title: Chitosan extraction from lobster shells and its grafted with functionalized MWCNT for simultaneous removal of Pb2+ions and eriochrome cyanine R dye after their complexation.
abstract: Chitosan (CS) extracted from lobster shells (Persian Gulf, Iran), was grafted with amino functionalized multiwalled carbon nanotube (MWCNT). This novel material was characterized by FE-SEM and FT-IR and used for the ultrasound-assisted removal of Pb2+ions and eriochrome cyanine R (ECR) dye. A central composite design (SCCD) under response surface methodology was used for studying the influences of important variables in removal process such as initial ECR and Pb2+ions concentrations, adsorbent mass and sonication time on the removal efficiency. Linear, 2FI, quadratic and cubic models were performed and a quadratic model was selected for analysis of each response. ANOVA for the quadratic model shows the F-value parameter (820.44 and 537.12 for ECR and Pb2+ions removal, respectively) and very low p-value (<0.0001), implying that the model was highly significant for understudy analytes adsorption. To achieve maximum removal, the optimum condition was determined and were set as:19.34 and 18.20mgL-1,0.018g and 9.35min for initial ECR and Pb2+ion concentrations, adsorbent mass and sonication time, respectively. At these optimum conditions, 97.06% of ECR and 99.29% of Pb2+ions were removed in a short time.
authors.affiliation: Department of Chemistry, Yasouj University, Yasouj, 75918-74831, Iran.
authors.forename: Shadi
authors.initials: S
authors.lastname: Kheirandish
authors.affiliation: Department of Chemistry, Yasouj University, Yasouj, 75918-74831, Iran. Electronic address: ghaedi@mail.yu.ac.ir.
authors.forename: Mehrorang
authors.initials: M
authors.lastname: Ghaedi
authors.affiliation: Department of Chemistry, Yasouj University, Yasouj, 75918-74831, Iran.
authors.forename: Kheibar
authors.initials: K
authors.lastname: Dashtian
authors.affiliation: Department of Material Engineering, School of Engineering, Yasouj University, Yasouj, 75918-74934, Iran.
authors.forename: Fatemeh
authors.initials: F
authors.lastname: Heidari
authors.affiliation: Department of Chemistry, Yasouj University, Yasouj, 75918-74831, Iran.
authors.forename: Faezeh
authors.initials: F
authors.lastname: Pourebrahim
authors.affiliation: Department of Chemical Engineering, Curtin University, G.P.O. Box U1987, Perth, Western Australia 6845, Australia.
authors.forename: Shaobin
authors.initials: S
authors.lastname: Wang
mesh_terms: D000327:Adsorption; D060105:Animal Shells / Q000737:chemistry; D000818:Animals; D001557:Benzenesulfonates / Q000737:chemistry* / Q000302:isolation & purification*; D048271:Chitosan / Q000737:chemistry*; D033364:Decapoda / Q000737:chemistry*; D004785:Environmental Pollutants / Q000737:chemistry / Q000302:isolation & purification; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D007854:Lead / Q000737:chemistry* / Q000302:isolation & purification*; D008958:Models, Molecular; D008968:Molecular Conformation; D037742:Nanotubes, Carbon / Q000737:chemistry*; D013997:Time Factors
chemical_list: D001557:Benzenesulfonates; D004785:Environmental Pollutants; D037742:Nanotubes, Carbon; D007854:Lead; C010332:solochrome cyanine R; D048271:Chitosan
keywords: Chitosan; Eriochrome cyanine R; Multiwalled carbon nanotubes; Pb(2+); Quadratic model