화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.19, No.6, 2092-2099, November, 2013
DOI10.1016/j.jiec.2013.03.025  Export Citation
Preparation, modification and industrial application of activated carbon from almond shell
Abdessalem Omri†, Mourad Benzina, and Najwa Ammar1
  • Laboratory of Water-Energy-Environment (LR3E), Code: AD-10-02, National School of Engineers of Sfax, University of Sfax, BP W, 3038 Sfax, Tunisia
  • 1Tunisian Chemical Group, Sfax – Tunisia, BP 393/3018, Tunisia
E-mail:
Almond shell was used to prepare activated carbon using physical activation method, consisted of carbon dioxide (CO2) gasification. The effects of the preparation variables which were activation temperature, activation time and carbon dioxide flow rate on the adsorption capacity of iodine and methylene blue solution were investigated. The optimal activated carbon was obtained by these conditions as follows: 800 8C activation temperature, 100 cm3/min carbon dioxide flow rate and 120 min activation time. The characterization of carbon materials is performed by scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), 13C (CP/MAS and MAS) solid-state NMR, nitrogen adsorption (BET) and Boehm’s titration method. For an industrial application, the optimal activated carbon was ammoxidated to improve its adsorption capacity toward total organic carbon from Tunisian industrial phosphoric acid. The influence of experimental parameters such as specific consumption, initial concentration, contact time, agitation speed and temperature on TOC removal was studied.
Keywords:Almond shell;Activated carbon;Characterization;Ammoxidation;Total organic carbon
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