title: Assessing potential cathodes for resource recovery through wastewater treatment and salinity removal using non-buffered microbial electrochemical systems.
abstract: The present study evaluates relative functioning of microbial electrochemical systems (MES) for simultaneous wastewater treatment, desalination and resource recovery. Two MES were designed having abiotic cathode (MES-A) and algal biocathode (MES-B) which were investigated with synthetic feed and saline water as proxy of typical real-field wastewater. Comparative anodic and cathodic efficiencies revealed a distinct disparity in both the MES when operated in open circuit (OC) and closed circuit (CC). The maximum open circuit voltage (OCV) read in MES-A and MES-B was about 700mV and 600mV, respectively. Salinity and organic carbon removal efficiencies were noticed high during CC operation as 72% and 55% in MES-A and 60% and 63% in MES-B. These discrete observations evidenced ascribe to the influence of microbial electrochemical induced ion-migration over cathodic reduction reactions (CRR).
authors.affiliation: Bioengineering and Environmental Sciences (BEES), CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India.
authors.forename: G N
authors.initials: GN
authors.lastname: Nikhil
authors.affiliation: Bioengineering and Environmental Sciences (BEES), CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India.
authors.forename: Dileep Kumar
authors.initials: DK
authors.lastname: Yeruva
authors.affiliation: Bioengineering and Environmental Sciences (BEES), CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India. Electronic address: vmohan_s@yahoo.com.
authors.forename: S
authors.initials: S
authors.lastname: Venkata Mohan
authors.affiliation: Bioengineering and Environmental Sciences (BEES), CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India.
authors.forename: Y V
authors.initials: YV
authors.lastname: Swamy
mesh_terms: D001674:Bioelectric Energy Sources; D057919:Biological Oxygen Demand Analysis; D055664:Electrochemical Techniques; D004566:Electrodes; D005285:Fermentation; D006863:Hydrogen-Ion Concentration; D059027:Recycling; D054712:Salinity; D012492:Salts / Q000302:isolation & purification; D062065:Wastewater / Q000032:analysis*; D018508:Water Purification / Q000379:methods*
chemical_list: D012492:Salts; D062065:Wastewater
keywords: Algal Biocathode; Bioelectrofermentation; Membrane; Microbial desalination; Total dissolved solids