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Removal of Organic Ions Using Capacitive Deionization : = An Experimental and Modeling Approach to Understand Adsorption Mechanisms.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Removal of Organic Ions Using Capacitive Deionization :/
其他題名:	An Experimental and Modeling Approach to Understand Adsorption Mechanisms.
作者:	Hossen, Elvin Haffez.
面頁冊數:	1 online resource (212 pages)
附註:	Source: Dissertations Abstracts International, Volume: 84-09, Section: B.
Contained By:	Dissertations Abstracts International84-09B.
標題:	Membranes. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30308528click for full text (PQDT)
ISBN:	9798374479416

Removal of Organic Ions Using Capacitive Deionization : = An Experimental and Modeling Approach to Understand Adsorption Mechanisms.
Hossen, Elvin Haffez.

Removal of Organic Ions Using Capacitive Deionization :An Experimental and Modeling Approach to Understand Adsorption Mechanisms. - 1 online resource (212 pages)

Source: Dissertations Abstracts International, Volume: 84-09, Section: B.

Thesis (Ph.D.)--North Carolina State University, 2022.

Includes bibliographical references

Application of advanced separation technologies in water and wastewater industry has always been a critical challenge for stakeholders to ensure more sustainable process of contaminant removal or species recovery. An increasing pressure for environmental protection as well as resource demand resulted in the elevated interests of exploring a wide range of separation techniques to maximize process efficiency and prioritize circular green economy concept. Presence of organic contaminants in water or wastewater is one of the focal points for advanced separation methods given the potential for the recovery of valuable organic species.Capacitive deionization (CDI), an electrochemical method for desalination, has primarily been studied and developed for the removal of small inorganic ions (e.g., Na+, Cl-). However, our fundamental understanding of organic ion electrosorption lags behind that of inorganic ions, which prevents the informed design and operation of CDI cells that can selectively remove organics. Many organic ions have properties that vary significantly from model inorganic ions particularly pertaining to their ability to be physically and/or chemically adsorbed to activated carbon (AC)-based electrodes. It is challenging, if not impossible, to extrapolate experimental and modeling efforts from inorganic to organic ions, especially those with dramatically different properties. This dissertation provides insights into organic ion removal in CDI by conducting three projects: 1) studying the removal of short-chain carboxylate ions in CDI, 2) elucidating the contribution of different adsorption processes of organic ions and their impacts on electrode properties and performances of CDI, and 3) establishing kinetic and thermodynamic models to predict the performance of short-chain carboxylate ions in CDI.The first project (Chapter 2) shows how CDI with AC cloth electrodes can remove shortchain carboxylate ions from water at different capacity depending on the ionic mobility and size of organic ions, providing the first answer towards understanding the adsorption of organic ions in CDI.The second project (Chapter 3) investigated the dynamics of different adsorption mechanisms in CDI treating carboxylate ions, highlighting the role of non-electrosorption of organic ions in changing the ability of carbon electrodes to electrosorb charged species.The third project (Chapter 4) delved into the kinetic and thermodynamic modeling development and verification in order to better estimate the performance of CDI treating carboxylate ions. Both experimental and modeling approaches, as well as computational analysis were performed in this dissertation to understand the adsorption mechanisms of organic ions onto carbon electrodes in CDI.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2023

Mode of access: World Wide Web

ISBN: 9798374479416Subjects--Topical Terms:

1531702
Membranes.
Index Terms--Genre/Form:

542853
Electronic books.

Removal of Organic Ions Using Capacitive Deionization : = An Experimental and Modeling Approach to Understand Adsorption Mechanisms.
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500 $a Source: Dissertations Abstracts International, Volume: 84-09, Section: B.
500 $a Advisor: Ducoste, Joel; Bowden, Edmond; Knappe, Detlef; Call, Douglas.
502 $a Thesis (Ph.D.)--North Carolina State University, 2022.
504 $a Includes bibliographical references
520 $a Application of advanced separation technologies in water and wastewater industry has always been a critical challenge for stakeholders to ensure more sustainable process of contaminant removal or species recovery. An increasing pressure for environmental protection as well as resource demand resulted in the elevated interests of exploring a wide range of separation techniques to maximize process efficiency and prioritize circular green economy concept. Presence of organic contaminants in water or wastewater is one of the focal points for advanced separation methods given the potential for the recovery of valuable organic species.Capacitive deionization (CDI), an electrochemical method for desalination, has primarily been studied and developed for the removal of small inorganic ions (e.g., Na+, Cl-). However, our fundamental understanding of organic ion electrosorption lags behind that of inorganic ions, which prevents the informed design and operation of CDI cells that can selectively remove organics. Many organic ions have properties that vary significantly from model inorganic ions particularly pertaining to their ability to be physically and/or chemically adsorbed to activated carbon (AC)-based electrodes. It is challenging, if not impossible, to extrapolate experimental and modeling efforts from inorganic to organic ions, especially those with dramatically different properties. This dissertation provides insights into organic ion removal in CDI by conducting three projects: 1) studying the removal of short-chain carboxylate ions in CDI, 2) elucidating the contribution of different adsorption processes of organic ions and their impacts on electrode properties and performances of CDI, and 3) establishing kinetic and thermodynamic models to predict the performance of short-chain carboxylate ions in CDI.The first project (Chapter 2) shows how CDI with AC cloth electrodes can remove shortchain carboxylate ions from water at different capacity depending on the ionic mobility and size of organic ions, providing the first answer towards understanding the adsorption of organic ions in CDI.The second project (Chapter 3) investigated the dynamics of different adsorption mechanisms in CDI treating carboxylate ions, highlighting the role of non-electrosorption of organic ions in changing the ability of carbon electrodes to electrosorb charged species.The third project (Chapter 4) delved into the kinetic and thermodynamic modeling development and verification in order to better estimate the performance of CDI treating carboxylate ions. Both experimental and modeling approaches, as well as computational analysis were performed in this dissertation to understand the adsorption mechanisms of organic ions onto carbon electrodes in CDI.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2023
538 $a Mode of access: World Wide Web
650 4 $a Membranes. $3 1531702
650 4 $a Nitrates. $3 914879
650 4 $a Chloride. $3 3681736
650 4 $a Electrolytes. $3 656992
650 4 $a Electrodes. $3 629151
650 4 $a Water treatment. $3 3683746
650 4 $a Sodium. $3 3562677
650 4 $a Electric fields. $3 880423
650 4 $a Adsorption. $3 580046
650 4 $a Desalination. $3 3681473
650 4 $a Brackish water. $3 3686894
650 4 $a Effluents. $3 3559973
650 4 $a Energy consumption. $3 631630
650 4 $a Salinity. $3 594109
650 4 $a Activated carbon. $3 3685349
650 4 $a Electromagnetics. $3 3173223
650 4 $a Energy. $3 876794
650 4 $a Environmental engineering. $3 548583
650 4 $a Physics. $3 516296
655 7 $a Electronic books. $2 lcsh $3 542853
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690 $a 0791
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710 2 $a North Carolina State University. $3 1018772
773 0 $t Dissertations Abstracts International $g 84-09B.
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30308528 $z click for full text (PQDT)