Sono-assisted adsorption of organic compounds contained in industrial solution on iron nanoparticles supported on clay: Optimization using central composite design

Wiem Hamza; Nadim Fakhfakh; Nesrine Dammak; Haitham Belhadjltaeif; Mourad Benzina

doi:10.1016/j.ultsonch.2020.105134

Sono-assisted adsorption of organic compounds contained in industrial solution on iron nanoparticles supported on clay: Optimization using central composite design

Ultrason Sonochem. 2020 Oct:67:105134. doi: 10.1016/j.ultsonch.2020.105134. Epub 2020 Apr 20.

Authors

Wiem Hamza¹, Nadim Fakhfakh², Nesrine Dammak², Haitham Belhadjltaeif², Mourad Benzina²

Affiliations

¹ University of Sfax, BP W, 3036 Sfax, Tunisia; Laboratory of Water-Energy-Environment (LR3E), Code: AD-10-02, National School of Engineers of Sfax, Tunisia. Electronic address: hamzawiem@gmail.com.
² University of Sfax, BP W, 3036 Sfax, Tunisia; Laboratory of Water-Energy-Environment (LR3E), Code: AD-10-02, National School of Engineers of Sfax, Tunisia.

PMID: 32339871
DOI: 10.1016/j.ultsonch.2020.105134

Abstract

Organic substance (O.S) in industrial phosphoric acid (IPA) solution is often tacked placed creates a major problem for IPA quality. This study was performed to assess the efficiency of Iron Intercalated Bentonite Nanoparticles (IIBN) coupled with the ultrasonic irradiation named sono-adsorption process for treating IPA 54% P₂O₅ contained O.S. XRD, SEM and BET were performed for the characterization of as-prepared adsorbent. Several conditions such as adsorbent dosage, molar ratio (OH/Fe) and time were investigated in retention experiments at acidic pH and T° of 40 ± 1 °C. The sono-assisted retention parameters were optimized by using NEMROOD software. The interaction impact of study condition on the final retention capability of the organism has been revealed by ANOVA software. Accordingly, the organic substance removal can be retained more than 83% by a sonication time of 0.5 h, absorbent dosage of 1.2 g/L and a molar ratio (OH/Fe) of 1.37. The absorbability of O.S was also evaluated by using the three parameters retention isotherms and kinetic analysis.

Keywords: Adsorption; Industrial phosphoric acid; Nanoparticles; Optimization; Organic substance; Ultrasound.