Experimental Study on the Treatment of Uranium-Contaminated Mine Wastewater Using Zero-Valent Iron Nanoparticles

2013 ◽  
Vol 316-317 ◽  
pp. 516-519
Author(s):  
Tu Gui Yuan ◽  
Di Yun Chen
Keyword(s):  
Experimental Study ◽  
Reaction Time ◽  
Iron Nanoparticles ◽  
Ph Value ◽  
Zero Valent Iron ◽  
Uranium Removal ◽  
Mine Wastewater ◽  
Zero Valent Iron Nanoparticles

Zero-valent iron nanoparticles( nano-Fe0) were applied as a treatment tactics for a uranium-containing mine wastewater taken from Shaoguan, Guangdong, China. Different factors including pH value, nano-Fe0 dosage,reaction time were introduced to study the effect posed by those factors.Results indicated that those factors have significant effect on uranium removal rate.The best removal effect happened when pH=5~6, nano-Fe0 iron dosage is 2g/l,reaction time is 1h.It is also demonstrated that nano-Fe0may be an effective material for treatment of complex uranium-contaminated effluent.

Removal of Ni(II) and Cu(II) from aqueous solutions using ‘green’ zero-valent iron nanoparticles produced by oak and mulberry leaf extracts

2016 ◽  
Vol 74 (9) ◽  
pp. 2115-2123 ◽  
Author(s):  
S. S. Poguberović ◽  
D. M. Krčmar ◽  
B. D. Dalmacija ◽  
S. P. Maletić ◽  
D. D. Tomašević-Pilipović ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Adsorption Capacity ◽  
Iron Nanoparticles ◽  
Ph Value ◽  
Low Cost ◽  
Ph Effect ◽  
Zero Valent Iron ◽  
Leaf Extracts ◽  
Mulberry Leaf ◽  
Zero Valent Iron Nanoparticles

The production of zero-valent iron nanoparticles, using extracts from natural products, represents a green and environmentally friendly method. Synthesis of ‘green’ zero-valent nanoparticles (nZVI) using oak and mulberry leaf extracts (OL-nZVI and ML-nZVI) proved to be a promising approach for Ni(II) and Cu(II) removal from aqueous solutions. Characterization of the produced green nZVI materials had been conducted previously and confirmed the formation of nanosize zero-valent iron particles within the size range of 10–30 nm, spherical with minimum agglomeration observed by transmission electron microscopy and scanning electron microscope morphology measurements. Batch experiments revealed that the adsorption kinetics followed a pseudo-second-order rate equation. The obtained adsorption isotherm data could be well described by the Freundlich model and OL-nZVI showed higher adsorption capacity for Ni(II) removal than ML-nZVI, while ML-nZVI adsorption capacity was higher for Cu(II). In addition, investigation of the pH effect showed that varying the initial pH value had a great effect on Ni(II) and Cu(II) removal. Adsorbed amounts of Ni(II) and Cu(II) increased with pH increase to pH 7.0 and 8.0. This study indicated that nZVI produced by a low-cost and non-toxic method with oak and mulberry leaf extracts could be used as a new material for remediation of water matrices contaminated with Ni(II) and Cu(II).

scholarly journals Zero-Valent Iron Nanoparticles for Soil and Groundwater Remediation

2020 ◽  
Vol 17 (16) ◽  
pp. 5817
Author(s):  
Alazne Galdames ◽  
Leire Ruiz-Rubio ◽  
Maider Orueta ◽  
Miguel Sánchez-Arzalluz ◽  
José Luis Vilas-Vilela
Keyword(s):  
Contaminated Soils ◽  
Groundwater Remediation ◽  
Iron Nanoparticles ◽  
Environmental Issues ◽  
High Specific Surface Area ◽  
Zero Valent Iron ◽  
Pilot Studies ◽  
High Effectiveness ◽  
Nanosized Materials ◽  
Zero Valent Iron Nanoparticles

Zero-valent iron has been reported as a successful remediation agent for environmental issues, being extensively used in soil and groundwater remediation. The use of zero-valent nanoparticles have been arisen as a highly effective method due to the high specific surface area of zero-valent nanoparticles. Then, the development of nanosized materials in general, and the improvement of the properties of the nano-iron in particular, has facilitated their application in remediation technologies. As the result, highly efficient and versatile nanomaterials have been obtained. Among the possible nanoparticle systems, the reactivity and availability of zero-valent iron nanoparticles (NZVI) have achieved very interesting and promising results make them particularly attractive for the remediation of subsurface contaminants. In fact, a large number of laboratory and pilot studies have reported the high effectiveness of these NZVI-based technologies for the remediation of groundwater and contaminated soils. Although the results are often based on a limited contaminant target, there is a large gap between the amount of contaminants tested with NZVI at the laboratory level and those remediated at the pilot and field level. In this review, the main zero-valent iron nanoparticles and their remediation capacity are summarized, in addition to the pilot and land scale studies reported until date for each kind of nanomaterials.

Anodic coulometry of zero-valent iron nanoparticles

2021 ◽  
Vol 896 ◽  
pp. 115331
Author(s):  
Annelis O. Sánchez-Álvarez ◽  
Jeffrey E. Dick ◽  
Eduardo Larios ◽  
Carlos R. Cabrera
Keyword(s):  
Iron Nanoparticles ◽  
Zero Valent Iron ◽  
Zero Valent Iron Nanoparticles

Diffusion and Treatability Studies with Biopolymer Encapsulated Zero-Valent Iron Nanoparticles

2011 ◽  
Author(s):  
Rabiya Shabnam ◽  
Achintya Bezbaruah ◽  
Senay Simsek ◽  
Eakalak Khan ◽  
John McEvoy ◽  
...  
Keyword(s):  
Iron Nanoparticles ◽  
Zero Valent Iron ◽  
Zero Valent Iron Nanoparticles
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