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Effects of substrate concentration on methane potential and degradation kinetics in batch anaerobic digestion

Wang, Bing LU ; Strömberg, Sten LU ; Li, Chao LU ; Ivo Achu, Nges LU ; Nistor, Mihaela; Deng, Liangwei and Liu, Jing LU (2015) In Bioresource Technology 194. p.240-246
Abstract
In this study, two experiments were conducted to evaluate the impact of substrate concentrations on methane potential and degradation kinetics of substrate. The biochemical methane potential (BMP) tests in Experiment I were performed at a constant inoculum to substrate ratio (ISR), whereas, different ISRs were applied in Experiment II. Results obtained from Experiment I revealed that methane potential of substrate increased at a saturating trend with higher substrate concentrations, and could differ by up to 30% between the lowest and highest investigated concentrations. The results of Experiment II verified the results of Experiment I, and further showed that this trend also occurs when the substrate concentration is regulated with ISRs.... (More)
In this study, two experiments were conducted to evaluate the impact of substrate concentrations on methane potential and degradation kinetics of substrate. The biochemical methane potential (BMP) tests in Experiment I were performed at a constant inoculum to substrate ratio (ISR), whereas, different ISRs were applied in Experiment II. Results obtained from Experiment I revealed that methane potential of substrate increased at a saturating trend with higher substrate concentrations, and could differ by up to 30% between the lowest and highest investigated concentrations. The results of Experiment II verified the results of Experiment I, and further showed that this trend also occurs when the substrate concentration is regulated with ISRs. In contrast, substrate concentration had no significant impact on the degradation kinetics. It was concluded that dilutions should be avoided when the substrate concentration is lower than 10 g VS/L in order to avoid underestimations of methane potential from BMP test. (C) 2015 Elsevier Ltd. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Anaerobic digestion, Biochemical methane potential, Substrate load, Substrate concentration, Kinetics
in
Bioresource Technology
volume
194
pages
240 - 246
publisher
Elsevier
external identifiers
  • wos:000358796600030
  • pmid:26207870
  • scopus:84937811169
ISSN
1873-2976
DOI
10.1016/j.biortech.2015.07.034
language
English
LU publication?
yes
id
79665678-2418-401a-857f-f7486c491eae (old id 7767682)
date added to LUP
2015-09-02 10:01:27
date last changed
2017-09-10 04:04:25
@article{79665678-2418-401a-857f-f7486c491eae,
  abstract     = {In this study, two experiments were conducted to evaluate the impact of substrate concentrations on methane potential and degradation kinetics of substrate. The biochemical methane potential (BMP) tests in Experiment I were performed at a constant inoculum to substrate ratio (ISR), whereas, different ISRs were applied in Experiment II. Results obtained from Experiment I revealed that methane potential of substrate increased at a saturating trend with higher substrate concentrations, and could differ by up to 30% between the lowest and highest investigated concentrations. The results of Experiment II verified the results of Experiment I, and further showed that this trend also occurs when the substrate concentration is regulated with ISRs. In contrast, substrate concentration had no significant impact on the degradation kinetics. It was concluded that dilutions should be avoided when the substrate concentration is lower than 10 g VS/L in order to avoid underestimations of methane potential from BMP test. (C) 2015 Elsevier Ltd. All rights reserved.},
  author       = {Wang, Bing and Strömberg, Sten and Li, Chao and Ivo Achu, Nges and Nistor, Mihaela and Deng, Liangwei and Liu, Jing},
  issn         = {1873-2976},
  keyword      = {Anaerobic digestion,Biochemical methane potential,Substrate load,Substrate concentration,Kinetics},
  language     = {eng},
  pages        = {240--246},
  publisher    = {Elsevier},
  series       = {Bioresource Technology},
  title        = {Effects of substrate concentration on methane potential and degradation kinetics in batch anaerobic digestion},
  url          = {http://dx.doi.org/10.1016/j.biortech.2015.07.034},
  volume       = {194},
  year         = {2015},
}