title: A new approach for concurrently improving performance of South Korean food waste valorization and renewable energy recovery via dry anaerobic digestion under mesophilic and thermophilic conditions.
abstract: Dry semicontinuous anaerobic digestion (AD) of South Korean food waste (FW) under four solid loading rates (SLRs) (2.30-9.21kg total solids (TS)/m3day) and at a fixed TS content was compared between two digesters, one each under mesophilic and thermophilic conditions. Biogas production and organic matter reduction in both digesters followed similar trends, increasing with rising SLR. Inhibitor (intermediate products of the anaerobic fermentation process) effects on the digesters' performance were not observed under the studied conditions. In all cases tested, the digesters' best performance was achieved at the SLR of 9.21kg TS/m3day, with 74.02% and 80.98% reduction of volatile solids (VS), 0.87 and 0.90m3biogas/kg VSremoved, and 0.65 (65% CH4) and 0.73 (60.02% CH4) m3biogas/kg VSfed, under mesophilic and thermophilic conditions, respectively. Thermophilic dry AD is recommended for FW treatment in South Korea because it is more efficient and has higher energy recovery potential when compared to mesophilic dry AD.
authors.affiliation: Department for Management of Science and Technology Development & Faculty of Environment and Labour Safety, Ton Duc Thang University, Ho Chi Minh City, Viet Nam; Department of Environmental Energy & Engineering, Kyonggi University, Republic of Korea. Electronic address: nguyendinhduc@tdt.edu.vn.
authors.forename: Dinh Duc
authors.initials: DD
authors.lastname: Nguyen
authors.affiliation: Department of Environmental Energy & Engineering, Kyonggi University, Republic of Korea.
authors.forename: Jeong Seong
authors.initials: JS
authors.lastname: Yeop
authors.affiliation: Department of Environmental Energy & Engineering, Kyonggi University, Republic of Korea.
authors.forename: Jaehoon
authors.initials: J
authors.lastname: Choi
authors.affiliation: Department of Environmental Energy & Engineering, Kyonggi University, Republic of Korea.
authors.forename: Sungsu
authors.initials: S
authors.lastname: Kim
authors.affiliation: Department of Environmental Energy & Engineering, Kyonggi University, Republic of Korea. Electronic address: swchang@kyonggi.ac.kr.
authors.forename: Soon Woong
authors.initials: SW
authors.lastname: Chang
authors.affiliation: Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul 04763, South Korea.
authors.forename: Byong-Hun
authors.initials: BH
authors.lastname: Jeon
authors.affiliation: Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney (UTS), Broadway, NSW 2007, Australia.
authors.forename: Wenshan
authors.initials: W
authors.lastname: Guo
authors.affiliation: Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney (UTS), Broadway, NSW 2007, Australia. Electronic address: huuhao.ngo@uts.edu.au.
authors.forename: Huu Hao
authors.initials: HH
authors.lastname: Ngo
mesh_terms: D000693:Anaerobiosis; D056804:Biofuels; D019149:Bioreactors; D005502:Food; D012037:Refuse Disposal; D056910:Republic of Korea
chemical_list: D056804:Biofuels
keywords: Dry anaerobic digestion; Food waste; Mesophilic condition; Renewable energy recovery; Solids loading rate; Thermophilic condition