Adsorption of arsenic ions on Brazilian sepiolite: Effect of contact time, pH, concentration, and calorimetric investigation

Adsorption of copper and zinc onto natural clay in single and binary systems

“…Adsorption is the most preferred method for removal of heavy metals from aqueous solutions due to its simplicity and its high A. T. Sdiri (&) Á T. Higashi Faculty of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8572, Japan e-mail: alisdiri@yahoo.fr effectiveness (Sdiri et al 2011(Sdiri et al , 2012a. In this regards, multiple researchers studied the effectiveness of various type of clay in removing heavy metals from aqueous solutions including kaolinite (Sari et al 2007;Schaller et al 2009), bentonite (Ulmanu et al 2003;Kaya and Hakan Ö ren 2005;Eren et al 2009), illite (Ozdes et al 2011), sepiolite (Guerra et al 2010), montmorillonite (Lin and Juang 2002), and other adsorbents (Al-Degs et al 2006;Engates and Shipley 2011). Many other studies have been undertaken to evaluate the adsorptive capacity of various bioadsorbents in the removal of inorganic pollutants (Ahmad et al 2010;Das 2012;Dubey and Shiwani 2012;Revathi et al 2012;Eren 2010).…”

Evaluating the adsorptive capacity of montmorillonitic and calcareous clays on the removal of several heavy metals in aqueous systems

“…The use of natural adsorbents is particularly beneficial for the development of cost effective process for heavy metal removal from wastewater. In this regards, many previous works have been undertaken to study the efficiency of various type of clay including kaolinite [1,2], bentonite [3,4], sepiolite [5], montmorillonite [6] and other natural adsorbents [7].…”

Competitive Removal of Heavy Metals from Aqueous Solutions by Montmorillonitic and Calcareous Clays

“…The use of natural adsorbents is particularly beneficial for the development of cost effective process for heavy metal removal from wastewaters. In this regards, multiple researchers studied the effectiveness of various type of clay in removing heavy metals from aqueous solutions, including kaolinite (Sari et al 2007a;Schaller et al 2009), Celtek clay (Sari et al 2007b), bentonite (Ulmanu et al 2003; Kaya and Hakan Ören 2005), sepiolite (Guerra et al 2010), montmorillonite (Lin and Juang 2002) and other natural adsorbents (Al-Degs et al 2006).…”