| Title: | Potential of anaerobic co-fermentation in wastewater treatments plants: A review |
| Author(s): | Perez-Esteban N; Vinardell S; Vidal-Antich C; Pena-Picola S; Chimenos JM; Peces M; Dosta J; Astals S; |
| Address: | "Department of Chemical Engineering and Analytical Chemistry, University of Barcelona, Marti i Franques 1, 08028 Barcelona, Spain. Department of Chemical Engineering and Analytical Chemistry, University of Barcelona, Marti i Franques 1, 08028 Barcelona, Spain; Water Research Institute, University of Barcelona, Marti i Franques 1, 08028 Barcelona, Spain. Department of Materials Science and Physical Chemistry, University of Barcelona, Marti i Franques 1, 08028 Barcelona, Spain. Department of Chemistry and Bioscience, Centre for Microbial Communities, Aalborg University, Fredrik Bajers Vej 7H, 9220 Aalborg, Denmark. Department of Chemical Engineering and Analytical Chemistry, University of Barcelona, Marti i Franques 1, 08028 Barcelona, Spain. Electronic address: sastals@ub.edu" |
| DOI: | 10.1016/j.scitotenv.2021.152498 |
| ISSN/ISBN: | 1879-1026 (Electronic) 0048-9697 (Linking) |
| Abstract: | "Fermentation (not anaerobic digestion) is an emerging biotechnology to transform waste into easily assimilable organic compounds such as volatile fatty acids, lactic acid and alcohols. Co-fermentation, the simultaneous fermentation of two or more waste, is an opportunity for wastewater treatment plants (WWTPs) to increase the yields of sludge mono-fermentation. Most publications have studied waste activated sludge co-fermentation with food waste or agri-industrial waste. Mixing ratio, pH and temperature are the most studied variables. The highest fermentation yields have been generally achieved in mixtures dominated by the most biodegradable substrate at circumneutral pH and mesophilic conditions. Nonetheless, most experiments have been performed in batch assays which results are driven by the capabilities of the starting microbial community and do not allow evaluating the microbial acclimation that occurs under continuous conditions. Temperature, pH, hydraulic retention time and organic load are variables that can be controlled to optimise the performance of continuous co-fermenters (i.e., favour waste hydrolysis and fermentation and limit the proliferation of methanogens). This review also discusses the integration of co-fermentation with other biotechnologies in WWTPs. Overall, this review presents a comprehensive and critical review of the achievements on co-fermentation research and lays the foundation for future research" |
| Keywords: | "Anaerobiosis Bioreactors Fatty Acids, Volatile Fermentation Food Hydrogen-Ion Concentration *Refuse Disposal Sewage Wastewater *Water Purification Anaerobic fermentation Circular economy Primary sludge Resource recovery Short-chain carboxylic acids Waste;" |
| Notes: | "MedlinePerez-Esteban, N Vinardell, S Vidal-Antich, C Pena-Picola, S Chimenos, J M Peces, M Dosta, J Astals, S eng Review Netherlands 2021/12/31 Sci Total Environ. 2022 Mar 20; 813:152498. doi: 10.1016/j.scitotenv.2021.152498. Epub 2021 Dec 29" |
