Removal of Heavy Metals by Adsorption onto Activated Carbon Derived from Pine Cones of Pinus roxburghii

被引：20
|
作者：
Saif, Muhammad Jawwad [1 ]
Zia, Khalid Mahmood [1 ]
Fazal-ur-Rehman [1 ]
Usman, Muhammad [2 ]
Hussain, Abdullah Ijaz [1 ]
Chatha, Shahzad Ali Shahid [1 ]
机构：
[1] Univ Faisalabad, Govt Coll, Dept Chem, Faisalabad, Pakistan
[2] Univ Faisalabad, Govt Coll, Dept Chem, Faisalabad, Pakistan
来源：
WATER ENVIRONMENT RESEARCH | 2015年 / 87卷 / 04期
关键词：
Activated carbon; pine cone; adsorption; removal of heavy metals; LOW-COST ADSORBENTS; AQUEOUS-SOLUTION; WASTE-WATER; CHROMIUM(VI); BIOSORPTION; ISOTHERMS; IONS; WOOD;
D O I：
10.2175/106143015X14212658613433
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Activated carbon derived from cones of Pinus roxburghii (Himalayan Pine) was used as an adsorbent for the removal of copper, nickel and chromium ions from waste water. Surface analysis was carried out to determine the specific surface area and pore size distribution of the pine cone derived activated carbon. Optimal parameters, effect of adsorbent quantity, pH, equilibrium time, agitation speed and temperature were studied. Equilibrium data were evaluated by Langmuir and Freundlich isotherm models. Langmuir isotherm afforded the best fit to the equilibrium data with a maximum adsorption capacity of 14.2, 31.4 and 29.6 mg/g for Cu(II), Ni(II) and Cr(VI) respectively. Maximum adsorption of Cu(II), Ni(II) was observed in the pH range 4.0 to 4.5, whereas the best adsorption of Cr(VI) was observed at pH 2.5. It was found that 180 minutes was sufficient to gain adsorption equilibrium. The adsorption process follows a pseudo-second-order kinetic model.
引用
收藏
页码：291 / 297
页数：7
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