The large volume of tire waste generated globally poses a major waste disposal problem. In the natural environment, disposed of tires do not degrade easily, but they can be processed through pyrolysis, to get char, gas, and oil. In this study, tire pyrolysis was done using 0.00%, 1.50%, 2.50%, 5.00%, 7.50%, and 10.00% sodium carbonate catalyst in the feed material to produce oil. An evaluation of the effects of the catalyst on the cetane index, calorific value, pH level, and flash point of tire pyrolytic oil (TPO) was carried out since these are the essential properties in relation to safety in its handling and efficiency in engine performance and operation. There was a decrease in the calorific value by 3.09%, the flash point by 37.25%, and the cetane index by 71.2% with increasing catalyst percentage, while the pH was found to increase by 19.78% (between 0.00 and 5.00% sodium carbonate catalysts) and then decreased when more than 5.00% of the catalyst was employed. These results will provide theoretical information that will guide its handling and usage as fuel.

中文翻译：

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碳酸钠催化剂对轮胎热解油的热值、闪点、十六烷指数和 pH 值的影响

全球产生的大量轮胎废物构成了一个主要的废物处理问题。在自然环境中，废弃的轮胎不易降解，但可以通过热解处理，得到炭、气和油。在这项研究中，轮胎热解是在原料中使用 0.00%、1.50%、2.50%、5.00%、7.50% 和 10.00% 的碳酸钠催化剂来生产油的。评估了催化剂对轮胎热解油 (TPO) 的十六烷指数、热值、pH 值和闪点的影响，因为这些是与其处理安全性和发动机性能效率相关的基本特性和操作。随着催化剂百分比的增加，热值降低了 3.09%，闪点降低了 37.25%，十六烷指数降低了 71.2%，而 pH 值增加了 19。78%（在 0.00 和 5.00% 碳酸钠催化剂之间），然后当使用超过 5.00% 的催化剂时降低。这些结果将提供理论信息，指导其作为燃料的处理和使用。