期刊
JOURNAL OF ENVIRONMENTAL SCIENCES
卷 21, 期 4, 页码 539-544出版社
SCIENCE PRESS
DOI: 10.1016/S1001-0742(08)62305-0
关键词
lead removal; carbon nanotubes; kinetic modeling; adsorption
资金
- Kulliyyah of Engineering (KOE)
- Department of Biotechnology Engineering
- HUM
The capability of carbon nanotubes (CNTs) to adsorb lead (Pb) in aqueous solution was investigated. Batch mode adsorption experiment was conducted to determine the effects of pH, agitation speed, CNTs dosage and contact time. The removal of Pb(II) reached maximum value 85% or 83% at pH 5 or 40 mg/L of CNTs, respectively. Higher correlation coefficients from Langmuir isotherm model indicates the strong adsorptions of Pb(II) on the surface of CNTs (adsorption capacity X-m = 102.04 mg/g). The results indicates that the highest percentage removal of Ph (96.03%) can be achieved at pH 5, 40 mg/L of CNTs, contact time 80 min, and agitation speed 50 r/min.
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