Adsorption Mechanism of Composite Whisker on Copper Ions and Lead Ions
Adsorption Mechanism of Composite Whisker on Copper Ions and Lead Ions作者机构：College of Environment and Safety Engineering Qingdao University of Science and Technology Qingdao 266042 R R. China
出 版 物：《Chemical Research in Chinese Universities》 (高等学校化学研究（英文版）)
年 卷 期：2018年第34卷第5期
页 面：792-797页
核心收录：
学科分类：081702[工学-化学工艺] 081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 070301[理学-无机化学]
基 金：Supported by the National Natural Science Foundation of China(No.51308314)
主 题：Potassium tetratitanate whisker Chitin whisker Adsorption Mechanism
摘 要：A new kind of inorganic composite adsorbent based on chitin whiskers（CHW） and potassium tetratitanate whiskers（PTW） was synthesized via the thermal deposition to remove Cu2＋ and Pb2＋ from wastewater. CHW could be successfully coated on the surface of PTW when thermal treated 8 times. The adsorption process was better fitted with the Langmuir and Freundlich models. The adsorption process was more conformed to the Pseudo-second-order model. The results from XPS（X-ray photoelectron spectrum） further show that the adsorption mechanism between CHW-PTW and Cu2＋, Pb2＋ are both ion exchange and chemical adsorption. Thermodynamic parameters suggest that the adsorption processes are nonspontaneous. The adsorption of Cu2＋ and Pb2＋ is endothermic and exothermic, respectively.
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