title: Concurrent hydrogen production and phosphorus recovery in dual chamber microbial electrolysis cell.
abstract: Concurrent hydrogen (H2) production and phosphorus (P) recovery were investigated in dual chamber microbial electrolysis cells (MECs). The aim of the study was to explore and understand the influence of applied voltage and influent COD concentration on concurrent H2production and P recovery in MEC. P was efficiently precipitated at the cathode chamber and the precipitated crystals were verified as struvite, using X-ray diffraction and scanning electron microscopy analysis. The maximum P precipitation efficiency achieved by the MEC was 95%, and the maximum H2production rate was 0.28m3-H2/m3-d. Response surface methodology showed that applied voltage had a great influence on H2production and P recovery, while influent COD concentration had a significant effect on P recovery only. The overall energy recovery in the MEC was low and ranged from 25±1 to 37±1.7%. These results confirmed MECs capability for concurrent H2production and P recovery.
authors.affiliation: Hydro-Environment Research Centre, Energy and Environment Theme, Cardiff University School of Engineering, Queen's Buildings, The Parade, Cardiff CF24 3AA, UK; Kuwait Institute of Scientific Research, P.O. Box 24885, Safat, 13109, Kuwait. Electronic address: amatouq@kisr.edu.kw.
authors.forename: Abdullah
authors.initials: A
authors.lastname: Almatouq
authors.affiliation: Institute of Public Health and Environmental Engineering, School of Civil Engineering, University of Leeds, Leeds LS2 9JT, UK.
authors.forename: A O
authors.initials: AO
authors.lastname: Babatunde
mesh_terms: D001674:Bioelectric Energy Sources; D004566:Electrodes; D004572:Electrolysis; D006859:Hydrogen; D010758:Phosphorus
chemical_list: D010758:Phosphorus; D006859:Hydrogen
keywords: Bio-electrochemical system; Microbial electrolysis cell; Phosphorus recovery; Response surface methodology; Struvite