Synthesis and characterization of lignosulfonate/amino-functionalized SBA-15 nanocomposites for the adsorption of methylene blue from wastewater

The synthesis, characterization, and methylene blue (MB) adsorption study of a new lignosulfonate/amino-functionalized SBA-15 nanocomposite are described. (3-Aminopropyl)triethoxysilane (APTES) was grafted into SBA-15 to prepare amino-functionalized SBA-15 (N-SBA-15) which was used, along with calci...

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Bibliographic Details
Published in:New journal of chemistry 2020-02, Vol.44 (6), p.2291-232
Main Authors: Abboud, Mohamed, Sahlabji, Taher, Haija, Mohammad Abu, El-Zahhar, Adel A, Bondock, Samir, Ismail, Issam, Keshk, Sherif M. A. S
Format: Article
Language:English
Subjects:
Adsorbents
Adsorption
Aminopropyltriethoxysilane
Aqueous solutions
Dyes
Investigations
Lignosulfonates
Methylene blue
Nanocomposites
Raman spectroscopy
Stability
Synthesis
Wastewater
Wettability
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Summary:The synthesis, characterization, and methylene blue (MB) adsorption study of a new lignosulfonate/amino-functionalized SBA-15 nanocomposite are 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, BrunauerEmmettTeller, powder XRD, TGA analysis, and Raman spectroscopy. The experimental results indicated that the obtained nanocomposite possesses a high surface area (598 m 2 g 1 ) and a large pore volume (1.059 cm 3 g 1 ). This particular combination of LS and N-SBA-15 endowed this material with 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 investigated and the results reported. This new nanocomposite can be efficiently employed for the removal of organic dyes from wastewater. The synthesis, characterization, and methylene blue (MB) adsorption study of a new lignosulfonate/amino-functionalized SBA-15 nanocomposite are described.
ISSN:1144-0546
1369-9261
DOI:10.1039/d0nj00076k