Trickle bed reactor (TBR) systems have emerged as particularly effective for treating biodegradable gaseous wastes, including syngas and CO . In such systems, gases flow continuously alongside a recirculating liquid through a packed column filled with biofilm carrier materials. These materials serve as the surface on which biofilms form, enabling the biodegradation of feed gases through anaerobic fermentation. Depending on the inoculation materials and the gaseous waste used, these biofilms can develop either from single microbial species in monocultures or from multiple microbial species in mixed cultures . Mixed cultures create an interdependent community capable of maintaining syntrophic relationships that optimize gas utilization . This structured synergy, coupled with the biofilm composition, is key to the high conversion efficiencies observed in TBR systems.