吸着劑 表面에서의 吸着質과 물分子의 置換을 考慮한 修正 Langmuir 等溫吸着式
Altered Langmuir Adsorption Isotherm under the Consideration of the Displacement of Water Molecules with Adsorbate Ion at the Surface of Adsorbent
1
조회
0
다운로드
1
인용
0
참고문헌
키워드
초록
수중에서 일어나는 흡착반응에 대해 고전적 Langmuir 등온흡착식에서 고려되고 있지 않은 흡착제 표면에서의 흡착질과 물분자간의 치환과정을 고려한 수정된 Langmuir 등온흡착식을 제시하였다. 활성탄 표면에 대한 Cd2+의 흡착을 대상으로 도출된 수정 등온흡착식을 적용한 결과, 흡착특성의 검토 및 반응양상의 해석에 있어 고전적 Langmuir 등온흡착식에 비해 그 적용성이 향상되는 것으로 파악되었다. 이에 의거하여 Langmuir 모델을 따르는 흡착계에 있어 제시된 수정 등온흡착식을 적용할 경우, 공정의 설계 및 운영과정에서 보다 정밀하고 향상된 결과를 얻을 수 있을 것으로 사료되었다.
Abstract
Altered Langmuir adsorption isotherm has been suggested for adsorption reactions occurring in aqueous environment based upon the concept of the steric displacement between adsorbates and water molecules at the surface of adsorbent. For the adsorption of Cd2+ on activated carbon, the suggested adsorption isotherm was shown to be more well applied to the experimental results compared with the classical Langmuir adsorption isotherm. Based on this, regarding the adsorption system which following the Langmuir model more precise design and controllable operation of the process were considered to be attainable when the adsorption process is analyzed employing the altered adsorption isotherm.
참고문헌 (18)
- "Removal of some 4-pyrazolone dyes from aqueous solutions by adsorption onto different types of carbon", pp.129~153 (2005)
- "Complex-forming adsorbents based on kaolinite aluminium oxide and polyphosphates for the extraction and concentration of heavy metal ions from water solutions", pp.95~101 (2001)
- "Adsorption energy distribution model for VOCs onto activated carbons", 255, pp.248~253 (2002)
- "Equilibrium and kinetic modelling of Pb2+ biosorption by granulated agar extraction algal waste", pp.3276~3284 (2005)
- "인산활성화제에 의한 폐호도껍질을 원료로 한 활성탄 제조 및 이의 중금속 이온 흡착특성", 12, pp.13~24 (2003)
- "Removal characteristics of cadmium ion by waste egg shell", 21, pp.883~890 (2000)
- "Effect of microwave and conventional regeneration on the microporous and mesoporous network and on the adsorptive capacity of activated carbons", 85, pp.7~15 (2005)
- "The regeneration of field-spent granular activated carbons", 35, pp.2740~2748 (2001)
- "Electrochemical regeneration of a carbon-based adsorbent loaded with crystal violet dye", 49, pp.3269~3281 (2004)
- "Comparison between thermal and ozone regenerations of spent activated carbon exhausted with phenol", 38, pp.2155~2165 (2004)
- "Adsorption kinetics and column operations for the removal and recovery of malachite green from wastewater using bottom ash", 40, pp.87~96 (2004)
- "Adsorptive separation and recovery of organics from PHBA and SA plant effluents", 38, pp.241~254 (2004)
- "Regression analysis for the sorption isotherms of basic dyes on sugarcane dust", 96, pp.1285~1291 (2005)
- "Optimal operation of simulated-moving-bed reactors for nonlinear adsorption isotherms and equilibrium reactions", 60, pp.1525~1533 (2005)
- "Environmental Soil Chemistry", pp.42~43 (1995), Academic Press Inc.
- "Handbook of Chemistry and Physics", pp.15~16 (1992), CRC Press Inc.
- "Aquatic Chemistry", pp.7~8 (1996)
- "The Chemistry of Aqua Ions" (1997)