Biogas reactors temperature

AUchamis TM, et al. Heating of a biogas reactor using a solar energy system with temperature control unit. Sol Energy 2000 69(3) 239-47. 

Boe K, Karakashev D, Trably E, AngeUdaki 1 (2009) Effect of post-digestion temperature on serial CSTR biogas reactor performance. Water Res 43 669-676... 

This process has a classical on-line instrumentation gathering measurements of liquid flow rates (at the input of the reactor and in the recirculation loop), temperature and pH in the reactor and biogas flow rate and composition i.e., CO2, CH4 and H2 content in the biogas) [30]. In addition, the following sensors were installed over the years a TOC analyzer, a titrimetric sensor [3] and a FT-IR spectrometer [29]. Since 1998, this instrumentation provides us with the following on-line measurements in the liquid phase every... 

In the absence of oxygen, in a closed reactor, anaerobic bacteria ferment organic matter into methane and carbon dioxide, a mixture named biogas. Biogas is produced through the activity of common methane bacteria that cause anaerobic degradation over a broad temperature range from 10°C to over 100°C. 

Sunlight can be concentrated with mirrors and used to achieve ultra-high temperatures that are otherwise only achievable using electricity or nuclear power. The use of such renewable solar-thermal processing has significant potential in the desert southwest United States (AZ, CA, CO, NM, NV, and UT) for heating specialized chemical reactors to produce H2 from NG, biogas, or waste landfill gas. 

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