Zeolitic material synthesised from fly ash: use as cationic exchanger

Abstract

The potential use as a`once through' cation exchanger of a zeolitic material (NaP1 zeolite as the main active component) synthesised from¯y ash has been evaluated and compared with a commercial weak acid exchanger, Amberlite IRC-50. The ). When solutions containing all the metallic cations were used, lower retention capacities were obtained for both exchangers.

Factors affecting the sorption of trivalent chromium by zeolite synthesized from coal fly ash

“…However, the previous studies dealing with the removal of heavy metals by ZFA have been performed by using only one or two ZFAs [4][5][6][7][8][9][10][11][12][13][14]. Therefore, it is difficult to explore the relative importance of different components of ZFA in heavy metal retention by relating the heavy metal removal performance of the ZFAs to their chemical composition and properties.…”

“…However, a large proportion of fly ash is impounded or landfilled. In recent years, the hydrothermal synthesis of zeolite has been intensively investigated as an alternative for the productive reuse of coal fly ash [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] and other inorganic materials [21][22][23].…”

Removal of Copper(II) and Zinc(II) Ions From Aqueous Solution by Chemical Treatment of Coal Fly Ash

“…[10][11][12] Hence, coal fly ash and its fly ashderived zeolite can be candidate materials for heavy metals removal. [13][14][15][16][17][18] Adsorption is probably one of the most attractive, simple and efficient processes and consequently, the commonly used in industry, because of its simple and efficient application. [19][20][21][22][23] Thus, there is a growing demand to find low-cost and efficient adsorbent for the adsorption of heavy metal ions.…”

Coal fly ash supported nZnO for the sorption of triphenyltin chloride/

“…Owing to the high silica and alumina content, CFA can be converted into zeolite-like crystalline materials by chemical treatment, and would fi nd use as adsorbents and ion exchangers in water and wastewater treatment (Juan et al 2002, Penilla et al 2006). Rohatgi et al 2006 reported the application of CFA as composites in reinforced glass and polymer matrix, composites with metals while Wang, 2008 andDunens et al 2009 reported its application as catalyst supports.…”