Modeling of Ion Exchange Processes to Optimize Metal Removal from Complex Mine Water Matrices

The modeling of ion exchange processes could significantly enhance their applicability in mine water treatment, as the modern synthetic resins give unique advantages for the removal of metals. Accurate modeling improves the predictability of the process, minimizing the time and costs involved in lab...

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Autores principales:	Angela Isabel Pedregal Montes, Janith Abeywickrama, Nils Hoth, Marlies Grimmer, Carsten Drebenstedt
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	reactive transport modeling ion exchange resins mine water metal removal PhreeqC Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500
Acceso en línea:	https://doaj.org/article/d76a2c9e03c6432f909ee98937895c0f
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spelling	oai:doaj.org-article:d76a2c9e03c6432f909ee98937895c0f2021-11-11T19:57:32ZModeling of Ion Exchange Processes to Optimize Metal Removal from Complex Mine Water Matrices10.3390/w132131092073-4441https://doaj.org/article/d76a2c9e03c6432f909ee98937895c0f2021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4441/13/21/3109https://doaj.org/toc/2073-4441The modeling of ion exchange processes could significantly enhance their applicability in mine water treatment, as the modern synthetic resins give unique advantages for the removal of metals. Accurate modeling improves the predictability of the process, minimizing the time and costs involved in laboratory column testing. However, to date, the development and boundary conditions of such ion exchange systems with complex mine waters are rarely studied and poorly understood. A representative ion exchange model requires the definition of accurate parameters and coefficients. Therefore, theoretical coefficients estimated from natural exchange materials that are available in geochemical databases often need to be modified. A 1D reactive transport model was developed based on PhreeqC code, using three case scenarios of synthetic mine waters and varying the operating conditions. The first approach was defined with default exchange coefficients from the phreeqc.dat database to identify and study the main parameters and coefficients that govern the model: cation exchange capacity, exchange coefficients, and activity coefficients. Then, these values were adjusted through iterative calibration until a good approximation between experimental and simulation breakthrough curves was achieved. This study proposes a suitable methodology and challenges for modeling the removal of metals from complex mine waters using synthetic ion exchange resins.Angela Isabel Pedregal MontesJanith AbeywickramaNils HothMarlies GrimmerCarsten DrebenstedtMDPI AGarticlereactive transport modelingion exchange resinsmine watermetal removalPhreeqCHydraulic engineeringTC1-978Water supply for domestic and industrial purposesTD201-500ENWater, Vol 13, Iss 3109, p 3109 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	reactive transport modeling ion exchange resins mine water metal removal PhreeqC Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500
spellingShingle	reactive transport modeling ion exchange resins mine water metal removal PhreeqC Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500 Angela Isabel Pedregal Montes Janith Abeywickrama Nils Hoth Marlies Grimmer Carsten Drebenstedt Modeling of Ion Exchange Processes to Optimize Metal Removal from Complex Mine Water Matrices
description	The modeling of ion exchange processes could significantly enhance their applicability in mine water treatment, as the modern synthetic resins give unique advantages for the removal of metals. Accurate modeling improves the predictability of the process, minimizing the time and costs involved in laboratory column testing. However, to date, the development and boundary conditions of such ion exchange systems with complex mine waters are rarely studied and poorly understood. A representative ion exchange model requires the definition of accurate parameters and coefficients. Therefore, theoretical coefficients estimated from natural exchange materials that are available in geochemical databases often need to be modified. A 1D reactive transport model was developed based on PhreeqC code, using three case scenarios of synthetic mine waters and varying the operating conditions. The first approach was defined with default exchange coefficients from the phreeqc.dat database to identify and study the main parameters and coefficients that govern the model: cation exchange capacity, exchange coefficients, and activity coefficients. Then, these values were adjusted through iterative calibration until a good approximation between experimental and simulation breakthrough curves was achieved. This study proposes a suitable methodology and challenges for modeling the removal of metals from complex mine waters using synthetic ion exchange resins.
format	article
author	Angela Isabel Pedregal Montes Janith Abeywickrama Nils Hoth Marlies Grimmer Carsten Drebenstedt
author_facet	Angela Isabel Pedregal Montes Janith Abeywickrama Nils Hoth Marlies Grimmer Carsten Drebenstedt
author_sort	Angela Isabel Pedregal Montes
title	Modeling of Ion Exchange Processes to Optimize Metal Removal from Complex Mine Water Matrices
title_short	Modeling of Ion Exchange Processes to Optimize Metal Removal from Complex Mine Water Matrices
title_full	Modeling of Ion Exchange Processes to Optimize Metal Removal from Complex Mine Water Matrices
title_fullStr	Modeling of Ion Exchange Processes to Optimize Metal Removal from Complex Mine Water Matrices
title_full_unstemmed	Modeling of Ion Exchange Processes to Optimize Metal Removal from Complex Mine Water Matrices
title_sort	modeling of ion exchange processes to optimize metal removal from complex mine water matrices
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/d76a2c9e03c6432f909ee98937895c0f
work_keys_str_mv	AT angelaisabelpedregalmontes modelingofionexchangeprocessestooptimizemetalremovalfromcomplexminewatermatrices AT janithabeywickrama modelingofionexchangeprocessestooptimizemetalremovalfromcomplexminewatermatrices AT nilshoth modelingofionexchangeprocessestooptimizemetalremovalfromcomplexminewatermatrices AT marliesgrimmer modelingofionexchangeprocessestooptimizemetalremovalfromcomplexminewatermatrices AT carstendrebenstedt modelingofionexchangeprocessestooptimizemetalremovalfromcomplexminewatermatrices
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Modeling of Ion Exchange Processes to Optimize Metal Removal from Complex Mine Water Matrices

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