Energy generation from full strength domestic wastewater using a sandwich dual chamber microbial fuel cell with an uncatalyzed mesh current collector cathode
- Authors: Adeniran, J.A. , De Koker, J.J. , Arotiba, O.A. , Van Zyl, E. , Du Plessis, S.
- Date: 2015
- Subjects: Microbial fuel cells , Power generation , Mesh current collector cathodes , Wastewater
- Language: english
- Type: article
- Identifier: http://hdl.handle.net/10210/15528 , uj:15671 , Adeniran, J.A. et al. 2015. Energy generation from full strength domestic wastewater using a sandwich dual chamber microbial fuel cell with an uncatalyzed mesh current collector cathode. International journal of green energy
- Description: A sandwich domestic wastewater fed dual-chamber microbial fuel cell (MFC) was designed for energy generation and wastewater treatment. Power density for the MFC increased with increasing domestic wastewater concentration, reaching a maximum of 251 mW/m2 for full strength wastewater (3400 mg/L chemical oxygen demand (COD)) at a current density of 0.054 mA/cm2 at an external resistance of 200Ω. These values dropped to 60 mW/m2 (76% lower) and 0.003 mA/cm2 using wastewater 91% diluted to 300 mg/L COD. Maximum removals were: of COD, 89%; nitrite, 60%; nitrate, 77%; total nitrogen, 36%; and phosphate, 26%.
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Simultaneous brewery wastewater treatment and hydrogen generation via hydrolysis using Mg waste scraps
- Authors: Akbarzadeh, R. , Adeniran, J.A. , Lototskyy, M. , Asadi, A.
- Date: 2020
- Subjects: Brewery wastewater , Treatment , Hydrogen generation
- Language: English
- Type: Article
- Identifier: http://hdl.handle.net/10210/433092 , uj:37436 , Citation: Akbarzadeh, R. et al. 2020. Simultaneous brewery wastewater treatment and hydrogen generation via hydrolysis using Mg waste scraps.
- Description: Abstract: An advanced, eco-efficient “waste plus waste to hydrogen” method was developed for hydrogen generation and the simultaneous treatment of two types of waste generated from magnesium and brewerybased industries via hydrolysis. The hydrolysis of Mg scraps was carried out using brewery wastewater and the reaction was accelerated with acetic acid (aa) at different concentrations (0, 12, 18, 24 and 30 wt% aa). The concentration of pollutants such as cyclortisiloxane-hexamethyle (C6H18O3Si3), which are persistent in conventional wastewater treatment, was successfully reduced. After the hydrolysis of the wastewater, 62.4% of chemical oxygen demand (COD) reduction and the complete colour removal were observed. The highest hydrogen generation, about 0.99 NL/min (>60% H2 yield in 5 min), was observed in the presence of 30 wt% aa concentration in the hydrolysis reaction. This study proposes an eco-efficient hydrogen generation and waste treatment method as it simultaneously degrades pollutants and produces hydrogen utilizing Mg scrap waste and brewery wastewater without additional energy consumption.
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