Nano Archive

Encapsulation of iron nanoparticles in alginate biopolymer for trichloroethylene remediation

Bezbaruah, Achintya N. and Shanbhogue, Sai Sharanya and Simsek, Senay and Khan, Eakalak (2011) Encapsulation of iron nanoparticles in alginate biopolymer for trichloroethylene remediation. Journal of Nanoparticle Research, 13 (12). pp. 6673-6681.

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Abstract

Nanoscale zero-valent iron (NZVI) particles (10–90 nm) were encapsulated in biodegradable calcium-alginate capsules for the first time for application in environmental remediation. Encapsulation is expected to offers distinct advances over entrapment. Trichloroethylene (TCE) degradation was 89–91% in 2 h, and the reaction followed pseudo first order kinetics for encapsulated NZVI systems with an observed reaction rate constant ( k obs ) of 1.92–3.23 × 10 −2 min −1 and a surface normalized reaction rate constant ( k sa ) of 1.02–1.72 × 10 −3 L m −2 min −1 . TCE degradation reaction rates for encapsulated and bare NZVI were similar indicating no adverse affects of encapsulation on degradation kinetics. The shelf-life of encapsulated NZVI was found to be four months with little decrease in TCE removal efficiency.

Item Type:Article
ID Code:11460
Deposited By:Prof. Alexey Ivanov
Deposited On:05 Jan 2012 09:29
Last Modified:05 Jan 2012 09:42

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