Ali Salmiaton, Garforth Arthur, Fakhru'l-Razi A
Department of Chemical & Environmental Engineering, Faculty of Engineering, Universiti Putra Malaysia, Serdang, Malaysia.
J Environ Sci Health A Tox Hazard Subst Environ Eng. 2006;41(6):1145-54. doi: 10.1080/10934520600623042.
Feedstock recycling of high-density polyethylene (HDPE) over fluid catalytic cracking (FCC) catalysts (1:6 ratio) was carried out using a laboratory fluidized bed reactor operating at 450 degrees C. Fresh and steam deactivated commercial FCC catalysts with different levels of rare earth oxide (REO) were compared as well as used FCC catalysts (E-Cats) with different levels of metal poisoning. Fresh FCC catalysts gave the highest results of HDPE degradation in terms of yield of volatile hydrocarbon product. Meanwhile, steamed FCC catalysts and used FCC catalysts showed similar but lower yields. Overall, the product yields from HDPE cracking showed that the level of metal contamination (nickel and vanadium) did not affect the product stream generated from polymer cracking. This study gives promising results as an alternative technique for the cracking and recycling of polymer waste.
在450摄氏度下，使用实验室流化床反应器对高密度聚乙烯（HDPE）与流化催化裂化（FCC）催化剂（比例为1:6）进行原料回收。比较了具有不同稀土氧化物（REO）含量的新鲜和经蒸汽失活的商业FCC催化剂，以及具有不同金属中毒水平的用过的FCC催化剂（E-Cats）。就挥发性烃产物的产率而言，新鲜FCC催化剂的HDPE降解效果最佳。同时，经蒸汽处理的FCC催化剂和用过的FCC催化剂产率相似但较低。总体而言，HDPE裂解的产物产率表明，金属污染（镍和钒）水平不影响聚合物裂解产生的产物流。作为聚合物废料裂解和回收的替代技术，本研究取得了有前景的结果。
