Greenhouse Gas Emissions From Biofilters for Composting Exhaust Ammonia Removal

ABSTRACT: Emissions of odorous compounds, such as ammonia (NH3), from composting have negative agronomic and environmental impacts. A biofilter is widely used for NH3 removal, with one of its potential detrimental by-products being nitrous oxide (N2O), which is a higher warming potential greenhouse gas (GHG). The aim of the study was to evaluate the effect of empty bed retention time (EBRT) on GHG emissions from biofilters for removing NH3 from composting. Composting experimental trials lasted 6 weeks, and composting materials were mixtures of dead pigs and manure. Three groups of biofilters with 1.2 m-height, 0.3 m-inner diameter, and 1.0 m media depth were conducted with EBRT of 30, 60, and 100s, respectively. Each treatment was performed in triplicate, and the gas was monitored using the dynamic

SUBMITTER: Shang B 

PROVIDER: S-EPMC9240628 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature