Kabbashi Nassereldeen A, Atieh Muataz A, Al-Mamun Abdullah, Mirghami Mohamed E S, Alam M D Z, Yahya Noorahayu
Bio-Environmental Research Unit, Department of Biotechnology Engineering, International Islamic University Malaysia, Jalan Gombak 50728, Malaysia.
J Environ Sci (China). 2009;21(4):539-44. doi: 10.1016/s1001-0742(08)62305-0.
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 Xm = 102.04 mg/g). The results indicates that the highest percentage removal of Pb (96.03%) can be achieved at pH 5, 40 mg/L of CNTs, contact time 80 min, and agitation speed 50 r/min.
研究了碳纳米管（CNTs）对水溶液中铅（Pb）的吸附能力。进行了批量模式吸附实验，以确定pH值、搅拌速度、碳纳米管用量和接触时间的影响。在pH值为5或碳纳米管用量为40 mg/L时，Pb（II）的去除率分别达到最大值85%或83%。朗缪尔等温线模型的相关系数较高，表明Pb（II）在碳纳米管表面有强烈吸附（吸附容量Xm = 102.04 mg/g）。结果表明，在pH值为5、碳纳米管用量为40 mg/L、接触时间为80分钟和搅拌速度为50转/分钟时，Pb的去除率最高可达96.03%。
