title: Endocrine disruptive estrogens role in electron transfer: bio-electrochemical remediation with microbial mediated electrogenesis.
abstract: Bioremediation of selected endocrine disrupting compounds (EDCs)/estrogens viz. estriol (E3) and ethynylestradiol (EE2) was evaluated in bio-electrochemical treatment (BET) system with simultaneous power generation. Estrogens supplementation along with wastewater documented enhanced electrogenic activity indicating their function in electron transfer between biocatalyst and anode as electron shuttler. EE2 addition showed more positive impact on the electrogenic activity compared to E3 supplementation. Higher estrogen concentration showed inhibitory effect on the BET performance. Poising potential during start up phase showed a marginal influence on the power output. The electrons generated during substrate degradation might have been utilized for the EDCs break down. Fuel cell behavior and anodic oxidation potential supported the observed electrogenic activity with the function of estrogens removal. Voltammetric profiles, dehydrogenase and phosphatase enzyme activities were also found to be in agreement with the power generation, electron discharge and estrogens removal.
authors.affiliation: IICT-CCMB Dispensary, Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 607, India.
authors.forename: A Kiran
authors.initials: AK
authors.lastname: Kumar
authors.forename: M Venkateswar
authors.initials: MV
authors.lastname: Reddy
authors.forename: K
authors.initials: K
authors.lastname: Chandrasekhar
authors.forename: S
authors.initials: S
authors.lastname: Srikanth
authors.forename: S Venkata
authors.initials: SV
authors.lastname: Mohan
mesh_terms: D001673:Biodegradation, Environmental; D001674:Bioelectric Energy Sources / Q000382:microbiology*; D004563:Electrochemistry / Q000379:methods*; D004574:Electromagnetic Fields; D052244:Endocrine Disruptors / Q000737:chemistry / Q000528:radiation effects; D004967:Estrogens / Q000737:chemistry* / Q000528:radiation effects*; D014867:Water / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000737:chemistry* / Q000528:radiation effects*; D018508:Water Purification / Q000379:methods*
chemical_list: D052244:Endocrine Disruptors; D004967:Estrogens; D014874:Water Pollutants, Chemical; D014867:Water