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Towards eliminating systematic errors caused by the experimental conditions in Biochemical Methane Potential (BMP) tests.

Strömberg, Sten LU ; Nistor, Mihaela and Liu, Jing LU (2014) In Waste Management 34(11). p.1939-1948
Abstract
The Biochemical Methane Potential (BMP) test is increasingly recognised as a tool for selecting and pricing biomass material for production of biogas. However, the results for the same substrate often differ between laboratories and much work to standardise such tests is still needed. In the current study, the effects from four environmental factors (i.e. ambient temperature and pressure, water vapour content and initial gas composition of the reactor headspace) on the degradation kinetics and the determined methane potential were evaluated with a 2(4) full factorial design. Four substrates, with different biodegradation profiles, were investigated and the ambient temperature was found to be the most significant contributor to errors in... (More)
The Biochemical Methane Potential (BMP) test is increasingly recognised as a tool for selecting and pricing biomass material for production of biogas. However, the results for the same substrate often differ between laboratories and much work to standardise such tests is still needed. In the current study, the effects from four environmental factors (i.e. ambient temperature and pressure, water vapour content and initial gas composition of the reactor headspace) on the degradation kinetics and the determined methane potential were evaluated with a 2(4) full factorial design. Four substrates, with different biodegradation profiles, were investigated and the ambient temperature was found to be the most significant contributor to errors in the methane potential. Concerning the kinetics of the process, the environmental factors' impact on the calculated rate constants was negligible. The impact of the environmental factors on the kinetic parameters and methane potential from performing a BMP test at different geographical locations around the world was simulated by adjusting the data according to the ambient temperature and pressure of some chosen model sites. The largest effect on the methane potential was registered from tests performed at high altitudes due to a low ambient pressure. The results from this study illustrate the importance of considering the environmental factors' influence on volumetric gas measurement in BMP tests. This is essential to achieve trustworthy and standardised results that can be used by researchers and end users from all over the world. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Waste Management
volume
34
issue
11
pages
1939 - 1948
publisher
Elsevier
external identifiers
  • pmid:25151444
  • wos:000343840800005
  • scopus:84907711718
ISSN
1879-2456
DOI
10.1016/j.wasman.2014.07.018
language
English
LU publication?
yes
id
8d82f3d8-38c2-4120-9cb3-2ebfa193b1f8 (old id 4614085)
date added to LUP
2014-09-12 16:42:57
date last changed
2017-08-27 03:25:56
@article{8d82f3d8-38c2-4120-9cb3-2ebfa193b1f8,
  abstract     = {The Biochemical Methane Potential (BMP) test is increasingly recognised as a tool for selecting and pricing biomass material for production of biogas. However, the results for the same substrate often differ between laboratories and much work to standardise such tests is still needed. In the current study, the effects from four environmental factors (i.e. ambient temperature and pressure, water vapour content and initial gas composition of the reactor headspace) on the degradation kinetics and the determined methane potential were evaluated with a 2(4) full factorial design. Four substrates, with different biodegradation profiles, were investigated and the ambient temperature was found to be the most significant contributor to errors in the methane potential. Concerning the kinetics of the process, the environmental factors' impact on the calculated rate constants was negligible. The impact of the environmental factors on the kinetic parameters and methane potential from performing a BMP test at different geographical locations around the world was simulated by adjusting the data according to the ambient temperature and pressure of some chosen model sites. The largest effect on the methane potential was registered from tests performed at high altitudes due to a low ambient pressure. The results from this study illustrate the importance of considering the environmental factors' influence on volumetric gas measurement in BMP tests. This is essential to achieve trustworthy and standardised results that can be used by researchers and end users from all over the world.},
  author       = {Strömberg, Sten and Nistor, Mihaela and Liu, Jing},
  issn         = {1879-2456},
  language     = {eng},
  number       = {11},
  pages        = {1939--1948},
  publisher    = {Elsevier},
  series       = {Waste Management},
  title        = {Towards eliminating systematic errors caused by the experimental conditions in Biochemical Methane Potential (BMP) tests.},
  url          = {http://dx.doi.org/10.1016/j.wasman.2014.07.018},
  volume       = {34},
  year         = {2014},
}