Application of a five level central composite design to optimize operating conditions for electricity generation in a microbial fuel cell. Issue 6 (1st October 2016)

• Record Type: Journal Article
• Authors: Alshehria, Abdullah N.Z.; Ghanem, Khaled M.; Al-Garni, Saleh M.
• Is Part Of: Journal of Taibah University for science. Volume 10:Issue 6(2016)
• Page Start: 797
• Page End: 804
• Publication Date: 2016-10-01
• Subjects: Central composite design -- Generation of electricity -- Operating conditions -- Microbial fuel cell; Science -- Periodicals; Science; Periodicals; 505
• DOI: 10.1016/j.jtusci.2015.01.004
• Languages: English
• ISSNs: 1658-3655

Abstract

Abstract: In this work, a five level central composite design (Box–Wilson design) was employed to optimize the operating conditions for the generation of electricity in a microbial fuel cell. The following three variables were studied: temperature, initial anodic compartment pH and salt bridge component concentrations (agar and KCl). The optimal voltage yield was 17.34% greater than that observed under basal conditions and was achieved with a temperature of 32 °C, constant pH of 7.0 and salt bridge component concentrations of agar: 8.0 g/100 ml and KCL: 2.9 g/100 ml. The maximum recorded voltage at an external resistance of 30 Ω was 861.27 mV. The current density was 2.16 mA/m 2, the power density was 1887.49 mW/m 2, and the columbic efficiency was 24.12%.