Synthesis of diatom-FeOx composite for removing trace arsenic to meet drinking water standards

Authors

Megha Thakkar, New Jersey Institute of Technology
Varunpreet Randhawa, New Jersey Institute of Technology
Somenath Mitra, New Jersey Institute of Technology
Liping Wei, New Jersey Institute of Technology

Document Type

Article

Publication Date

11-1-2015

Abstract

This study presents the synthesis of diatom-FeOx composite as a novel sorbent for arsenic removal from water. The unique porous architecture of the diatom was utilized to immobilize iron oxide to form the composite. The surface area was as high as 70m²/g. The adsorption isotherms for As (III) and As (V) followed the Langmuir, Freundlich and D-R models. Langmuir monolayer adsorption capacity for arsenite (As III) was 10,000μg/g and arsenate (As V) was 12,500μg/g. The pseudo-second order rate equation was found to effectively describe the kinetics of arsenic adsorption. This study opens the door for the development of bio derived materials for environmental remediation.

Identifier

84936880716 (Scopus)

Publication Title

Journal of Colloid and Interface Science

External Full Text Location

https://doi.org/10.1016/j.jcis.2015.07.003

e-ISSN

10957103

ISSN

00219797

PubMed ID

26164249

First Page

169

Last Page

173

Volume

457

Grant

2012NJ308B

Recommended Citation

Thakkar, Megha; Randhawa, Varunpreet; Mitra, Somenath; and Wei, Liping, "Synthesis of diatom-FeOx composite for removing trace arsenic to meet drinking water standards" (2015). Faculty Publications. 6680.
https://digitalcommons.njit.edu/fac_pubs/6680