TAILIEUCHUNG - Activated Carbon Prepared from Rice Husk: Nitric Acid Modification and BTX Adsorption

The aim of this work is to evaluate the elimination of BTX by activated carbons prepared from rice husk. The effects of surface modification on the specific surface area, pore texture and adsorption capacity of the AC samples have been examined. | 39362 Khu Le Van and Thu Thuy Luong Thi Elixir Materials Science 93 2016 39362-39366 Available online at Elixir International Journal Materials Science Elixir Materials Science 93 2016 39362-39366 Activated Carbon Prepared from Rice Husk Nitric Acid Modification and BTX Adsorption Khu Le Van and Thu Thuy Luong Thi Faculty of Chemistry Hanoi National University of Education 136 Xuan Thuy Street Cau Giay District Hanoi Vietnam. ARTICLE INFO AB S T RA C T Art i cl e h i sto ry Activated carbons ACs prepared from rice husk by KOH activation in inert atmosphere Received 19 February 2016 at 750 and 850oC were modified with nitric acid. Activation at 850 oC resulted in better Received in revised form pore development and was confirmed by SEM Boehm titration and BET. The 26 March 2016 modification by nitric acid could reduce the particle size while enhance the amount of Accepted 1 April 2016 hydroxyl and carbonyl groups on the surface of AC samples. Bath adsorption of benzene toluene and m-xylene BTX as well as dynamic adsorption of m-xylene were measured K ey w o rd s in order to evaluate the performance of AC for removing volatile organic compounds Rice Husk VOCs . The results showed that AC sample prepared at 850 oC RH-850 exhibited the Activated Carbon best benzene adsorption capacity of mmol g-1 in bath adsorption and m-xylene BTX adsorption capacity of mmol g-1 in dynamic adsorption at 50oC. Adsorption 2016 Elixir all rights reserved. Breakthrough Curve. Introduction temperature was raised to 750 or 850oC to activate the Benzene toluene and xylene BTX vapors which are obtained material finally the activated products were ground categorized as volatile organic compounds VOCs have neutralized by HCl washed with distilled water dried at primary and secondary hazardous impacts 1 . Eyes and throat 120oC for 24 h and stored in a desiccator. The final samples irritation kidney or central nervous system damage are were labeled as .

• Môi trường
• Activated Carbon
• Rice Husk
• Nitric Acid Modification
• BTX Adsorption
• Breakthrough Curve
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• cách trình bày báo cáo
• kiến thức vật lý
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