Publication: Effect of partial ozonation and thermal pretreatment on biogas production from palm oil decanter cake
1
Issued Date
2017-01-01
Resource Type
ISSN
22839216
Other identifier(s)
2-s2.0-85021681173
Rights
Mahidol University
Rights Holder(s)
SCOPUS
Bibliographic Citation
Chemical Engineering Transactions. Vol.57, (2017), 1987-1992
Suggested Citation
Chonticha Rongwang, Supawadee Polprasert, Suwimon Kanchanasuta Effect of partial ozonation and thermal pretreatment on biogas production from palm oil decanter cake. Chemical Engineering Transactions. Vol.57, (2017), 1987-1992. doi:10.3303/CET1757332 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/42118
Research Projects
Organizational Units
Authors
Journal Issue
Thesis
Title
Effect of partial ozonation and thermal pretreatment on biogas production from palm oil decanter cake
Other Contributor(s)
Abstract
© Copyright 2017, AIDIC Servizi S.r.l. In the present work, the effect of partial ozonation and thermal pretreatment on the CH4 production by the anaerobic digestion of palm oil decanter cake was studied. Decanter cake is an attractive feedstock because of high biodegradable organic contents (50 and 31 %ww-1cellulose and hemicellulose). Partial ozonation with 250 mg/hr O3loading for 20 and 60 minutes increased total sugar releasing and finally improved the performance of anaerobic fermentation based on the CH4yield and maximum biogas production potential (P). Xylose was the main pentose sugar hydrolyzed on hemicellulose structure for the partial ozonation pretreatment. Thermal pretreatment achieved higher total sugar releasing compared with the partial ozonation pretreatment for most cases. Besides, thermal pretreatment displayed strong effect on short lag time (1.8 d) for microbial adaptation in the fermentation system compared with ozonation pretreatment and nonpretreatment (2.6 and 4.3 d). However, the maximum methane yield (581 mL CH4/g TSadded) and energy recovery (2.9 kJ) were obtained from the partial ozonation pretreatment for 60 min. Similarly, the maximum waste reduction based on TS removal was about 33% observed from the partial ozonation pretreatment for 60 min. Therefore, to improve the biogas production in overall process and enhance the waste utilization, integrating ozonation pretreatment with two stage fermentation would be suggested.