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Effect of electron acceptors on electricity production and desalination of Caspian Sea water using microbial desalination cells

Year of publication

2024

Authors

Zazouli Mohammad Ali;; Zahedi Atefeh; Rodríguez Susana; Hashempour Yalda

Abstract

The Microbial Desalination Cell (MDC) stands out as an innovative and a sustainable technology for both renewable energy generation and water treatment. The choice of electron acceptor significantly influences the efficiency of electricity flow. This study focuses on exploring the MDC performance under different conditions, including variations in cathode electron acceptors, initial pH levels, and hydraulic retention time (HRT). The investigation assesses simultaneous reduction of TDS and power generation from Caspian Sea water, a prominent saline water source in northern Iran, in both open-circuit (OC) and closed-circuit (CC) modes. The findings reveal that sodium hypochlorite, potassium permanganate, and potassium bromate as catholyte achieved TDS reduction rates of 84%, 77%, and 72%, respectively, under CC conditions at pH 5. Furthermore, it was observed that increasing HRT and pH levels lead to a decrease in desalination efficiency and power generation. Notably, the study highlights that the maximum power density was attained using permanganate, hypochlorite, and bromate as catholyte in both OC and CC configurations. By showcasing the adaptability of MDC performance with different cathode electron acceptors under varying conditions, this research offers valuable insights for optimizing MDC efficiency when treating real saline water sources.
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Organizations and authors

LUT University

Rodriguez Couto Susana Orcid -palvelun logo

Publication type

Publication format

Article

Parent publication type

Journal

Article type

Original article

Audience

Scientific

Peer-reviewed

Peer-Reviewed

MINEDU's publication type classification code

A1 Journal article (refereed), original research

Publication channel information

​Publication forum

58429

​Publication forum level

1

Open access

Open access in the publisher’s service

No

Open access of publication channel

Partially open publication channel

Self-archived

No

Other information

Fields of science

Chemical engineering

Keywords

[object Object],[object Object],[object Object]

Internationality of the publisher

International

International co-publication

Yes

Co-publication with a company

No

DOI

10.1080/09603123.2024.2387153

The publication is included in the Ministry of Education and Culture’s Publication data collection

Yes