Thermal and Kinetic Behaviors during Co-Pyrolysis of Microcrystalline Cellulose and Styrene–Butadiene–Styrene Triblock Copolymer

Shijie Yu,Qinghai Li,Xiaoxiao Yang,Zhongchao Tan,Hui Zhou,Yanguo Zhang,Kunlin Cong

doi:10.3390/pr9081335

Shijie Yu, Qinghai Li + Show 5 more

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https://doi.org/10.3390/pr9081335

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Journal: Processes	Publication Date: Jul 30, 2021
Citations: 7	License type: CC BY 4.0

Affiliation: Tsinghua University, University of Waterloo

Abstract

The interaction between various municipal solid waste components is very important for the actual solid waste treatment process. Microcrystalline cellulose (MC) and styrene–butadiene–styrene triblock copolymer (SBS) are important components of municipal solid waste. In this paper, co-pyrolysis characteristics and kinetics of MC and SBS with different heating rates were investigated using a thermogravimetric analyzer. The overlap ratio was defined to evaluate the interaction between MC and SBS. The results showed that the decomposition temperature of MC was lower than that of SBS during pyrolysis. The interaction between MC and SBS, an inhibitory effect, was most significant when the MC mass fraction was 70% with an overlap ratio of 0.9764. SBS had almost no effect on the pyrolysis temperature of MC, while MC delayed the pyrolysis of SBS. Adding MC in SBS can significantly reduce the energy required for the reaction.

Highlights

Published: 30 July 2021With the rapid development of the global economy, the generation of municipal solid waste is increasing year by year [1]
The mechanism of pyrolysis can guide the thermochemical conversion of municipal solid waste, which is worth further study
The pyrolysis of Microcrystalline cellulose (MC) mainly occurred at 270–400 ◦ C, while the pyrolysis of styrene–butadiene– styrene triblock copolymer (SBS)

Summary

Introduction

Published: 30 July 2021With the rapid development of the global economy, the generation of municipal solid waste is increasing year by year [1]. The large amounts of municipal solid waste need to be disposed of safely and reliably for the sustainable development of cities. Traditional disposal methods, such as landfill, bring about a series of problems such as groundwater, pollution, and land occupation [2,3]. Thermochemical conversion is an important method of avoiding the aforementioned problems. It refers to the process of converting solid waste into energy, directly or indirectly, including pyrolysis, incineration, and gasification [4]. The mechanism of pyrolysis can guide the thermochemical conversion of municipal solid waste, which is worth further study

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