콘텐츠 본문
논문 해외 국제전문학술지(SCI급) Selective adsorption of phenanthrene dissolved in surfactant solution using activated carbon
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2007-11
- 저자명 우승한
- 학술지명 CHEMOSPHERE
- 발행처명 PERGAMON-ELSEVIER SCIENCE LTD
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 4
논문 초록 (Abstract)
Selective adsorption of a hazardous hydrophobic organic compound (HOC) b y activated carbon as a means of recovering surfactants after a soil was hing process was investigated. As a model system, phenanthrene was selec ted as a representative HOC and Triton X-100 as a nonionic surfactant. T hree activated carbons that differed in size (Darco 20-40 (D20), 12-20 ( D12) and 4-12 (D4) mesh sizes) were used in adsorption experiments. Adso rption of surfactant onto activated carbon showed a constant maximum abo ve the critical micelle concentration, which were 0.30, 0.23, 0.15 g g(- 1) for D20, D12, and D4, respectively. Selectivity for phenanthreneto T riton X-100 was much higher than I over a wide range of activated carbon doses (0-6 g l(-1)) and initial phenanthrene concentrations (10-110 mg l(-1)). Selectivity generally increased with decreasing particle size, increasing activated carbon dose, and decreasing initial concentration of phenanthrene. The highest selectivity was 74.9, 57.3, and 38.3 for D 20, D12, and D4, respectively, at the initial conditions of 10 mg l(-1) phenanthrene, 5 g l(-1) Triton X-100 and 1g l(-1) activated carbon. In the case of D20 at the same conditions, 86.5% of the initial phenanthre ne was removed by sorption and 93.6% of the initial Triton X-100 remaine d in the solution following the selective adsorption process. The result s suggest that the selective adsorption by activated carbon is a good al ternative for surfactant recovery ill a soil washing process. (C) 2007 E lsevier Ltd. All rights reserved.
