Choi Byeongwook, Yu Jin-Seo, Kang Gu-Young, Jeong Tae-Yong, Jho Eun Hea, Lee Sung-Jong
Department of Environmental Science, Hankuk University of Foreign Studies, 81 Oedae-ro, Mohyeon-eup, Cheoin-gu, Yongin-si 17035, Korea.
Department of Agricultural and Biological Chemistry, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 61186, Korea.
Toxics. 2022 May 12;10(5):245. doi: 10.3390/toxics10050245.
Oil-contaminated soil is a major societal problem for humans and the environment. In this study, the pyrolysis method was applied to oil-contaminated soil used as a landfill and gas station site in Korea. The removal efficiency of the main components of oil-contaminated soils, such as total petroleum hydrocarbons (TPH), polyaromatic hydrocarbons (PAHs), unresolved complex mixture (UCM), and alkylated PAHs (Alk-PAHs) were measured, and the effect of temperature, treatment time, and moisture content on pyrolysis efficiency was studied. In order to evaluate the risk of soil from which pollutants were removed through pyrolysis, integrated ecotoxicity was evaluated using and . The chemical and biological measurements in this study include contaminants of emerging concerns (CECs). Results showed that the pyrolysis was more efficient with higher treatment temperatures, moisture content, and treatment times. In addition, toxicity was reduced by 99% after pyrolysis, and the degree of toxicity was evaluated more sensitively in than in . This study shows that weathered oil-contaminated soil can be effectively treated in a relatively short time through pyrolysis, as well as provides information on efficient conditions and the assessment of ecotoxicity.
油污土壤对人类和环境来说是一个重大的社会问题。在本研究中，热解方法被应用于韩国一处曾用作垃圾填埋场和加油站的油污土壤。测量了油污土壤主要成分的去除效率，如总石油烃（TPH）、多环芳烃（PAHs）、未解析复杂混合物（UCM）和烷基化多环芳烃（Alk-PAHs），并研究了温度、处理时间和含水量对热解效率的影响。为了评估通过热解去除污染物后的土壤风险，使用 和 评估了综合生态毒性。本研究中的化学和生物学测量包括新出现的关注污染物（CECs）。结果表明，处理温度越高、含水量越高、处理时间越长，热解效率越高。此外，热解后毒性降低了99%，并且在 中比在 中对毒性程度的评估更灵敏。本研究表明，风化的油污土壤可以通过热解在相对较短的时间内得到有效处理，同时还提供了关于有效条件和生态毒性评估的信息。
