Removal of Arsenic and Selenium with Nanoscale Zero-Valent Iron (nZVI)

2017 ◽  
Vol 75 (6) ◽  
pp. 594 ◽  
Author(s):  
Xuefen Xia ◽  
Yilong Hua ◽  
Xiaoyue Huang ◽  
Lan Ling ◽  
Weixian Zhang
Keyword(s):  
Zero Valent Iron ◽  
Nanoscale Zero Valent Iron ◽  
Removal Of Arsenic

scholarly journals Highly efficient and rapid removal of arsenic(iii) from aqueous solutions by nanoscale zero-valent iron supported on a zirconium 1,4-dicarboxybenzene metal–organic framework (UiO-66 MOF)

RSC Advances ◽  
2019 ◽  
Vol 9 (67) ◽  
pp. 39475-39487 ◽  
Author(s):  
Tingyi Liu ◽  
Zhengchao Zhang ◽  
Zhaohui Wang ◽  
Zhong-Liang Wang ◽  
Richard Bush
Keyword(s):  
Aqueous Solutions ◽  
Metal Organic Framework ◽  
Zero Valent Iron ◽  
Highly Efficient ◽  
Nanoscale Zero Valent Iron ◽  
Metal Organic ◽  
Rapid Removal ◽  
Removal Of Arsenic ◽  
Organic Framework

A zirconium 1,4-dicarboxybenzene metal–organic framework (UiO-66 MOF) was successfully used as a template to enhance the distribution and activity of nanoscale zero-valent iron (NZVI).

Montmorillonite-supported nanoscale zero-valent iron for removal of arsenic from aqueous solution: Kinetics and mechanism

2014 ◽  
Vol 243 ◽  
pp. 14-23 ◽  
Author(s):  
Subhamoy Bhowmick ◽  
Sudipta Chakraborty ◽  
Priyanka Mondal ◽  
Wouter Van Renterghem ◽  
Sven Van den Berghe ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Kinetics And Mechanism ◽  
Zero Valent Iron ◽  
Nanoscale Zero Valent Iron ◽  
Removal Of Arsenic ◽  
Solution Kinetics

Electrospun membrane composed of poly[acrylonitrile-co-(methyl acrylate)-co-(itaconic acid)] terpolymer and ZVI nanoparticles and its application for the removal of arsenic from water

RSC Advances ◽  
2016 ◽  
Vol 6 (111) ◽  
pp. 110288-110300 ◽  
Author(s):  
Vinod Vellora Thekkae Padil ◽  
Jan Filip ◽  
Kattimuttathu Ittara Suresh ◽  
Stanisław Wacławek ◽  
Miroslav Černík
Keyword(s):  
Itaconic Acid ◽  
Methyl Acrylate ◽  
Zero Valent Iron ◽  
Electrospun Membrane ◽  
Nanoscale Zero Valent Iron ◽  
Removal Of Arsenic ◽  
Poly Acrylonitrile

We present a facile approach to immobilizing nanoscale zero valent iron (nZVI) particles onto an electrospun membrane based on poly[acrylonitrile-co-(methyl acrylate)-co-(itaconic acid)] (hereinafter referred to as AN/MA/IA).

Removal of Arsenic(III) from Groundwater by Nanoscale Zero-Valent Iron

2005 ◽  
Vol 39 (5) ◽  
pp. 1291-1298 ◽  
Author(s):  
Sushil Raj Kanel ◽  
Bruce Manning ◽  
Laurent Charlet ◽  
Heechul Choi
Keyword(s):  
Zero Valent Iron ◽  
Nanoscale Zero Valent Iron ◽  
Removal Of Arsenic

Adsorption and advanced oxidation of diverse pharmaceuticals and personal care products (PPCPs) from water using highly efficient rGO–nZVI nanohybrids

2020 ◽  
Vol 6 (8) ◽  
pp. 2223-2238 ◽  
Author(s):  
Arvid Masud ◽  
Nita G. Chavez Soria ◽  
Diana S. Aga ◽  
Nirupam Aich
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Personal Care Products ◽  
Advanced Oxidation ◽  
Zero Valent Iron ◽  
Redox Activity ◽  
Personal Care ◽  
Adsorption Sites ◽  
Reduced Graphene ◽  
Nanoscale Zero Valent Iron

Reduced graphene oxide-nanoscale zero valent iron (rGO–nZVI) nanohybrid, with tunable adsorption sites of rGO and unique catalytic redox activity of nZVI, perform enhanced removal of diverse PPCPs from water.

scholarly journals Efficient Sequestration of Hexavalent Chromium by Graphene-Based Nanoscale Zero-Valent Iron Composite Coupled with Ultrasonic Pretreatment

2021 ◽  
Vol 18 (11) ◽  
pp. 5921
Author(s):  
Haiyan Song ◽  
Wei Liu ◽  
Fansheng Meng ◽  
Qi Yang ◽  
Niandong Guo
Keyword(s):  
Aqueous Solution ◽  
Removal Efficiency ◽  
Inhibitory Effect ◽  
Ultrasonic Cavitation ◽  
Zero Valent Iron ◽  
Ultrasonic Pretreatment ◽  
Nanoscale Zero Valent Iron ◽  
Passivation Layers ◽  
Initial Ph ◽  
Two Phases

Nanoscale zero-valent iron (nZVI) has attracted considerable attention for its potential to sequestrate and immobilize heavy metals such as Cr(VI) from an aqueous solution. However, nZVI can be easily oxidized and agglomerate, which strongly affects the removal efficiency. In this study, graphene-based nZVI (nZVI/rGO) composites coupled with ultrasonic (US) pretreatment were studied to solve the above problems and conduct the experiments of Cr(VI) removal from an aqueous solution. SEM-EDS, BET, XRD, and XPS were performed to analyze the morphology and structures of the composites. The findings showed that the removal efficiency of Cr(VI) in 30 min was increased from 45.84% on nZVI to 78.01% on nZVI/rGO and the removal process performed coupled with ultrasonic pretreatment could greatly shorten the reaction time to 15 min. Influencing factors such as the initial pH, temperature, initial Cr(VI) concentration, and co-existing anions were studied. The results showed that the initial pH was a principal factor. The presence of HPO42−, NO3−, and Cl− had a strong inhibitory effect on this process, while the presence of SO42− promoted the reactivity of nZVI/rGO. Combined with the above results, the process of Cr(VI) removal in US-nZVI/rGO system consisted of two phases: (1) The initial stage is dominated by solution reaction. Cr(VI) was reduced in the solution by Fe2+ caused by ultrasonic cavitation. (2) In the following processes, adsorption, reduction, and coprecipitation coexisted. The addition of rGO enhanced electron transportability weakened the influence of passivation layers and improved the dispersion of nZVI particles. Ultrasonic cavitation caused pores and corrosion at the passivation layers and fresh Fe0 core was exposed, which improved the reactivity of the composites.

scholarly journals Efficient activation of persulfate by calcium sulfate whisker supported nanoscale zero-valent iron for methyl orange removal

RSC Advances ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 452-461
Author(s):  
Yi Han ◽  
Xian Zhou ◽  
Li Lei ◽  
Huiqun Sun ◽  
Zhiyuan Niu ◽  
...  
Keyword(s):  
Composite Material ◽  
Methyl Orange ◽  
Calcium Sulfate ◽  
Zero Valent Iron ◽  
Nanoscale Zero Valent Iron ◽  
Calcium Sulfate Whiskers ◽  
Calcium Sulfate Whisker

In order to improve the utilization of nanoscale zero-valent iron (nZVI) in activating persulfate (PS), a composite material of nZVI/CSW with nZVI supported on calcium sulfate whiskers (CSWs) was synthesized in this study.

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