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In the present work detailed studies were carried out to understand the effect of adsorbent dose [Ball clay], temperature on kinetics, and competing anion concentrations. Characterization studies on the adsorbent by XRD, SEM and FT-IR analysis before and after fluoride adsorption were carried out to understand the adsorption mechanism. XRD and FT-I...
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A new adsorbent of arsenic was synthesized to treat arsenic bearing contaminated water. Strong anion resins 201x7 and D301 resins were chosen as carriers to synthesized hydrated ferrous oxide loaded on polymeric substrate. Results showed that 201x7 and D301 had exchange capacities of 1.20 mg/g and 0.78 mg/g on arsenic, respectively; modified adsorb...
Studies were carried out to remove uranium from aqueous systems based on the solid phase extraction of uranium by powdered chitin. The effects of various parameters like pH, contact time, and amount of chitin for quantitative sorption of uranium on chitin have been studied. The sorption studies with spiked water samples and natural ground water sam...
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... It is mostly composed of SiO 2 and Al 2 O 3 . As noted above, with low content of oxide impurities (as Fe 2 O 3 and TiO 2 ), BC has many applications such as in ceramics (Thirumoorthy and Krishna, 2020), and wastewater treatment for the removal of certain heavy metals such as Cr 2+ , Zn 2+ , Cu 2+ , Cd 2+ , Pb 2+ , and Ni 2+ (Sundar et al., 2011;Rao and Kashifuddin, 2016;Chantawong et al., 2003). ...
Surface modification of ball clay was produced by gamma irradiation of a mixture containing ball clay (BC), acrylic acid (AA), phosphoric acid (PA), and N,N`-methylenebisacrylamide (DAM) solution to produce a composite sorbent (BC-AA-PA). Both BC and BC-AA-PA composite were characterized using SEM, FT-IR, XRD, and XRF. Comparative evaluation of both materials for the sorption of gadolinium and cerium ions was explored. The outcomes exposed that the removal percentage enhanced from 38.2% to 91% and from 24.9% to 88% for gadolinium and cerium ions by BC and BC-AA-PA, respectively. The proposed sorption mechanism illustrated that the sorption occurs by an ion exchange process. Sorption kinetics, equilibrium isotherm, and desorption studies were conducted. The sorption obeyed the pseudo-second-order model and Langmuir isotherm model. The comparison of sorption capacity of BC-AA-PA with other sorbents in the literature indicated that BC-AA-PA has a much higher sorption capacity than many sorbents (1.085 and 0.907 mmol/g for Gd³⁺ and Ce³⁺, respectively). Desorption of gadolinium and cerium ions from BC-AA-PA was investigated; the results certified that 0.1 M HNO3 is the best eluent with a percentage of 99.99 and 92% for Ce³⁺ and Gd³⁺, respectively, and the BC-AA-PA can be applied for further sorption processes. Hence, BC-AA-PA composite sorbent is recommended for the sorption of lanthanides from the liquid phase.
