Modeling and Process Design of Intraparticle Adsorption in Single-Stage and Multistage Continuous Stirred Reactors: An Analytical Kinetics Approach

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• 作者：Mohammad Outokesh ; Ali Naderi ; Ali Reza Khanchi ; Javad Karimi Sabet
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2014
• 出版时间：January 8, 2014
• 年：2014
• 卷：53
• 期：1
• 页码：305-315
• 全文大小：484K
• ISSN：1520-5045

文摘

Continuous adsorption in stirred reactors in the form of carbon in pulp (CIP) and resin in pulp (RIP) is an established process for the extraction of gold and uranium. Under the circumstance of intraparticle diffusion resistance, CIP and RIP have been accurately modeled by the Boyd鈥檚 series (reversible adsorption) and shrinking core model (irreversible adsorption). The present study, in its first part, introduces an analytical formula that most closely approximates both models. Using such formula, the study addresses a basic algorithm for optimization of single-stage continuous adsorption systems through linking of the major process variables. Furthermore, this study is devoted to developing an 鈥渁nalytical kinetics approach鈥?for the design of multistage CIP and RIP processes via application of Glauekauf鈥檚 multiple series. Advantages of the new approach over the McCabe鈥揟hiele 鈥淓quilibrium Approach鈥?are (1) the incorporation of the kinetics and equilibrium into one unified model, and (2) accurate determination of the number of stages, reactor size, and optimum operational conditions.