title: Hydrolysis of biomass using a reusable solid carbon acid catalyst and fermentation of the catalytic hydrolysate to ethanol.
abstract: Solid acid catalysts can hydrolyze cellulose with lower reaction times and are easy to recover and reuse. A glycerol based carbon acid catalyst developed at CSIR-IICT performed well in acid catalysis reactions and hence this study was undertaken to evaluate the catalyst for hydrolysis of biomass (alkali pretreated or native rice straw). The catalyst could release 262 mg/g total reducing sugars (TRS) in 4h at 140 °C from alkali pretreated rice straw, and more importantly it released 147 mg/g TRS from native biomass. Reusability of the catalyst was also demonstrated. Catalytic hydrolysate was used as sugar source for fermentation to produce ethanol. Results indicate the solid acid catalyst as an interesting option for biomass hydrolysis.
authors.affiliation: Centre for Biofuels, Biotechnology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram 695 019, India.
authors.forename: Mandavi
authors.initials: M
authors.lastname: Goswami
authors.affiliation: Centre for Biofuels, Biotechnology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram 695 019, India.
authors.forename: S
authors.initials: S
authors.lastname: Meena
authors.affiliation: Centre for Lipid Research, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India.
authors.forename: S
authors.initials: S
authors.lastname: Navatha
authors.affiliation: Centre for Lipid Research, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India.
authors.forename: K N
authors.initials: KN
authors.lastname: Prasanna Rani
authors.affiliation: Centre for Biofuels, Biotechnology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram 695 019, India.
authors.forename: Ashok
authors.initials: A
authors.lastname: Pandey
authors.affiliation: Centre for Biofuels, Biotechnology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram 695 019, India.
authors.forename: Rajeev Kumar
authors.initials: RK
authors.lastname: Sukumaran
authors.affiliation: Centre for Lipid Research, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India.
authors.forename: R B N
authors.initials: RB
authors.lastname: Prasad
authors.affiliation: Centre for Lipid Research, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India. Electronic address: prabhavathi@iict.res.in.
authors.forename: B L A
authors.initials: BL
authors.lastname: Prabhavathi Devi
mesh_terms: D018533:Biomass; D001709:Biotechnology / Q000379:methods*; D002241:Carbohydrates / Q000737:chemistry; D002244:Carbon / Q000737:chemistry*; D002384:Catalysis; D000431:Ethanol / Q000737:chemistry*; D005285:Fermentation; D005990:Glycerol / Q000737:chemistry; D006868:Hydrolysis; D012275:Oryza; D012441:Saccharomyces cerevisiae / Q000201:enzymology; D013696:Temperature
chemical_list: D002241:Carbohydrates; D000431:Ethanol; D002244:Carbon; D005990:Glycerol
keywords: Bioethanol; Catalytic hydrolysis; Enzymatic hydrolysis; Fermentation; Solid acid catalyst