Research highlights: improved understanding of ecological impacts resulting from nanomaterial-based in situ remediation

2016 ◽  
Vol 3 (2) ◽  
pp. 236-239 ◽  
Author(s):  
John M. Pettibone ◽  
Stacey M. Louie
Keyword(s):  
Iron Transport ◽  
Ecological Impacts ◽  
Zero Valent Iron ◽  
Model Organisms ◽  
In Situ Remediation ◽  
Sustainable Remediation ◽  
Nanoscale Zero Valent Iron

Three articles that examine different aspects of nanoscale zero-valent iron transport, reactivity or exposure to model organisms are reported, which advance the development of more sustainable remediation approaches.

scholarly journals In situ remediation of hexavalent chromium contaminated soil by CMC-stabilized nanoscale zero-valent iron composited with biochar

2018 ◽  
Vol 77 (6) ◽  
pp. 1622-1631 ◽  
Author(s):  
Runyuan Zhang ◽  
Nuanqin Zhang ◽  
Zhanqiang Fang
Keyword(s):  
Hexavalent Chromium ◽  
Contaminated Soil ◽  
Extraction Procedure ◽  
Zero Valent Iron ◽  
In Situ Remediation ◽  
Natural Conditions ◽  
Untreated Soil ◽  
Nanoscale Zero Valent Iron ◽  
Mn Oxides

Abstract In this study, the remediation experiments were performed outdoors in natural conditions. Carboxymethyl cellulose (CMC)-stabilized nanoscale zero-valent iron (CMC-nZVI), biochar (BC) and CMC-stabilized nanoscale zero-valent iron composited with biochar (CMC-nZVI/BC) were synthesized and investigated for their effect on the in situ remediation of hexavalent chromium [Cr(VI)] contaminated soil and the concentration of available iron was tested after the remediation, compared with the untreated soil. The results of toxicity characteristic leaching procedure (TCLP) test showed that CMC-nZVI and CMC-nZVI/BC used as remediation materials could obviously improve the remediation rate of Cr contaminated soil and when the ratio of CMC-nZVI to Fe0 was 2.5 g/Kg, the leachability of Cr(VI) and Crtotal can be reduced by 100% and 95.8% simultaneously. Moreover, sequential extraction procedure (SEP) showed that most exchangeable Cr converted to carbonate-bound and Fe-Mn oxides-bound, reducing the availability and leachability of Cr in the soil.

Pilot scale testing composite swellable organosilica nanoscale zero-valent iron-Iron-Osorb®-for in situ remediation of trichloroethylene

2011 ◽  
Vol 22 (1) ◽  
pp. 105-123 ◽  
Author(s):  
Paul L. Edmiston ◽  
Christine Osborne ◽  
Karl P. Reinbold ◽  
Deanna C. Pickett ◽  
Laura A. Underwood
Keyword(s):  
Pilot Scale ◽  
Zero Valent Iron ◽  
In Situ Remediation ◽  
Nanoscale Zero Valent Iron ◽  
Iron Iron

Preliminary Study on Effects of Nanoscale Amendments on Hyperaccumulator Indian Marigold Grown on Co-Contaminated Soils

2014 ◽  
Vol 955-959 ◽  
pp. 243-247 ◽  
Author(s):  
Jun Jie Du ◽  
Qi Xing Zhou
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Contaminated Soils ◽  
Zero Valent Iron ◽  
Reduced Graphene ◽  
Nanoscale Zero Valent Iron ◽  
Pot Trials ◽  
Preliminary Study

In this study, nanoscale zero-valent iron (nZVI) and nZVI/reduced graphene oxide (RGO-nZVI) nanocomposites were prepared, and the effect of nZVI, RGO-nZVI and graphene oxide (GO) on Indian marigold were examined by pot trials with contaminated soils amended with nanomaterials. The observed results show that 0.05% nZVI and 0.05% RGO-nZVI can wilt the Indian marigold, and they exhibit significant in situ mobility in fluvo-aquic soils. In this paper, the feasibility of improving the phytoremediation efficiency of contaminated soils by amending with nanomaterials is also discussed.

Effects of oxidants on in situ treatment of a DNAPL source by nanoscale zero-valent iron: A field study

2016 ◽  
Vol 107 ◽  
pp. 57-65 ◽  
Author(s):  
Jun-Young Ahn ◽  
Cheolyong Kim ◽  
Hong-Seok Kim ◽  
Kyung-Yup Hwang ◽  
Inseong Hwang
Keyword(s):  
Field Study ◽  
Zero Valent Iron ◽  
Nanoscale Zero Valent Iron
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