title: Electrosorption driven by microbial fuel cells to remove phenol without external power supply.
abstract: This work studied the operating parameters (pH, electrolyte concentration, initial phenol concentration, MFCs connection numbers and mode), adsorption isotherms and kinetics of a novel electrosorption driven by microbial fuel cells (MFC-Sorption) to remove phenol without external electric grid energy supply. It proved that high electrolyte concentration and low solution pH promoted the performance of phenol removal. 3 MFCs connections in series achieved a adsorption capacity of 1.76 mmol/g, which was much higher than that in parallel connection (1.46 mmol/g). Well fitted with Langmuir isotherm, the maximum adsorption capacity by MFC-Sorption and electrosorption was observed 48% and 65% higher than that by conventional adsorption. The phenol removal by MFC-Sorption was supposed to be more suitable for a pseudo-second-order kinetics, and with the increase of initial phenol concentration from 20 mg/L to 300 mg/L, the initial adsorption rate increased 26.99-fold. It concluded that the MFC-Sorption system could cost-effectively remove pollutant of phenol.
authors.affiliation: Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, Tianjin Key Laboratory of Urban Ecology Environmental Remediation and Pollution Control, Research Center for Sustainable Energy & Environmental Technologies, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China.
authors.forename: Jie
authors.initials: J
authors.lastname: Yang
authors.forename: Minghua
authors.initials: M
authors.lastname: Zhou
authors.forename: Yingying
authors.initials: Y
authors.lastname: Zhao
authors.forename: Chao
authors.initials: C
authors.lastname: Zhang
authors.forename: Youshuang
authors.initials: Y
authors.lastname: Hu
mesh_terms: D000327:Adsorption; D001674:Bioelectric Energy Sources; D057919:Biological Oxygen Demand Analysis; D011211:Electric Power Supplies; D055664:Electrochemical Techniques / Q000379:methods*; D004573:Electrolytes; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D019800:Phenol / Q000302:isolation & purification*; D013696:Temperature; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*
chemical_list: D004573:Electrolytes; D014874:Water Pollutants, Chemical; D019800:Phenol
keywords: Adsorption isotherms; Adsorption kinetics; Electrosorption; Microbial fuel cell; Phenol