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AuthorPing, Qingyun
AuthorAbu-Reesh, Ibrahim M.
AuthorHe, Zhen
Available date2021-04-15T14:11:21Z
Publication Date2016
Publication NameScience of the Total Environment
ResourceScopus
URIhttp://dx.doi.org/10.1016/j.scitotenv.2016.06.220
URIhttp://hdl.handle.net/10576/18273
AbstractBoron removal is an arising issue in desalination plants due to boron's toxicity. As an emerging treatment concept, bioelectrochemical systems (BES) can achieve potentially cost-effective boron removal by taking advantage of cathodic-produced alkali. Prior studies have demonstrated successful removal of boron in microbial desalination cells (MDCs) and microbial fuel cells (MFCs), both of which are representative BES. Herein, mathematical models were developed to further evaluate boron removal by different BES and understand the key operating factors. The models delivered very good prediction of the boron concentration in the MDC integrated with Donnan Dialysis (DD) system with the lowest relative root-mean-square error (RMSE) of 0.00%; the predication of the MFC performance generated the highest RMSE of 18.55%. The model results of salt concentration, solution pH, and current generation were well fitted with experimental data for RMSE values mostly below 10%. The long term simulation of the MDC-DD system suggests that the accumulation of salt in the catholyte/stripping solution could have a positive impact on the removal of boron due to osmosis-driven convection. The current generation in the MDC may have little influence on the boron removal, while in the MFC the current-driven electromigration can contribute up to 40% of boron removal. Osmosis-induced convection transport of boron could be the major driving force for boron removal to a low level <�2�mg�L?�1. The ratio between the anolyte and the catholyte flow rates should be kept >�22.2 in order to avoid boron accumulation in the anolyte effluent.
SponsorThis work was made possible by NPRP grant # 6-289-2-125 from the Qatar National Research Fund (a member of Qatar Foundation). The statements made herein are solely the responsibility of the authors.
Languageen
PublisherElsevier B.V.
SubjectBioelectrochemical systems
Boron removal
Mathematical modeling
Microbial desalination cells
Microbial fuel cells
Water treatment
TitleMathematical modeling based evaluation and simulation of boron removal in bioelectrochemical systems
TypeArticle
Pagination1380-1389
Volume Number569-570
dc.accessType Abstract Only


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