Performance optimization of microbial electrolysis cell (MEC) for palm oil mill effluent (POME) wastewater treatment and sustainable Bio-H2 production using response surface methodology (RSM) |
| |
| Affiliation: | 1. Laboratory of Environmental Science and Technology, The Xinjiang Technical Institute of Physics and Chemistry, Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences, Urumqi, 830011, China;2. Center of Material and Opto-electronic Research, University of Chinese Academy of Sciences, Beijing, 100049, China;3. School of Civil and Environmental Engineering, Yonsei University, Seoul, 03722, Republic of Korea;4. Department of Biotechnology, Engineering School of Lorena, University of São Paulo, São Paulo, 12602-810, Brazil;5. Laboratory for Quantum Semiconductors and Photon-based BioNanotechnology, Department of Electrical and Computer Engineering, Faculty of Engineering, Université de Sherbrooke, Sherbrooke, Québec, J1K 2R1, Canada;6. Research Center for Environmental Contaminants (RCEC), Abadan University of Medical Sciences, Abadan, Iran;7. Environmental Engineering Lab, Civil Engineering Department, National Institute of Technology Hamirpur, Hamirpur, Himachal Pradesh, 177005, India;8. Faculty of Engineering, Department of Civil Engineering, Annasaheb Dange College of Engineering and Technology, Ashta, Maharashtra, 416301, India;9. Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, National University of Malaysia (UKM), UKM Bangi, 43600, Selangor, Malaysia;10. School of Biosciences and Biotechnology, Faculty of Science and Technology, National University of Malaysia (UKM), UKM Bangi, 43600, Selangor, Malaysia;11. Research Centre for Sustainable Process Technology, Faculty of Engineering and Built Environment, National University of Malaysia (UKM), UKM Bangi, 43600, Selangor, Malaysia |
| |
| Abstract: | Microbial electrolysis cells (MECs) are a new bio-electrochemical method for converting organic matter to hydrogen gas (H2). Palm oil mill effluent (POME) is hazardous wastewater that is mostly formed during the crude oil extraction process in the palm oil industry. In the present study, POME was used in the MEC system for hydrogen generation as a feasible treatment technology. To enhance biohydrogen generation from POME in the MEC, an empirical model was generated using response surface methodology (RSM). A central composite design (CCD) was utilized to perform twenty experimental runs of MEC given three important variables, namely incubation temperature, initial pH, and influent dilution rate. Experimental results from CCD showed that an average value of 1.16 m3 H2/m3 d for maximum hydrogen production rate (HPR) was produced. A second-order polynomial model was adjusted to the experimental results from CCD. The regression model showed that the quadratic term of all variables tested had a highly significant effect (P < 0.01) on maximum HPR as a defined response. The analysis of the empirical model revealed that the optimal conditions for maximum HPR were incubation temperature, initial pH, and influent dilution rate of 30.23 °C, 6.63, and 50.71%, respectively. Generated regression model predicted a maximum HPR of 1.1659 m3 H2/m3 d could be generated under optimum conditions. Confirmation experimentation was conducted in the optimal conditions determined. Experimental results of the validation test showed that a maximum HPR of 1.1747 m3 H2/m3 d was produced. |
| |
| Keywords: | Microbial electrolysis cell (MEC) Hydrogen production Palm oil mill effluent (POME) Wastewater Optimization Response surface methodology (RSM) |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
