title: Effect of adding brewery wastewater to pulp and paper mill effluent to enhance the photofermentation process: wastewater characteristics, biohydrogen production, overall performance, and kinetic modeling.
abstract: Although a significant amount of brewery wastewater (BW) is generated during beer production, the nutrients in the BW could be reused as a potential bio-resource for biohydrogen production. Therefore, improvements in photofermentative biohydrogen production due to a combination of BW and pulp and paper mill effluent (PPME) as a mixed production medium were investigated comprehensively in this study. The experimental results showed that both the biohydrogen yield and the chemical oxygen demand removal were improved through the combination of BW and PPME. The best biohydrogen yield of 0.69 mol H2/L medium was obtained using the combination of 10 % BW + 90 % PPME (10B90P), while the reuse of the wastewater alone (100 % BW and 100 % PPME) resulted in 42.3 and 44.0 % less biohydrogen yields than the highest yield, respectively. The greatest light efficiency was 1.97 % and was also achieved using the combination of both wastewaters at 10B90P. This study revealed the potential of reusing and combining two different effluents together, in which the combination of BW and PPME improved the nutrients and light penetration into the mixed production medium.
authors.affiliation: Chemical Engineering Discipline, School of Engineering, Monash University, Jalan Lagoon Selatan, 47500, Bandar Sunway, Selangor Darul Ehsan, Malaysia.
authors.forename: Jacqueline Xiao Wen
authors.initials: JX
authors.lastname: Hay
authors.affiliation: Chemical Engineering Discipline, School of Engineering, Monash University, Jalan Lagoon Selatan, 47500, Bandar Sunway, Selangor Darul Ehsan, Malaysia. wu.ta.yeong@monash.edu.
authors.forename: Ta Yeong
authors.initials: TY
authors.lastname: Wu
authors.affiliation: Nanotechnology & Catalysis Research Centre (NANOCAT), University of Malaya, 50603, Kuala Lumpur, Malaysia.
authors.forename: Joon Ching
authors.initials: JC
authors.lastname: Juan
authors.affiliation: Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM, Bangi, Selangor Darul Ehsan, Malaysia.
authors.forename: Jamaliah
authors.initials: J
authors.lastname: Md Jahim
mesh_terms: D057919:Biological Oxygen Demand Analysis; D007220:Industrial Waste; D007700:Kinetics; D010209:Paper; D062065:Wastewater
chemical_list: D007220:Industrial Waste; D062065:Wastewater
keywords: Biohydrogen; Brewery wastewater; Pulp and paper mill effluent; Renewable energy; Rhodobacter sphaeroides; Wastewater reuse