Experimental and Numerical Comparison of Dispersion and Sorption of Cr(VI) on Maize Cane Biomass

IF 16.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
M. J. Marín-Allende, E. Romero-Guzmán, C. E. Alvarado-Rodríguez, L. R. Reyes-Gutiérrez
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引用次数: 0

Abstract

Abstract. Computational and theoretical modelling has become an important tool for the characterization, development, and validation of packed beds. Relevant breakthrough curves would provide much valuable information on designing a fixed bed adsorption process in field applications. In this study, the hydrodynamic properties involved in the Navier–Stokes flow equation, such as velocity, pressure, and permeability, in a packed bed were investigated. Experiments in natural porous media such as maize cane biomass for determining the sorption of Cr(VI) are compared with numerical simulations. The relevant ordinary partial equations were solved in COMSOL Multiphysics Software friendly and efficiently. The close agreement between the experimental and numerical results suggests that the theoretical model of advection-hydrodynamic dispersion can be used to model the transport of Cr(VI) in unsaturated porous media composed of maize cane biomass. Resumen. El modelado computacional y teórico se ha convertido en una herramienta importante para la caracterización, desarrollo y validación de lechos empacados. Las curvas de avance relevantes proporcionarían información muy valiosa sobre el diseño de un proceso de adsorción de lecho fijo en aplicaciones de campo. En este estudio, se investigaron las propiedades hidrodinámicas involucradas en la ecuación de flujo de Navier-Stokes, como la velocidad, la presión y la permeabilidad, en un lecho empacado. Los experimentos en medios porosos naturales como la biomasa de caña de maíz para determinar la sorción de Cr(VI) se comparan con simulaciones numéricas. Las ecuaciones parciales ordinarias relevantes se resolvieron en COMSOL Multiphysics Software de manera amigable y eficiente. La estrecha concordancia entre los resultados experimentales y numéricos sugiere que el modelo teórico de dispersión hidrodinámica por advección puede usarse para modelar el transporte de Cr(VI) en medios porosos no saturados compuesta por biomasa de caña de maíz.
玉米蔗生物质对六价铬的分散和吸附的实验与数值比较
摘要计算和理论建模已成为表征、开发和验证填料床的重要工具。相关的突破曲线将为设计现场应用中的固定床吸附过程提供许多有价值的信息。本研究对填料床中 Navier-Stokes 流动方程所涉及的流体动力学特性(如速度、压力和渗透性)进行了研究。在玉米甘蔗生物质等天然多孔介质中测定六价铬吸附量的实验与数值模拟进行了比较。相关的常局部方程在 COMSOL Multiphysics 软件中进行了友好而高效的求解。实验结果与数值结果之间的密切吻合表明,平流-流体动力分散理论模型可用于模拟六价铬在由玉米蔗生物质构成的非饱和多孔介质中的迁移。计算和理论建模已成为填料床表征、开发和验证的重要工具。相关的突破曲线将为现场应用中固定床吸附过程的设计提供有价值的信息。本研究对填料床中 Navier-Stokes 流动方程所涉及的流体动力学特性(如速度、压力和渗透性)进行了研究。在玉米甘蔗生物质等天然多孔介质中测定六价铬吸附量的实验与数值模拟进行了比较。相关的常偏方程在 COMSOL Multiphysics 软件中以用户友好和高效的方式求解。实验结果与数值结果之间的密切吻合表明,理论平流流体动力扩散模型可用于模拟六价铬在由玉米甘蔗生物质构成的非饱和多孔介质中的迁移。
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来源期刊
Accounts of Chemical Research
Accounts of Chemical Research 化学-化学综合
CiteScore
31.40
自引率
1.10%
发文量
312
审稿时长
2 months
期刊介绍: Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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