Biosorption of heavy metal ions from aqueous solution by an invasive alien plant lva Xanthifolia Nutt biomass
In this study,batch adsorption experiments were carried out for the biosorption of Cd2+ and Pb2+ from aqueous solutions by the invasive alien plant Iva Xanthifolia Nutt (IXN) biomass as adsorbent.Parameters effects such as contact time,pH,initial metal ions concentration,and biomass concentration on the biosorption process were studied.The Langmuir biosorption isotherm was applied to correlate the equilibrium data and fitted quite well.The maximum biosorption capacities for two metal ions were 30.35 mg Cd2+/g and 39.68 mg Pb2+/g,respectively.XRD studies combined with FTIR spectroscopy have also been investigated to represent the biosorption mechanism.Thermodynamic parameters such as enthalpy change (ΔH0),entropy change (ΔS0) and free energy change (ΔG0) were calculated for predicting the nature of biosorption.This study proved that the invasive alien plant IXN can be used as an effective,low-cost and abundant absorbent for the treatment of Cd2+ and Pb2+ containing wastewater.
Invasive alien plant Iva xanthifolia Nutt heavy metal ions biosorption
Yuangang Zu Zhiguang Ren Xiuhua Zhao Peng Xiao Yao Zhang
Key Laboratory of Forest Plant Ecology,Northeast Forestry University,Ministry of Education,Harbin,Heilongjiang 150040,China
国际会议
哈尔滨
英文
1464-1467
2010-07-24（万方平台首次上网日期，不代表论文的发表时间）