Intensified Pb(II) adsorption using functionalized KCC‑1 synthesized from rice husk ash in batch and column adsorption studies

Rosalyza, Hasan and Mohd Zaki, Ruhiyuddin and Herma Dina, Setiabudi and Rahimah, Jusoh and Aishah, Abdul Jalil and Shokouhimehr, Mohammadreza (2023) Intensified Pb(II) adsorption using functionalized KCC‑1 synthesized from rice husk ash in batch and column adsorption studies. Applied Nanoscience (Switzerland), 13 (6). pp. 4021-4032. ISSN 2190-5509. (Published)

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DOI/Official URL: https://doi.org/10.1007/s13204-022-02689-y

Abstract

An attempt to investigate the feasibility of 3-aminopropyltriethoxysilane (3-APTES)-functionalized KCC-1 (NH2/KCC-1) prepared from rice husk ash (RHA) for Pb(II) removal was executed. An effective functionalization of fibrous silica nanospheres (KCC-1) by NH3 was confirmed by FTIR analysis. The optimized condition of Pb(II) adsorption in the batch system was at an initial Pb(II) concentration (X1) of 307 mg/L, adsorbent dosage (X2) of 2.43 g/L, and time (X3) of 114 min, with the Pb(II) removal (Y) of 90.1% (predicted) and 91.2% (actual). NH2/KCC-1 can be regenerated by nitric acid (0.1 M) with insignificant decline of Pb(II) removal percentage (adsorption = 91.2–67.3%, desorption = 77.7–51.9%) during 5 cycles adsorption–desorption study. The examination of column adsorption study at a varying flow rate (1–3 mL/min) and bed height (10–20 cm) showed a good performance at a lower flow rate and higher bed height. Both Adam–Bohalt model and Thomas model displayed a good correlation with experimental data. However, Thomas model was more suitable due to the high correlation coefficient, R2 = 0.91–0.99. This study revealed the intensified Pb(II) adsorption using NH2/KCC-1 synthesized from RHA in batch and column adsorption studies.

Item Type:	Article
Additional Information:	Indexed by Scopus
Uncontrolled Keywords:	Fibrous silica nanospheres; KCC-1; Optimization; Pb(II) adsorption; Rice husk ash
Subjects:	Q Science > Q Science (General) Q Science > QA Mathematics T Technology > T Technology (General) T Technology > TA Engineering (General). Civil engineering (General) T Technology > TP Chemical technology
Faculty/Division:	Institute of Postgraduate Studies Center for Mathematical Science Faculty of Chemical and Process Engineering Technology
Depositing User:	Mr Muhamad Firdaus Janih@Jaini
Date Deposited:	28 May 2024 07:57
Last Modified:	28 May 2024 07:57
URI:	http://umpir.ump.edu.my/id/eprint/40758
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