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Microwave pyrolysis of polystyrene and polypropylene mixtures using different activated carbon from biomass
Journal of the Energy Institute ( IF 5.7 ) Pub Date : 2020-04-02 , DOI: 10.1016/j.joei.2020.03.013
Prathiba Rex , Immanuvel Palies Masilamani , Lima Rose Miranda

In this study, microwave pyrolysis was experimented with mixed types of plastic waste. Two different plastic wastes polystyrene waste (PSW) and polypropylene waste (PPW) were used as feedstock. Carbon and activated carbon were synthesized from different biomass; rice husk (RH), corn husk (CH) and coconut sheath (CS) respectively which are used as microwave susceptors. The effect of impregnation on product yields was studied. Microwave pyrolysis at 900 W and with a polymer to an absorbent ratio of 10:1, produced the highest oil yield of 84.30 wt% when coconut sheath activated carbon (CSAC) was used as an absorbent. The reaction time was 10 min for the complete decomposition of polymer mixtures. Oil properties were determined and a high calorific value of 46.87 MJ kg−1 was obtained. These properties were compared to conventional fuel properties and the product oil has a density of 0.76 g ml−1 and viscosity of 2.4 cSt which is an equivalent fraction obtained to that of gasoline. Product oil has a styrene recovery of 67.58% from microwave pyrolysis. The results demonstrate that, microwave pyrolysis has a great potential for energy recovery from mixed plastic waste and the use of agricultural residues as absorbents enhanced the production efficiency of the process.



中文翻译:

使用生物质中不同的活性炭对聚苯乙烯和聚丙烯混合物进行微波热解

在这项研究中,微波热解实验了混合类型的塑料废物。两种不同的塑料废料聚苯乙烯废料(PSW)和聚丙烯废料(PPW)用作原料。碳和活性炭是由不同的生物质合成的。分别用作微波感受器的稻壳(RH),玉米壳(CH)和椰子皮(CS)。研究了浸渍对产品收率的影响。当使用椰子皮活性炭(CSAC)作为吸收剂时,在900 W的微波热解下,聚合物与吸收剂的比例为10:1,产生的最高含油量为84.30 wt%。对于聚合物混合物的完全分解,反应时间为10分钟。确定了油的性质,并显示出46.87 MJ kg -1的高热值获得了。将这些性质与常规燃料性质进行比较,并且产物油具有0.76g / ml -1的密度和2.4cSt的粘度,这是与汽油的当量分数。微波热解产物油的苯乙烯回收率为67.58%。结果表明,微波热解具有从混合塑料废料中回收能量的巨大潜力,使用农业残留物作为吸收剂可提高该工艺的生产效率。

更新日期:2020-04-02
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