Sustainable management of medical plastic waste through carbon dioxide-assisted pyrolysis

被引：4

作者：

Kim, Jee Young ^{[1
]}

Park, Jonghyun ^{[1
]}

Lee, Dong-Jun ^{[1
,2
]}

Choi, Ye-Bin ^{[2
]}

Kwon, Eilhann E. ^{[1
]}

机构：

[1] Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul

[2] Department of Animal Environment, National Institute of Animal Science (NIAS), Wanju

来源：

Chemosphere | 2024年 / 364卷

基金：

新加坡国家研究基金会;

关键词：

Circular economy; CO[!sub]2[!/sub] utilization; Medical plastic waste; Plastic valorization; Waste-to-energy;

D O I：

10.1016/j.chemosphere.2024.143266

中图分类号：

学科分类号：

摘要：

To address the challenges associated with medical plastic waste and to characterize its heterogeneity, non-recyclability, and potential biohazard risks, this study explored a carbon dioxide (CO2)-assisted pyrolysis process as a sustainable disposal method. Medical plastic waste typically includes polypropylene, polystyrene, and polyvinyl chloride. To experimentally evaluate the functional reactivity of CO2, we employed three pyrolysis setups (one-stage, two-stage, and catalytic processes). The technical advantages of using CO2 over inert gases such as nitrogen (N2) were demonstrated through pyrolysis tests. The results showed that energy production was enhanced under CO2 conditions, with catalytic pyrolysis generating 146% more flammable gases compared to pyrolysis in an N2 environment. The use of CO2 also led to a reduction in the formation of toxic chemicals due to improved thermal cracking. The CO2-assisted pyrolysis process exhibited net negative CO2 emissions when a catalyst was present, as a substantial amount of CO2 was consumed during the process. In conclusion, CO2-assisted pyrolysis of medical plastic waste offers a sustainable management solution that maximizes the utilization of carbon resources. © 2024 Elsevier Ltd

引用

共 59 条

[1]

Abbas-Abadi M.S., Van Geem K.M., Fathi M., Bazgir H., Ghadiri M., The pyrolysis of oak with polyethylene, polypropylene and polystyrene using fixed bed and stirred reactors and TGA instrument, Energy, 232, (2021)

[2]

Aburto J.M., Villavicencio F., Basellini U., Kjaergaard S., Vaupel J.W., Dynamics of life expectancy and life span equality, Proc. Natl. Acad. Sci. U. S. A., 117, pp. 5250-5259, (2020)

[3]

Ajay S.V., Prathish K.P., Dioxins emissions from bio-medical waste incineration: a systematic review on emission factors, inventories, trends and health risk studies, J. Hazard Mater., 465, (2024)

[4]

Basu P.

[5]

Cho S.-H., Kim Y., Lee S., Andrew Lin K.-Y., Chen W.-H., Jung S., Lee D., Hyun Moon D., Jeon Y.J., Kwon E.E., Virtuous utilization of carbon dioxide in pyrolysis of polylactic acid, Chem. Eng. J., 466, (2023)

[6]

Dash A., Kumar S., Singh R.K., Thermolysis of medical waste (waste syringe) to liquid fuel using semi batch reactor, Waste Biomass Valorization, 6, pp. 507-514, (2015)

[7]

Dong N., Hui H., Li S., Du L., Study on preparation of aromatic-rich oil by thermal dechlorination and fast pyrolysis of PVC, J. Anal. Appl. Pyrolysis, 169, (2023)

[8]

Escalante J., Chen W.-H., Tabatabaei M., Hoang A.T., Kwon E.E., Andrew Lin K.-Y., Saravanakumar A., Pyrolysis of lignocellulosic, algal, plastic, and other biomass wastes for biofuel production and circular bioeconomy: a review of thermogravimetric analysis (TGA) approach, Renew. Sustain. Energy Rev., 169, (2022)

[9]

Fang S., Jiang L., Li P., Bai J., Chang C., Study on pyrolysis products characteristics of medical waste and fractional condensation of the pyrolysis oil, Energy, 195, (2020)

[10]

Harussani M.M., Sapuan S.M., Rashid U., Khalina A., Ilyas R.A., Pyrolysis of polypropylene plastic waste into carbonaceous char: priority of plastic waste management amidst COVID-19 pandemic, Sci. Total Environ., 803, (2022)

← 1 2 3 4 5 6 →