Water defluoridation using a nanostructured diatom-ZrO2 composite synthesized from algal Biomass

Document Type

Article

Publication Date

7-5-2015

Abstract

Frustules or the rigid amorphous silica cell wall of unicellular, photosynthetic microalgae with unique porous architecture has been used to synthesize a composite by immobilizing ZrO2 on its surface and in the pores. This was effective in water defluoridation. The average diameter of the composite was 80±2nm and surface area was 140m2/g. The adsorption isotherms followed both Langmuir and Freundlich models, and the composite was regenerable. Adsorption kinetics followed second order model and the adsorption capacity was as high as 11.32mg/g, while the Langmuir maximum adsorption capacity (qm) reached 15.53mg/g. The research findings highlight the potential of diatoms as hosts for nanomaterials for use in water treatment.

Identifier

84925762419 (Scopus)

Publication Title

Journal of Colloid and Interface Science

External Full Text Location

https://doi.org/10.1016/j.jcis.2015.03.017

e-ISSN

10957103

ISSN

00219797

PubMed ID

25823727

First Page

239

Last Page

245

Volume

450

Grant

2014NJ358B

Fund Ref

New Jersey Water Resources Research Institute

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