ENHANCEMENT OF BIOGAS GENERATION BY UTILIZING RAW AND MODIFIED WITH HNO3 BIOCHAR OBTAINED FROM PYROLYSIS OF BIOMASS AND DIGESTATE
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27710%2F23%3A10254313" target="_blank" >RIV/61989100:27710/23:10254313 - isvavai.cz</a>
Result on the web
<a href="https://digital.detritusjournal.com/articles/enhancement-of-biogas-generation-by-utilizing-raw-and-modified-with-hno3-biochar-obtained-from-pyrol/4555" target="_blank" >https://digital.detritusjournal.com/articles/enhancement-of-biogas-generation-by-utilizing-raw-and-modified-with-hno3-biochar-obtained-from-pyrol/4555</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.31025/2611-4135/2023.18313" target="_blank" >10.31025/2611-4135/2023.18313</a>
Alternative languages
Result language
angličtina
Original language name
ENHANCEMENT OF BIOGAS GENERATION BY UTILIZING RAW AND MODIFIED WITH HNO3 BIOCHAR OBTAINED FROM PYROLYSIS OF BIOMASS AND DIGESTATE
Original language description
Biomass- and digestate-derived biochars were modified with nitric acid solution and examined in biochemical methane potential (BMP) tests to determine the effect of pretreatment on each of the different materials capability to improve the biogas production from the anaerobic digestion of conventional substrates such as corn silage. Methane yields from corn silage (0.308 m3kgVS-1) were over the average value for the specific type of lignocellulosic material. Addition of digestate-derived biochar (BCD) in AD process improved the methane production 1.13-fold. However, the sawdust-derived biochar (BCS) resulted in an even greater methane release of 0.374 m3kgVS-1. Chemical treatment reduced the pH of BCs from 10.29 and 11.54 to 3.10 and 2.81 for BCS and BCD, respectively while had a significant impact on materials composition almost removing the ash and metal elements from BCS and markedly decreasing 1.43-fold the ash fraction and by 70-75 % the minerals proportion in BCD. The presence of modified digestate-derived biochar (M-BCD) in a culture led to an enhanced methane production (0.402 m3kgVS-1) indicating that the specific additive exhibited a higher potential than all BCs to promote the efficiency of AD of a biomass feedstock. M-BCD also possessed the greatest capability to lessen an inhibition caused by H2S retaining the concentration of the toxic gas at levels lower than 100 ppm. On the other hand, modified BCS provoked a 9% abatement in methane yields providing evidence that nitric acid could have a neutral or slightly negative effect on the capability of a BC to improve the AD process.
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
10400 - Chemical sciences
Result continuities
Project
<a href="/en/project/TN02000025" target="_blank" >TN02000025: National Centre for Energy II</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Detritus
ISSN
2611-4127
e-ISSN
2611-4135
Volume of the periodical
2023
Issue of the periodical within the volume
24
Country of publishing house
IT - ITALY
Number of pages
12
Pages from-to
28-39
UT code for WoS article
999
EID of the result in the Scopus database
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