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Brazil’s Cegas promoting biogas route to green H2

  • Market: Biofuels, Hydrogen, Natural gas
  • 31/08/21

Brazilian gas distributor Cegas is working to supply biomethane to an emerging green hydrogen hub at Pecem in the northeastern state of Ceara.

Cegas already distributes 90,000 m3/d of biomethane in the state, equivalent to 15pc of total state gas demand. The biogas is produced by local renewable energy company GNR Fortaleza at a landfill in Caucaia near the state capital Fortaleza.

Cegas is now working to supply biomethane to Pecem port, which has become a magnet for fledgling green hydrogen projects in Brazil. The company estimates it can produce 1kg of green hydrogen from 4-5m3 of biomethane.

Pecem has so far attracted total investment commitments of over $18bn for projects spearheaded by French renewables firm Qair and Australian companies Enegix Energy and Fortescue Future Industries (FFI). All three companies plan to use electrolysis fueled by renewable power to produce green hydrogen.

In contrast, Cegas is seeking to produce green hydrogen from biomethane. Advocates of this approach say that it is more cost effective, because it substitutes natural gas with biogas in existing industrial infrastructure, transforming grey hydrogen production into green without significant new investment.

Cegas is currently negotiating with companies that produce grey hydrogen to use biomethane to test green hydrogen production methods and is also conducting studies to determine the technical specifications needed to distribute hydrogen by pipeline.

The state is currently mapping out its biogas production potential. Unlike biogas production in Brazil's southeastern region, which is dominated by the sugarcane industry, Cegas is exploring other sources, including landfills and agricultural waste.

Brazil's biogas association Abiogas estimates Brazil has the potential to produce 20,000 t/d of green hydrogen from biomethane or 7mn t/yr.


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