| 학회 | 한국화학공학회 |
| 학술대회 | 2003년 가을 (10/24 ~ 10/25, 한양대학교) |
| 권호 | 9권 2호, p.2654 |
| 발표분야 | 이동현상 |
| 제목 | Numerical Analysis of Anionic Surfactant Adsorption on Activated Carbons in Fixed-Bed |
| 초록 | This work investigates the adsorption characteristics due to adsorbent surface properties, adsorbate properties, and adsorption systems. The adsorbents were coconut-based, steam-activated carbon and wood-based, phosphoric acid-activated carbon. The adsorbates were dodecanoic acid (C12) and octanoic acid (C8). A fixed-bed adsorption column was modeled with the liquid-phase mass balance equations, the solid-phase mass balance equations, and the Langmuir isotherm equations. The activated carbon with more hydrophobicity had larger adsorption capacity for C8 and C12 . Also, the surface diffusion rates of C8 and C12 became slower in the strong caustic solution. The longer molecular dimension of the surfactant led to a faster external mass transfer rate onto the activated carbons but a slower surface diffusion rate inside their narrow pores. On mixed component adsorption the external mass transfer coefficients and the surface diffusion coefficients of the anionic surfactants were consistent with those on single component adsorption, but on the adsorption system displacing C8 by C12 the surface diffusion rate of C12 was slower than on single component adsorption. |
| 저자 | 김정희1, Phillip Pendleton2, 정용옥1 |
| 소속 | 1부경대, 2Univ. of South Australia |
| 키워드 | Numerical Analysis; Anionic Surfactant;Adsorption ;Activated Carbons;Fixed-Bed |
| 원문파일 | 초록 보기 |
