PT Holcim Indonesia: Co-processing ODS gases.

PT Holcim Indonesia: Co-processing ODS gases

Geocycle Indonesia operates Southeast Asia's first facility for the destruction of ozone depleting substances (ODS). For over a year, the facility has been serving customers who care about CFC emissions and environmental impact.

Ozone depletion in the stratosphere over the past 30 years is attributed to CFCs used in air conditioners, aerosols, and refrigerants. Following the Montreal Protocol in 1987, participating countries began to progressively phase out CFCs - however, CFCs can have a lifetime of up to 100 years - continuing to damage the ozone layer long after production has ceased. The absolute solution is to eliminate CFCs altogether in the safe environment of an approved facility.

In addition, Geocycle aim to raise local awareness of the dangers of releasing ODS gases into the atmosphere through a series of seminars and workshops.

Discussions with the Indonesian and Japanese Ministries of Environment began in 2005; prior to that, the only ODS disposal option available to waste producers in the region was expensive: exporting to Australia, with the associated high costs of insurance, destruction, and transportation.

Having signed a memorandum of understanding in May 2006, the three parties assessed the recommendations of the United Nations Environment Programme TEAP 1 report and agreed to install an ODS facility at the Narogong-2 cement kiln in west Java. Modifications to the plant had three winning advantages: the costs involved were relatively small, the modification yielded a large destruction capacity, and the facility could be used on demand.

Engineering work on the ODS facility began in October 2006, supported by technical experts from Sumitomo Osaka Cement in Japan. The work was completed in February 2007. The Indonesian Ministry of Environment issued a trial permit, and a series of emissions tests followed. In August 2007 the facility was granted a permanent permit and a ministerial decree for ODS destruction. Today Geocycle operates a world-class ODS destruction facility, serving Indonesian customers concerned about their environmental impact.

Education has been key in 2008. Geocycle Indonesia has participated in 15 seminars and workshops since the ODS facility opened, informing potential customers who were unaware of the facility, and raising awareness of environmental hazards, available solutions, and best management practices.

CFC chains crack at around 900 to 1,000 degrees Celsius. In a kiln at 1,500 degrees Celsius with gas temperatures of up to 2,000 degrees, CFCs decompose quickly and completely. The gases decompose into hydrochloric and hydrofluoric acids that are neutralized with alkaline calcium and go into nontoxic and harmless clinker material.

Co-processing ODS does not affect the normal operating conditions of the kiln.

Since the facility opened, 9,600 kilograms of ODS has been destroyed - equivalent to the global warming potential of 44,313 tonnes of CO2.

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.

1 Technology and Economic Assessment Panel