1. 热提取法提取LB-EPS和TB-EPS • 目的: ◦ 分离不同结合状态的EPS:EPS是微生物分泌的胞外聚合物,主要由蛋白质、多糖、核酸和腐殖酸等有机物质组成。EPS在污泥中以不同的结合状态存在,分为松散结合EPS(LB-EPS)和紧密结合EPS(TB-EPS)。LB-EPS通常位于细胞表面,较为松散,容易释放;而TB-EPS则与细胞结...
膜污染滤饼层采用复合式膜生物反应器 (HMBR) 处理生活污水进行中试, 研究了污泥龄 (SRT) 对松散附着性胞外聚合物 (LB-EPS) 及膜污染的影响.结果表明, SRT对LB-EPS,ζ电位以及活性污泥的絮凝与沉淀性能均有重要影响.在4种SRT (10,20,30,60 d) 中, 当SRT为20 d时的LB-EPS含量最低,ζ电位最高,活性...
The electrophoretic mobilities and hydrodynamic diameters of the intact and LB-EPS free bacteria were statistically unchanged (P>0.05), indicating LB-EPS had no influence on the net surface charges and size distribution of bacteria. However, LB-ESP could enhance cell aggregation processes. The four...
The article reports on the two-cent per pound (lb) decline in the prices of expandable polystyrene (EPS) spot in the U.S. for March 2013. It says that producers have been able to keep prices steady for February due to the flat styrene prices and little competition. It adds that produce...
However in the presence of Ca2+, LB-EPS also acts as a nucleation site for precipitation “marl” deposition which reduces Cu2+ adsorption. Bio-lithification layer formation in combination with high calcium bio-adsorption levels significantly reduced, but did not eliminate, copper adsorption in ...
US spot EPS prices gain 3 cents/lb European Chemical News, with Performance Chemicals EuropeKLUMP, MICHELLE
结合态EPS内层(TB-EPS)3) extracellular polymeric substances(EPS) 胞外聚合物(EPS) 1. Soluble microbial products(SMP) ,particle size distributions(PSD) of flocs,extracellular polymeric substances(EPS) and molecular weight(MW) distributions of SMP were periodically monitored. 采用膜生物反应器(MBR)运...
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