Effect of modified anode on bioenergy harvesting and nutrients removal in a microbial nutrient recovery cell

Kanwal Shahid; Deepika Lakshmi Ramasamy; Parminder Kaur; Mika Sillanpää; Arto Pihlajamäki

doi:10.1016/j.biortech.2021.125077

Effect of modified anode on bioenergy harvesting and nutrients removal in a microbial nutrient recovery cell

Bioresour Technol. 2021 Jul:332:125077. doi: 10.1016/j.biortech.2021.125077. Epub 2021 Mar 30.

Authors

Kanwal Shahid¹, Deepika Lakshmi Ramasamy², Parminder Kaur², Mika Sillanpää³, Arto Pihlajamäki²

Affiliations

¹ Department of Separation Science, School of Engineering Science, Lappeenranta-Lahti University of Technology, Sammonkatu 12, FI-50130 Mikkeli, Finland. Electronic address: kanwal.shahid@lut.fi.
² Department of Separation Science, School of Engineering Science, Lappeenranta-Lahti University of Technology, Sammonkatu 12, FI-50130 Mikkeli, Finland.
³ Institute of Research and Development, Duy Tan University, Da Nang, 550000, Viet Nam; Faculty of Environment and Chemical Engineering, Duy Tan University, Da Nang, 550000, Viet Nam; School of Civil Engineering and Surveying, Faculty of Health, Engineering and Sciences, University of Southern Queensland, West Street, Toowoomba, QLD, 4350, Australia; Department of Chemical Engineering, School of Mining, Metallurgy and Chemical Engineering, University of Johannesburg, P. O. Box 17011, Doornfontein, 2028, South Africa.

PMID: 33823475
DOI: 10.1016/j.biortech.2021.125077

Abstract

The microbial nutrient recovery cell i.e. modified microbial fuel cell containing a middle recovery chamber can be used to purify wastewater and remove valuable nutrients, while simultaneously generating electricity. The study investigated nutrient removal and microorganism interactions with carbon (CB- HT and CB- APTES) and stainless steel (SSB-HT) modified anodes used in microbial nutrient recovery cells. The removal efficiencies of ammonium ions were found higher in carbon-based CB-APTES (~98%) and CB-HT (~98.27%) systems in comparison to SSB-HT (~87.16%) system. On comparing further, the removal efficiencies of chemical oxygen demand (~99.5%) and total phosphorus (~99%) in CB- APTES system were superior to the cases of CB- HT, and SSB- HT systems. Besides, the CB-APTES based microbial fuel cell (MFC) displayed an average stable voltage of 0.5 V and a maximum power density of ~ 850 mW/m².

Keywords: APTES modified carbon brush; Bioenergy production; Microbial fuel cell; Microbial nutrient recovery cell; Nutrient recovery system.

MeSH terms

Bioelectric Energy Sources*
Electricity
Electrodes
Nutrients
Wastewater

Substances

Waste Water