Online Siloxanes Analysis in Biogas and Landfill

Siloxanes Analysis

Online Siloxanes Analysis in Biogas and Landfill

Protea can offer online siloxanes analysis using our atmosFIR gas analysers. This allows the real time measurement of siloxanes on plant. We can offer portable siloxanes analysers or fixed siloxane measurement systems.

Protea’s has rental analysers allowing for short-term measurement of siloxanes campaigns. This can provide a cost-effect method of siloxanes analysis over inaccurate manual methods.

The generation of electricity from municipal digesters and land fill is of increasing interest, as the biogas can allow for a form of renewable energy. Organosilicon compounds often find their way into land-fill or digester gases as siloxanes. Siloxanes are low-level hazards to the atmosphere in terms of their emissions, however when they are combusted in gas engines the hard silica that is produced is very harsh to the moving parts of the gas engine.

The full spectrum technique of FTIR also allows for the measurement of the main gas components, CH4, CO2, NH3 as well. The siloxanes present can vary from different sites, but Protea has a thorough list of analytes, including straight and cyclic siloxane compounds, and we can report individual, speciated siloxanes as well as a Total Siloxane result.

Rent a siloxanes analyser and start make siloxanes measurements today...

Siloxanes Analysis
Siloxanes Analysis
Siloxane Full Name Component Boiling Point / oC Mol. Wt.
Pentamethyldisiloxane PMDS 86 148.35
Hexamethyldisiloxane L2 101 162.38
Hexamethylcyclotrisiloxane D3 134 222.46
Octamethyltrisiloxane L3 153 236.53
Ocatmethylcylclotetrasiloxane D4 175-176 296.62
Decamethyltetrasiloxane L4 194 310.69
Decamethylcyclopentasiloxane D5 211 370.77
Dodecamethylpentasiloxane L5 230 384.84
Dodecamethylcyclohexasiloxane D6 245 444.93
Trimethylsilanol TMS 98-99 90.12
Methane CH4 Background Gas 16.04
Carbon Dioxide CO2 44.01
Hydrogen Sulphide H2S 34.08
Ammonia NH3 17.03
Lower Detectable Limits (LDL) for siloxanes
Species PMDS L2 D3 L3 D4 L4
LDL/ppm 0.0041 0.0215 0.0145 0.0033 0.0144 0.0029
Species D5 L5 D6 TMS    
LDL/ppm 0.0036 0.0291 0.0036 0.691    

Find out more about atmosFIR here.

Siloxanes Analysis Brochure

Analysis Brochure

Solving the Siloxane Measurement Problem

Solving the Siloxane Measurement Problem

Protea Enquiries

Contact Protea to discuss how we can help you with your specific monitoring application and all other enquiries. We would love to hear from you and will respond as soon as we can.