Surfactants: Emissions
Why palm on peat can make a green surfactant dirty
What this tab covers The greenhouse-gas footprint per tonne, split by lifecycle phase (feedstock, production, movement, use, end of life), the global total, other environmental impacts, levers and low-carbon routes, India's position, and where the investment opportunity lies. Emission intensity 2.50 t CO2e per t range about -1.5 to 17 (oleo, by land use); about 1.8-3.5 (petro) · LAS about 1.8 t (derived from LAB 1.9 t per t x 0.74 plus sulphonation); petro fatty alcohol about 2.97 t and palm-kernel fatty alcohol about 5.27 t per t (wide land-use range); EO and processing added for ethoxylates Global emissions per year 45.0 Mt CO2e per year 2024 · 2.5 t x about 18 Mt (indicative)Per t of surfactant (100% active), cradle-to-gate. Intensity: Shah et al., Journal of Surfactants and Detergents 19(6), 2016; lab tile; weighting indicative. Global total: derived (indicative).
Share of footprint by lifecycle phase
Feedstock 80% Production / process 14% Movement 6%Footprint by lifecycle phase
| Phase | Intensity | Share | Main sources of emissions | Notes | Source |
|---|---|---|---|---|---|
| Feedstock | about 2.0 t CO2e per t | 80% | LAB, petro or palm-kernel fatty alcohols (with land-use change), EO | palm on peat can push fatty alcohol to about 16.7 kg CO2e per kg; on existing cropland about -1.5 (Shah et al. 2016) | Shah et al. 2016; lab tile |
| Production / process | about 0.35 t CO2e per t | 14% | SO3 generation, ethoxylation, drying of powders and needles | sulphur burning to SO3 releases heat that can be recovered | indicative |
| Movement | about 0.15 t CO2e per t | 6% | tanker and container shipping of feeds and pastes | indicative | |
| Use | about 2.5-3.2 t CO2 per t for fossil-carbon surfactants on biodegradation (stoichiometric); biogenic for oleo carbon | – | biodegradation in sewage plants and rivers; hot-water washing energy is much larger | LAS releases about 3.2 t CO2 per t LAB as it biodegrades (lab tile); cold-wash-capable surfactants cut household energy use | lab tile; stoichiometry (indicative) |
| End of life | included in use | – | biodegradation; residues in sludge | untreated grey water in India and Africa carries surfactants into rivers, causing foam and aquatic toxicity | indicative |
Other environmental impacts
Deforestation and peat loss for palm kernel oil; aquatic toxicity where sewage is untreated; 1,4-dioxane; EO safety at ethoxylation plants; nonylphenol endocrine effects.
Levers to cut emissions
- Certified deforestation-free palm and coconut feed (RSPO, EUDR traceability)
- Bio-based or bio-attributed EO and LAB (e.g. EO from bio-ethanol)
- Compact, cold-wash detergents that cut use-phase energy
- Biosurfactants by fermentation
- Renewable heat and power at sulphonation and ethoxylation plants
India
No national surfactant footprint is published; India depends on imported palm kernel oil and Gulf LAB, and its untreated sewage means much surfactant reaches rivers (indicative).
Emission figures are indicative global averages from the life-cycle studies named; actual footprints vary widely by site, energy mix and method.Low-carbon routes
| Route | Intensity | Cost premium | Status | Source |
|---|---|---|---|---|
| Palm-kernel fatty alcohol from existing cropland with mill methane capture | about -1.5 kg CO2e per kg fatty alcohol | certified supply premium (not published here) | achievable with RSPO-type supply chains | Shah et al. 2016 |
| Ethoxylates from bio-ethanol-derived EO | not published | not published | commercial in India at India Glycols (indicative) | indicative |
| Rhamnolipid and sophorolipid biosurfactants | not published | several times LAS (indicative) | first commercial plants in Europe (indicative) | indicative |