Browsing by Author "Buadit T."

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    Environmental impact of passenger car tire supply chain in Thailand using the life cycle assessment method
    (2023-05-01) Buadit T.; Ussawarujikulchai A.; Suchiva K.; Papong S.; Ma H.w.; Rattanapan C.; Mahidol University
    Although the tire industry contributes to Thailand's economy, every phase throughout its supply chain has the potential to harm the environment. A comprehensive understanding of all potential environmental impacts and a comparison study are effective approaches to the mitigation of such harm. This research applied a life cycle assessment (LCA) to analyze the detrimental effects of the Thai automotive tire supply chain, starting from rubber plantations, tire production and utilization stage until end-of-life tire handling. Two types of waste tire management technologies, namely, pyrolysis and reclaimed rubber, were compared to identify the optimal disposal option. The results found that both management technologies have negative values for almost every category as a result of the avoided impact from valuable products. The only exception is water consumption in pyrolysis. Global warming, terrestrial ecotoxicity, and fossil resource scarcity are significant benefits if end-of-life tires are recycled. When considered throughout the supply chain, reclaimed rubber yielded a superior negative value for the total score of terrestrial ecotoxicity and water usage. This demonstrates the advantage of reclaiming worn-out tires to replace traditional synthetic rubber, as opposed to pyrolysis, where the cumulative value remains positive. The uncompensated impact came from the higher impact of tire manufacturing and the use of tires. The use of gasoline and greenhouse emissions produced the most effects during the usage phase, while electricity consumption was the major contributor to tire manufacturing and waste tire disposal. As a result, waste tire management technology to recover valuable materials and power system efficiency improvement were suggested, along with research and development of a new tire model for diminishing gasoline consumption and air pollution. These strategies could mitigate the environmental impact and eventually enhance the sustainability of the tire supply chain.
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    Green productivity and value chain analysis to enhance sustainability throughout the passenger car tire supply chain in Thailand
    (2023-09-01) Buadit T.; Ussawarujikulchai A.; Suchiva K.; Papong S.; Rattanapan C.; Mahidol University
    Although the tire industry is important for the economy of the country, focusing only on productivity will not lead to sustainable production and competitiveness in today's global market. This research aimed to enhance economic and environmental performance throughout Thailand's tire supply chain using green productivity (GP) and value chain analysis. The current performance of the tire supply chain was presented using GP level with value chain analysis for identifying the causes of extravagant resources, energy, or waste. The clean technology (CT) concept was used to develop options to improve GP and obtaining a sustainable tire supply chain. The results showed that the highest GP value of primary and intermediate rubber products was fresh latex and smoke sheet rubber. Cup lump and STR20 block rubber, in contrast, offered the lowest GP. Overuse of chemical fertilizer in the cup lump production, water consumption in the STR20 production and steam consumption in the tire manufacturing process were key issues selected for developing CT options from value chain analysis. The chosen options are to fertilize following the Rubber Research Institute recommendations, recycle used or treated water in the rubber industry and lower mold open time among tire manufacturers to reduce steam and coal consumption. These techniques were predicted to raise the GP value from 0.1495 to 0.1626 in cup lump production, 0.0320–0.0326 in the STR20 plant and 0.0098–0.0114 in a tire factory. It indicated a more sustainable business operation that could reduce environmental impacts and increase competitiveness simultaneously.