Renewable energy is an area of enormous growth. Global production of biogas from landfills and from biomass is expected to nearly double from 2015-2026. Biogas production is growing at such a high rate as a result of concerns stemming from depleting fossil fuel reserves, incentives from government programs and compliance with environmental laws.
The biogas treatment process begins with the feed of landfill gas from landfills and/or the feed of biomass from organic waste. Biogas feed streams are variable; therefore, process efficiency relies on monitoring the feed stream into the biogas treatment process. In many parts of the world, our trash is sent to landfills and ultimately decomposed in airtight cells underground. The bacteria that digests the waste, releases what is known as landfill gas, a varying mixture comprised largely of methane and carbon dioxide. Biomass from organic waste, is fed into an anaerobic digester, where biogas is released into the headspace of the digester. The biogas created from the landfill digestion and anaerobic digestion includes varying amounts of H
2S, which is a chemical that must be removed before the gas can be used for energy purposes.
In all biogas production facilities, there is an H2S removal system, often known as the H2S scavenger or H2S scrubber. Monitoring the levels of H2S at the inlet and outlet of the H2S scrubber is paramount for evaluating scrubber efficiency and for adhering to environmental regulations. The Applied Analytics OMA series analyzer is ideal for monitoring percent level H2S at the inlet and ppm level H2S at the outlet of the H2S scrubber in biogas production.
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