Study on Mathematic Model of Extraction of Extracellular Polymeric Substances Using a Cation Exchange Resin
The mechanism about extraction of extracellular polymeric substances (EPS) using a cation exchange resin was analyzed and the relationship between the extraction amount and the resin dosage, extraction time, stirring intensity, initial activated sludge concentration were described by the mathematic model: Y=1000a(1-exp(-BACKt)) in this paper. By Origin soft ware (version 7.0) analyzing, theoretical value and experimental value had no significant difference at the degree of confidence 95％. The constants a=14.7％ and K=1.45×10-5 mL/(mg·rpm·h) were obtained by fitting the regression equation. The constant (a) could indicated that the theoretical content of EPS was approximately equal to 15％ of the sludge dry weight. Considering experiment condition, the amount of extracted EPS could exceed 90％ of the theoretical content based on the model.
mathematic model cation exchange resin EPS
CUI Chongwei LI Shaofeng
School of Municipal & Environmental Engineering, Harbin Institute of Technology, Harbin 150001, Heil Department of Architecture Engineering, Shenzhen Polytechnic Institute, Shenzhen 518055, Guangdong,
国际会议
2007环境科学与技术国际会议(The 2007 International Symposium on Environmental Science and Technology)
北京
英文
2007-11-13（万方平台首次上网日期，不代表论文的发表时间）