Izvorni znanstveni članak
https://doi.org/10.15255/CABEQ.2021.2009
Adsorption of γ-Valerolactone: An Alternative for Solvent Recovery after Conversion of Lignocellulosic Biomass to Fermentable Sugars
L. G. Coelho
; Chemical Engineering Course, Western State University of Paraná, Rua da Faculdade, 645, CEP 85903-000 Toledo, PR, Brazil
G. Johann
; Bioprocess Engineering and Biotechnology Course, Federal Technological University of Paraná, Estrada para Boa Esperança, Km 04, CEP 85660-000, Dois Vizinhos, PR, Brazil
F. Palú
; Chemical Engineering Course, Western State University of Paraná, Rua da Faculdade, 645, CEP 85903-000 Toledo, PR, Brazil
M. G. A. Vieira
; School of Chemical Engineering, State University of Campinas, Av. Albert Einstein, 500, CEP 13083-852, Campinas, SP, Brazil
R. Guirardello
; School of Chemical Engineering, State University of Campinas, Av. Albert Einstein, 500, CEP 13083-852, Campinas, SP, Brazil
V. N. Trindade-Júnior
; Federal University of Maranhão, DEQ, Av. dos Portugueses, 1966, Cidade Universitária Dom Delgado, CEP 65076-000, Sao Luis, MA Brazil
E. A. Silva
; Chemical Engineering Course, Western State University of Paraná, Rua da Faculdade, 645, CEP 85903-000 Toledo, PR, Brazil
Sažetak
The γ-valerolactone is an effective solvent in solubilizing lignocellulosic biomass fractions, although it inhibits microbial activity. To avoid the negative effects on the metabolism of microorganisms, even small quantities of γ-valerolactone need to be removed. This study examined the adsorption of γ-valerolactone on the commercial resin. The removal efficiency, adsorption equilibrium, pH effects, and fixed-bed column conditions were investigated. The highest removal efficiency of γ-valerolactone from sugar solution was 39.92 %, with 413.78 mg g−1 γ-valerolactone adsorption capacity, observed with commercial resin Dowex Optipore L-493 and pH 4.00. Dual-site Langmuir adsorption isotherm was found to be the best-fitting model for describing the adsorption mechanisms of γ-valerolactone on commercial resin. Thus, this study shows that γ-valerolactone could be removed from sugar solution by adsorption on commercial resin. In addition, the process is a viable alternative for the recovery of solvent and keeping the microbial activity in lignocellulosic biomass fractions.
This work is licensed under a Creative Commons Attribution 4.0 International License.
Ključne riječi
commercial resin; separation; kinetic; equilibrium; batch; fixed-bed
Hrčak ID:
280940
URI
Datum izdavanja:
26.7.2022.
Posjeta: 401 *