Journal
BIORESOURCE TECHNOLOGY
Volume 332, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2021.125077
Keywords
Microbial nutrient recovery cell; Microbial fuel cell; APTES modified carbon brush; Bioenergy production; Nutrient recovery system
Funding
- MVTT foundation
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The study found that microbial nutrient recovery cells with carbon-modified electrodes showed superior efficiency in removing ammonium ions and chemical oxygen demand, with stable voltage and high power density.
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/m(2).
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