Dairy Manure Co-composting with Wood Biochar Plays a Critical Role in Meeting Global Methane Goals.

ABSTRACT: Livestock are the largest source of anthropogenic methane (CH₄) emissions, and in intensive dairy systems, manure management can contribute half of livestock CH₄. Recent policies such as California's short-lived climate pollutant reduction law (SB 1383) and the Global Methane Pledge call for cuts to livestock CH₄ by 2030. However, investments in CH₄ reduction strategies are primarily aimed at liquid dairy manure, whereas stockpiled solids remain a large source of CH₄. Here, we measure the CH₄ and net greenhouse gas reduction potential of dairy manure biochar-composting, a novel manure management strategy, through a composting experiment and life-cycle analysis. We found that biochar-composting reduces CH₄ by 79%,

SUBMITTER: Harrison BP 

PROVIDER: S-EPMC9352309 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature