Life cycle assessment of the mesophilic, thermophilic, and temperature-phased anaerobic digestion of sewage sludge
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22320%2F20%3A43920416" target="_blank" >RIV/60461373:22320/20:43920416 - isvavai.cz</a>
Result on the web
<a href="https://www.mdpi.com/2073-4441/12/11/3140" target="_blank" >https://www.mdpi.com/2073-4441/12/11/3140</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/w12113140" target="_blank" >10.3390/w12113140</a>
Alternative languages
Result language
angličtina
Original language name
Life cycle assessment of the mesophilic, thermophilic, and temperature-phased anaerobic digestion of sewage sludge
Original language description
In this study the environmental impact of the anaerobic digestion (AD) of sewage sludge within an activated sludge wastewater treatment plant (WWTP) was investigated. Three alternative AD systems (mesophilic, thermophilic, and temperature-phased anaerobic digestion (TPAD)) were compared to determine which system may have the best environmental performance. Two life cycle assessments (LCA) were performed considering: (i) the whole WWTP (for a functional unit (FU) of 1 m3 of treated wastewater), and (ii) the sludge line (SL) alone (for FU of 1 m3 of produced methane). The data for the LCA were obtained from previous laboratory experimental work in combination with full-scale WWTP and literature. According to the results, the WWTP with TPAD outperforms those with mesophilic and thermophilic AD in most analyzed impact categories (i.e., Human toxicity, Ionizing radiation, Metal and Fossil depletion, Agricultural land occupation, Terrestrial acidification, Freshwater eutrophication, and Ozone depletion), except for Climate change where the WWTP with mesophilic AD performed better than with TPAD by 7%. In the case of the SL alone, the production of heat and electricity (here accounted for as avoided environmental impacts) led to credits in most of the analyzed impact categories except for Human toxicity where credits did not balance out the impacts caused by the wastewater treatment system. The best AD alternative was thermophilic concerning all environmental impact categories, besides Climate change and Human toxicity. Differences between both LCA results may be attributed to the FU. © 2020 by the authors. Licensee MDPI, Basel, Switzerland.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20801 - Environmental biotechnology
Result continuities
Project
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Continuities
R - Projekt Ramcoveho programu EK
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Water
ISSN
2073-4441
e-ISSN
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Volume of the periodical
12
Issue of the periodical within the volume
11
Country of publishing house
CH - SWITZERLAND
Number of pages
20
Pages from-to
1-20
UT code for WoS article
000594171700001
EID of the result in the Scopus database
2-s2.0-85096358873