title: Optimization of process parameters for production of volatile fatty acid, biohydrogen and methane from anaerobic digestion.
abstract: The anaerobic digestion process has been primarily utilized for methane containing biogas production over the past few years. However, the digestion process could also be optimized for producing volatile fatty acids (VFAs) and biohydrogen. This is the first review article that combines the optimization approaches for all three possible products from the anaerobic digestion. In this review study, the types and configurations of the bioreactor are discussed for each type of product. This is followed by a review on optimization of common process parameters (e.g. temperature, pH, retention time and organic loading rate) separately for the production of VFA, biohydrogen and methane. This review also includes additional parameters, treatment methods or special additives that wield a significant and positive effect on production rate and these products' yield.
authors: Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NWS 2007, Australia.
authors: M A
authors: MA
authors: Khan
authors: Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NWS 2007, Australia. Electronic address: ngohuuhao121@gmail.com.
authors: H H
authors: HH
authors: Ngo
authors: Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NWS 2007, Australia.
authors: W S
authors: WS
authors: Guo
authors: Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NWS 2007, Australia.
authors: Y
authors: Y
authors: Liu
authors: Strategic Water Infrastructure Laboratory, School of Civil Mining and Environmental Engineering, University of Wollongong, Wollongong, NSW 2522, Australia.
authors: L D
authors: LD
authors: Nghiem
authors: Strategic Water Infrastructure Laboratory, School of Civil Mining and Environmental Engineering, University of Wollongong, Wollongong, NSW 2522, Australia.
authors: F I
authors: FI
authors: Hai
authors: School of Environmental and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300387, China.
authors: L J
authors: LJ
authors: Deng
authors: School of Environmental and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300387, China.
authors: J
authors: J
authors: Wang
authors: School of Environmental and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300387, China.
authors: Y
authors: Y
authors: Wu
mesh_terms: D000693:Anaerobiosis; D056804:Biofuels; D019149:Bioreactors; D001709:Biotechnology / Q000295:instrumentation / Q000379:methods*; D004867:Equipment Design; D005232:Fatty Acids, Volatile / Q000096:biosynthesis*; D006859:Hydrogen / Q000378:metabolism*; D006863:Hydrogen-Ion Concentration; D008697:Methane / Q000096:biosynthesis*; D013696:Temperature
chemical_list: D056804:Biofuels; D005232:Fatty Acids, Volatile; D006859:Hydrogen; D008697:Methane
keywords: Anaerobic; Biogas; Biohydrogen; Methane; Retention time; Volatile fatty acid