Biogas production from sugarcane waste: assessment on kinetic challenges for process designing

Janke, Leandro and Leite, Athaydes and Nikolausz, Marcell and Schmidt, Thomas and Liebetrau, Jan and Nelles, Michael and Stinner, Walter (2015) Biogas production from sugarcane waste: assessment on kinetic challenges for process designing. International Journal of Molecular Sciences, 16 (9). pp. 20685-20703.

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Abstract

Biogas production from sugarcane waste has large potential for energy generation, however, to enable the optimization of the anaerobic digestion (AD) process each substrate characteristic should be carefully evaluated. In this study, the kinetic challenges for biogas production from different types of sugarcane waste were assessed. Samples of vinasse, filter cake, bagasse, and straw were analyzed in terms of total and volatile solids, chemical oxygen demand, macronutrients, trace elements, and nutritional
value. Biochemical methane potential assays were performed to evaluate the energy potential of the substrates according to different types of sugarcane plants. Methane yields varied considerably (5–181 Nm3·tonFM−1), mainly due to the different substrate characteristics and sugar and/or ethanol production processes. Therefore, for the optimization of AD on a large-scale, continuous stirred-tank reactor with long hydraulic retention times (>35 days) should be used for biogas production from bagasse and
straw, coupled with pre-treatment process to enhance the degradation of the fibrous carbohydrates. Biomass immobilization systems are recommended in case vinasse is used as substrate, due to its low solid content, while filter cake could complement the biogas production from vinasse during the sugarcane offseason, providing a higher utilization of the biogas system during the entire year.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Published version made available under open access.
Faculty / Department / School: No Faculty
Date Deposited: 24 May 2017 05:49
Last Modified: 13 Dec 2017 00:04
Uncontrolled Keywords: sugarcane waste; nutritional requirements; methane potential; degradation rates; process designing
Fields of Research : 09 Engineering > 0907 Environmental Engineering > 090703 Environmental Technologies
Identification Number or DOI: 10.3390/ijms160920685
URI: http://eprints.usq.edu.au/id/eprint/32448

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