서지주요정보
동전기 기술과 계면활성제를 이용한 탄화수소 오염토양의 정화 = Surfactant-enhanced electrokinetic remediation of soil contaminated with hydrocarbons
서명 / 저자 동전기 기술과 계면활성제를 이용한 탄화수소 오염토양의 정화 = Surfactant-enhanced electrokinetic remediation of soil contaminated with hydrocarbons / 박지연.
저자명 박지연 ; Park, Ji-Yeon
발행사항 [대전 : 한국과학기술원, 2001].
Online Access 원문보기 원문인쇄

소장정보

등록번호

8011845

소장위치/청구기호

학술문화관(문화관) 보존서고

MCHE 01016

SMS전송

도서상태

이용가능

대출가능

반납예정일

초록정보

Removal of hydrophobic organic contaminants (HOCs) using electrokinetic method was studied in a model system. Kaolinite and phenanthrene were selected as the model clay soil and representative HOC. Three different types of surfactants, APG (alkyl polyglucoside), Brij30 (polyoxyethylene 4 lauryl ether), and SDS (sodium dodecyl sulfate), were used to enhance the solubility of HOCs. Electrokinetic (EK) column experiments were performed using aqueous, surfactant, and acetate buffer solutions under a constant current condition. Voltage and flow through the soil system were interpreted with time. Electrolytes pH at the anode and cathode compartments was observed for operation time. Removal efficiencies of phenanthrene were examined after the end of EK operation during 2, 4, and 6 weeks. As time passed by, low pH values due to acid fronts from the anode part dominated over the model system. Then the electroosmotic flow (EOF) and electrical potential gradually decreased. When an acetate buffer solution was applied to EK system, the EOF kept constant slopes and the electrical potential had constant values. So after a certain period of time, the EOF of buffer solution exceeded that of aqueous solution. Removal efficiency of phenanthrene in EK process using surfactant solution depended upon characteristics of surfactant under electric field; solubility, desorption ability, and mobility. Brij30 was known as a good surfactant in the removal of HOCs. In the present work on EK experiment, however, the EOF of Brij30 in aqueous solution turned out to be lower than that of other two surfactants. Removal efficiency of phenanthrene in an experiment with Brij30 was also lower than that with other surfactants. In order to increase the EOF, an acetate buffer could be added to the washing solution. Brij30 in buffer solution showed a high removal efficiency of phenanthrene. APG was known to be an environmentally compatible and non-toxic surfactant. When APG was applied to EK experiment, it showed a high EOF and removal efficiency. The results obtained from this study show that EK process combined with surfactant washing and pH buffering is a promising technology for HOCs removal in low-permeability.

서지기타정보

서지기타정보
청구기호 {MCHE 01016
형태사항 vii, 65 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Ji-Yeon Park
지도교수의 한글표기 : 양지원
지도교수의 영문표기 : Ji-Won Yang
학위논문 학위논문(석사) - 한국과학기술원 : 화학공학과,
서지주기 참고문헌 : p. 62-65
주제 동전기 정화
전기삼투
계면활성제
electrokinetic remediation
electroosmosis
surfactant
QR CODE qr code