Evaluation of Tomato-Based Packing Material for Retention of Ammonia, Nitrous Oxide, Carbon Dioxide and Methane in Gas Phase Biofilters: A Laboratory Study

Biofilters are an effective air pollution control technology to break down gaseous contaminants and produce innocuous end products. This laboratory study aimed evaluate a biofilter media, mainly composed by tomato waste, as packing material reduce NH3, N2O, CO2 CH4 losses from stored pig slurry. Three mixtures of materials, with without oxalic acid, were arranged in treatments, namely: mixture pine bark agricultural compost; waste rice husk; only. A treatment (no biofilter) was also included. The experiments conducted using system scale biofilters connected jars filled slurry under constant airflow rate. gas concentrations measured for 14 days the physicochemical materials assessed. Results showed that media had potential NH3 retention ranging 51 77% addition acid these increased 72–79%. Additionally, (29–69%) but not yet no impact on global warming potential. It can be concluded based emissions