Revamping Waste with a Composting-Biofiltration Technique

Composting is a smart way to recycle waste, but it often loses nitrogen, which is bad for the process. Biofiltration, a new method, can catch and change gaseous emissions into something useful. A recent study looked into how well a system that combines composting and biofiltration could keep nitrogen in distilled grain waste (DGW) compost. They used pre-composted DGW as the biofilter material. The results? The combined system lost less nitrogen (24. 9%) compared to just composting alone (40. 1%). Plus, it was really good at removing ammonia (NH3) with an efficiency of 94. 7%-97. 7%. The biofilter converted NH3 into nitrate (NO3-) and helped form organic nitrogen. This was all thanks to certain bacteria like Chryseolinea, Anseongella, and Bacillus. They found that the process mainly kept nitrogen by turning it into NO3- and organic nitrogen. This gives us a better understanding of how to make composting more efficient and improve compost quality.