Organic acids pretreatment effect on Rosa bourbonia phyto-biomass for removal of Pb(II) and Cu(II) from aqueous media

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作者：

Q Manzoor，R Nadeem，M Iqbal，R Saeed，TM Ansari

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摘要：

The sorption of Pb(II) and Cu(II) form aqueous media byRosa bourboniawaste phyto-biomass (RBWPB) pretreated with organic acids was investigated as a function of biosorbent dosage, initial metal ions concentration and contact time. The equilibrium biosorption data was analyzed using two kinetic models (pseudo-first order and pseudo-second order) and two isotherm models (Langmuir and Freundlich). The RBWPB was successfully applied for sequestration of both heavy metal ions; however, organic acids pretreatments decreased the metal adsorption capacity of RBWPB. The Langmuir model fitted well to the data, and the pseudo-second order kinetic equation could best describe the biosorption kinetics of Pb(II) and Cu(II) metal ions. Gibbs free energy indicated the spontaneous adsorption of Pb(II) and Cu(II) onto RBWPB.

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关键词：

Heavy metals Rose waste biomass Biosorption Kinetic study Isotherms Gibbs free energy

DOI：

10.1016/j.biortech.2013.01.156

被引量：

140

年份：

2013