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Bioelectrochemical treatment and recovery of copper from distillery waste effluents using power and voltage control strategies

Lookup NU author(s): Edward Milner, Professor Ian Head, Professor Eileen Yu

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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND).


Abstract

© 2019 Elsevier B.V. Copper recovery from distillery effluent was studied in a scalable bioelectro-chemical system with approx. 6.8 L total volume. Two control strategies based on the control of power with maximum power point tracking (MPPT) and the application of 0.5 V using an external power supply were used to investigate the resultant modified electroplating characteristics. The reactor system was constructed from two electrically separated, but hydraulically connected cells, to which the MPPT and 0.5 V control strategies were applied. Three experiments were carried out using a relatively high copper concentration i.e. 1000 mg/L followed by a lower concentration i.e. 50 mg/L, with operational run times defined to meet the treatment requirements for distillery effluents considered. Real distillery waste was introduced into the cathode to reduce ionic copper concentrations. This waste was then recirculated to the anode as a feed stock after the copper depletion step, in order to test the bioenergy self-sustainability of the system. Approx. 60–95% copper was recovered in the form of deposits depending on starting concentration. However, the recovery was low when the anode was supplied with copper depleted distillery waste. Through process control (MPPT or 0.5 V applied voltage) the amount and form of the copper recovered could be manipulated.


Publication metadata

Author(s): Kaur A, Boghani HC, Milner EM, Kimber RL, Michie IS, Daalmans R, Dinsdale RM, Guwy AJ, Head IM, Lloyd JR, Yu EH, Sadhukhan J, Premier GC

Publication type: Article

Publication status: Published

Journal: Journal of Hazardous Materials

Year: 2019

Volume: 371

Pages: 18-26

Print publication date: 05/06/2019

Online publication date: 27/02/2019

Acceptance date: 26/02/2019

Date deposited: 07/05/2019

ISSN (print): 0304-3894

ISSN (electronic): 1873-3336

Publisher: Elsevier BV

URL: https://doi.org/10.1016/j.jhazmat.2019.02.100

DOI: 10.1016/j.jhazmat.2019.02.100


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