Characterization of activated carbon obtained from Saudi Arabian fly ash

被引：13
作者：
Mofarrah, A. [1 ]
Husain, T. [1 ]
Bottaro, C. [2 ]
机构：
[1] Mem Univ Newfoundland, Dept Civil Engn, St John, NF A1B 3X5, Canada
[2] Mem Univ Newfoundland, Dept Chem, St John, NF A1B 3X7, Canada
来源：
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY | 2014年 / 11卷 / 01期
基金：
加拿大自然科学与工程研究理事会;
关键词：
Chemical activation; Factorial design; Surface area; Unburned carbon; FACTORIAL DESIGN; OIL; CATALYSTS; RECOVERY; COAL;
D O I：
10.1007/s13762-013-0370-5
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
This study investigated the potential application of heavy oil burning fly ash as a precursor to prepare activated carbon. The raw fly ash obtained from a power plant is cleaned by nitric acid/hydrochloric acid and activated at 550-800 degrees C with hold times of 30 and 60 min to obtain fly ash activated carbon. The phosphoric acid is used as a chemical agent to improve the surface characteristics of the cleaned fly ash. The effects of process variables such as amount of chemical reagents, activation time and temperature were investigated according to two-levels full factorial design. The resultant activated carbons were characterized in terms of Brunauer, Emmett and Teller surface area and total and pore volume. The maximum specific surface area was found of 148.30 m(2)/g at 800 degrees C temperatures with 60 min holding time. The test showed that the surface area and pore volumes of the material are also significantly enhanced by the activation process.
引用
收藏
页码：159 / 168
页数：10
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