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Numerous adsorbents for the removal of heavy metals from aqueous solutions are in various stages ... more Numerous adsorbents for the removal of heavy metals from aqueous solutions are in various stages of research. The main goal for most of this research is to develop low-cost and environmentally friendly materials for the removal of heavy metals from contaminated groundwater, surface water, and drinking water. Materials that have ion exchange sites are expected to be able to efficiently remove heavy metals from water. Iron oxides, especially in the micro/nano structured forms, are good candidates for the removal of toxic heavy metal ions from water due to their structural properties. In the present work the efficiency of synthesized micro/nano particles of goethite and hematite for the removal of Cr(III), Co(II) , Cu(II), Ni(II) and Zn(II) ions from water was compared. The absorbent capability of goethite as a function of pH, contact time, and initial metal ion concentration was studied. The results showed that maximum absorption for all metal ions using goethite occurred at a pH=5.3,...

Numerous adsorbents for the removal of heavy metals from aqueous solutions are in various stages ... more Numerous adsorbents for the removal of heavy metals from aqueous solutions are in various stages of research. The main goal for most of this research is to develop low-cost and environmentally friendly materials for the removal of heavy metals from contaminated groundwater, surface water, and drinking water. Materials that have ion exchange sites are expected to be able to efficiently remove heavy metals from water. Iron oxides, especially in the micro/nano structured forms, are good candidates for the removal of toxic heavy metal ions from water due to their structural properties. In the present work the efficiency of synthesized micro/nano particles of goethite and hematite for the removal of Cr(III), Co(II) , Cu(II), Ni(II) and Zn(II) ions from water was compared. The absorbent capability of goethite as a function of pH, contact time, and initial metal ion concentration was studied. The results showed that maximum absorption for all metal ions using goethite occurred at a pH=5.3,...

Numerous adsorbents for the removal of heavy metals from aqueous solutions are in various stages ... more Numerous adsorbents for the removal of heavy metals from aqueous solutions are in various stages of research. The main goal for most of this research is to develop low-cost and environmentally friendly materials for the removal of heavy metals from contaminated groundwater, surface water, and drinking water. Materials that have ion exchange sites are expected to be able to efficiently remove heavy metals from water. Iron oxides, especially in the micro/nano structured forms, are good candidates for the removal of toxic heavy metal ions from water due to their structural properties. In the present work the efficiency of synthesized micro/nano particles of goethite and hematite for the removal of Cr(III), Co(II) , Cu(II), Ni(II) and Zn(II) ions from water was compared. The absorbent capability of goethite as a function of pH, contact time, and initial metal ion concentration was studied. The results showed that maximum absorption for all metal ions using goethite occurred at a pH=5.3,...

Numerous adsorbents for the removal of heavy metals from aqueous solutions are in various stages ... more Numerous adsorbents for the removal of heavy metals from aqueous solutions are in various stages of research. The main goal for most of this research is to develop low-cost and environmentally friendly materials for the removal of heavy metals from contaminated groundwater, surface water, and drinking water. Materials that have ion exchange sites are expected to be able to efficiently remove heavy metals from water. Iron oxides, especially in the micro/nano structured forms, are good candidates for the removal of toxic heavy metal ions from water due to their structural properties. In the present work the efficiency of synthesized micro/nano particles of goethite and hematite for the removal of Cr(III), Co(II) , Cu(II), Ni(II) and Zn(II) ions from water was compared. The absorbent capability of goethite as a function of pH, contact time, and initial metal ion concentration was studied. The results showed that maximum absorption for all metal ions using goethite occurred at a pH=5.3,...

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