publication . Article . Other literature type . 2013

Carbon dioxide captured by multi-walled carbon nanotube and activated charcoal: A comparative study

Soodabeh Khalili; Asghar Ghoreyshi; Mohsen Jahanshahi;
Open Access English
  • Published: 01 Jan 2013 Journal: Chemical Industry and Chemical Engineering Quarterly (issn: 1451-9372, eissn: 2217-7434, Copyright policy)
  • Publisher: Association of the Chemical Engineers of Serbia
Abstract
this study, the equilibrium adsorption of CO2 on activated charcoal (AC) and multi-walled carbon nanotube (MWCNT) were investigated. Experiments were performed at temperature range of 298-318 K and pressures up to 40 bars. The obtained results indicated that the equilibrium uptakes of CO2 by both adsorbents increased with increasing pressure and decreasing temperature. In spite of lower specific surface area, the maximum amount of CO2 uptake achieved by MWCNT at 298K and 40 bars were twice of CO2 capture by AC (15 mmol.g-1 compared to 7.93 mmol.g-1). The higher CO2 captured by MWCNT can be attributed to its higher pore volume and specific structure of MWCN T suc...
Subjects
free text keywords: Adsorption, CO2, MWCNT, AC, Adsorption isotherms, Isosteric heat, Chemical engineering, TP155-156, Chemical industries, HD9650-9663, General Chemical Engineering, Chromatography, Carbon nanotube, law.invention, law, Freundlich equation, Specific surface area, Atmospheric temperature range, Gas separation, Activated charcoal, Chemistry, Langmuir adsorption model, symbols.namesake, symbols
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