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Title

Mechanism and performance study of multi-wall carbonnanotubes decorated with nano-zero valent iron(nZVI@MWCNTs) for nitrate reduction

Year: 1395
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COI: CHECONF03_104
Language: EnglishView: 387
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Authors

Babak Kakavandi - Environmental Technologies Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
Ali Akbar Babaei - Department of Environmental Health Engineering, School of Health, Ahvaz, Jundishapur University of Medical Sciences, Ahvaz, Iran

Abstract:

In this work, multi-wall carbon nanotubes (MWCNTs) were used as an supporter nano-zero valent iron (nZVI) particles to fabricating a composite known as nZVI@MWCNTs . The composite was then characterized and applied in the nitrate removal process in a batch system under the anoxic conditions. The influential parameters such as pH, various concentrations of nitrate and composite were investigated within 240 min of the reaction. The mechanism, kinetics and end-products of nitrate reduction were also evaluated. Results revealed that theremoval nitrate percentage for nZVI@MWCNTs composite was higher than that of nZVI and MWCNTs alone. Experimental data from nitrate reduction were fitted to the Langmuir-Hinshelwood kinetic model. The values of observed rate constant (kobs) decreased with increasing the initial concentration of nitrate. Our experiments proved that the nitrate removal efficiency was favorable once both high amounts of nZVI@MWCNTs and low concentrations of nitrate were applied. The predominant end-products of the nitrate reduction were ammonium(84%) and nitrogen gas (15%). Our findings also revealed that ZVI@MWCNTs is potentially a good composite for removal/reduction of nitrate from aqueous solutions.

Keywords:

Zero valent iron nanoparticles , Carbon nanotubes , Nitrate , Supported , Magnetic composite

Paper COI Code

This Paper COI Code is CHECONF03_104. Also You can use the following address to link to this article. This link is permanent and is used as an article registration confirmation in the Civilica reference:

https://civilica.com/doc/530730/

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Kakavandi, Babak and Babaei, Ali Akbar,1395,Mechanism and performance study of multi-wall carbonnanotubes decorated with nano-zero valent iron(nZVI@MWCNTs) for nitrate reduction,سومین کنفرانس بین المللی دستاوردهای نوین پژوهشی در شیمی و مهندسی شیمی,Tehran,https://civilica.com/doc/530730

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The specifications of the publisher center of this Paper are as follows:
Type of center: علوم پزشکی
Paper count: 3,424
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