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论文类型：期刊论文

发表时间：2009-07-01

发表刊物：JOURNAL OF ENVIRONMENTAL SCIENCES

收录刊物：SCIE、PubMed、ISTIC、CSCD

卷号：21

期号：9

页面范围：1290-1295

ISSN号：1001-0742

关键字：microwave heating; crude oil remediation; carbon fiber

摘要：Thermal remediation of the soil contaminated with crude oil using microwave heating enhanced by carbon fiber (CF) was explored. The contaminated soil was treated with 2.45 GHz microwave, and CF was added to improve the conversion of microwave energy into thermal energy to heat the soil. During microwave heating, the oil contaminant was removed from the soil matrix and recovered by a condensation system of ice-salt bath. The experimental results indicated that CF could efficiently enhance the microwave heating of soil even with relatively low-dose. With 0.1 wt.% CF, the soil could be heated to approximately 700 degrees C within 4 min using 800 W of microwave irradiation. Correspondingly, the contaminated soil could be highly cleaned up in a short time. Investigation of oil recovery showed that, during the remediation process, oil contaminant in the soil could be efficiently recovered without causing significant secondary pollution.