Journal ArticleDOI
Removal of lead and copper metal ions in single and binary systems using biopolymer modified spinel ferrite
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In this article, Zinc Ferrite-Alginate beads (ZFN-Alg beads) were prepared and characterized by Fourier Transform-Infra Red (FT-IR); X-Ray Diffraction (XRD); Scanning Electron Microscope (SEM); Energy Dispersive Spectra (EDS); Thermogravimetric-Differential Thermal analysis (TG-DTA); Brunauer-Emmett-Teller (BET) and pH point zero charge (pHPZC) method.Abstract:
In present study, Zinc Ferrite-Alginate beads (ZFN-Alg beads) were prepared and characterized by Fourier Transform-Infra Red (FT-IR); X-Ray Diffraction (XRD); Scanning Electron Microscope (SEM); Energy Dispersive Spectra (EDS); Thermogravimetric-Differential Thermal analysis (TG-DTA); Brunauer-Emmett-Teller (BET) and pH point zero charge (pHPZC) method. The adsorption of Pb(II) and Cu(II) ions on ZFN-Alg beads as function of contact time, varying pH, adsorbent dose, initial concentration at different temperatures were investigated in single as well as binary system through batch mode. The adsorption kinetic data of Pb(II) and Cu(II) ions in both type of systems was well followed by the Lagergren pseudo second order model. Among different isotherm models, the equilibrium data was well correlated by Langmuir isotherm model in single as well as binary system. In single system, the maximum adsorption capacities of Pb(II) and Cu(II) ions for ZFN-Alg beads were 108.8, 106.6 mg/g and for binary system were 68.6 and 48.0 mg/g, respectively. For both types of systems, the calculated adsorption thermodynamic parameters indicated that the adsorption process was spontaneous and exothermic in nature. The regeneration performance of ZFN-Alg beads was examined in both types of systems up to five cycles. The results revealed that ZFN-Alg beads were retained around 80% regeneration efficiency even after five successive cycles in both types of systems. The present study concluded that magnetic biopolymer beads might be suitable and cost effective alternative for removal of Pb(II) and Cu(II) metal ions from single as well as binary system.read more
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Tuning of Fly Ash Loading into Chitosan-Ethylene Glycol Diglycidyl Ether Composite for Enhanced Removal of Reactive Red 120 Dye: Optimization Using the Box–Behnken Design
TL;DR: In this article, a crosslinked chitosan-ethylene glycol diglycidyl ether (CTS-EGDE) was modified by loading fly ash (FA) particles into its polymeric matrix to improve the adsorptive removal of reactive red 120 (RR120) dye.
Journal ArticleDOI
Alginate-based adsorbents for removal of metal ions and radionuclides from aqueous solutions: A review
TL;DR: In this article, the authors provide relevant and recent literature regarding the application of alginate and its derivatives on removal of various heavy metal ions and radionuclides in water bodies and discuss the effects of process variables such as solution pH, adsorbent dosage, metal ion concentration, contact time, temperature and coexisting ions used in batch studies.
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Green synthesis, structure, cations distribution and bonding characteristics of superparamagnetic cobalt-zinc ferrites nanoparticles for Pb(II) adsorption and magnetic hyperthermia applications
Tetiana Tatarchuk,Alexander Shyichuk,Zbigniew Sojka,Joanna Gryboś,Mu. Naushad,Mu. Naushad,Volodymyr Kotsyubynsky,Maria Kowalska,Sylwia Kwiatkowska-Marks,Nazarii Danyliuk +9 more
TL;DR: In this paper, a simple green method for the synthesis of cobalt-zinc ferrites nanoparticles has been proposed, which can be used in magnetic hyperthermia applications and Pb(II) adsorption.
Journal ArticleDOI
Tuning the composition of new brushite/vivianite mixed systems for superior heavy metal removal efficiency from contaminated waters
M.K. Ahmed,S.F. Mansour,S.F. Mansour,Rania Ramadan,M. Afifi,Mervat S. Mostafa,S.I. El-Dek,Vuk Uskoković +7 more
TL;DR: In this article, brushite nanoparticles were supplemented with vivianite as another metal phosphate phase and the resulting material was studied at different concentrations of the respective phases (x = 0.0, 0.2,0.4, 1.8 and 1.0 in FexCa1−xHPO4·2H2O).
Journal ArticleDOI
Review on biopolymers and composites - Evolving material as adsorbents in removal of environmental pollutants.
TL;DR: In this article , a review of biopolymers and composites as suitable adsorbent material for removing pollutants present in the environment is presented, where the authors focus on the biopolymer and their composites and their potential applications.
References
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