Leachate valorization in anaerobic biosystems: Towards the realization of waste-to-energy concept via biohydrogen, biogas and bioelectrochemical processes. (28th June 2019)

• Record Type: Journal Article
• Authors: Bakonyi, Péter; Dharmaraja, Jeyaprakash; Shobana, Sutha; Koók, László; Rózsenberszki, Tamás; Nemestóthy, Nándor; Banu J, Rajesh; Bélafi-Bakó, Katalin; Kumar, Gopalakrishnan
• Is Part Of: International journal of hydrogen energy. Volume 44:Number 32(2019)
• Page Start: 17278
• Page End: 17296
• Publication Date: 2019-06-28
• Subjects: Landfill leachate -- Waste-to-energy -- Biohydrogen -- Biogas -- Bioelectrochemical system -- Integrated process; AC Active carbon -- ACoD Anaerobic co–digestion -- AD Anaerobic digestion -- AOPs Advanced oxidation process -- BES Bioelectrochemical systems -- BOD Biological oxygen demand -- CAS Conventional activated sludge -- COD Chemical oxygen demand -- DF Dark fermentation -- EAB Electro–active bacteria -- EGSB Expanded granular sludge bed bioreactor -- FWL Food waste leachate -- HFE Hydrogen fermented effluent -- HPB Hydrogen producing bacteria -- HPR Hydrogen production rate -- LEMW Lipid extracted microalgae waste -- LFG Landfill gases -- LL Landfill leachate -- LLPs Leachate treatment processes -- MBR Membrane bioreactor -- MEC Microbial electrohydrogenesis or electrolysis cell -- MLSS Mixed liquor suspended solids -- MSW Municipal solid waste -- RO Reverse osmosis -- SBR Sequencing batch reactors -- TCE Trichloroethylene -- TOCs Total organic carbon contents -- UASB Upflow anaerobic sludge blanket -- VFAs Volatile fatty acids; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2019.02.028
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: Leachate generated in landfills is considered as a hazardous waste stream due to its composition and needs adequate treatment for environmental protection purposes. Nonetheless, a contemporary technology should not only be able to deal with its degradation, but at the same time, recover energy in various forms. Such valorization approaches with priority on these dual-aims are potentially those that rely on anaerobic biosystems. In the literature, processes considered on that matter include fermentative, digestive and bioelectrochemical set-ups to deliver energy-carriers such as biohydrogen (DF), biogas (AD) and electricity (BES), respectively. Moreover, to enhance the global efficiency of leachate utilization, it has been recently trending to develop integrated options by combining these systems (DF, AD, BES) into a cascade scheme. In this review, it is intended to give an insight to the research activities realized in these fields and show possible directions towards the better exploitation of leachate feedstock under anaerobic conditions. Highlights: Options for leachate valorization in anaerobic biosystems are overviewed. Treatment approaches with simultaneous energy recovery are outlined. Potential of biohydrogen, biogas and bioelectrochemical systems are discussed. Integrated applications are proposed for better process efficiency.