Anaerobic digestion: A promising technology of utilizing radioactively contaminated plant biomass

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F86652052%3A_____%2F23%3AN0000030" target="_blank" >RIV/86652052:_____/23:N0000030 - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/abs/pii/S0265931X23001388" target="_blank" >https://www.sciencedirect.com/science/article/abs/pii/S0265931X23001388</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jenvrad.2023.107245" target="_blank" >10.1016/j.jenvrad.2023.107245</a>

Result language

angličtina

Original language name

Anaerobic digestion: A promising technology of utilizing radioactively contaminated plant biomass

Original language description

Anaerobic digestion (AD) is a widely used technology that allows for the reprocessing and reduction of waste biomass. A study was conducted to see if the AD technology might be used to process radioactively polluted agricultural biomass. For this purpose, laboratory tests were carried out with a 20-liter model biogas plant (BGP) with the radionuclide 134Cs and operational tests with the South Bohemian commercial biogas plant monitoring the radionuclide 137Cs. The activities of 134Cs in inputs, contaminated grass or maize silage and in emerging fractions were investigated in the model fermenter. The activity of 134Cs in the dry matter during the fermentation process increased by 46% on average, which corresponds to a reduction of dry matter by 43% due to the production of biogas. 137Cs activities were measured in commercial BGP maize, grass, and whole plant silage, wheat, digestate, biogas, and aerosol samples. The commercial BGP fermentation process was more efficient, with an 80% reduction in dry mass weight. Dry biomass (1.37 Bq/kg) had a 137Cs massic activity that was 4.4times lower than the activity of dry digestate mass (6.01 Bq/kg). The activity of the 137Cs in biogas aerosol was 1.1E-7 Bq/m3 or less, and the decontamination factor was 6.9E6 or greater. Most Cs remain in the digestate. No other ways of radioactivity leakage have been identified.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10511 - Environmental sciences (social aspects to be 5.7)

Project

<a href="/en/project/VI20172020098" target="_blank" >VI20172020098: Disposal of radiation-contaminated biomass after NPP accident-distribution, logistic of harvesting, exploring in biogas technol.</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2023

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Environmental Radioactivity

ISSN

0265-931X

e-ISSN

1879-1700

Volume of the periodical

268-269

Issue of the periodical within the volume

November

Country of publishing house

GB - UNITED KINGDOM

Number of pages

8

Pages from-to

107245

UT code for WoS article

001049533100001

EID of the result in the Scopus database

2-s2.0-85166197257