A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Sorption and mechanism studies of Cu2+, Sr2+ and Pb2+ ions on mesoporous aluminosilicates/zeolite composite sorbents (2020)


Kouznetsova, Tatyana; Ivanets, Andrei; Prozorovich, Vladimir; Hosseini-Bandegharaei, Ahmad; Tran, Hai Nguyen; Srivastava, Varsha; Sillanpää, Mika (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. DOI: 10.2166/wst.2020.407


JYU-tekijät tai -toimittajat


Julkaisun tiedot

Julkaisun kaikki tekijät tai toimittajat: Kouznetsova, Tatyana; Ivanets, Andrei; Prozorovich, Vladimir; Hosseini-Bandegharaei, Ahmad; Tran, Hai Nguyen; Srivastava, Varsha; Sillanpää, Mika

Lehti tai sarja: Water Science and Technology

ISSN: 0273-1223

eISSN: 1996-9732

Julkaisuvuosi: 2020

Volyymi: 82

Lehden numero: 5

Artikkelin sivunumerot: 984-997

Kustantaja: IWA Publishing

Julkaisumaa: Britannia

Julkaisun kieli: englanti

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

Avoin saatavuus: Julkaisukanava ei ole avoin


Tiivistelmä

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.


YSO-asiasanat: komposiitit; silikaatit; zeoliitit; adsorptio; raskasmetallit; vedenkäsittely

Vapaat asiasanat: adsorption; heavy metal; mesoporous aluminosilicate; radioactive ion; textural propoerty; zeolite


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OKM-raportointi: Kyllä

Alustava JUFO-taso: 1


Viimeisin päivitys 2020-12-10 klo 14:05