title: Performance of semi-continuous membrane bioreactor in biogas production from toxic feedstock containing D-Limonene.
abstract: A novel membrane bioreactor configuration containing both free and encased cells in a single reactor was proposed in this work. The reactor consisted of 120g/L of free cells and 120g/L of encased cells in a polyvinylidene fluoride membrane. Microcrystalline cellulose (Avicel) and d-Limonene were used as the models of substrate and inhibitor for biogas production, respectively. Different concentrations of d-Limonene i.e., 1, 5, and 10g/L were tested, and an experiment without the addition of d-Limonene was prepared as control. The digestion was performed in a semi-continuous thermophilic reactor for 75 days. The result showed that daily methane production in the reactor with the addition of 1g/L d-Limonene was similar to that of control. A lag phase was observed in the presence of 5g/L d-Limonene; however, after 10 days, the methane production increased and reached a similar production to that of the control after 15 days.
authors.affiliation: Swedish Centre for Resource Recovery, University of Borås, Borås, Sweden. Electronic address: rachma.wikandari@hb.se.
authors.forename: Rachma
authors.initials: R
authors.lastname: Wikandari
authors.affiliation: Swedish Centre for Resource Recovery, University of Borås, Borås, Sweden.
authors.forename: Supansa
authors.initials: S
authors.lastname: Youngsukkasem
authors.affiliation: Department of Food and Agricultural Product Technology, Gadjah Mada University, Yogyakarta, Indonesia.
authors.forename: Ria
authors.initials: R
authors.lastname: Millati
authors.affiliation: Swedish Centre for Resource Recovery, University of Borås, Borås, Sweden.
authors.forename: Mohammad J
authors.initials: MJ
authors.lastname: Taherzadeh
mesh_terms: D000693:Anaerobiosis; D056804:Biofuels; D019149:Bioreactors; D002849:Chromatography, Gas; D002851:Chromatography, High Pressure Liquid; D053138:Cyclohexenes / Q000494:pharmacology*; D004305:Dose-Response Relationship, Drug; D000077222:Limonene; D008567:Membranes, Artificial; D008697:Methane / Q000096:biosynthesis*; D013729:Terpenes / Q000494:pharmacology*; D013997:Time Factors
chemical_list: D056804:Biofuels; D053138:Cyclohexenes; D008567:Membranes, Artificial; D013729:Terpenes; D000077222:Limonene; D008697:Methane
keywords: Biogas; Encapsulation; Membrane bioreactor; Semi continuous; d-Limonene