动力学较慢。乙醇被转化为乙酸盐，未观察到显著的二氧化碳产生。建立了硫酸盐还原菌在乙醇上生长的数学模型，并使用该模型对乙醇生长实验进行了模拟。研究了硫酸盐还原导致的pH变化，以及通过氮气鼓泡产生和去除硫化氢的情况。该建模研究与早期使用硫酸盐还原菌的系统模型不同，因为它考虑了在乙醇上的生长，并分析了产物形成反应导致的pH变化。
