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RESEARCH PRODUCT
Design, characterization and evaluation of hydroxyethylcellulose based novel regenerable supersorbent for heavy metal ions uptake and competitive adsorption
Wolfgang TremelAzhar AbbasMuhammed Nawaz TahirMuhammad IrfanMuhammad SherSyed Zajif HussainMuhammad Ajaz HussainIrshad Hussainsubject
SorbentMetal ions in aqueous solutionInorganic chemistry02 engineering and technology010501 environmental sciences01 natural sciencesBiochemistryWater Purificationsymbols.namesakeStructural BiologyMetals HeavyGalvanic cellFourier transform infrared spectroscopyCelluloseMolecular Biology0105 earth and related environmental sciencesAqueous solutionIon exchangeChemistryTemperatureLangmuir adsorption modelSorptionGeneral MedicineHydrogen-Ion Concentration021001 nanoscience & nanotechnologyKineticsDrug DesignsymbolsAdsorption0210 nano-technologyWater Pollutants Chemicaldescription
Abstract Hydroxyethylcellulose succinate-Na (HEC-Suc-Na) was designed and evaluated for removal of some heavy metal ions from aqueous solution. Pristine sorbent HEC-Suc-Na was thoroughly characterized by FTIR and solid-state CP/MAS 13C NMR spectroscopy, SEM-EDS and zero point charge analyses. Langmuir isotherm, pseudo second order kinetic and ion exchange models provided best fit to the experimental data of sorption of metal ions. Maximum sorption capacities of supersorbent HEC-Suc-Na for sorption of heavy metal ions from aqueous solution as calculated by Langmuir isotherm model were found to be 1000, 909.09, 666.6, 588 and 500 mg g−1 for Pb(II), Cr(VI), Co(II), Cu(II) and Ni(II), respectively. Competitive sorption of these heavy metal ions was carried out from galvanic and nuclear waste water simulated environment. The negative values of ΔG° and ΔH° indicated spontaneity and exothermic nature of sorption. The sorbent was efficiently regenerated with no significant decrease in sorption capacity after five cycles.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-09-01 | International Journal of Biological Macromolecules |