ESTIMATES OF HYDROGEN PRODUCTION POTENTIAL AND COSTS FROM CALIFORNIA LANDFILL GAS

摘要: Methane production from California landfills is estimated using a first order decay model and actual plus predicted waste disposal amounts 1970 through 2025. Potential hydrogen assuming 67% methane (landfill gas) recovery upgrading 70% energy conversion efficiency of to (higher heating value basis) steam reformer system. Statewide landfill derived increase 2.4 3.5 billion Nm 3 y -1 between 2005 For the same period, potential was range 300 430 Gg . This equivalent 1.3 Gl gasoline (for 2005) or about 2% California's usage could fuel 1.9 million cell vehicles (FCV). The largest 15 (in terms current annual disposal) potentially produce some 0.4 500,000 FCV. cost commercial gas small systems be less than US$3.50 kg (US$29.10 GJ , lower value), not