Adsorption characteristics of ethanol onto functional activated carbons with controlled oxygen content

作者：Uddin Kutub; El Sharkawy Ibrahim I; Miyazaki Takahiko; Saha Bidyut Baran^*; Koyama Shigeru; Kil Hyun Sig; Miyawaki Jin; Yoon Seong Ho

来源：Applied Thermal Engineering, 2014, 72(2): 211-218.

DOI：10.1016/j.applthermaleng.2014.03.062

• Activated carbon
• Adsorption characteristic
• Ethanol
• Isosteric heat of adsorption

The present study aims to investigate adsorption characteristics of ethanol onto activated carbon powders namely; parent Maxsorb III and surface treated Maxsorb III with controlled oxygen content. Experiments have been conducted gravimetrically using a magnetic suspension adsorption measurement unit. The measurements have been conducted within evaporator temperatures range from -14 to 77 degrees C and adsorption temperatures between 20 and 80 degrees C The Dubinin-Astakhov (D-A) adsorption model is found to be suitable to correlate the adsorption isotherm data. The isosteric heat of adsorption of the assorted adsorbent/refrigerant pairs has been estimated using Clausius-Clapeyron and the D-A equations. Effect of the refrigerant purity on the adsorption characteristics of the adsorbent/refrigerant pair is also discussed. The data extracted from this study are useful for the design of adsorption cooling, refrigeration and heat pump systems.

• 出版日期2014-11-22