The new strategy of using humic acid loaded biochar to enhance the anaerobic digestion of cow manure for methane production

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41330%2F23%3A97290" target="_blank" >RIV/60460709:41330/23:97290 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1016/j.jclepro.2023.139353" target="_blank" >http://dx.doi.org/10.1016/j.jclepro.2023.139353</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jclepro.2023.139353" target="_blank" >10.1016/j.jclepro.2023.139353</a>

Result language

angličtina

Original language name

The new strategy of using humic acid loaded biochar to enhance the anaerobic digestion of cow manure for methane production

Original language description

Anaerobic digestion is a beneficial way to convert organic waste resources, such as cow manure, into clean energy through microbial actions. However, when biochar was used as an additive to promote the efficiency of anaerobic digestion, there was a problem that the number of oxygen-containing functional groups was small, resulting in a limited effect on improving the electronic transport efficiency of the anaerobic digestion system. In this study, a high oxygen functional group containing humic acid biochar was prepared using ball milling technology to enhance reactivity and improve the anaerobic digestion performance of cow manure. The results showed that humic acid biochar had a more excellent performance in improving the gas production efficiency of cow manure AD. The addition of humic acid biochar did not significantly affect methane content. The humic acid biochar with a milling time of 8 h showed the best promotion effect in the anaerobic digestion system, and the methane yield reached 110.49 mL/gVS, which was 43.16% higher than that of the control group. The addition of humic acid biochar stimulated the secretion of extracellular polymers and enhanced interspecific electron transfer, leading to increased activity of key enzymes, including coenzyme F420. As a result, hydrogen-producing methanogens were enriched, methanogenic pathways were enhanced, and methane production was ultimately increased. Therefore, it improves intermediate product yield and utilization efficiency, thereby increasing methane production, and has great potential in the treatment of refractory organic waste.

Czech name

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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

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OECD FORD branch

20701 - Environmental and geological engineering, geotechnics

Project

—

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2023

Confidentiality

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

Name of the periodical

JOURNAL OF CLEANER PRODUCTION

ISSN

0959-6526

e-ISSN

0959-6526

Volume of the periodical

428

Issue of the periodical within the volume

2023

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

12

Pages from-to

1-12

UT code for WoS article

001105959900001

EID of the result in the Scopus database

2-s2.0-85174625597