Salt removal using multiple microbial desalination cells under continuous flow conditions

Handle URI:
http://hdl.handle.net/10754/599549
Title:
Salt removal using multiple microbial desalination cells under continuous flow conditions
Authors:
Qu, Youpeng; Feng, Yujie; Liu, Jia; He, Weihua; Shi, Xinxin; Yang, Qiao; Lv, Jiangwei; Logan, Bruce E.
Abstract:
Four microbial desalination cells (MDCs) were hydraulically connected and operated under continuous flow conditions. The anode solution from the first MDC flowed into the cathode, and then on to the anode of the next reactor, which avoided pH imbalances that inhibit bacterial metabolism. The salt solution also moved through each desalination chamber in series. Increasing the hydraulic retention times (HRTs) of the salt solution from 1 to 2. days increased total NaCl removal from 76 ± 1% to 97 ± 1%, but coulombic efficiencies decreased from 49 ± 4% to 35 ± 1%. Total COD removals were similar at both HRTs (60 ± 2%, 2. days; 59 ± 2%, 1. day). Community analysis of the anode biofilms showed that bacteria most similar to the xylose fermenting bacterium Klebsiella ornithinolytica predominated in the anode communities, and sequences most similar to Geobacter metallireducens were identified in all MDCs except the first one. These results demonstrated successful operation of a series of hydraulically connected MDCs and good desalination rates. © 2013 Elsevier B.V..
Citation:
Qu Y, Feng Y, Liu J, He W, Shi X, et al. (2013) Salt removal using multiple microbial desalination cells under continuous flow conditions. Desalination 317: 17–22. Available: http://dx.doi.org/10.1016/j.desal.2013.02.016.
Publisher:
Elsevier BV
Journal:
Desalination
KAUST Grant Number:
KUS-I1-003-13
Issue Date:
May-2013
DOI:
10.1016/j.desal.2013.02.016
Type:
Article
ISSN:
0011-9164
Sponsors:
The technical assistance of Prof. Yu Li (Harbin institute of technology) is highly appreciated. This research was supported by the State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (2013DX08), the China Postdoctoral Science Foundation (2011M500671), the National Natural Science Foundation of China (51209061), the National Science Foundation for Distinguished Young Scholars of China (51125033), and the King Abdullah University of Science and Technology (KAUST) (Award KUS-I1-003-13).
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Publications Acknowledging KAUST Support

Full metadata record

DC FieldValue Language
dc.contributor.authorQu, Youpengen
dc.contributor.authorFeng, Yujieen
dc.contributor.authorLiu, Jiaen
dc.contributor.authorHe, Weihuaen
dc.contributor.authorShi, Xinxinen
dc.contributor.authorYang, Qiaoen
dc.contributor.authorLv, Jiangweien
dc.contributor.authorLogan, Bruce E.en
dc.date.accessioned2016-02-28T05:53:11Zen
dc.date.available2016-02-28T05:53:11Zen
dc.date.issued2013-05en
dc.identifier.citationQu Y, Feng Y, Liu J, He W, Shi X, et al. (2013) Salt removal using multiple microbial desalination cells under continuous flow conditions. Desalination 317: 17–22. Available: http://dx.doi.org/10.1016/j.desal.2013.02.016.en
dc.identifier.issn0011-9164en
dc.identifier.doi10.1016/j.desal.2013.02.016en
dc.identifier.urihttp://hdl.handle.net/10754/599549en
dc.description.abstractFour microbial desalination cells (MDCs) were hydraulically connected and operated under continuous flow conditions. The anode solution from the first MDC flowed into the cathode, and then on to the anode of the next reactor, which avoided pH imbalances that inhibit bacterial metabolism. The salt solution also moved through each desalination chamber in series. Increasing the hydraulic retention times (HRTs) of the salt solution from 1 to 2. days increased total NaCl removal from 76 ± 1% to 97 ± 1%, but coulombic efficiencies decreased from 49 ± 4% to 35 ± 1%. Total COD removals were similar at both HRTs (60 ± 2%, 2. days; 59 ± 2%, 1. day). Community analysis of the anode biofilms showed that bacteria most similar to the xylose fermenting bacterium Klebsiella ornithinolytica predominated in the anode communities, and sequences most similar to Geobacter metallireducens were identified in all MDCs except the first one. These results demonstrated successful operation of a series of hydraulically connected MDCs and good desalination rates. © 2013 Elsevier B.V..en
dc.description.sponsorshipThe technical assistance of Prof. Yu Li (Harbin institute of technology) is highly appreciated. This research was supported by the State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (2013DX08), the China Postdoctoral Science Foundation (2011M500671), the National Natural Science Foundation of China (51209061), the National Science Foundation for Distinguished Young Scholars of China (51125033), and the King Abdullah University of Science and Technology (KAUST) (Award KUS-I1-003-13).en
dc.publisherElsevier BVen
dc.subjectContinuous flowen
dc.subjectMicrobial desalination cellen
dc.subjectPH imbalanceen
dc.titleSalt removal using multiple microbial desalination cells under continuous flow conditionsen
dc.typeArticleen
dc.identifier.journalDesalinationen
dc.contributor.institutionHarbin Institute of Technology, Harbin, Chinaen
dc.contributor.institutionPennsylvania State University, State College, United Statesen
kaust.grant.numberKUS-I1-003-13en
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