Treatment of chlorinated organic contaminants with nanoscale bimetallic particles

Zhang, Wei‐xian; Wang, Chuan-Bao; Lien, Hsing-Lung

doi:10.1016/s0920-5861(98)00067-4

Cited by 537 publications

(343 citation statements)

References 17 publications

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“…Plus, the surface-areanormalized reactivity constants were ϳ100 times higher than that of commercial microscale Fe powder. 12 A field demonstration was performed extremely efficiently by the nanoscale bimetallic particles for groundwater contaminated with TCE and other chlorinated aliphatic hydrocarbons. 13 Zhang 14 reviewed and predicted that the nanoscale iron particles provide a new generation of environmental in situ remediation both in laboratory and pilot scales to offer the more efficient, cost-effective, and time-saving methods for the pollutants, such as chlorinated organic solvents, organochlorine pesticides and PCBs.…”

Section: Discussionmentioning

confidence: 99%

Remediation of Soil Contaminated with Pyrene Using Ground Nanoscale Zero-Valent Iron

Chang

Shu

Hsieh³

et al. 2007

Journal of the Air & Waste Management Association

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The sites contaminated with recalcitrant polycyclic aromatic hydrocarbons (PAHs) are serious environmental problems ubiquitously. Some PAHs have proven to be carcinogenic and hazardous. Therefore, the innovative PAH in situ remediation technologies have to be developed instantaneously. Recently, the nanoscale zero-valent iron (ZVI) particles have been successfully applied for dechlorination of organic pollutants in water, yet little research has investigated for the soil remediation so far. The objective in this work was to take advantage of nanoscale ZVI particles to remove PAHs in soil. The experimental factors such as reaction time, particle diameter and iron dosage and surface area were considered and optimized. From the results, both microscale and nanoscale ZVI were capable to remove the target compound. The higher removal efficiencies of nanoscale ZVI particles were obtained because the specific surface areas were about several dozens larger than that of commercially microscale ZVI particles. The optimal parameters were observed as 0.2 g iron/2 mL water in 60 min and 150 rpm by nanoscale ZVI. Additionally, the results proved that nanoscale ZVI particles are a promising technology for soil remediation and are encouraged in the near future environmental applications. Additionally, the empirical equation developed for pyrene removal efficiency provided the good explanation of reaction behavior. Ultimately, the calculated values by this equation were in a good agreement with the experimental data.

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Section: Discussionmentioning

confidence: 99%

Remediation of Soil Contaminated with Pyrene Using Ground Nanoscale Zero-Valent Iron

Chang

Shu

Hsieh³

et al. 2007

Journal of the Air & Waste Management Association

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“…In the past few years, different methods were developed to synthesize iron nanoparticles (Brumfiel 2003;Hassan 2005;Zhang et al 2015;Su et al 2016), modify their surface properties (Mahfuz and Ahmed 2005;Karlsson et al 2004;Rajajayavel and Ghoshal 2015), and improve their efficiency for field delivery and reactions (Liu et al 2015;Glavee et al 1995;Khalil et al 2004;Xu et al 2005;Zhang et al 1998;Schrick et al 2002;Elliott and Zhang 2001). Extensive investigations reported that nanoscale iron particles are effective for the removal of a wide environmental contaminants such as heavy metal ions like As(III), Pb(II), Cu(II), Ni(II), and Cr(VI), chlorinated organic solvents, organochlorine pesticides, some inorganic compounds (Elliott and Zhang 2001;Liu et al 2005;Alowitz and Scherer 2002;Cao et al 2005;Kanel et al 2005), and organic dyes (Alowitz and Scherer 2002;Cao et al 2005;Kanel et al 2005).…”

Section: Introductionmentioning

confidence: 99%

Effective Pb2+ removal from water using nanozerovalent iron stored 10 months

et al. 2017

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Heavy metal removal from water required reliable and cost-effective considerations, fast separation as well as easy methodology. In this piece of research, nanozerovalent iron (NZVI) was prepared as ideal sorbent for Pb 2? removal. The sample was characterized using X-ray diffraction (XRD), high-resolution transmission electron microscope (HRTEM), and atomic force microscope (AFM-SPM). Batch experiments comprised the effect of pH value and contact time on the adsorption process. The same NZVI was stored for a shelf time (10 months) and the batch experiment was repeated. The outcomes of the investigation assured that NZVI publicized an extraordinary large metal uptake (98%) after a short contact time (10 h). The stored sample revealed the same effectiveness on Pb 2? removal under the same conditions. The results of the physical properties, magnetic susceptibility, and conductance were correlated with the adsorption efficiency. This work offers evidence that these NZVI particles could be potential candidate for Pb 2? removal in large scale, stored for a long time using a simple, green, and cost-effective methodology, and represent an actual feedback in waste water treatment.

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“…With the development of advanced nanotechnologies since late nineties, due to their size and reactivity that allowed an easy injection,zero valent iron nanoparticles (nZVI) were considered a promising step forward in soil and groundwater clean-up, particularly targeting organochlorines [4][5][6][7][8]. The nZVI transport in porous media was studied in column tests with sand [9][10][11][12][13][14][15][16], glass beads [17][18][19] and model soils [20,21].…”

Section: Introductionmentioning

confidence: 99%

Numerical prediction of diffusion and electric field-induced iron nanoparticle transport

Gomes

Rodríguez‐Maroto

Ribeiro

et al. 2015

Electrochimica Acta

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Numerical prediction of diffusion and electric field-induced iron nanoparticle transport, Electrochimica Acta http://dx.doi.org/10.1016/j.electacta. 2014.11.157 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

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Treatment of chlorinated organic contaminants with nanoscale bimetallic particles

Cited by 537 publications

References 17 publications

Remediation of Soil Contaminated with Pyrene Using Ground Nanoscale Zero-Valent Iron

Remediation of Soil Contaminated with Pyrene Using Ground Nanoscale Zero-Valent Iron

Effective Pb2+ removal from water using nanozerovalent iron stored 10 months

Numerical prediction of diffusion and electric field-induced iron nanoparticle transport

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