Effect of internal and external resistances on desalination in microbial desalination cell

The green and cost-effective nature of the microbial desalination cell (MDC) make it a promising alternative for future sustainable desalination. However, MDC suffers from a low desalination rate that inhibits it being commercialized. External resistance (Rext) is one of the factors that significant...

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Autores principales:	Sadik Rahman, Abdullah Al-Mamun, Tahereh Jafary, Halima Alhimali, Mahad Said Baawain
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	desalination rate external resistance internal resistance microbial desalination cell Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/46332cf2dd204d598200e14e8857106a
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spelling	oai:doaj.org-article:46332cf2dd204d598200e14e8857106a2021-11-06T11:05:24ZEffect of internal and external resistances on desalination in microbial desalination cell0273-12231996-973210.2166/wst.2021.145https://doaj.org/article/46332cf2dd204d598200e14e8857106a2021-05-01T00:00:00Zhttp://wst.iwaponline.com/content/83/10/2389https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732The green and cost-effective nature of the microbial desalination cell (MDC) make it a promising alternative for future sustainable desalination. However, MDC suffers from a low desalination rate that inhibits it being commercialized. External resistance (Rext) is one of the factors that significantly affect the desalination rate in MDCs, which is still under debate. This research, for the first time, investigated the impact of Rext on MDCs with different internal resistance (Rint) of the system to discover the optimal range of Rext for efficient MDC performance. The results showed that the effect of Rext on desalination rate (2.52 mg/h) was quite low when the Rint of MDC was high (200 Ω). However, operating the MDC with a low Rint (67 Ω) significantly improved the desalination rate (9.85 mg/h) and current generation. When MDC was operated with a low Rint the effect of variable Rext on desalination and current generation was noticeable. Therefore, low Rint (67 Ω) MDC was used to select the optimum Rext when the optimal range was found to be Rext ≪ Rint, Rext < Rint, Rext ≈ Rint (ranging from 1–69 Ω) to achieve the highest desalination rates (10.41–8.59 mg/h). The results showed the superior effect of Rint on desalination rate before selecting the optimal range of Rext in the outer circuit. HIGHLIGHTS Low desalination rate in MDCs involves both Rext and Rint.; Impact of Rext and Rint was collectively investigated in MDCs.; Effect of Rext was insignificant when internal resistance was high.; Optimum range of Rext was explored for MDC with low Rint.; Rext ≪ Rint, Rext < Rint, Rext ≈ Rint were the optimum Rext for high desalination rate.;Sadik RahmanAbdullah Al-MamunTahereh JafaryHalima AlhimaliMahad Said BaawainIWA Publishingarticledesalination rateexternal resistanceinternal resistancemicrobial desalination cellEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 83, Iss 10, Pp 2389-2403 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	desalination rate external resistance internal resistance microbial desalination cell Environmental technology. Sanitary engineering TD1-1066
spellingShingle	desalination rate external resistance internal resistance microbial desalination cell Environmental technology. Sanitary engineering TD1-1066 Sadik Rahman Abdullah Al-Mamun Tahereh Jafary Halima Alhimali Mahad Said Baawain Effect of internal and external resistances on desalination in microbial desalination cell
description	The green and cost-effective nature of the microbial desalination cell (MDC) make it a promising alternative for future sustainable desalination. However, MDC suffers from a low desalination rate that inhibits it being commercialized. External resistance (Rext) is one of the factors that significantly affect the desalination rate in MDCs, which is still under debate. This research, for the first time, investigated the impact of Rext on MDCs with different internal resistance (Rint) of the system to discover the optimal range of Rext for efficient MDC performance. The results showed that the effect of Rext on desalination rate (2.52 mg/h) was quite low when the Rint of MDC was high (200 Ω). However, operating the MDC with a low Rint (67 Ω) significantly improved the desalination rate (9.85 mg/h) and current generation. When MDC was operated with a low Rint the effect of variable Rext on desalination and current generation was noticeable. Therefore, low Rint (67 Ω) MDC was used to select the optimum Rext when the optimal range was found to be Rext ≪ Rint, Rext < Rint, Rext ≈ Rint (ranging from 1–69 Ω) to achieve the highest desalination rates (10.41–8.59 mg/h). The results showed the superior effect of Rint on desalination rate before selecting the optimal range of Rext in the outer circuit. HIGHLIGHTS Low desalination rate in MDCs involves both Rext and Rint.; Impact of Rext and Rint was collectively investigated in MDCs.; Effect of Rext was insignificant when internal resistance was high.; Optimum range of Rext was explored for MDC with low Rint.; Rext ≪ Rint, Rext < Rint, Rext ≈ Rint were the optimum Rext for high desalination rate.;
format	article
author	Sadik Rahman Abdullah Al-Mamun Tahereh Jafary Halima Alhimali Mahad Said Baawain
author_facet	Sadik Rahman Abdullah Al-Mamun Tahereh Jafary Halima Alhimali Mahad Said Baawain
author_sort	Sadik Rahman
title	Effect of internal and external resistances on desalination in microbial desalination cell
title_short	Effect of internal and external resistances on desalination in microbial desalination cell
title_full	Effect of internal and external resistances on desalination in microbial desalination cell
title_fullStr	Effect of internal and external resistances on desalination in microbial desalination cell
title_full_unstemmed	Effect of internal and external resistances on desalination in microbial desalination cell
title_sort	effect of internal and external resistances on desalination in microbial desalination cell
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/46332cf2dd204d598200e14e8857106a
work_keys_str_mv	AT sadikrahman effectofinternalandexternalresistancesondesalinationinmicrobialdesalinationcell AT abdullahalmamun effectofinternalandexternalresistancesondesalinationinmicrobialdesalinationcell AT taherehjafary effectofinternalandexternalresistancesondesalinationinmicrobialdesalinationcell AT halimaalhimali effectofinternalandexternalresistancesondesalinationinmicrobialdesalinationcell AT mahadsaidbaawain effectofinternalandexternalresistancesondesalinationinmicrobialdesalinationcell
_version_	1718443726570782720

Effect of internal and external resistances on desalination in microbial desalination cell

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