The BioCNG biogas conditioning system from Unison Solutions economically converts biogas to fuel for vehicles designed for compressed natural gas (CNG). The system removes hydrogen sulfide, moisture, siloxanes, volatile organic compounds and carbon dioxide. The fuel is then routed to a CNG fueling station and compressed. The fuel meets or exceeds SAE J1616 criteria. Systems can produce up to 1,100 gasoline gallon equivalent per day. Depending on the chemistry of the biogas, the production cost is $0.65 to $1.15 per gasoline gallon equivalent. 563/585-0967; www.unisonsolutions.com.