Palm oil wastewater is starting to look less like a liability and more like a resource. In Indonesia, Palm Oil Mill Effluent, or POME, is drawing attention as a possible raw material for greener industrial solutions through microalgae.
The shift matters because the scale is enormous. Around 60% of every ton of fresh fruit bunches processed in palm oil production becomes POME, which means poor management can quickly deepen environmental pressure.
Why microalgae are gaining attention
Microalgae are microscopic organisms with a very high photosynthetic capacity. Their photosynthesis efficiency is said to be 10 to 50 times higher than that of land plants.
That advantage has made them relevant in carbon absorption discussions. Research shows that 1 kilogram of microalgae biomass can absorb about 1.83 kilograms of carbon dioxide, or CO2.
Microalgae also play a notable ecological role beyond wastewater treatment. They are estimated to produce around 50% of the oxygen on Earth, which is why they are often described as highly effective natural carbon absorbers.
| Item | Key Figure | Relevance |
|---|---|---|
| POME share | About 60% per ton of fresh fruit bunches | Shows the scale of waste to be managed |
| Photosynthesis efficiency | 10 to 50 times higher than land plants | Explains why microalgae are attractive for treatment |
| CO2 absorption | 1 kg biomass absorbs about 1.83 kg CO2 | Highlights climate-related value |
| Oxygen production | Around 50% of Earth’s oxygen | Underlines broader ecological importance |
A treatment method with economic upside
The main appeal lies in using POME as a growth medium. In this approach, wastewater that could pollute the environment becomes input for a biological process that produces more value.
Studies in Indonesia support that direction. Research from BRIN, Diponegoro University, and several publications in the Journal of Water Process Engineering show that microalgae can reduce pollutant content in POME by more than 80%.
That is significant because wastewater treatment is often treated as an added cost. In a microalgae-based model, pollutant reduction can happen alongside the formation of biomass that has economic value.
The resulting biomass does not have to end as residue. It can be processed further into biodiesel, organic fertilizer, animal feed, and even raw material for cosmetics and pharmaceuticals.
Why the idea fits the circular economy
The approach turns palm oil waste into another link in the value chain. It also aligns with the circular economy concept promoted by the United Nations Environment Programme, where waste is not simply discarded but converted into a resource that can still be used.
For the palm oil industry, this opens a different way of measuring sustainability. The question is no longer only how much is produced, but also how well pollution is reduced and value is recovered from what the process leaves behind.
Indonesia’s position as the world’s largest palm oil producer makes the opportunity especially relevant. If waste from such a large sector can be treated more cleanly, the impact could extend beyond environmental quality to the industry’s sustainability image.
Barriers remain before large-scale adoption
Despite the promise, microalgae-based POME treatment is not yet free of obstacles. Cost and production scale remain major challenges before the technology can be adopted more widely.
The cost issue stems from the fact that treatment and cultivation systems still need further development to become more efficient. Scale is equally important because laboratory results must be translated into industrial needs that operate at very large volumes.
Even so, the research direction is becoming clearer. Microalgae are no longer just a laboratory concept, because environmental benefits and economic potential now appear within the same system.
That is why the topic is drawing wider attention. In a global climate environment that demands lower emissions and cleaner production, Indonesian palm oil waste could become the starting point for innovation linking wastewater treatment, renewable energy, and the circular economy.
Future progress will depend on innovation, policy support, and cooperation between researchers and industry. If those elements strengthen, POME may move from being associated with pollution to becoming part of a greener solution with growing economic value.
