| 학회 | 한국화학공학회 |
| 학술대회 | 2019년 가을 (10/23 ~ 10/25, 대전컨벤션센터) |
| 권호 | 25권 2호, p.1489 |
| 발표분야 | 생물화공 (Biochemical Engineering) |
| 제목 | Vacuum Drying Mechanism, Kinetics and Thermodynamics of Plant Cell Taxus chinensis |
| 초록 | Abstract In this study, we investigated the kinetics and thermodynamics of vacuum drying and dehydration of plant cell Taxus chinensis. At all the temperatures (45, 50, 55, and 60 °C), a large amount of the moisture was initially removed during the drying, and the drying efficiency increased when increasing the drying temperature. The experimental data were fitted to the Newton, Henderson and Pabis, Page, Modified Page and Geometric models. Comparison of results revealed that the Modified Page model could account for the adsorption isotherm data with the highest accuracy among the five drying models considered. The effective diffusion coefficient (3.6602 × 10-14 ~ 1.0981 × 10-13 m/s2) and mass transfer coefficient (2.0181 × 10-12 ~ 9.6811 × 10-12 m/s) increased with increasing drying temperature. The small Biot number (2.3433 × 10-3 ~ 3.7470 × 10-3) indicated that the process of mass transfer was externally controlled. The activation energy Ea of vacuum drying was found to be 73.07 kJ/mol. Thermodynamic parameters revealed the endothermic and spontaneous nature of drying. |
| 저자 | 강석수, 김진현 |
| 소속 | 공주대 |
| 키워드 | 생물화학공학 |
| 원문파일 | 초록 보기 |
