Production of bioflocculant using the effluent of a hydrogen-producing bioreactor and its capacity of wastewater treatment
(0) In this study, compound bioflocculant-producing bacteria, named F2-F6, were adopted as bioflocculant (BF) producer. In order to domesticate the strains of F2-F6 to utilize the effluent from a hydrogen-producing bioreactor as the only carbon resource, a method of poor-rich alternative nutrition was developed. After acclimation, the optimum fermentation conditions were investigated using only the effluent as culture substrate. The optimum fermentation conditions were to be initial pH of 7.0, fermentation time of 21 h, rotation speed of 140 rpm, temperature of 30 ℃ and no sterilization of the culture. Under these conditions, the maximum flocculation rate of the BF produced was over 93.0％. The weight-average molecular weight of BF was more than 106 Da according to the result of molecular exclusion chromatography. It was also found that the bioflocculant has high capacity of turbidity-removal, colorremoval and organic-removal up to 98.7％, 90.3％ and 62.6％ respectively when it was used to treat domestic wastewater, black ink wastewater and Chinese medicine wastewater.
bioflocculant-producing bacteria bioflocculant bioflocculant production bio-hydrogen effluent wastewater treatment
Shuangshi Dong Nanqi Ren Aijie Wang Fang Ma Dandan Zhou
School of Municipal and Environmental Engineering, Harbin Institute of Technology Harbin, China School of Water Resource and Environment, China University of Geosciences Beijing, China
国际会议
上海
英文
3640-3644
2008-05-16（万方平台首次上网日期，不代表论文的发表时间）