Mild chemical pretreatment of cassava pulp for enhancing high-load anaerobic digestion
Issued Date
2022-02-01
Resource Type
eISSN
2589014X
Scopus ID
2-s2.0-85120467733
Journal Title
Bioresource Technology Reports
Volume
17
Rights Holder(s)
SCOPUS
Bibliographic Citation
Bioresource Technology Reports Vol.17 (2022)
Suggested Citation
Lomwongsopon P., Aramrueang N. Mild chemical pretreatment of cassava pulp for enhancing high-load anaerobic digestion. Bioresource Technology Reports Vol.17 (2022). doi:10.1016/j.biteb.2021.100896 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/84114
Title
Mild chemical pretreatment of cassava pulp for enhancing high-load anaerobic digestion
Author(s)
Author's Affiliation
Other Contributor(s)
Abstract
Lignocellulosic components limit the potential of starch-rich cassava pulp for high-load anaerobic digestion. Mild chemical pretreatments using 0.1%–3.0% (w/v) of H2SO4, HCl, NaOH, and KOH were investigated at low temperature (30 °C) for enhancing organic solubilization and methane production. Alkalis solubilized up to 54% of the chemical oxygen demand, degraded 53% of hemicellulose, and thus increased 18–33% of methane yield. The maximum methane yield was 324 ± 5 mL/gVS achieved by 2.0% NaOH pretreatment. Modified fed-batch BMP constructively elucidated the enhancing and hindering effects of pretreatment on methane production at high organic loading. Suitable mild pretreatment is essential for developing a practical digestion process at higher organic loading rates.