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GAS CONDENSATE DESULFURIZATION BY OXIDATION METHOD IN THE PRESENCE OF NANOCLAY AND CHITOSAN ADSORBENT: AN EXPERIMENTAL STUDY |
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| รหัสดีโอไอ | |
| Creator | Parisa Aminirad, Seyed Abolhasan Alavi, Mohammadreza Jafari Nasr |
| Title | GAS CONDENSATE DESULFURIZATION BY OXIDATION METHOD IN THE PRESENCE OF NANOCLAY AND CHITOSAN ADSORBENT: AN EXPERIMENTAL STUDY |
| Contributor | - |
| Publisher | TuEngr Group |
| Publication Year | 2562 |
| Journal Title | International Transaction Journal of Engineering, Management, & Applied Sciences & Technologies |
| Journal Vol. | 10 |
| Journal No. | 13 |
| Page no. | 10A13N: 1-13 |
| Keyword | HDS, Adsorption, Langmuir isotherm, Freundlich isotherm, Adsorption kinetic. |
| URL Website | http://tuengr.com/Vol10_13.html |
| Website title | ITJEMAST V10(13) 2019 @ TuEngr.com |
| ISSN | 2228-9860 |
| Abstract | Oxidative desulfurization process for gas condensate using a mixture of hydrogen peroxide and formic acid have been investigated. Oxidation under optimal conditions accompanied extraction operation using acetonitrile and finally adsorption was performed on clay, nanoclay and novel adsorbent of chitosan nanoclay. By use of oxidation process on feedstock with the initial sulfur amount of 2500 ppm optimum parameters for reaching the minimum sulfur content were derived. Effects of operating parameters such as temperature, the amount of formic acid used as catalyst for oxidation and process time were investigated and the best operating conditions for oxidation were determined by designing the relevant experiments. Adsorption isotherms modeling and also kinetic models has been studied. The best conditions for oxidation were determined as follows: Acid-to-feed ratio =1, Reaction temperature= 50?C, Reaction time= 45 min. After about 30 minutes of adsorption process, the adsorbent was saturated and the increase in contact time had no effect on the removal of sulfur compounds. Adsorption isotherms modeling of common Langmuir and Freundlich models showed that both nanoclay and nanoclay-chitosan adsorbent followed Freundlich's model for adsorption. Studies of three common kinetic models : pseudo- first-order, pseudo- second-order, and intra-particle diffusion model indicated that the kinetics of this adsorption was of the pseudo second order type. This effective way of combination the Oxidation in optimum condition with this sorbent should be used as novel technology of desulfurization in order to achieve the gas condensate with minimum sulfur. |
