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Synthesis and characterization of lignosulfonate/aminofunctionalized SBA-15 nanocomposite for the adsorption of methylene blue from wastewater

Abstract

TThe synthesis, characterization, and Methylene Blue (MB) adsorption study of lignosulfonate/amino-functionalized SBA-15 new nanocomposite were described. (3-Aminopropyl)triethoxysilane (APTES) was grafted into SBA-15 to prepare amino-functionalized SBA-15 (N-SBA-15) which was used, along with calcium lignosulfonate (LS) to prepare a new nanocomposite LS/N-SBA-15. The prepared materials were characterized by SEM, TEM, FT-IR, Brunauer-Emmett-Teller, powder XRD, TGA analysis, and Raman spectroscopy. Experimental results indicated that the obtained nanocomposite possesses a high surface area (598 m2/g) and a large pore volume (1.059 cm3/g). This particular combination of LS and N-SBA-15 allowed to this material a good dispersibility and stability in water, and better wettability. The uptake of MB from aqueous solution using the LS/N-SBA-15 nanocomposite was investigated. The adsorption investigation was performed under parameters such as pH, contact time, adsorbent dosage, temperature and initial dye concentration. The results indicated that the addition of LS to N-SBA-15 enhanced the stability of the composite in water, and improved its adsorption capacity of MB, and showed the optimum conditions at 0.05 g dose and pH = 9 during a short contact time less than 10 min. LS/N-SBA-15 exhibited a high adsorption capacity compared to other adsorbents used in the literature for the removal of MB from water. The reusability of this new nanocomposite was also performed and results reported. This new nanocomposite can be efficiently employed for the removal of organic dyes from wastewater.

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Article information


Accepted
08 Jan 2020
First published
09 Jan 2020

New J. Chem., 2020, Accepted Manuscript
Article type
Paper

Synthesis and characterization of lignosulfonate/aminofunctionalized SBA-15 nanocomposite for the adsorption of methylene blue from wastewater

M. Abboud, T. Sahlabji, M. Abu Haija, A. A. El-Zahhar, S. Bondock, I. Ismail and S. keshk, New J. Chem., 2020, Accepted Manuscript , DOI: 10.1039/D0NJ00076K

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