Bagasse (sugarcane bagasse)

Bagasse is the dry, fibrous pulp that remains after sugarcane stalks are crushed to extract their juice. A sugar mill produces large quantities of it, and rather than treat it as waste, mills burn it as a renewable biomass fuel in their boilers to generate the steam and power the mill needs — often with surplus power exported to the grid (cogeneration). India's sugar industry is a major bagasse-based power generator. The bagasse-fired boiler particulate standard is set around 500-800 mg/Nm³ corrected to 12% CO₂, depending on boiler size.

Burning bagasse is carbon-neutral in principle (the CO₂ released was recently absorbed by the growing cane) but it is a significant particulate-matter source because the light, fibrous fuel produces fly ash and unburnt fibre carryover. SO₂ is low (bagasse has little sulphur) but NOₓ and CO depend on combustion control. Bagasse ash itself is a residue that needs management or use (it has value in construction and as a silica source).

For recyclers, bagasse is a leading example of the broader principle of turning an agro-industrial residue into fuel and value — exactly the logic of the recycling and bioenergy economy. It is also directly relevant to the CBG/biogas sector: bagasse and its companion residue press mud, along with other crop residues, are feedstocks for biogas and biomass energy, and a recycler evaluating biomass feedstock will encounter bagasse availability and pricing in cane-growing regions.

The control on a bagasse boiler is conventional particulate capture — wet scrubbers, multicyclones or ESPs sized to meet the 500-800 mg/Nm³ standard — with attention to combustion completeness to limit CO and unburnt carbon. For a CBG operator, the practical relevance is feedstock: bagasse and press mud are seasonal, regionally concentrated biomass streams whose availability shapes plant siting and economics in sugar belts.