Synthesis and surface modifications of mesoporous silica adsorbent for selective removal of chromium (Cr3+) ions from wastewater
- Authors
- Santhamoorthy, Madhappan; Mani, Kailasam Saravana; Periyasami, Govindasami; Kim, Seong-Cheol; Mohan, Anandhu; Phan, Thi Tuong Vy
- Issue Date
- Mar-2024
- Publisher
- TAYLOR & FRANCIS INC
- Keywords
- Mesoporous silica adsorbent; surface modification; Cr3+ ion adsorption; Schiff base ligand; wastewater treatment
- Citation
- SEPARATION SCIENCE AND TECHNOLOGY, v.59, no.4, pp 547 - 560
- Pages
- 14
- Journal Title
- SEPARATION SCIENCE AND TECHNOLOGY
- Volume
- 59
- Number
- 4
- Start Page
- 547
- End Page
- 560
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/91113
- DOI
- 10.1080/01496395.2024.2335345
- ISSN
- 0149-6395
1520-5754
- Abstract
- A salicylaldehyde-based Schiff base ligand functionalized mesoporous silica nanoparticles (SBA-15@SB NPs) were prepared for selective adsorption of chromium (Cr3+) ions from aqueous solution. The prepared SBA-15@SB NPs were characterized using X-ray diffraction (XRD), N(2 )sorption, SEM, TEM, zeta potential, particle size analysis, and thermogravimetric analysis. The selective metal ion adsorption capacity of SBA-15@SB NPs was determined using various competitive divalent metal ions (Ni2+, Zn2+, Mn2+, and Mg2+), and trivalent metal ions (Al3+, Fe2+, and In3+), respectively, at different experimental conditions such as varied solution pH (pH 3, 5, 6.5, 7.0, and 9.0), concentration of metal ions (50, 100 and 150 mg/L), adsorbent amount (0.025, 0.05, 0.075, 0.1 and 0.15 g), respectively. At pH 6.5, the synthesized SBA-15@SB NPs showed a high adsorption ability and selectivity toward Cr3+ ions, adsorbing over 90% of the initial Cr3+ ion solution (100 mg/L) in about 210 mg/g.
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