| Title |
Enhancing copper recovery and electricity generation from wastewater using low-cost membrane-less microbial fuel cell with a carbonized clay cup as cathode |
| ID_Doc |
10492 |
| Authors |
Liu, SH; Lai, CY; Chang, PH; Lin, CW; Chen, YH |
| Title |
Enhancing copper recovery and electricity generation from wastewater using low-cost membrane-less microbial fuel cell with a carbonized clay cup as cathode |
| Year |
2020 |
| Published |
|
| DOI |
10.1016/j.jclepro.2019.119118 |
| Abstract |
The recovery of low concentrations of copper in wastewater for industrial reuses meets the goals of circular economy. This work develops a modified clay cup (MCC) that can be used as a cathode in a membrane-less microbial fuel cell (ML-MFC) because of its porosity, adsorption and conductivity. The ML-MFC was then used to treat copper-containing wastewater and generate electricity. Cu2+ is removed from wastewater and electricity produced primarily by the adsorption of Cu2+ in the wastewater onto the MCC, reducing its inhibitory effects on biodegradation. Cu2+ in wastewater can be reduced in an MFC to form copper-containing compounds on the surface of the MCC. Cu2O can be used as a catalyst to modify the cathode to improve electricity production. In seven days ML-MFC with a power density of 113.7 mW/m(2) removed 96.5% of the Cu2+. At neutral pH, Cu2O was observed on the surface of the MCC and modification of cathode reduced the internal resistance of the ML-MFC by 30%, increasing the output voltage. Cyclic voltammetry revealed a redox peak current at pH 7 that was 1.11-5.45 times under other conditions. This work demonstrates the feasibility of using an MCC cathode to increase the recovery of Cu2+ and the generation of electricity by an MFC. (C) 2019 Elsevier Ltd. All rights reserved. |
| Author Keywords |
Membrane-less microbial fuel cell; Modified clay cup; Copper recovery; Electricity generation |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:000505696700038 |
| WoS Category |
Green & Sustainable Science & Technology; Engineering, Environmental; Environmental Sciences |
| Research Area |
Science & Technology - Other Topics; Engineering; Environmental Sciences & Ecology |
| PDF |
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