Abstract:The conditions of cultivating Aspergillus sojae and Pichia membranifaciens in soy sauce waste to produce bio-flocculants and the flocculation characteristics of the bio-flocculants have been studied. The effects of additional carbon source, additional nitrogen source, initial pH of culture medium and the concentration of soy sauce waste on the yield of bio-flocculants were tested for cultivation conditions optimization. Ethanol (5g/L) was added into soy sauce waste which was diluted 1 time, as complementary carbon source without additional nitrogen source, the pH and cultivation time were 5.0 and 30h respectively. The yield of bio-flocculants was up to 5.92g/L. Bio-flocculants made in experiment has good effect on the water treatment, the removal ratio of kaolin clay suspension was up to 98.3%, other wastewater such as soy sauce waste, liquor brewing waste, the removal ratio of turbidity and COD was 78.2%~92.3% and 64.2%~85.2% respectively.
任宏洋, 王新惠, 刘达玉. 复合菌利用酱油废液制备生物絮凝剂及其絮凝特性分析[J]. 中国环境科学, 2010, 30(8): 1050-1055.
REN Hong-Yang, WANG Xin-Hui, LIU Da-Yu. Production and properties of bio-flocculant by Aspergillus sojae and Pichia membranifaciens cultured in soy sauce waste. CHINA ENVIRONMENTAL SCIENCECE, 2010, 30(8): 1050-1055.