Abstract
This article reviews remedial waste tyre technologies
as well as utilization for energy and material recovery. Application
examples and scenarios are drawn from developing countries such as
South Africa. Waste minimization and utilization technologies are
required to address the growing waste tyre problem. Waste tyres
cause a variety of environmental and health challenges as they are
bulk and non-degradable. Potential solutions to address the waste
tyre problem are pyrolysis, gasification and liquefaction (PGL)
processes. Process conditions and potential products for each process
are reviewed and discussed in this paper. An environmental impact
assessment of PGL processes and potential remedial solutions are
also presented. PGL processes have huge potential for business.
However the success of any operation depends on several economic
and environmental factors such as capital and operating costs, feed
availability, permitting process and emission from these operations.