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| 1 | Pb(Ⅱ) biosorption using chitosan and chitosan derivatives beads: Equilibrium, ion exchange and mechanism studies显示文摘The study examined the adsorption of Pb(II) ions from aqueous solution onto chitosan, chitosan-GLA and chitosan-alginate beads. Several important parameters influencing the adsorption of Pb(II) ions such as initial pH, adsorbent dosage and different initial concentration of Pb(II) ions were evaluated. The mechanism involved during the adsorption process was explored based on ion exchange study and using spectroscopic techniques. The adsorption capacities obtained based on non-linear Langmuir isotherm for chitosan, chitosan-GLA and chitosan-alginate beads in single metal system were 34.98, 14.24 and 60.27 mg/g, respectively. However, the adsorption capacity of Pb(II) ions were reduced in the binary metal system due to the competitive adsorption between Pb(II) and Cu(II) ions. Based on the ion exchange study, the release of Ca2+, Mg2+, K+ and Na+ ions played an important role in the adsorption of Pb(II) ions by all three adsorbents but only at lower concentrations of Pb(II) ions. Infrared spectra showed that the binding between Pb(II) ions and the adsorbents involved mostly the nitrogen and oxygen atoms. All three adsorbents showed satisfactory adsorption capacities and can be considered as an efficient adsorbent for the removal of Pb(II) ions from aqueous solutions. | W. S. Wan Ngah S. Fatinathan | 2010 | Journal of Environmental Sciences2010，22，3： | 19 |
| 2 | Chitosan flakes and chitosan-GLA beads for adsorption of p-nitrophenol in aqueous solution显示文摘 | WAN NGAH W S FATINATHAN S | 2006 | Colloids and Surfaces A:Physicochemical and Engineering Aspects2006，277，5： | 1 |
| 3 | Adsorption characterization of Pb ( Ⅱ ) and Cu( Ⅱ) ions onto chitosan-tripolyphosphate beads: Kinetic, equilibrium and thermodynamic studies 显示文摘 | Ngah W S Fatinathan S | 2010 | Journal of Environmental Management2010，91，： | 1 |
| 4 | Adsorption characterization of Pb ( I1 ) and Cu ( ]I ) ions onto chitosan- tripolyphosphate beads: Kinetic, equilibrium and thermodynamic studies显示文摘 | Ngah W Fatinathan S | 2010 | Journal of environmental management2010，91，4： | 1 |
| 5 | Adsorption of Cu(Ⅱ)ionsin aqueous solution using chitosan beads, chitosan-GLAbeads and chitosan-alginate beads显示文摘 | Wan Ngah W S Fatinathan S | 2008 | Chemical Engineer-ing Journal2008，143，： | 1 |
| 6 | Adsorption characteriza-tion of Pb(Ⅱ)and Cu(Ⅱ)ions onto chitosan-tri-polyphosphate beads: kinetic,equilibrium and thermody-namic studies显示文摘 | Wan Ngah W S Fatinathan S | 2010 | Journal of Environmental Manage-ment2010，91，： | 1 |
| 7 | Adsorption of Cu(Ⅱ) Ions in Aqueous Solution Using Chitosan Beads,Chitosan-GLA Beads and Chitosan-Alginate Beads显示文摘 | NgahW S W Fatinathan S | 2008 | Chemical Engineering Journal2008，143，123： | 1 |
| 8 | Adsorption characterization of Pb(II) and Cu(II) ions onto chitosan-tripolyphosphate beads: Kinetic, equilibrium and thermodynamic studies显示文摘 | W.S. Wan Ngah S. Fatinathan | 2009 | Journal of Environmental Management2009，，4： | 1 |
| 9 | Chitosan flakes and chitosan-GLAbeads for adsorption of p-nitrophenol in aqueous solution显示文摘 | Wan Ngah W S Fatinathan S | | 0，，： | 1 |
| 10 | Adsorption of Cu(ll) ions in aqueous solution using chitosan beads, chitosan-GLA beads and chitosan-alginate beads 显示文摘 | WAN NGAH W S FATINATHAN S | 2008 | Chemical Engineering Journal2008，143，1： | 1 |
| 11 | Isotherm and kinetic studies on the adsorption of humic acid onto chitosan-H2SO4 beads显示文摘 | Ngah W S W Fatinathan S Yosop N A | 2011 | Desalination2011，272，13： | 1 |
| 12 | Isotherm and kinetic studies on the adsorption of humic acid onto ehitosan-H2SO4 beads显示文摘 | Wan Ngah W S Fatinathan S Yosop N A | | 0，，1： | 1 |
| 13 | Adsorption characterization of Pb(Ⅱ) and Cu(Ⅱ) ions onto chitosan-tripolyphosphate beads:Kinetic,equilibrium and thermodynamic studies显示文摘 | Wan W S Fatinathan N S | 2010 | Journal of Environmental Management2010，，91： | 1 |
| 14 | Adsorption of Cu(II) ions in aqueous solution using chitosan beads, chitosan–GLA beads and chitosan–alginate beads显示文摘 | W.S. Wan Ngah S. Fatinathan | 2007 | Chemical Engineering Journal2007，，1： | 1 |
| 15 | Adsorption of chromium from aqueous solution using chitosan beads 显示文摘 | W S W Ngah A Kamati S Fatinathan | 2006 | Adsorption-Joumal of the International Adsorption Society2006，12，4： | 1 |
| 16 | Adsorption characterization of Pb(11) and Cu(11) ions beads: kinetic, equilibrium and thermodynamic studies显示文摘 | Wan Ngah WS Fatinathan S | | Journal of Environmental0，，： | 1 |
| 17 | Adsorption characterization of Pb(11) and Cu(11) ions onto chitosan-tripolyphosphate beads: kinetic, equilibrium and thermodynamic studies显示文摘 | Wan Ngah WS Fatinathan S | 2010 | Journal of Environmental Management2010，91，4： | 1 |
| 18 | Chitosan flakes andchitosan-GLA beads for adsorption of p-nitrophenol in aqueous solution显示文摘 | Wanngah W S Fatinathan S | 2006 | Colloids and Surfaces A: Physicochemical and Engineering Aspects2006，277，13： | 1 |
| 19 | Chitosan flakes and chitosan- GLA beads for adsorption of p-nitrophenol in aqueous solution 显示文摘 | NGAH W S FATINATHAN S | 2006 | Colloids and Surfaces A: Physicoehemical and Engineering Aspects2006，277，1： | 1 |
| 20 | Adsorption of Cu( Ⅱ ) ions in aqueous solution using chitosan beads, chitosan-GLA beads and chitosan-alginate beads 显示文摘 | NGAH W S FATINATHAN S | 2008 | Chemical Engineering Journal2008，143，123： | 1 |
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