Costa Rica is turning pineapple and coffee waste into syngas, then burying the carbon-rich material left behind instead of sending it back into the atmosphere
Image generated with artificial intelligenceCosta Rica is showing how to convert agricultural waste into syngas using pineapple and coffee.
Nations across the globe are under pressure to meet decarbonization targets.
Some sectors, such as agriculture, remain inherently hard to abate and continue to emit high concentrations of greenhouse gases.
Ultimately, the technology will set a global standard in transforming high-volume agricultural waste into long-term carbon sinks.
Without intervention, agriculture and the rest of the world will face more severe climate change effects.
Will the Costa Rican approach encourage transforming major pollution into long-term carbon sinks?
How agriculture remains carbon-heavy
Global decarbonization is vital in meeting strict international climate regulations.
Yet, agriculture faces structural obstacles that industrial electric grids or transportation do not.
During energy production, fossil fuels can be directly replaced with renewable energy.
In agriculture, emissions originate from biological processes spanning millions of acres.
Potent greenhouse gases such as methane and nitrous oxide are emitted during these processes.
These gases have significantly higher global warming potential than carbon dioxide.
Key contributors to this immense footprint are agricultural waste and loss.
Agrifood systems produce roughly 16.5 billion tons of carbon emissions annually. This represents almost 33% of global human-caused emissions.
Unprocessed crop and food waste account for 4.4 billion tons of carbon dioxide equivalent each year.
This results from leaving waste in fields or open dumps to decompose uncontrollably, which releases methane into the atmosphere.
Without proper management, the risk of accelerated climate change rises.
A sector facing a harmful feedback loop
Long-term global warming is driven by carbon dioxide emissions.
However, gases such as methane and nitrous oxide accelerate near-term climate impact.
Over a 20- to 100-year timescale, methane traps approximately 28 to 80 times more heat than carbon dioxide.
Nitrous oxide is even more potent, with an almost 273 times higher warming potential.
As these gases accelerate atmospheric warming, the planet’s weather patterns become destabilized.
Higher temperatures trigger varying extreme events, including prolonged droughts, heatwaves, and erratic rainfall.
Consequently, global crop yields are directly lowered and soil fertility degraded.
This creates a dire feedback loop for the world’s food security.
To maintain yields, farming practices produce more waste and need more chemical inputs.
Costa Rica is familiar with this, producing almost 8.9 million metric tons of pineapple and coffee waste annually.
That is why Poás Bioenergy created an innovative technology to convert this waste into syngas.
Producing syngas directly at the source
By converting agricultural waste into syngas, methane emissions are eliminated while two high-value products are created.
Poás Bioenergy’s technology is deployed on-site at agricultural processing facilities and farms in Costa Rica.
Transportation expenses are decreased by installing equipment directly where crop waste is produced.
The Observatory of Public Policies for Agrifood Systems highlighted the success of this initiative.
It essentially turns an environmental liability into a circular economic asset.
Heavy, high-moisture waste, such as coffee fruit pulp and pineapple crowns, is specifically targeted for the process.
A decentralized thermal conversion process
Excess water is extracted from wet residues in a pretreatment unit.
The biomass goes through an oxygen-limited gasification reactor.
The organic matter is broken down with high heat without burning it.
High-density syngas and solid biochar are produced from the reaction.
The syngas is burned on-site to replace fossil fuels for thermal processing.
The organic carbon-rich biochar is collected and buried in farm soils to boost health.
By supplying clean thermal power directly to farm processing facilities, the syngas actively lowers carbon footprints.
Additionally, smallholder farmers are enabled to participate in carbon markets. Presently, the initiative remains active and will continue through 2027.
It falls under the Carbon Positive project, paving the way for broader regional adoption.
Poás Bioenergy plans to scale its gasification technology across Latin America.
Ultimately, the technology will set a global standard in transforming high-volume agricultural waste into long-term carbon sinks.
Anke Maree is a writer with a clear and engaging editorial style. Her work focuses on making complex topics accessible, informative, and relevant for readers across different areas of interest.
