In this study, a strain which had the highest flocculating activity was screened from soil, and named XMX-1 (the bioflocculant produced by XMX-1 named XMX-1F). The research showed that, the cornstarch and the corn steep liquor were chosen as carbon and nitrogen source; the flocculating conditions were studied. 7.685 g/L XMX-1F raw product was obtain form the supernatant by using ethanol. The XMX-1F was mainly composed of polysaccharide, which is determined by Anthrone reaction, ultraviolet spectroscope method and Infrared spectra. The polysaccharide content was 77.87%, in addition XMX-1F was more thermostable when treated at 100℃ for 30 min. In the treatment of high SS waste water, including coal-washing waste water, soil suspension and activate carbon power suspension, XMX-1F showed high flocculating activity, but the capability of decolorizing was not obviously. Study on XMX-1F flocculating coal-washing wastewater indicated the actual application potential of XMX-1F.
PAN DuoTao; LIU GuiPing; LIU ChangEeng .
Screening of microbe producing flocculant and characteristics of microbial flocculant[J]. Journal of Beijing University of Chemical Technology, 2008, 35(1): 83-87
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