Utilizing Carbon Dioxide as a Reaction Medium to Mitigate Production of Polycyclic Aromatic Hydrocarbons from the Thermal Decomposition of Styrene Butadiene Rubber
- Authors
- Kwon, Eilhann E.; Yi, Haakrho; Castaldi, Marco J.
- Issue Date
- Oct-2012
- Publisher
- AMER CHEMICAL SOC
- Citation
- ENVIRONMENTAL SCIENCE & TECHNOLOGY, v.46, no.19, pp.10752 - 10757
- Indexed
- SCIE
SCOPUS
- Journal Title
- ENVIRONMENTAL SCIENCE & TECHNOLOGY
- Volume
- 46
- Number
- 19
- Start Page
- 10752
- End Page
- 10757
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/191446
- DOI
- 10.1021/es301933p
- ISSN
- 0013-936X
- Abstract
- The CO2 cofeed impact on the pyrolysis of styrene butadiene rubber (SBR) was investigated using thermogravimetric analysis (TGA) coupled to online gas chromatography/mass spectroscopy (GC/MS). The direct comparison of the chemical species evolved from the thermal degradation of SBR in N-2 and CO2 led to a preliminary mechanistic understanding of the formation and relationship of light hydrocarbons (C1-4), aromatic derivatives, and polycyclic aromatic hydrocarbons (PAT-Is), clarifying the role of CO2 in the thermal degradation of SBR The identification and quantification of over 50 major and minor chemical species from hydrogen and benzo[ghi]perylene were carried out experimentally in the temperature regime between 300 and 500 degrees C in N-2 and CO2. The significant amounts of benzene derivatives from the direct bond dissociation of the backbone of SBR, induced by thermal degradation, provided favorable conditions for PAHs by the gas-phase addition reaction at a relatively low temperature compared to that with conventional fuels such as coil and petroleum-derived fuels. However, the formation of PAT-Is in a CO2 atmosphere was decreased considerably (i.e., similar to 50%) by the enhanced thermal cracking behavior, and the ultimate fates of these species were determined by different pathways in CO2 and N-2 atmospheres. Consequently, this work has provided a new approach to mitigate PAHs by utilizing CO2 as a reaction medium in thermochemical processes.
- Files in This Item
-
Go to Link
- Appears in
Collections - 서울 공과대학 > 서울 자원환경공학과 > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/191446)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.