Journal article
Authors list: Janke, Leandro; Weinrich, Soeren; Leite, Athaydes F.; Straeuber, Heike; Nikolausz, Marcell; Nelles, Michael; Stinner, Walter
Publication year: 2019
Pages: 1416-1426
Journal: Renewable Energy
Volume number: 143
ISSN: 0960-1481
DOI Link: https://doi.org/10.1016/j.renene.2019.05.029
Publisher: Elsevier
Abstract:
Anaerobic digestion (AD) of sugarcane filter cake (SFC) was investigated by comparing the performance of pre-treatment methods in biochemical methane potential (BMP) tests and semi-continuous experiments. For that, SFC was pre-treated by autoclaving the substrate alone or with sodium hydroxide (NaOH). Experimental data from BMP tests were fitted to a kinetics model and further used for simulating the AD process in a continuous stirred-tank reactor (CSTR). BMP tests showed differences (p <0.05) in total methane potential (S-BMP), which have affected methane yields during simulation in a CSTR. Untreated produced 185 mL CH4 g(vs)(1), autoclaved pre-treatment 174 mL CH4 g(vs)(1) and autoclaved with NaOH pre-treatment 222 mL CH4 g(vs)(-1). Interestingly, such higher performance of autoclaved with NaOH pre-treatment was only observed at earlier stages during semi-continuous feeding experiment. At steady-state no significant differences (p > 0.05) in terms of methane yield were observed among the reactors (average of 224 mL CH4 g(vs)(1)). These results demonstrate that the benefits of pre-treatment could only be observed in BMP tests, which is likely explained by a better adaptation of the microbial community to the substrate during long term semi-continuous experiment, making SFC pre-treatment ineffective in a single-stage CSTR and under this feeding regime. (C) 2019 Elsevier Ltd. All rights reserved.
Citation Styles
Harvard Citation style: Janke, L., Weinrich, S., Leite, A., Straeuber, H., Nikolausz, M., Nelles, M., et al. (2019) Pre-treatment of filter cake for anaerobic digestion in sugarcane biorefineries: Assessment of batch versus semi-continuous experiments, Renewable Energy, 143, pp. 1416-1426. https://doi.org/10.1016/j.renene.2019.05.029
APA Citation style: Janke, L., Weinrich, S., Leite, A., Straeuber, H., Nikolausz, M., Nelles, M., & Stinner, W. (2019). Pre-treatment of filter cake for anaerobic digestion in sugarcane biorefineries: Assessment of batch versus semi-continuous experiments. Renewable Energy. 143, 1416-1426. https://doi.org/10.1016/j.renene.2019.05.029
Keywords
BIOGAS PRODUCTION; Biomass conversion; BY-PRODUCTS; Degradation kinetics; feeding regime; Methane potential; MUNICIPAL SOLID-WASTE; PROCESS PERFORMANCE
