Exergy and energy analysis of pyrolysis of pretreated single-use waste plastics

IF 5.8 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY Sustainable Chemistry and Pharmacy Pub Date : 2025-04-16 DOI:10.1016/j.scp.2025.102020

Uduak Bassey , Husain Ibrahaim , Emmanuel Edet , Satyanarayana Narra , Gesa Beck , Michael Nelles , Michael Hartmann

{"title":"Exergy and energy analysis of pyrolysis of pretreated single-use waste plastics","authors":"Uduak Bassey , Husain Ibrahaim , Emmanuel Edet , Satyanarayana Narra , Gesa Beck , Michael Nelles , Michael Hartmann","doi":"10.1016/j.scp.2025.102020","DOIUrl":null,"url":null,"abstract":"<div><div>The kinetics of the pyrolysis of real-life mixed single-use waste plastics were assessed using experimental data from a lab-scale batch reactor by conducting a nonlinear least square curve fitting. The optimizing effect of waste plastics pretreatment on product yield, energy and exergy efficiency of the pyrolysis process was investigated. Process parameters such as energy recovery ratio, energy combustion ratio, and others were considered. The best-fitting kinetic model for mixed single-use plastics (raw and pretreated) was Avrami-Erofeev. Energy and exergy efficiencies obtained from pyrolyzing raw and pretreated single-use waste plastics were in the range of 17–42 % and 35–74 %, respectively. It was revealed that pyrolyzing pretreated feedstock compared to raw SUP increased the oil/wax yield from 62.61 ± 0.41 % to 79.38 ± 0.48 %. This work provides a reliable assessment of the potential of pyrolysis to efficiently convert mixed waste plastics to fuel.</div></div>","PeriodicalId":22138,"journal":{"name":"Sustainable Chemistry and Pharmacy","volume":"45 ","pages":"Article 102020"},"PeriodicalIF":5.8000,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Sustainable Chemistry and Pharmacy","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2352554125001184","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

The kinetics of the pyrolysis of real-life mixed single-use waste plastics were assessed using experimental data from a lab-scale batch reactor by conducting a nonlinear least square curve fitting. The optimizing effect of waste plastics pretreatment on product yield, energy and exergy efficiency of the pyrolysis process was investigated. Process parameters such as energy recovery ratio, energy combustion ratio, and others were considered. The best-fitting kinetic model for mixed single-use plastics (raw and pretreated) was Avrami-Erofeev. Energy and exergy efficiencies obtained from pyrolyzing raw and pretreated single-use waste plastics were in the range of 17–42 % and 35–74 %, respectively. It was revealed that pyrolyzing pretreated feedstock compared to raw SUP increased the oil/wax yield from 62.61 ± 0.41 % to 79.38 ± 0.48 %. This work provides a reliable assessment of the potential of pyrolysis to efficiently convert mixed waste plastics to fuel.

Abstract Image

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

预处理一次性废塑料的热解能及能分析

利用实验室规模间歇式反应器的实验数据，通过非线性最小二乘曲线拟合，对实际混合一次性废塑料的热解动力学进行了评估。研究了废塑料预处理对热解产物收率、能量和火用效率的优化效果。考虑了能量回收率、能量燃烧比等工艺参数。混合一次性塑料（生料和预处理）的最佳拟合动力学模型是Avrami-Erofeev。通过热解原料和预处理一次性废塑料获得的能量和火用效率分别在17 - 42%和35 - 74%之间。结果表明，与原料SUP相比，热解预处理的原料使油蜡收率从62.61±0.41%提高到79.38±0.48%。这项工作为热解有效地将混合废塑料转化为燃料的潜力提供了可靠的评估。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文去求助

来源期刊

Sustainable Chemistry and Pharmacy Environmental Science-Pollution

CiteScore

8.20

自引率

6.70%

发文量

274

审稿时长

37 days

期刊介绍： Sustainable Chemistry and Pharmacy publishes research that is related to chemistry, pharmacy and sustainability science in a forward oriented manner. It provides a unique forum for the publication of innovative research on the intersection and overlap of chemistry and pharmacy on the one hand and sustainability on the other hand. This includes contributions related to increasing sustainability of chemistry and pharmaceutical science and industries itself as well as their products in relation to the contribution of these to sustainability itself. As an interdisciplinary and transdisciplinary journal it addresses all sustainability related issues along the life cycle of chemical and pharmaceutical products form resource related topics until the end of life of products. This includes not only natural science based approaches and issues but also from humanities, social science and economics as far as they are dealing with sustainability related to chemistry and pharmacy. Sustainable Chemistry and Pharmacy aims at bridging between disciplines as well as developing and developed countries.