A1 Journal article (refereed)
Sorption and mechanism studies of Cu2+, Sr2+ and Pb2+ ions on mesoporous aluminosilicates/zeolite composite sorbents (2020)

Kouznetsova, T., Ivanets, A., Prozorovich, V., Hosseini-Bandegharaei, A., Tran, H. N., Srivastava, V., & Sillanpää, M. (2020). Sorption and mechanism studies of Cu2+, Sr2+ and Pb2+ ions on mesoporous aluminosilicates/zeolite composite sorbents. Water Science and Technology, 82(5), 984-997. https://doi.org/10.2166/wst.2020.407

JYU authors or editors

Publication details

All authors or editors: Kouznetsova, Tatyana; Ivanets, Andrei; Prozorovich, Vladimir; Hosseini-Bandegharaei, Ahmad; Tran, Hai Nguyen; Srivastava, Varsha; Sillanpää, Mika

Journal or series: Water Science and Technology

ISSN: 0273-1223

eISSN: 1996-9732

Publication year: 2020

Publication date: 26/08/2020

Volume: 82

Issue number: 5

Pages range: 984-997

Publisher: IWA Publishing

Publication country: United Kingdom

Publication language: English

DOI: https://doi.org/10.2166/wst.2020.407

Publication open access: Openly available

Publication channel open access: Open Access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/83184

Abstract

The research aimed to develop a novel mesoporous aluminosilicate/zeolite composite by the template co-precipitation method. The effect of aluminosilicate (AlSi) and zeolite (NaY) on the basic properties and adsorption capacity of the resultant composite was conducted at different mass ratios of AlSi/NaY (i.e., 5/90, 10/80, 15/85, 20/80, and 50/50). The adsorption characteristics of such composite and its feedstock materials (i.e., aluminosilicates and zeolite) towards radioactive Sr2+ ions and toxic metals (Cu2+ and Pb2+ ions) in aqueous solutions was investigated. Results indicated that BET surface area (SBET), total pore volume (VTotal), and mesopore volume (VMeso) of prepared materials followed the decreasing order: aluminosilicate (890 m2/g, 0.680 cm3/g, and 0.644 cm3/g) > zeolite (623 m2/g, 0.352 cm3/g, and 0.111 cm3/g) > AlSi/NaY (20/80) composite (370 m2/g, 0.254 cm3/g, and 0.154 cm3/g, respectively). The Langmuir maximum adsorption capacity (Qm) of metal ions (Sr2+, Cu2+, and Pb2+) in single-component solution was 260 mg/g, 220 mg/g, and 161 mg/g (for zeolite), 153 mg/g, 37.9 mg/g, and 66.5 mg/g (for aluminosilicate), and 186 mg/g, 140 mg/g, and 77.8 mg/g for (AlSi/NaY (20/80) composite), respectively. Ion change was regarded as a domain adsorption mechanism of metal ions in solution by zeolite; meanwhile, inner-surface complexation was domain one for aluminosilicate. Ion change and inner-surface complexation might be mainly responsible for adsorbing metal ions onto the AlSi/NaY composite. Pore-filling mechanism was a less important contributor during the adsorption process. The results of competitive adsorption under binary-components (Cu2+ and Sr2+) and ternary-components (Cu2+, Pb2+, and Sr2) demonstrated that the removal efficacy of target metals by the aluminosilicate, zeolite, and their composite remarkably decreased. The synthesized AlSi/NaY composite might serve as a promising adsorbent for real water treatment.

Keywords: composites; silicates; zeolites; adsorption; heavy metals; water treatment

Free keywords: adsorption; heavy metal; mesoporous aluminosilicate; radioactive ion; textural propoerty; zeolite

Contributing organizations

Ministry reporting: Yes

VIRTA submission year: 2020

JUFO rating: 1