計畫名稱：以水熱法轉化廢棄輪胎為高值產品之研究
契約編號：EPA-108-XA08
受補助單位：財團法人環境資源研究發展基金會
計畫主持人：葉彥伯 資深副研究員
協同主持人：林進榮 教授、劉雅瑄 教授
計畫期程：108年01月01日起108年11月30日止
摘 要
本研究提出廢棄輪胎體積減容的新概念，將廢輪胎中的所含有材料，經系統化且有效率回收其中的原材料，並進一步地改質為更高級的材料，使這項傳統產業能提升到新的應用材料領域。我們以「水熱法轉化廢棄輪胎為高值產品」之研究，透過簡易的水熱法，進行脫硫反應以及雜質溶出，以利下一步驟的處理，接續地可以選擇溶劑法或是熱處理回收廢棄輪胎中的碳黑與橡膠，盡量維持其原始的物化特性使其有廣泛的應用層面；同時也可將原本含硫量就很高的廢棄輪胎直接轉化為含硫活性碳，用以吸附除污技術。回收碳黑的顆粒大小範圍是10 nm到10 0nm，平均值約莫60 nm。其比表面積為25 m2/g、灰分<0.5%、pH6.3，本研究所獲得的回收碳黑可以取代N660和N770的半補強碳黑。回收橡膠的純度高，是以天然/人工橡膠為主體，固定碳15%，灰分幾近於0%。含硫活性碳對於Cu2+與Pb2+有較高的吸附能力，是源自硫元素對於鉛和銅的高親和力。同時，含硫活性碳對氣態的元素汞和液態的染料，具有除污的商業潛力。成本估算結果指出靜態投資回收期約為2.5年至40年，主要取決於產品的品質高低所能獲得的售價範圍。本研究是一項技術、三種回收產物。除了可減輕輪胎廢棄物對環境造成之衝擊外，亦可將輪胎廢棄物轉換為有用資源，變成附加價值高之產品，創造更高的效益。
This project proposes a new concept of volume reduction of waste tires, systematically and efficiently recovers the raw materials contained in the waste tires, and further upgrades to higher-grade materials, so that this traditional industry can be upgraded to new field of applied materials. We use the hydrothermal method to convert waste tires into high-value products, through the simple hydrothermal method, desulfurization reaction and impurity dissolution, in order to facilitate the next step of treatment, and then choose solvent method or heat treatment recovery. The carbon black and rubber in the waste tires maintain their original physicochemical properties to a wide range of applications. At the same time, the waste tires with high sulfur content can be directly converted into sulfur-containing activated carbon for adsorption. The recovered carbon black has a particle size ranging from 10 nm to 100 nm with an average of about 60 nm. Its specific surface area is 25 m2/g, ash content <0.5%, pH 6.3, the recovered carbon black obtained in this study can replace the semi-reinforcing carbon black of N660 and N770. The purity of the recycled rubber is high, and the natural/artificial rubber is the main body, the fixed carbon is 15%, and the ash is almost 0%. Sulfur-containing activated carbon has a high adsorption capacity for Cu2+ and Pb2+, and is derived from the high affinity of sulfur for lead and copper. At the same time, sulfur-containing activated carbon has a commercial potential for decontamination of gaseous elemental mercury and liquid dyes. The cost estimate indicates that the static investment payback period is approximately 2.5 to 40 years, depending on the range of prices that can be obtained for the quality of the product. This study is a technology, three recycling products. In addition to reducing the environmental impact of abortion waste, it can also convert abortion waste into useful resources, and become a product with high added value, creating higher benefits.
