콘텐츠 본문
논문 해외 국제전문학술지(SCI급) Selective adsorption of phenanthrene in nonionic-anionic surfactant mixtures using activated carbon
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2010-04
- 저자명 우승한
- 학술지명 CHEMICAL ENGINEERING JOURNAL
- 발행처명 ELSEVIER SCIENCE SA
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 3
논문 초록 (Abstract)
Surfactant enhanced soil washing is an efficient remediation process for sites contaminated with hazardous hydrophobic organiccompound (HOC). To reduce the cost of the process, the used surfactant shou ld be recovered. This paper presents investigation of selective adsorpti on of HOC in nonionic-anionic surfactant mixtures by activated carbon as a means of recovering surfactants, using phenanthrene (PHE) as an HO C, Triton X-100 (TX100) as a nonionic surfactant, and sodium dodecyl sulfate (SDS) as an anionic surfactant. The sorbed amount of TX10 0 on activated carbon decreased from 0.433 to 0.227 mmol/g as SOS dose increased. However the sorbed amount of PHE increased from 0.125 to 0.178 mmol/g as SOS dose increased because molar solubilization ratio of the surfactant mixtures decreased. As a result, selectivity for PHE sorption that represents the ratio of PHE partitioning to surf actant partitioning increased with increase in the proportion of SOS in the surfactant mixture.Selectivity for PHE to surfactant was muc h higher than 1 over a wide range of surfactant composition. The highe st selectivity, 95.97 +/- 49.94 at 5.61 x 10(-2) mmol-PHE/L, was obtained in the solution containing only SDS. These results suggest th at addition of anionic surfactant may improve surfactant recover y when selective adsorption for surfactant recovery is included in s oil remediation by surfactant enhanced soil washing. (C) 2009 Els evier B.V. All rights reserved.
