Synthesis of eco-friendly nanocomposite polyoxometalates Dawson type and their application for the removal of cadmium from aqueous solution

Zabat, Nacéra

doi:10.1007/s41204-022-00215-7

Nanotechnol. Environ. Eng.

2022

DOI: 10.1007/s41204-022-00215-7

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Synthesis of eco-friendly nanocomposite polyoxometalates Dawson type and their application for the removal of cadmium from aqueous solution

Nacéra Zabat

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Green complexation for heavy metals removal from wastewater by Keggin-polyoxometalates enhanced ultrafiltration

Kahloul

Mahfoudhi

Ounifi

et al. 2022

Water Science and Technology

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The presence of heavy metals in wastewater has become a serious issue and a global concern for the environment and public health with rapid progress of modern textile industry. To minimize the health risks of heavy metals their complexation to a chelating agent constitute a promising process using membrane separation. We highlight for the first time the use of Keggin type-polyoxometalates (PW12) as complexing agent to eliminate heavy metals from synthetic textile wastewater. Indeed, Filtration experiments were performed through the ultrafiltration organic regenerated cellulose membrane (3KDa). Effects of pressure (1–2.5 bar), PW12 concentration (10–50 mg·L−1), salt concentration (10−4–2 M) and pH value (2–12) on cadmium (Cd) and copper (Cu) removal were regularly explored. Experimental data showed that the addition of PW12 improves metal removal efficiency (up to 90%). The addition of NaCl salt decrease significantly the metals retention until 42%. The retention drop probably due to the competition between Na+ and metals on complexation same negative sites of the PW12 and to the electric double-layer compressing. 24 full factorial design has been used to evaluate the most influencing parameters. Results obtained revealed that the maximum metal retention was 99% for both Cd and Cu.

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Green complexation for heavy metals removal from wastewater by Keggin-polyoxometalates enhanced ultrafiltration

Kahloul

Mahfoudhi

Ounifi

et al. 2022

Water Science and Technology

View full text Add to dashboard Cite

show abstract

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Synthesis of eco-friendly nanocomposite polyoxometalates Dawson type and their application for the removal of cadmium from aqueous solution

Cited by 1 publication

References 67 publications

Green complexation for heavy metals removal from wastewater by Keggin-polyoxometalates enhanced ultrafiltration

Green complexation for heavy metals removal from wastewater by Keggin-polyoxometalates enhanced ultrafiltration

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