POME for Co-firing: A Strategy to Significantly Slash Boiler Fuel Costs

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For the palm oil industry, Palm Oil Mill Effluent (POME) has been viewed for decades merely as an operational burden, requiring significant management costs in open lagoons. However, with the shift toward a green industry, POME is now recognized as “liquid gold,” capable of providing concrete energy efficiency solutions through renewable energy systems.

One of the most effective methods for extracting economic value from POME is through a co-firing system. By integrating biogas derived from POME treatment into the boiler system, companies do more than just manage waste; they actively execute a massive cost-saving strategy while simultaneously supporting sustainable agriculture.

Traditionally, Palm Oil Mill (POM) boilers rely on a combination of fiber and shell. While effective, this model faces several crucial new economic challenges:

1. High Opportunity Cost: Palm shells have high market value in the export market as biomass. Every ton of shell burned in the boiler represents a significant potential for lost revenue.

2. Calorific Value Variability: Solid fuels often have inconsistent moisture content. This leads to boiler temperature fluctuations that necessitate the use of highly expensive diesel (HSD) as a backup.

3. Emission and Fouling Issues: Incomplete combustion produces high particulate emissions and leads to scale buildup (fouling), which increases routine maintenance costs.

Co-firing Biogas-POME works by performing methane capture through an anaerobic digester unit or biodigester system (either in the form of thermophilic/mesophilic tanks or covered lagoons). Once captured, the gas is purified and injected alongside solid fuel into the boiler’s combustion chamber through a specialized burner.

Why is this strategy a game changer for corporate finances? Organics summarizes it into three key points:

• Strategic Fuel Substitution: Biogas possesses a high and stable calorific value. By substituting 15-30% of the heat requirement with biogas, mills can save thousands of tons of shells annually. These shells can then be redirected for sale to export markets, creating a significant New Revenue Stream.

• Combustion Stability and Thermal Efficiency: Unlike fiber, which can degrade in quality when wet, biogas provides a constant heat input. This assists the boiler in maintaining optimal steam pressure more rapidly, reducing downtime and increasing overall FFB (Fresh Fruit Bunch) processing productivity.

• Elimination of Diesel in Start-up Processes: Many mills still rely on diesel to ignite the initial combustion in the boiler. With an abundant supply of biogas, diesel consumption can be reduced to zero, resulting in direct savings on volatile industrial fuel costs.

Often, investments in POME treatment systems are viewed solely as a means to meet regulatory requirements. However, through the Organics Bali approach, we see this as a strategic investment. With anaerobic digester technology, companies do more than just achieve high PROPER ratings or meet RSPO/ISPO certification standards; they also unlock revenue opportunities through carbon credit schemes.

By performing methane capture—trapping a gas that is 25 times more harmful to the atmosphere than CO2—companies not only secure energy independence but also significantly improve their sustainability credentials. In the long run, mills implementing co-firing benefit from a lower production cost structure, making them far more competitive in the global market.

Adopting Waste-to-Energy technology with a focus on POME is a logical and visionary financial decision. It is about transforming what was once a high-cost waste product into profit-generating energy. At Organics Bali, we are committed to supporting this transformation—proving that a profitable future for the palm oil industry lies in our ability to repurpose what we once threw away.

Implementing this strategy is not merely a theory. This solution has proven its value in the field. For instance, Organics Bali highlights the successful POME treatment project at BGA Group.

BGA Group implemented a methane capture system integrated with their boiler unit. As a result, they proved that transitioning to renewable energy systems aligns with operational efficiency targets. This project sets a new industry standard. Companies can now process POME into a stable substitute fuel. This shift strengthens their global sustainability profile.