Issue 8, 2023

Degradation of phenolic compounds in wastewater using a conical-shaped packed-bed microbial fuel cell in continuous flow with recycling

Abstract

A unique conical-shaped single-chamber (SC) microbial fuel cell (MFC) set-up was used to demonstrate the feasibility of continuous mode operation with recycling for the enhanced degradation of phenolic compounds in wastewater. Here, 1,2-propanediol/propylene glycol (1-2-PD, a phenolic compound) was used as the model phenolic compound, which is commonly found in pharmaceutical and cosmetic industrial effluents. Different flow rates (Q = 1, 3, and 5 cc min−1) and recycling ratios (RQ = 0.5, 1, 1.5 cc min−1) were used to study the effect of recycling on wastewater treatment in the continuous mode. The effects of the 1-2-PD concentration (1000, 5000, and 10 000 ppm) and solution pH (6.23, 7.84, and 8.32) on the efficacy of SCMFC were determined. The maximum voltage generation (∼380 mV), chemical oxygen demand reduction (∼80%), and 1-2-PD degradation (∼84%) were measured at the optimized effluent and with a recycling flowrate of 1 cc min−1 each. The 16s rRNA sequencing confirmed the abundance of Paenibacillus and Pseudomonas genera in the mixed bacterial culture of the effluent. This study emphasizes the necessity of recycling during wastewater treatment in an SCMFC operated in the continuous mode, which may be further useful for designing new types of effluent treatment plants integrated with MFC for efficiently treating industrial wastewater effluent contaminated with organic compounds.

Graphical abstract: Degradation of phenolic compounds in wastewater using a conical-shaped packed-bed microbial fuel cell in continuous flow with recycling

Supplementary files

Article information

Article type
Communication
Submitted
05 Қар. 2022
Accepted
30 Қаң. 2023
First published
30 Қаң. 2023

J. Mater. Chem. A, 2023,11, 3942-3948

Degradation of phenolic compounds in wastewater using a conical-shaped packed-bed microbial fuel cell in continuous flow with recycling

S. Singh, K. Pandey and N. Verma, J. Mater. Chem. A, 2023, 11, 3942 DOI: 10.1039/D2TA08667K

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements