Next Article in Journal
Interaction of Gold Nanorods with Human Dermal Fibroblasts: Cytotoxicity, Cellular Uptake, and Wound Healing
Previous Article in Journal
Morphology, Photocatalytic and Antimicrobial Properties of TiO2 Modified with Mono- and Bimetallic Copper, Platinum and Silver Nanoparticles
Previous Article in Special Issue
Nanomaterials for the Removal of Heavy Metals from Wastewater
Open AccessFeature PaperArticle

Synthesis of Fe/Ni Bimetallic Nanoparticles and Application to the Catalytic Removal of Nitrates from Water

1
Department of Ecological Chemistry, Faculty of Ecology and Soil Science, Baku State University, Baku AZ1000, Azerbaijan
2
Department of Chemical Engineering Materials & Environment, Sapienza University of Rome, Via Eudossiana, 00184 Rome, Italy
3
Department of Chemical Physics of Nanomaterials, Faculty of Physics, Baku State University, Baku AZ1000, Azerbaijan
*
Author to whom correspondence should be addressed.
Nanomaterials 2019, 9(8), 1130; https://doi.org/10.3390/nano9081130
Received: 13 July 2019 / Revised: 25 July 2019 / Accepted: 30 July 2019 / Published: 6 August 2019
(This article belongs to the Special Issue Nanotechnology for Clean Energy and Environmental Applications)
  |  
PDF [4437 KB, uploaded 12 August 2019]
  |  

Abstract

This work investigated the effectiveness of zerovalent iron and Fe/Ni bimetallic nanoparticles in the treatment of water polluted by a high concentration of nitrates. Nanoparticle synthesis was carried out by a sodium borohydride reduction method in the presence of sodium oleate as a surfactant. The particles were characterized by XRD and SEM. Batch experiments were conducted on water samples contaminated by 300 mg L−1 of nitrate. The parameters investigated were the Fe/Ni dosage (0.05, 0.1, 0.2, 0.3, and 0.4 g L−1) and the reaction pH (unbuffered; buffered at pH = 3; initial pH = 3, 5, and 10). The results showed that almost complete nitrate removal (>99.8%) was always achieved after 15 min at a concentration of bimetallic nanoparticles higher than 0.2 g L−1. The optimization of bimetallic nanoparticle dosage was carried out at a fixed pH. Kinetic study tests were then performed at different temperatures to assess the effect of temperature on the nitrate removal rate. By fixing the pH at acidic values and with an operating temperature of 303 K, nitrates were completely removed after 1 min of treatment. View Full-Text
Keywords: nitrate; wastewater treatment; bimetallic nanoparticles; kinetics nitrate; wastewater treatment; bimetallic nanoparticles; kinetics
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Valiyeva, G.G.; Bavasso, I.; Di Palma, L.; Hajiyeva, S.R.; Ramazanov, M.A.; Hajiyeva, F.V. Synthesis of Fe/Ni Bimetallic Nanoparticles and Application to the Catalytic Removal of Nitrates from Water. Nanomaterials 2019, 9, 1130.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Nanomaterials EISSN 2079-4991 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top