Sorption of Gadolinium (III) Ions by a Natural Clinoptilolite-Containing Tuff

Abstract

<p class="MsoNormal"> <span lang="EN-US">The equilibrium and kinetics of sorption of gadolinium (III) ions from sulfate solutions by a natural clinoptilolite containing tuff are studied. It is shown that gadolinium is completely extracted from dilute solutions (<<st1:chmetcnv unitname="m" sourcevalue=".002" hasspace="True" negative="False" numbertype="1" tcsc="0" w:st="on">0.002 M</st1:chmetcnv>). The kinetic parameters of the sorption process are determined.</span> </p

Anticorrosive paint with a modified zeolite as functional pigment for SAE 1010 steel protection

“…This structure is characterized by the presence of cavities and intercommunicated channels, usually occupied by water molecules and interchangeable extra-reticular cations (Calabrese, 2018). Its properties of high surface area, elevated cation exchange capacity and acidity justify the wide use of zeolites as adsorbents, catalysts, ion exchange agents, antimicrobials (Al-subaie et al , 2015; Rojas-Pavón et al , 2015; Kozhevnikova and Styazhkina, 2013; Stashkiv et al , 2019; Alshameri et al , 2019; Kustovska, 2018; Iyigundogdu et al , 2014; Kabwadza-Corner et al , 2014) and, in our case, as containers that allow a gradual release of corrosion-inhibiting ions (Ahmed et al , 2011; Dias et al , 2012; Ferrer et al , 2014; Shaw and Tiwari, 2016; Dias et al , 2014; Roselli et al , 2014; Roselli et al , 2018; Abd El-Gawad et al , 2019).…”