title: Energy performance of an integrated bio-and-thermal hybrid system for lignocellulosic biomass waste treatment.
abstract: Lignocellulosic biomass waste, a heterogeneous complex of biodegradables and non-biodegradables, accounts for large proportion of municipal solid waste. Due to limitation of single-stage treatment, a two-stage hybrid AD-gasification system was proposed in this work, in which AD acted as pre-treatment to convert biodegradables into biogas followed by gasification converting solid residue into syngas. Energy performance of single and two-stage systems treating 3 typical lignocellulosic wastes was studied using both experimental and numerical methods. In comparison with conventional single-stage gasification treatment, this hybrid system could significantly improve the quality of produced gas for all selected biomass wastes and show its potential in enhancing total gas energy production by a maximum value of 27% for brewer's spent grain treatment at an organic loading rate (OLR) of 3gVS/L/day. The maximum overall efficiency of the hybrid system for horticultural waste treatment was 75.2% at OLR of 11.3gVS/L/day, 5.5% higher than conventional single-stage system.
authors.affiliation: NUS Environmental Research Institute, National University of Singapore, 1 Create Way, Create Tower, #15-02, Singapore 138602, Singapore; Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117585, Singapore.
authors.forename: Xiang
authors.initials: X
authors.lastname: Kan
authors.affiliation: NUS Environmental Research Institute, National University of Singapore, 1 Create Way, Create Tower, #15-02, Singapore 138602, Singapore; Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117585, Singapore.
authors.forename: Zhiyi
authors.initials: Z
authors.lastname: Yao
authors.affiliation: NUS Environmental Research Institute, National University of Singapore, 1 Create Way, Create Tower, #15-02, Singapore 138602, Singapore.
authors.forename: Jingxin
authors.initials: J
authors.lastname: Zhang
authors.affiliation: NUS Environmental Research Institute, National University of Singapore, 1 Create Way, Create Tower, #15-02, Singapore 138602, Singapore; Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117585, Singapore.
authors.forename: Yen Wah
authors.initials: YW
authors.lastname: Tong
authors.affiliation: Department of Mechanical Engineering, Faculty of Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117576, Singapore.
authors.forename: Wenming
authors.initials: W
authors.lastname: Yang
authors.affiliation: School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200240, China.
authors.forename: Yanjun
authors.initials: Y
authors.lastname: Dai
authors.affiliation: NUS Environmental Research Institute, National University of Singapore, 1 Create Way, Create Tower, #15-02, Singapore 138602, Singapore; Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117585, Singapore. Electronic address: chewch@nus.edu.sg.
authors.forename: Chi-Hwa
authors.initials: CH
authors.lastname: Wang
mesh_terms: D000693:Anaerobiosis; D056804:Biofuels; D018533:Biomass; D005740:Gases / Q000032:analysis; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D008031:Lignin / Q000378:metabolism*; D008697:Methane / Q000096:biosynthesis; D008962:Models, Theoretical; D009930:Organic Chemicals / Q000032:analysis; D012037:Refuse Disposal / Q000379:methods*; D062611:Solid Waste / Q000032:analysis*; D013696:Temperature
chemical_list: D056804:Biofuels; D005740:Gases; D009930:Organic Chemicals; D062611:Solid Waste; C036909:lignocellulose; D008031:Lignin; D008697:Methane
keywords: Anaerobic digestion; Gasification; Hybrid system; Lignocellulosic biomass waste; Waste-to-energy