Use of CaCl2 modified bentonite for removal of Congo red dye from aqueous solutions

Adsorption characteristics of Cu (II) onto CaCl2 pretreated algerian bentonite

“…The adsorption properties of bentonite can be improved by using pretreatment of calcination or doping with metal ions. In this regard, many researchers devoted to investigate the treatment of bentonite using metal salts such as Mg(OH) 2 [14], Mn(OH) 2 [1], CaCl 2 [15], Ca(OH) 2 [16], FeCl 3 [17], etc. But the use of CaCl 2 pretreated bentonite for heavy metals adsorption is very scarce in the existing literature.…”

Development of a polyaniline-lignocellulose composite for optimal adsorption of Congo red

“…Researchers working on remediation of dye-containing wastewater reported different kind of adsorbents including metal oxides [11,[15][16][17][18], graphene-based adsorbents [12,[19][20][21], zeolites [22][23][24][25] and other adsorbents [8,10,13,[26][27][28].…”

Thermodynamic and Isothermal Studies of Congo RedAdsorption onto Modified Bentonite

“…The desirable properties of bentonite can be further improved by activation. In an earlier study, bentonite was modified with CaCl 2 , and used to remove CR from the textile industry effluent [24]. Several other studies have reported the successful removal of CR through adsorption onneem (Azadirachtaindica) leaf powder [25], chitosan hydrobeads [26], waste orange peel [27], and coal-based activated carbons [28].…”