Characterization and mobility of geogenic chromium in soils and river bed sediments of Asopos basin

Lilli, Maria Α.; Moraetis, Daniel; Nikolaidis, Nikolaos P.; Karatzas, George P.; Kalogerakis, Nicolas

doi:10.1016/j.jhazmat.2014.07.037

Cited by 54 publications

(19 citation statements)

References 19 publications

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“…As a result, considerable conflict emerged between the local community and the firms. Due to the concerns about water contamination, several studies have been published regarding the levels of environmental quality in the Asopos river area (Botsou et al, 2011;Lili et al, 2015). A recent interesting study also estimated the willingness to pay of local households in order to recover levels of environmental quality in the river (Tentes and Damigos, 2016).…”

Section: Research Areamentioning

confidence: 99%

Community perceptions of local enterprises in environmentally degraded areas

Proikaki

Nikolaou

Jones

et al. 2018

Journal of Behavioral and Experimental Economics

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Local enterprises can play a key role in the economic development of communities in which they are situated but simultaneously, they are often a contributor to negative impacts on the natural environment. Several studies have highlighted the importance of Corporate Social Responsibility (CSR) activities in order to strike a balance between socioeconomic and environmental impacts in such communities. However, there is very limited literature exploring community perceptions of local businesses. We consider this to be a key topic as such information can be used in order to develop socioeconomic and environmental policies based on the principles of sustainable development. In this paper, the results of an empirical study examining local community perceptions of business activities are presented and also perceptions regarding the contribution of firms, through CSR actions, to environmental quality restoration. The empirical study was conducted in communities located in the environmentally degraded area of the Asopos river in Greece.

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Section: Research Areamentioning

confidence: 99%

Community perceptions of local enterprises in environmentally degraded areas

Proikaki

Nikolaou

Jones

et al. 2018

Journal of Behavioral and Experimental Economics

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“…Cr(III) is the chemically most stable form of chromium, whereas Cr(VI) is highly toxic and more easily mobilized. Mobilization of Cr(VI), and then risks of water pollution and even of transfer to the food chain, are strongly related to retention processes affecting the pollutant (Lilli et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Cr(VI) sorption/desorption on untreated and mussel-shell-treated soil materials: fractionation and effects of pH and chromium concentration

et al. 2015

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Abstract. We used batch-type experiments to study Cr(VI) sorption/desorption on granitic material, forest soil, pyritic material, mussel shell, and on forest soil and granitic material amended with 12 t ha −1 (1.2 kg m −2 ) shell, considering the effects of varying Cr(VI) concentration and pH. Sequential extractions were carried out to fractionate adsorbed Cr(VI) and to determine the stability of Cr(VI) retention. The pyritic material had the highest Cr(VI) retention capacity, whereas the granitic material showed the lowest retention potential. When high Cr concentrations were added, some saturation of the adsorbent surfaces became apparent, but Cr release remained low. The highest Cr retention was achieved at a very acid pH value, with release progressively increasing as a function of increasing pH. The amendment with 12 t ha −1 mussel shell did not cause marked changes in Cr(VI) retention. Sorption data were satisfactory adjusted to the Freundlich model. Regarding Cr(VI) fractionation, the soluble fraction (weakly bound) was dominant in mussel shell and in the unamended and amended granitic material, whereas more stable fractions dominated in the pyritic material (residual fraction) and in the forest soil (oxidizable fraction). In conclusion, the pyritic material presented the highest Cr(VI) retention capacity, while the retention was low and weak on the granitic material; mussel shell was not characterized by a marked Cr(VI) retention potential, and it did not cause remarkable increase in Cr(VI) retention when used to amend the granitic material or the forest soil.

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“…Consequently, the Montanuniversitaet Leoben invented an innovative technique for the decontamination of heavy metalcontaminated waters, and it was tested during the course of several research projects. This new technique utilizes zerovalent iron (Fe(0)) in a fluidized bed reactor for groundwater remediation in combination with an in-situ soil remediation technique (Müller et al 2014), where the carcinogenic, toxic, highly mobile hexavalent form of chromium (Cr(VI)) is reduced to the non-toxic, immobile trivalent form (Cr(III)) (Lilli et al 2015;Rajapaksha et al 2018;Li et al 2019). A detailed description of the development of this remediation method is provided by Müller et al (2014).…”

Section: Introductionmentioning

confidence: 99%

Impact of an in-situ Cr(VI)-contaminated site remediation on the groundwater

Sedlazeck

Vollprecht

Müller³

et al. 2020

Environ Sci Pollut Res

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This study presents the latest results of the groundwater monitoring of a research project, which tested an innovative pump and treat method in combination with an in-situ remediation. This technique was assessed on an abandoned site in Austria, where two hot spots of hexavalent chromium (Cr(VI)) were located. For the in-situ remediation, a strong reducing agent (sodium dithionite) was injected into the underground to reduce Cr(VI) to Cr(III) by using different injection strategies. Throughout this treatment, part of the Cr(VI) is mobilized and not instantly reduced. To prevent a further spreading of the mobilized Cr(VI), the pump and treat method, which uses zero-valent iron to clean the groundwater, was installed downgradient of the hot spots. Based on the groundwater sample analyses, it was possible to distinguish different remediation phases, characterized by excess chromate and excess sulfite. During the excess sulfite conditions, Cr(VI) was successfully removed from the system, but after terminating the sodium dithionite injection, the Cr(VI) rebounded. Keywords Cr(VI) remediation. In-situ treatment. Sodium dithionite injection. Cr(VI) mobilization. Cr(VI) reduction. Rebound effect 2−), but this newly formed ion is rather unstable.

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Characterization and mobility of geogenic chromium in soils and river bed sediments of Asopos basin

Cited by 54 publications

References 19 publications

Community perceptions of local enterprises in environmentally degraded areas

Community perceptions of local enterprises in environmentally degraded areas

Cr(VI) sorption/desorption on untreated and mussel-shell-treated soil materials: fractionation and effects of pH and chromium concentration

Impact of an in-situ Cr(VI)-contaminated site remediation on the groundwater

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