Urban Wastewater Treatment by Adsorption of Organic Matters on Modified Bentonite by (Iron-Aluminum)

Abstract

In this research, the natural bentonite clay (from Maghnia, western Algeria) was purified (Na +montmorillonite, CEC = 91 meq/100 g), noted (puri.bent) and modified with mixed hydroxy-Fe-Al (FeAl-PILC). The purified bentonite clay and FeAl-PILC were heated at 383 K for 2 hr and characterized by the chemical analyses data, XRD, and N 2 adsorption to 77 K techniques. Puri.bent and FeAl-PILC were applied to fix the organic matter (OM) present in urban wastewater from the city of Sidi Bel-Abbes (western Algeria). The adsorption of organic matter was followed by spectrophotometry at 470 nm, and the adsorption data were a good fit with Freundlich isotherm for puri.bent but for FeA-lPILC, were well fit by Elovitch isotherm model. The maximum adsorption capacity (q m) was 571.6 mg/g for puri.bent and 1120.69 mg/g for FeAl-PLC. The degree of OM removal was 67% for puri.bent and 97% for FeAl-PILC. FeAl-PILC can be considered as a promising adsorbent for the removal of OM from wastewater.

Cellulose acetate/sodium-activated natural bentonite clay nanofibres produced by free surface electrospinning

“…Owing to its adsorptive and absorptive capabilities and cation exchange capacity, it has been applied in health care for a variety of purposes including wound healing and infection control [53][54][55], skin protection [56], cosmetics [57] and rheumatism treatment [58]. Moreover, BC has been applied in heavy metal ion adsorption [59] and removal of organic pollutants from water [60]. BC based on the dominant exchangeable cations present is referred to as either calcium, sodium or potassium bentonite [61,62].…”