Development of a first-order kinetics-based model for the adsorption of nickel onto peat

作     者：LIU Zhi-rong CHEN Xiao-song ZHOU Li-min WEI Peng 

作者机构：Department of Applied Chemistry East China University of Technology Fuzhou Jiangxi 344000 China 

出 版 物：《Mining Science and Technology》 (矿业科学技术（英文版）)

年 卷 期：2009年第19卷第2期

页      面：230-234页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 080202[工学-机械电子工程] 08[工学] 0817[工学-化学工程与技术] 0804[工学-仪器科学与技术] 0703[理学-化学] 0802[工学-机械工程] 

基　　金：Projects 331 supported by the Scientific Research Foundation for the Returned Overseas Chinese Scholars 070712 by the Key Laboratory ofNuclear Resources and Environment,Ministry of Education of China 

主　　题：peat nickel adsorption first-order rate model pH isotherm 

摘      要：The use of peat for the removal of nickel from aqueous solutions has been investigated at various pH values by means of static conditions. The present research shows that the ability of Ni to bind to peat increases as the pH value increases. The solutions reach adsorption equilibrium rapidly. A reasonable kinetic model, first-order in nickel concentration, has been developed and fitted to the adsorption of nickel （Ⅱ） onto peat. The first-order model provides a good correlation to the experimental data. The characteristic parameters of the Langmuir isotherm were determined at various temperatures. The relationship between kinetics and equilibrium isotherms was established through the forward- and backward-rate-constants, k~ and k2, and the equilibrium constant, K.