Over the lifespan of the project, CO2 emissions in the clay brick sector have been reduced by 380,000 tCO2 annually.
Improved use of local resources
In the final assessment survey recently conducted has identified that the weighted average energy consumption has been reduced from 3.46 MJ/kg fired brick in 2013 to 2.97 MJ/kg fired brick in 2017. This equals to a reduction of the energy intensity of 14.1% - 4% over the projects initial target!
Manufacturers were introduced to alternative technologies and processes to increase their access to international best practice and upgrade opportunities. The Vertical Shaft Brick Kiln (VSBK) and the Habla Zig Zag Kiln were the two that proved most suitable for South African conditions. Both these kiln firing technologies reduce the use of coal during firing, which in turn reduces emissions.
Research into the coal use of different firing technologies and case studies on technology improvements have quantified potential energy savings as well as return on investment and payback periods. This ensures that brick manufacturers make informed decisions about future capital improvements, which will continue to boost the sustainability of the industry.
Benefits for air quality & health
The various technologies - especially the new firing methods - have drastically reduced the PM 10 (particulate matter) and Black Carbon by up to 90% at participating brick-makers, bringing it within the regulation limits of 50 ppm. These polluting gases are emitted by the uncontrolled firing process of older clamp kilns. Air quality improvements are shown wherever technology was upgraded.
Direct large human health benefits come from the significant improvement at the various factories, improving the working conditions and exposure to gases during the operation of the various technologies.
Long-term Knowledge Transfer
The project operates in close co-operation with the Clay Brick Association of South Africa (CBA), the industry body that supports, informs and educates the majority of clay brick manufacturers in the formal sector.
By working hand-in-hand with the CBA, the EECB project was able to leverage the credibility and communications base of an existing organisation, enabling them to reach producers and industry suppliers quickly and cost-effectively.
As part of its education initiatives, the EECB funded several publications and research studies to add to the technology knowledgebase for the industry both nationally and internationally. With assistance and funding from the EECB product, the CBA completed South Africa’s first industry-wide Life Cycle Assessment (LCA). All publications were distributed through the CBA to its members and other brick-makers. The lessons learned in South Africa have been shared in Australia, Europe, the UK and USA.
The project was handed over to the CBA for ongoing implementation in 2017. Through education and skills transfer, The EECB Project leaves behind an industry empowered and committed to continue to improve their sustainability.