VOC removal from automotive waste by supercritical CO2 extraction

IF 7.2 2区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY Journal of CO2 Utilization Pub Date : 2024-10-01 DOI:10.1016/j.jcou.2024.102940

Sabrinna Wulandari , Jongho Choi , DaeSung Jung , Aye Aye Myint , Jaehoon Kim

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Abstract

This study investigated the reduction of volatile organic compounds (VOCs) from waste polypropylene (PP) from automobile bumpers by supercritical carbon dioxide (scCO₂) extraction. The scCO₂ extraction was performed with varying temperatures, pressures, and times in the range of 313–353 K, 10–25 MPa, and 1–6 h, respectively. At 333 K, 25 MPa, and 6 h, highly efficient removal of xylene, styrene, and total VOCs were observed, with removal percentages of >98 %. Optimal condition for VOC removal using scCO₂ based on response surface methodology was determined to be 313 K, 10 MPa, and 2.17 h. No differences in size and color were observed in the scCO₂-treated PP pellets. Moreover, VOC removal using scCO₂ did not induce noticeable changes in the chemical and thermal properties of the treated PP samples. This result demonstrated that scCO₂ extraction is a promising method for the VOC removal from automobile plastic waste.

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超临界二氧化碳萃取法去除汽车废料中的挥发性有机化合物

本研究探讨了用超临界二氧化碳（scCO2）萃取法减少汽车保险杠废聚丙烯（PP）中挥发性有机化合物（VOC）的方法。超临界二氧化碳萃取的温度、压力和时间范围分别为 313-353 K、10-25 MPa 和 1-6 h。在 333 K、25 MPa 和 6 小时的条件下，二甲苯、苯乙烯和总挥发性有机化合物的去除率高达 98%。根据响应面方法，使用 scCO2 去除挥发性有机化合物的最佳条件被确定为 313 K、10 MPa 和 2.17 h。经 scCO2 处理的 PP 粒子在尺寸和颜色上没有差异。此外，使用 scCO2 去除挥发性有机化合物并没有引起经处理 PP 样品的化学和热性能发生明显变化。这一结果表明，利用 scCO2 萃取技术去除汽车塑料废料中的挥发性有机化合物是一种很有前景的方法。

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来源期刊

Journal of CO2 Utilization CHEMISTRY, MULTIDISCIPLINARY-ENGINEERING, CHEMICAL

CiteScore

13.90

自引率

10.40%

发文量

406

审稿时长

2.8 months

期刊介绍： The Journal of CO2 Utilization offers a single, multi-disciplinary, scholarly platform for the exchange of novel research in the field of CO2 re-use for scientists and engineers in chemicals, fuels and materials. The emphasis is on the dissemination of leading-edge research from basic science to the development of new processes, technologies and applications. The Journal of CO2 Utilization publishes original peer-reviewed research papers, reviews, and short communications, including experimental and theoretical work, and analytical models and simulations.