title: Mesophilic batch anaerobic co-digestion of fruit-juice industrial waste and municipal waste sludge: process and cost-benefit analysis.
abstract: The feasibility of anaerobic co-digestion of two juice-based beverage industrial wastes, screen cake (SC) and thickened waste activated sludge (TWAS), along with municipal sludge cake (MC) was investigated. Experiments were conducted in twenty mesophilic batch 160 ml serum bottles with no inhibition occurred. The statistical analysis proved that the substrate type had statistically significant effect on both ultimate biogas and methane yields (P=0.0003<0.05). The maximum and minimum ultimate cumulative methane yields were 890.90 and 308.34 mL/g-VSremoved from the digesters containing only TWAS and SC as substrate. First-order reaction model well described VS utilization in all digesters. The first 2-day and 10-day specific biodegradation rate constants were statistically higher in the digesters containing SC (P=0.004<0.05) and MC (P=0.0005<0.05), respectively. The cost-benefit analysis showed that the capital, operating and total costs can be decreased by 21.5%, 29.8% and 27.6%, respectively using a co-digester rather than two separate digesters.
authors.affiliation: School of Engineering, The University of British Columbia, Okanagan Campus, 3333 University Way, Kelowna, BC V1V 1V7, Canada. Electronic address: ehssan.hosseini.k@gmail.com.
authors.forename: E
authors.initials: E
authors.lastname: Hosseini Koupaie
authors.affiliation: School of Engineering, The University of British Columbia, Okanagan Campus, 3333 University Way, Kelowna, BC V1V 1V7, Canada.
authors.forename: M
authors.initials: M
authors.lastname: Barrantes Leiva
authors.affiliation: School of Engineering, The University of British Columbia, Okanagan Campus, 3333 University Way, Kelowna, BC V1V 1V7, Canada.
authors.forename: C
authors.initials: C
authors.lastname: Eskicioglu
authors.affiliation: School of Engineering, The University of British Columbia, Okanagan Campus, 3333 University Way, Kelowna, BC V1V 1V7, Canada.
authors.forename: C
authors.initials: C
authors.lastname: Dutil
mesh_terms: D000693:Anaerobiosis; D061249:Batch Cell Culture Techniques / Q000191:economics* / Q000379:methods*; D001628:Beverages; D001673:Biodegradation, Environmental; D056804:Biofuels / Q000191:economics / Q000382:microbiology; D019149:Bioreactors / Q000191:economics / Q000382:microbiology; D003362:Cost-Benefit Analysis; D004867:Equipment Design; D005638:Fruit / Q000737:chemistry*; D007220:Industrial Waste; D007700:Kinetics; D008697:Methane / Q000032:analysis; D012722:Sewage / Q000737:chemistry*; D013696:Temperature; D013997:Time Factors; D014835:Volatilization
chemical_list: D056804:Biofuels; D007220:Industrial Waste; D012722:Sewage; D008697:Methane
keywords: Batch anaerobic co-digestion; Cost-benefit analysis; Fruit-juice industrial waste; Municipal waste; Process evaluation