The effects of pre-aeration and inoculation on solid-state anaerobic digestion of rice straw
(2017) In Bioresource Technology 224. p.78-86- Abstract
- Pre-aeration was investigated for enhancing biodegradation of recalcitrant lignocellulosic structure of rice straw under various low temperatures regimes (25, 35 and 45 °C) and aeration durations (0, 2, 4, 6 and 8 days). It was demonstrated aerated rice straw for 2 days at 35 °C resulted in highest hydrolytic efficiency and biochemical methane potential (BMP) (355.3 ± 18.7 ml CH4/gVS). Furthermore, both methane yields and initiation speeds of the solid-state anaerobic digestion (SS-AD) were inversely proportional to substrate-to-inoculum ratios due to the accumulation of volatile fatty acids (VFAs) and poor mass transfer. The highest methane yield achieved under SS-AD was 234 ml CH4/gVS at TS of 16% which 72% of the BMP. Inoculum dilution... (More)
- Pre-aeration was investigated for enhancing biodegradation of recalcitrant lignocellulosic structure of rice straw under various low temperatures regimes (25, 35 and 45 °C) and aeration durations (0, 2, 4, 6 and 8 days). It was demonstrated aerated rice straw for 2 days at 35 °C resulted in highest hydrolytic efficiency and biochemical methane potential (BMP) (355.3 ± 18.7 ml CH4/gVS). Furthermore, both methane yields and initiation speeds of the solid-state anaerobic digestion (SS-AD) were inversely proportional to substrate-to-inoculum ratios due to the accumulation of volatile fatty acids (VFAs) and poor mass transfer. The highest methane yield achieved under SS-AD was 234 ml CH4/gVS at TS of 16% which 72% of the BMP. Inoculum dilution with recycled water improved buffering capacity and mitigated accumulation of VFAs, resulting in an improved SS-AD performance. The combined pre-aeration and SS-AD was therefore established as a viable option to accelerate methane production for lignocellulosic biomass. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/95e4b0e5-5cc7-4818-8e5e-e3d3104d0582
- author
- Zhou, Ying ; LI, Chao LU ; Liu, Jing LU and Ivo Achu, Nges LU
- organization
- publishing date
- 2017
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Solid-state anaerobic digestion, Pre-aeration, Inoculum concentration, Substrate to inoculum ratio, Rice straw
- in
- Bioresource Technology
- volume
- 224
- pages
- 9 pages
- publisher
- Elsevier
- external identifiers
-
- pmid:27919545
- scopus:85006506883
- wos:000395691900010
- ISSN
- 0960-8524
- DOI
- 10.1016/j.biortech.2016.11.104
- language
- English
- LU publication?
- yes
- id
- 95e4b0e5-5cc7-4818-8e5e-e3d3104d0582
- date added to LUP
- 2016-12-06 21:41:21
- date last changed
- 2022-04-16 21:37:43
@article{95e4b0e5-5cc7-4818-8e5e-e3d3104d0582, abstract = {{Pre-aeration was investigated for enhancing biodegradation of recalcitrant lignocellulosic structure of rice straw under various low temperatures regimes (25, 35 and 45 °C) and aeration durations (0, 2, 4, 6 and 8 days). It was demonstrated aerated rice straw for 2 days at 35 °C resulted in highest hydrolytic efficiency and biochemical methane potential (BMP) (355.3 ± 18.7 ml CH4/gVS). Furthermore, both methane yields and initiation speeds of the solid-state anaerobic digestion (SS-AD) were inversely proportional to substrate-to-inoculum ratios due to the accumulation of volatile fatty acids (VFAs) and poor mass transfer. The highest methane yield achieved under SS-AD was 234 ml CH4/gVS at TS of 16% which 72% of the BMP. Inoculum dilution with recycled water improved buffering capacity and mitigated accumulation of VFAs, resulting in an improved SS-AD performance. The combined pre-aeration and SS-AD was therefore established as a viable option to accelerate methane production for lignocellulosic biomass.}}, author = {{Zhou, Ying and LI, Chao and Liu, Jing and Ivo Achu, Nges}}, issn = {{0960-8524}}, keywords = {{Solid-state anaerobic digestion; Pre-aeration; Inoculum concentration; Substrate to inoculum ratio; Rice straw}}, language = {{eng}}, pages = {{78--86}}, publisher = {{Elsevier}}, series = {{Bioresource Technology}}, title = {{The effects of pre-aeration and inoculation on solid-state anaerobic digestion of rice straw}}, url = {{http://dx.doi.org/10.1016/j.biortech.2016.11.104}}, doi = {{10.1016/j.biortech.2016.11.104}}, volume = {{224}}, year = {{2017}}, }