文献类型：期刊文献

英文题名：Kinetics and thermodynamics of paralytic shellfish poisoning adsorption on chitosan

作者：Xie, Wancui[1]; Liu, Xiaoli[2]; Yang, Xihong[1]; Bian, Zhongyuan[1]; Zhang, Chaohua[1]

机构：[1] Key Laboratory of Advanced Processing of Aquatic Products of Guangdong Higher Education Institution, College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China; [2] State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214036, China

年份：2013

卷号：7

期号：2

起止页码：233

外文期刊名：Journal of Biobased Materials and Bioenergy

收录：EI(收录号：20132316404613)、Scopus(收录号：2-s2.0-84878521649)

语种：英文

外文关键词：Gibbs free energy - Kinetic theory - Kinetic parameters - Shellfish - Chitosan - Free energy

外文摘要：Paralytic shellfish poisoning (PSP) of Alexandrium catenella was cultured in the laboratory, and the adsorption of PSP onto chitosan (CTS) was investigated. The optimum adsorption conditions were as follows: pH 3.5, contact time 90 min, temperature 40°C, and volume of CTS 3.5 mL (2%). Kinetic data were tested using pseudo-first-order and pseudo-second-order kinetic models. The data correlated well with the pseudo-second-order kinetic model, indicating that chemical sorption was the rate-limiting step. The best interpretation for the thermodynamic experimental data was explained by the Freundlich isotherm model. Thermodynamic parameters, including Gibbs free energy (G), enthalpy (H, and entropy (S), were evaluated by applying the Van't Hoff quation. Results of G 0, and S > 0. Results indicated that adsorption was both feasible and spontaneous, and that endothermic adsorption can be processed in nature. Copyright ? 2013 American Scientific Publishers.