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Volume 18
Issue 13
10.3390/en18133434
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Article

Research on the Chlorine Removal and Upgrading of Waste Plastic Pyrolysis Oil Using Iron-Based Adsorbents

by
Hyo Sik Kim
1,
Hyun-Ji Kim
1,
Jihyeon Kim
1,
Jin-Ho Kim
1,
Tae-Jin Kang
1,
Suk-Hwan Kang
1,*,
Yeji Lee
2,
Soo Chool Lee
2,
Chi-Seong Chang
3 and
Jong Wook Bae
4,*
1
Clean Energy Conversion Center, Institute for Advances Engineering (IAE), 175-28 Goan-ro 51, Baegam-myen, Cheoin-gu, Yongin 17180, Republic of Korea
2
Research Institute of Advanced Energy Technology, Kyungpook National University, 80, Daehak-ro, Buk-gu, Daegu 41566, Republic of Korea
3
Daehan Corporation, 82, Seongseo-ro 72-gil, Dalseo-gu, Daegu 42697, Republic of Korea
4
School of Chemical Engineering, Sungkyunkwan University (SKKU), 2066 Seobu-ro, Jangan-gu, Suwon 16419, Republic of Korea
*
Authors to whom correspondence should be addressed.
Energies 2025, 18(13), 3434; https://doi.org/10.3390/en18133434
Submission received: 19 May 2025 / Revised: 16 June 2025 / Accepted: 23 June 2025 / Published: 30 June 2025
(This article belongs to the Special Issue Pyrolysis and Gasification of Biomass and Waste, 3rd Edition)
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Abstract

The emergence of plastics as an essential item in modern society has led to the problem of accumulating plastic waste. Accordingly, research is being conducted around the world to reduce the production of new plastics and develop technologies to recycle waste plastics. Among the existing waste plastic recycling technologies, oil production is possible through pyrolysis, but the pyrolysis oil produced in this way has a wide carbon range (more than C5–C25), and a very high olefin content (the presence of aromatic compounds), and the resulting high calorific value of pyrolysis oil is limited in its application range. In the case of oil obtained by pyrolyzing waste plastic containing Cl, there is a concern about corrosion in the reactor. Accordingly, it is possible to diversify the range of use of pyrolysis oil produced by suppressing corrosion through Cl removal as well as oil upgrading through cracking. Therefore, this study used red mud mixed with a series of adsorbents for Cl removal and pyrolysis oil upgrade. The adsorbent was physically mixed with a binder (kaolin or methylcellulose) and activated carbon, and the results before and after the reaction were confirmed through basic characteristic analysis.
Keywords: waste plastic; pyrolysis; chlorine removal; oil upgrading; cracking; plastic recycling waste plastic; pyrolysis; chlorine removal; oil upgrading; cracking; plastic recycling

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MDPI and ACS Style

Kim, H.S.; Kim, H.-J.; Kim, J.; Kim, J.-H.; Kang, T.-J.; Kang, S.-H.; Lee, Y.; Lee, S.C.; Chang, C.-S.; Bae, J.W. Research on the Chlorine Removal and Upgrading of Waste Plastic Pyrolysis Oil Using Iron-Based Adsorbents. Energies 2025, 18, 3434. https://doi.org/10.3390/en18133434

AMA Style

Kim HS, Kim H-J, Kim J, Kim J-H, Kang T-J, Kang S-H, Lee Y, Lee SC, Chang C-S, Bae JW. Research on the Chlorine Removal and Upgrading of Waste Plastic Pyrolysis Oil Using Iron-Based Adsorbents. Energies. 2025; 18(13):3434. https://doi.org/10.3390/en18133434

Chicago/Turabian Style

Kim, Hyo Sik, Hyun-Ji Kim, Jihyeon Kim, Jin-Ho Kim, Tae-Jin Kang, Suk-Hwan Kang, Yeji Lee, Soo Chool Lee, Chi-Seong Chang, and Jong Wook Bae. 2025. "Research on the Chlorine Removal and Upgrading of Waste Plastic Pyrolysis Oil Using Iron-Based Adsorbents" Energies 18, no. 13: 3434. https://doi.org/10.3390/en18133434

APA Style

Kim, H. S., Kim, H.-J., Kim, J., Kim, J.-H., Kang, T.-J., Kang, S.-H., Lee, Y., Lee, S. C., Chang, C.-S., & Bae, J. W. (2025). Research on the Chlorine Removal and Upgrading of Waste Plastic Pyrolysis Oil Using Iron-Based Adsorbents. Energies, 18(13), 3434. https://doi.org/10.3390/en18133434

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