Residual impact of aged nZVI on heavy metal-polluted soils

Fajardo, Carmen; Gil-Díaz, M.; Costa, Gonzalo; Alonso, J.; Guerrero, A.; Nande, Mar; Lobo, M.C.; Martín, Margarita

doi:10.1016/j.scitotenv.2015.03.067

Cited by 75 publications

(34 citation statements)

References 30 publications

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“…Several studies have reported the applicability of nZVI for the treatment of metal(loid)-contaminated soils (Fajardo et al, 2012(Fajardo et al, , 2015Gil-Díaz et al, 2014a,b;Zhang et al, 2010). The mobility of metal(loid)s in soils is directly determined by their speciation, which is related to bulk soil composition and pH-Eh conditions as well as to the presence of organic matter and secondary Fe, Mn and Al (hydr)oxides (Barna et al, 2007;Cappuyns and Swennen, 2008;Mahimairaja et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Metal(loid)s behaviour in soils amended with nano zero-valent iron as a function of pH and time

Vítková

Rákosová

Michálková

2017

Journal of Environmental Management

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Section: Introductionmentioning

confidence: 99%

Metal(loid)s behaviour in soils amended with nano zero-valent iron as a function of pH and time

Vítková

Rákosová

Michálková

2017

Journal of Environmental Management

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“…Fajardo et al found no negative effects on physicochemical soil properties after aged ZVINs exposure [49]. Research showed that ZVINs are more effective for Pb immobilization than Zn in contaminated soils [29].…”

Section: Effect Of Zvins Aging On Dtpa Extractable Pbmentioning

confidence: 98%

“…The results reported by Fajardo et al [49] indicated that the pollutant and its ZVINs interaction should be considered when designing soil nano-remediation strategies for the immobilization of heavy metals. Wang et al [33] suggested that combining low molecular weight organic acid and ZVINs could be a promising alternative approach for remediation of Pb-contaminated soils.…”

Section: Effect Of Zvins Aging On Dtpa Extractable Pbmentioning

confidence: 99%

Application of stabilized zero valent iron nanoparticles for immobilization of lead in three contrasting spiked soils

et al. 2016

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This study was conducted to synthesize and characterize the ZVINs stabilized with acid ascorbic (AAS-ZVINs) and to assess their ability to immobilize Pb 2? in sandy, acidity and calcareous spiked soils. To determine the availability of Pb 2? , the DTPA-extractable Pb in three spiked soils was studied in an experiment of a completely randomized design with a factorial arrangement of treatments consisting of the AAS-ZVIN dosage, Pb 2? contamination levels and contact times (aging). The distribution of the chemical forms of Pb was also determined using the sequential extraction method. The SEM and XRD analyses indicated that AASZVINs had the mean size of less than 50 nm and the maximum 2h peak at 44.8°, respectively, demonstrating the nano-sizes and zero valence of the iron particles. The results indicated that the DTPA-extractable Pb in three spiked soils decreased significantly with increasing the AAS-ZVIN dose at the contamination levels of 50 and 150 mg kg -1 . The acidic soil displayed the greatest DTPA extractable Pb reduction cmopared with the other two soils. Continuous reduction of the DTPA extractable Pb in all three spiked soils was observed as the contact time (aging) reached 4 weeks. Sequential extraction procedures showed a significant decrease of soluble, exchangeable and carbonate-bound Pb fractions and a pronounced increase of organic matter-bound, Fe/Mn oxides-bound and residual Pb fraction after the soils were treated with AAS-ZVINs. The results obtained in the present study suggest that the use of AAS-ZVIN to remediate soils polluted with Pb could be a promising in situ strategy.

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“…Thus, using of these nanoparticles in cleaning the environment from pollutants is called nanoremediation. Many studies have been published concerning the benefits of nanoremediation or nanotechnology for environmental clean-up including heavy metals removing from soils (Ingle et al 2014;Araújo et al 2105;Jain et al 2015;Fajardo et al 2015;Jain et al 2016;Gillies et al 2016;Gil-Díaz et al 2016a;Martínez-Fernández et al 2017), using plants in clean up (Ghormade et al 2011;Capaldi Arruda et al 2015;Gil-Díaz et al 2016b;Martínez-Fernández et al 2017), remediation of waste water (Hamza et al 2016;Peeters et al 2016;De Luca and Ferrer 2017;Shekarriz et al 2017;Xue et al 2017) degradation of pesticides in soil and water (El-Temsah and Joner 2013;Gomes et al 2014;El-Temsah et al 2016;Kaushik and Djiwanti 2017). Nanoremediation of soils, as a promising strategy in minimizing the entry of pollutants in plant parts, can be performed using nanoparticles such as zero-valent iron nanoparticles (nZVI), ZnO, TiO 2 , carbon nanotubes, fullerenes and bimetallic nano-metals.…”

Section: Environmrntal Nanoremediation Under Climate Changementioning

confidence: 99%

Environmental Nanoremediation under Changing Climate

El-Ramady

Alshaal

El-Henawy

et al. 2017

EBSS

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MANY global problems threaten our life on the Planet including climate changes, environmental pollution, food and soil security, energy crisis, etc. This environmental pollution has not only mainly serious risks and stress involving the human health and safety of the entire ecosystem but also the quantity and quality of crops productivity worldwide. Due to the great gap between the global food production and the global consumption, there is a crucial need to cultivate these contaminated lands sooner or later. Therefore, the removing of pollutants from soils and waters should be performed in frame of sustainable remediation and sustainable energy production accordingly. Depending on many factors (source and kind of pollutants, land use and the economics of water and soil resources, etc) many strategies should be addressed for the sustainable and integrated management of polluted lands. Nanoremediation is a promising strategy in controlling pollution and management. Three major applications of nanoremediation could be characterized including detection of pollution using nanosensors, prevention of pollution, purification and remediation of contamination. Further studies also concerning the impact of changing climate on the nanoremediation process in the agroecosystems should be considered. Thus, this review will focus on the evaluation of environmental nanoremediation and its strategy in polluted lands under climate changes. Using of nanotechnology in pollution control as well as the environmental pollution and its sustainable management also will be highlighted.Keywords: Environmental nanoremediation, Climate change, Pollution, Crop production, Environmental stress. IntroductionClimate changes are a great challenge facing the human kind as well as other living things. The production of crops and other agricultural features are extremely susceptible to changes in climate. So, these global changes will be caused major shifts in crop distribution due to climate changes in the future. Moreover, it has been estimated that climate changes are likely to reduce yields and/or damage crops in the 21 Removing of pollutants from soils and waters could be linked with both the sustainable remediation as well as sustainable energy production (Kovacs and Szemmelveisz 2017; Zheng and Shi 2017). Many strategies for the sustainable and integrated management of polluted lands should be addressed depending on several factors e.g., type of pollutants and their level, the purpose of land use after remediation, soil characterization and its topography, climate , cropping patterns and the availability of resources and their economics (El-Ramady et al. 2017;Saha et al. 2017a). Furthermore, a great debate concerning using of lands for crop food production (under growing global population) or energy crop production was and still for ages (Paschalidou et al. 2016). Therefore, a global and holistic strategy in facing the main three threats including hunger, lack of energy and pollution of environment as well as climate changes should be esta...

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Residual impact of aged nZVI on heavy metal-polluted soils

Cited by 75 publications

References 30 publications

Metal(loid)s behaviour in soils amended with nano zero-valent iron as a function of pH and time

Metal(loid)s behaviour in soils amended with nano zero-valent iron as a function of pH and time

Application of stabilized zero valent iron nanoparticles for immobilization of lead in three contrasting spiked soils

Environmental Nanoremediation under Changing Climate

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