Comparative and competitive adsorption of cadmium, copper, nickel, and lead ions by Iranian natural zeolite

The conversion technology of fly ash into zeolites

“…Their structure is built up with a framework of tetrahedral molecules, linked with shared oxygen atoms (Merrikhpour and Jalali 2013). Their crystal structure contains numerous channels and chambers of different sizes (in the order of several angstroms) giving them a range of unique ion-exchange, sorption, molecular-sieve, and catalytic properties (Derkowski et al 2006(Derkowski et al , 2007.…”

“…desulfurization of fuel (Muzic et al 2012) or oil refining (Zhu et al 2013)], and environment engineering [i.e. to remove of ammonium ions (Franus and Wdowin 2010;Liu et al 2012) or heavy metals from waters and waste water (Merrikhpour and Jalali 2013;Wang et al 2009) or separation/adsorption of gases such as CO 2 (Walton et al 2006;Wdowin et al 2012), SO 2 (Yi et al 2012) or mercury (Morency et al 2002), and removal of radionuclides from the mine waters (Chałupnik et al 2013)]. …”

Adsorption of Heavy Metal Ions on Surface of Functionalized Oil Palm Empty Fruit Bunch Fibres: Single and Binary Systems

“…The speciation of metal ions on the fibers has many preferences related to solution chemistry, physicochemical properties of metal ions and characteristics of the binding sites, but these preferences are not conclusive with regard to the selectivity of metal ions on the adsorbent (Mahamadi & Nharingo 2010). Additionally, the different selectivity of the metal ion uptake may be due to specific ion exchange on the EFB fibers, type of metals or different experimental techniques (Merrikhpour & Jalali 2013).…”

“…The competitiveness of adsorbates from ionic interaction and selectivity of the adsorbent (adsorbate charges and radius ions) are the main factors contributing the effect of multi-component adsorption. Since multiple metal ions are more likely to exist in wastewater effluent, various studies have been performed on promising adsorbents for various applications (Akbari et al 2015;Merrikhpour & Jalali 2013;Mohan & Chander 2000;Wang & Li 2009;Xiao & Thomas 2004).…”

Changes in the Textural Parameters of Fly Ash-Derived Na-P1 Zeolite During Compaction Processes

“…Minerals such as zeolites are porous, hydrated, crystalline aluminosilicates of mainly alkali or alkaline earth elements, having a three-dimensional lattice composed of tetrahedrons [AlO 4 ] and [SiO 4 ] connected by their corners (Merrikhpour, Jalali 2012). Their structure is characterized by a regular construction of channels and chambers, which gives them a number of unique qualities including large sorption capacity, ion-exchange, molecular-sieve and catalytic properties.…”