title: Organic acids pretreatment effect on Rosa bourbonia phyto-biomass for removal of Pb(II) and Cu(II) from aqueous media.
abstract: The sorption of Pb(II) and Cu(II) form aqueous media by Rosa bourbonia waste 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.
authors: Department of Chemistry and Biochemistry, University of Agriculture, Faisalabad 38040, Pakistan. qaisar263@yahoo.com
authors: Qaisar
authors: Q
authors: Manzoor
authors: Raziya
authors: R
authors: Nadeem
authors: Munawar
authors: M
authors: Iqbal
authors: Rashid
authors: R
authors: Saeed
authors: Tariq M
authors: TM
authors: Ansari
mesh_terms: D019342:Acetic Acid; D000327:Adsorption / Q000187:drug effects; D019817:Benzoic Acid; D001673:Biodegradation, Environmental; D002264:Carboxylic Acids / Q000378:metabolism* / Q000494:pharmacology; D019343:Citric Acid; D003300:Copper / Q000378:metabolism*; D035264:Flowers / Q000187:drug effects / Q000378:metabolism*; D007700:Kinetics; D007854:Lead / Q000378:metabolism*; D008954:Models, Biological; D012044:Regression Analysis; D027826:Rosa / Q000378:metabolism*; D014874:Water Pollutants, Chemical / Q000378:metabolism*; D018508:Water Purification / Q000379:methods*
chemical_list: D002264:Carboxylic Acids; D014874:Water Pollutants, Chemical; D019343:Citric Acid; D007854:Lead; D003300:Copper; D019817:Benzoic Acid; D019342:Acetic Acid