TY - JOUR
T1 - Pretreatment for capacitive deionization
T2 - Feasibility tests using activated filter media and granule activated carbon filtration
AU - Kim, Heegon
AU - Choi, Yeseul
AU - Lee, Soonjae
AU - Lee, Ki Bong
AU - Jung, Kyung Won
AU - Choi, Jae Woo
N1 - Funding Information:
This work was supported by the Technology Innovation Program (10082572; Development of Low Energy Desalination Water Treatment Engineering Package System for Industrial Recycle Water Production) funded By the Ministry of Trade, Industry & Energy (Republic of Korea). In addition, we would like to thank Editage (www.editage.co.kr) for English language editing.
Funding Information:
This work was supported by the Technology Innovation Program (10082572; Development of Low Energy Desalination Water Treatment Engineering Package System for Industrial Recycle Water Production) funded By the Ministry of Trade, Industry & Energy (Republic of Korea). In addition, we would like to thank Editage ( www.editage.co.kr ) for English language editing.
Publisher Copyright:
© 2020 The Korean Society of Industrial and Engineering Chemistry
PY - 2021/1/25
Y1 - 2021/1/25
N2 - Dissolved organic matter and scaling are the main causes of electrode fouling, blocking activated carbon pores and reducing their performance. However, limited information exists on fouling by low molecular weight organic matter in the capacitive deionization (CDI) process. This study therefore systematically investigated for the first time a pretreatment process to prevent the accumulation of organic and inorganic matter as well as scaling in the CDI process. During various pretreatments, activated filter media and granule activated carbon were considered promising for drinking water treatment. The higher the turbidity and organic matter concentration in the CDI feed solution was, the greater the reduction of salt removal efficiency, production rate, and energy consumption became. Divalent ions, such as Ca2+, had no noticeable effect on CDI treatment performance because of the neutralization effect of the dispersant, whereas iron had a noticeable effect on CDI electrode fouling. The results of this study are foreseen to help minimize its negative impact by reducing organic matter fouling and enabling water reuse.
AB - Dissolved organic matter and scaling are the main causes of electrode fouling, blocking activated carbon pores and reducing their performance. However, limited information exists on fouling by low molecular weight organic matter in the capacitive deionization (CDI) process. This study therefore systematically investigated for the first time a pretreatment process to prevent the accumulation of organic and inorganic matter as well as scaling in the CDI process. During various pretreatments, activated filter media and granule activated carbon were considered promising for drinking water treatment. The higher the turbidity and organic matter concentration in the CDI feed solution was, the greater the reduction of salt removal efficiency, production rate, and energy consumption became. Divalent ions, such as Ca2+, had no noticeable effect on CDI treatment performance because of the neutralization effect of the dispersant, whereas iron had a noticeable effect on CDI electrode fouling. The results of this study are foreseen to help minimize its negative impact by reducing organic matter fouling and enabling water reuse.
KW - Activated filter media
KW - Capacitive deionization
KW - Liquid chromatography with organic carbon detection
KW - Municipal wastewater
UR - http://www.scopus.com/inward/record.url?scp=85094116843&partnerID=8YFLogxK
U2 - 10.1016/j.jiec.2020.10.001
DO - 10.1016/j.jiec.2020.10.001
M3 - Article
AN - SCOPUS:85094116843
SN - 1226-086X
VL - 93
SP - 253
EP - 258
JO - Journal of Industrial and Engineering Chemistry
JF - Journal of Industrial and Engineering Chemistry
ER -