Highly efficient and selective adsorbent for potentially toxic metals removal from aquatic media. Issue 5 (October 2018)

• Record Type: Journal Article
• Authors: El-Massaoudi, Mohamed; Radi, Smaail; Bacquet, Maryse; Degoutin, Stéphanie; Garcia, Yann
• Is Part Of: Journal of environmental chemical engineering. Volume 6:Issue 5(2018)
• Page Start: 5980
• Page End: 5989
• Publication Date: 2018-10
• Subjects: Hybrid material -- Silica -- Zinc -- Water pollution -- Adsorption -- Trace elements -- Adsorption-desorption cycles; Chemical engineering -- Environmental aspects -- Periodicals; Environmental engineering -- Periodicals; Chemical engineering -- Environmental aspects; Environmental engineering; Periodicals; 660.0286
• DOI: 10.1016/j.jece.2018.09.010
• Languages: English
• ISSNs: 2213-2929

Abstract

Highlights: Efficient hybrid adsorbent material for the elimination of trace elements from water. Very stable material with a high adsorption capacity. Top performing remediation adsorbent for the adsorption of Zn from real water solutions. Abstract: Efficient hybrid materials based adsorbents are highly recommended for potentially toxic metals removal from polluted water media. Herein, novel silica particles modified with a new bispyrazolylpropane Schiff base were synthesized and characterized using relevant physical techniques. The resulting hybrid material (SiNAL3 ) was studied for its ability to uptake Zn II, Cu II, Pb II and Cd II ions in aqueous solution via kinetics studies. The maximum adsorption capacities ofSiNAL3 for Zn II, Cu II, Pb II and Cd II were approximately 1.23, 0.32, 0.29 and 0.23 mmol g −1, respectively, with an equilibrium reached after only 25 min for all metals. The adsorption process was found spontaneous and endothermic. Interestingly, our hybrid material could selectively adsorb Zn II in the presence of other metal ions from an aqueous solution, a useful property which was applied to real water samples. The adsorbent can be easily reused with no significant decrease in adsorption capacity after not less than five adsorption-desorption cycles, demonstrating its high stability.