Hydrolysis treatments of fruit and vegetable waste for production of biofuel precursors

Razaghi, Ali, Karthikeyan , O. P., Hao, H.T. Nguyen, and Heimann, Kirsten (2016) Hydrolysis treatments of fruit and vegetable waste for production of biofuel precursors. Bioresource Technology, 217. pp. 100-103.

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Abstract

This study investigated hydrolysis approaches for cultivation of the oleaginous red yeast Rhodotorula glutinis for biodiesel production, whilst utilising the residual solids (RS) for biogas production. Macerated fruit and vegetable waste (FVW) (24 h–4 °C-leachate served as the control, Pcon) was hydrolysed chemically (Chem), thermally (Therm) and using a combined thermo-chemical treatment (T-Chem). All cleared hydrolysates supported growth of R. glutinis, which was nitrogen-limited. T-Chem hydrolysates yielded highest biomass, total fatty acids (TotFA) and RS-derived biogas yields, biomass TotFA failed to meet standards for fuel density and higher heating values, met by the other treatments. Even though Pcon-derived yields were slightly lower, it is recommended for FVW treatment for local biogas and biodiesel production due to energy and environmental impact considerations.

Item ID: 47368
Item Type: Article (Refereed Research - C1)
Keywords: hydrolysis; fruit and vegetable waste; Rhodotorula glutinis; biodiesel; methane
ISSN: 1873-2976
Funders: Advanced Manufacturing Cooperative Research Centre (AMCRC), MBD Energy Research and Development Program for Biological Carbon Capture and Storage
Projects and Grants: AMCRC grant no 2.3.4
Date Deposited: 20 Feb 2017 04:05
FoR Codes: 06 BIOLOGICAL SCIENCES > 0605 Microbiology > 060505 Mycology @ 50%
05 ENVIRONMENTAL SCIENCES > 0502 Environmental Science and Management > 050205 Environmental Management @ 50%
SEO Codes: 96 ENVIRONMENT > 9699 Other Environment > 969999 Environment not elsewhere classified @ 100%
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