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

Meçabih Zohra, Jérôme Rose², Daniel Borschneck²

Materials Catalysis Laboratory, Department of Chemistry, University of Sidi Bel-Abbes, Sidi Bel-Abbes, Algeria.
Géoscience de l’Environnement UMR 6635, Cerege, Université Aix-Marseille, Europôle Méditerranéen de l’Arbois III, BP 80 13545 Aix en Provence cedex 4, France.

DOI: 10.4236/jeas.2014.43008                

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 characte-rized by the chemical analyses data, XRD, and N₂ 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 spectro-photometry at 470 nm, and the adsorption data were a good fit with Freundlich isotherm for pu-ri.bent but for FeA-lPILC, were well fit by Elovitch isotherm model. The maximum adsorption ca-pacity (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.

Keywords

Adsorption, Urban Wastewater, Bentonite Clay, Isotherm Models

Conflicts of Interest

The authors declare no conflicts of interest.

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