How does a puffed rice unit work out emissions from its roasting fuel?

Measure the fuel for roasting, often rice husk, firewood or LPG, over a week and divide by kilograms of puffed rice. Husk and firewood CO2 is biogenic and reported separately; LPG CO2 counts fully at 2.98 kg per kg. Add parboiling steam and electricity.

Records for a week

• Husk or firewood in kilograms, or LPG cylinders.
• Paddy or rice in and puffed rice out.
• Electricity for conveyors and packing.

Per kg

A week of careful weighing is enough to set a per-kg figure you can reuse until the process changes.

LPG roaster

• LPG 190 kg x 2.98 = 566 kg CO2 for 7,000 kg output
• 0.081 kg CO2 per kg from roasting

What Senseible does here

Senseible reads quantities, dates and units from your bills and invoices and shows the factor and source used on every line.

• Husk sold to a power plant
• LPG cylinder CO2

Sources: IPCC 2006 Guidelines, Volume 2: Energy, GHG Protocol Corporate Standard

Last reviewed 2026-10-22.