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1. Arsenate removal from contaminated water using Fe2O3-clinoptilolite powder and granule

Author

Shamin Hosseini Nami, Maryam Tahmasebpoor, Leila Sanaei, and M. Khatamian

Subjects
Clinoptilolite, Precipitation (chemistry), 0208 environmental biotechnology, Granule (cell biology), Arsenate, Iron oxide, 02 engineering and technology, General Medicine, 010501 environmental sciences, 01 natural sciences, 020801 environmental engineering, Contaminated water, chemistry.chemical_compound, Adsorption, chemistry, Environmental chemistry, Environmental Chemistry, Water treatment, Waste Management and Disposal, 0105 earth and related environmental sciences, Water Science and Technology
Abstract

Natural clinoptilolite (Clin) was modified with iron oxide using three different methods including precipitation, wet-impregnation and ion-exchange and then the modified adsorbent with highest As(V...

Published
2020
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2. Arsenate removal from contaminated water using Fe

Author

Maryam, Tahmasebpoor, Shamin, Hosseini Nami, Masoumeh, Khatamian, and Leila, Sanaei

Subjects
Kinetics, Zeolites, Arsenates, Water, Adsorption, Hydrogen-Ion Concentration, Powders, Water Pollutants, Chemical, Arsenic, Water Purification
Abstract

Natural clinoptilolite (Clin) was modified with iron oxide using three different methods including precipitation, wet-impregnation and ion-exchange and then the modified adsorbent with highest As(V) removal efficiency was encapsulated into Alginate by a simple cross-linking method to obtain Fe-Clin granules. The surface morphology and chemical composition of the Fe-Clin sorbents were characterized by scanning electron microscope and X-ray diffraction analysis. The selected Fe-Clin powders and granules possessed enhanced affinity towards the highly toxic arsenic pollutant in a very short time. Batch adsorption experiments showed that the Fe-Clin adsorbent can be widely used within a wide range of pH (2-9). In addition, to reach a high removal percentage (over 90%) of As(V), the optimum dosage of powder and granule shaped adsorbents was obtained as 0.1 and 0.6 g L

Published
2020

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