Case Studies

PT Holcim Indonesia: Co-processing Municipal Waste

PT Holcim Indonesia: Co-processing Municipal Waste

Geocycle provides a solution to waste management in Jakarta by co-processing non-recyclable sorted municipal waste in Holcim Indonesia's cement kilns.

Around 6,000 tonnes of municipal waste are produced in Jakarta every day. Geocycle's objective is to co-process a portion of this non valuable sorted waste: thereby contributing to lower carbon emissions (inorganic waste is traditionally burnt), providing a waste disposal solution for the city, lengthening the life of local landfills, and reducing the consumption of fossil fuels in the cement kilns.

In late 2007, Geocycle teamed with the PT Wira Gulfindo waste facility in north Jakarta to run a pilot project. PT Wira Gulfindo typically receives up to 1,000 tonnes of solid municipal waste every day. This waste is fed into a rotating separator machine which separates organic from inorganic waste. Scavengers then sort through the inorganic waste (approximately 300 tonnes in every 1,000) and collect usable or valuable plastic and scraps. Compostable waste is processed to become fertiliser. The remainder is compacted, plastic-wrapped, and transported to Geocycle in Narogong. Since January 2008, Geocycle has been receiving around 20 tonnes of sorted municipal waste every weekday.

The non-value inorganic waste received by Geocycle is typically low quality plastics and paper. It contains no heavy metals, no impurities, and will not decompose naturally - it therefore makes an ideal alternative fuel.

In 2008, 7,700 tonnes of sorted municipal waste were safely co-processed in Holcim Indonesia kilns: benefitting Holcim in terms of reducing fossil fuel consumption; the local environment in terms of reduced emissions of greenhouse gases, and the municipality in terms of reduced matter for landfills.

Geocycle Indonesia is a business unit and integral part of Holcim Indonesia, focusing on providing waste management solutions for customers. Energy and mineral components in waste are recovered by co-processing it in our cement kilns. Co-processing waste is an environmental friendly solution to waste problems.