# Activated carbon: Emissions

Coconut carbon versus coal carbon on climate

Source page: https://www.materialinsights.org/chemicals/activated_carbon/emissions/

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 5.00 t CO2e per t range about 1-12 · mix of coal-based steam activation (about 6-12 t fossil CO2e per t) and coconut-based (about 1-3 t fossil, mainly fuel and power) Global emissions per year 15.0 Mt CO2e per year 2024 · 5 t/t x about 3 Mt indicative output

Per t of virgin activated carbon, cradle-to-gate (fossil CO2e; biogenic CO2 from coconut and wood excluded). Intensity: Published LCAs of activated carbon production (indicative). Global total: Derived (indicative).

#### Share of footprint by lifecycle phase
 Feedstock 20% Production / process 72% Movement 8%

#### Footprint by lifecycle phase

| Phase | Intensity | Share | Main sources of emissions | Notes | Source |
|---|---|---|---|---|---|
| **Feedstock** | about 1.0 t CO2e per t | 20% | Coal mining or charcoal making (pit charring releases methane and soot) | Coconut shells are a by-product with low allocated burden | Indicative |
| **Production / process** | about 3.6 t CO2e per t | 72% | Burning off 50-70% of the char carbon during activation, plus fuel and power | For coal this carbon is fossil; for coconut it is biogenic | Indicative |
| **Movement** | about 0.4 t CO2e per t | 8% | Container shipping from Asia to the US and Europe | Indicative | Indicative |
| **Use** | none direct | – | Adsorption | Enables removal of PFAS, mercury and VOCs | Indicative |
| **End of life** | reactivation about 1-2 t CO2e per t (indicative); incineration releases stored carbon | – | Reactivation, incineration or landfill | Reactivation avoids most virgin-carbon emissions; PFAS-laden carbon needs high-temperature treatment | Indicative |

#### Other environmental impacts

Smoke and methane from traditional pit charring of coconut shells; disposal of carbon loaded with PFAS, mercury or pesticides.

#### Levers to cut emissions

- Shift from coal to coconut and other biomass feed
- Reactivation of spent GAC instead of single use
- Clean kilns for shell charcoal instead of open pits, with heat recovery
- Use of activation off-gas for steam and power (IMARC)
- Renewable power for grinding and finishing

#### India

India's coconut-based industry has a lower fossil footprint than coal-based imports, but much shell charcoal is still made in open pits; no national emission data were found.
 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 |
|---|---|---|---|---|
| **Coconut-shell carbon with retort charcoal and waste-heat power** | about 1 t fossil CO2e per t or less (indicative) | small; retort kilns cost more than pits | used by larger Sri Lankan and Indian producers (indicative) | Indicative |
| **Reactivated GAC** | about 1-2 t CO2e per t (indicative) | usually cheaper than virgin | commercial in the US and Europe; limited in India | Indicative |

 For a climate investor PFAS and micropollutant rules are a long-run demand driver, and India's coconut carbon industry is well placed if it can secure shell charcoal and meet US and EU quality standards. Opportunities include clean retort charcoal making, reactivation services in India and the Gulf, and high-value grades for supercapacitors and gold. Haycarb, Jacobi and Indian exporters are the relevant players; the binding constraint is shell supply.

## Other sections

- [Summary](https://www.materialinsights.org/chemicals/activated_carbon/index.md)
- [Overview](https://www.materialinsights.org/chemicals/activated_carbon/overview/index.md)
- [Correlation](https://www.materialinsights.org/chemicals/activated_carbon/correlation/index.md)
- [Production route](https://www.materialinsights.org/chemicals/activated_carbon/routes/index.md)
- [Production](https://www.materialinsights.org/chemicals/activated_carbon/production/index.md)
- [Feedstocks](https://www.materialinsights.org/chemicals/activated_carbon/feedstocks/index.md)
- [Cycles](https://www.materialinsights.org/chemicals/activated_carbon/cycles/index.md)
- [Trading](https://www.materialinsights.org/chemicals/activated_carbon/trading/index.md)
- [Movement](https://www.materialinsights.org/chemicals/activated_carbon/movement/index.md)
- [Regulation](https://www.materialinsights.org/chemicals/activated_carbon/regulation/index.md)
- [Characteristics](https://www.materialinsights.org/chemicals/activated_carbon/characteristics/index.md)
- [Relationships](https://www.materialinsights.org/chemicals/activated_carbon/links/index.md)