Leaching of arsenic, copper and chromium from thermally treated soil

Kumpienė, Jūratė; Nordmark, Désirée; Hamberg, Roger; Carabante, Ivan; Simanavičienė, Rūta; Aksamitauskas, Vladislovas Česlovas

doi:10.1016/j.jenvman.2016.08.080

Cited by 16 publications

(7 citation statements)

References 16 publications

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“…In fact, beyond the cut-off 4 defined in Table 1, soils must be managed as dangerous residual materials, or treated to reach one of the cut-offs 1, 2, 3 or 4. Nowadays, the only available option for the remediation of these sites dealing with mixed contamination includes thermal treatment to destroy organic contaminants (PCP, PCDD/F) followed by immobilization of inorganic contaminants (As, Cr, Cu) through stabilization/solidification or landfilling (Kumpiene et al, 2016. The cost of managing volumes of contaminated soils exceeding the cut-offs 4 is very expensive compared to volumes of contaminated soils between the cutt-offs 3 and cut-offs 4.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Comparison of different interpolation methods and sequential Gaussian simulation to estimate volumes of soil contaminated by As, Cr, Cu, PCP and dioxins/furans

Metahni

Coudert

Gloaguen

et al. 2019

Environmental Pollution

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Section: Accepted Manuscriptmentioning

confidence: 99%

Comparison of different interpolation methods and sequential Gaussian simulation to estimate volumes of soil contaminated by As, Cr, Cu, PCP and dioxins/furans

Metahni

Coudert

Gloaguen

et al. 2019

Environmental Pollution

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“…Numerous methods including biological remediation, , chemical leaching, reduction, extraction, immobilization, and electrokinetic processing , have been used to treat chromium-contaminated soils. Large-scale biological remediation is difficult because the required treatment period is very long and the growth of plants and microbes can be easily affected by external factors and lack of knowledge about the chromium uptake/translocation mechanism .…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Removal of Trivalent Chromium and Hexavalent Chromium from Soil Using a Modified Bipolar Membrane Electrodialysis System

Liu

et al. 2020

Environ. Sci. Technol.

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In this study, a modified bipolar membrane electrodialysis system equipped with a "back-to-back" soil compartment was fabricated for simultaneous removal of trivalent chromium (Cr(III)) and hexavalent chromium (Cr(VI)) from contaminated soils. The results showed that the soil solution pH had a significant effect on the Cr(III) and Cr(VI) desorption, and the desorption data fit well with the Elovich kinetic model. Current density had an obvious effect on Cr(III) and Cr(VI) removal, cell voltage, soil pH, current efficiency, and specific energy consumption, and the optimal current density was 2.0 mA/cm 2 . The removal efficiencies of Cr(III) and Cr(VI) were both 99.8%, while Cr(III) and Cr(VI) recoveries were somewhat lower at 87 and 90%, respectively, because some Cr(III) and Cr(VI) were adsorbed by the membranes. An energy consumption analysis indicates that the back-to-back soil compartment equipped system increased the current efficiency and decreased the specific energy consumption. When a system equipped with two back-to-back soil compartments was used to remove chromium from soil, the current efficiency increased to 28.8% and the specific energy consumption decreased to 0.048 kWh/g. The experimental results indicate that the proposed process has the potential to be an effective technique for the treatment of soil contaminated with heavy metals.

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“…Therefore, it is important to develop methodologies for the removal of toxic elements in those types of waste, predicting the difficulties related to their use and proposing viable alternatives for reuse or disposal (SANTOS et al, 2018;TANG et al, 2015;FERRANI et al, 2015). Numerous researchers have turned their attention to the efficacy and use of electro-removal processes in CCA-treated wood compounds as well as avoiding the possible contamination of soils and water from the use of discarded CCA-treated wood at the end of its service life (FDEP, 2017;KUMPIENE et al, 2016;OHGAMI et al, 2015;.…”

Section: Introductionmentioning

confidence: 99%

“…Studies in the last decades have shown concern over the remediation of CCA-treated wood by the use of different extractive solvents, such as oxalic acid, phosphoric acid, sulfuric acid, EDTA, hydrogen peroxide, and their mixture in different proportions (MOHAJERANI;VAJNA;ELLCOCK, 2018;KUMPIENE et al, 2016;JANIN et al, 2012). Janin et al (2012) show that the best cost-benefit ratio lies in the use of sulfuric acid-based electrolytic extractive solutions, but state that oxalic acid has a higher extraction yield when compared to EDTA, phosphoric acid, or sulfuric acid alone.…”

Section: Introductionmentioning

confidence: 99%

Electro-removal of copper, chromium, and arsenic from chromated copper arsenate treated waste wood

Castro

Kehl

Candaten

et al. 2021

Eng. Sanit. Ambient.

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Wood is a renewable material considered eco-friendly and used for various purposes. While wood treated with chromated copper arsenate (CCA) does not deteriorate, its final disposal may entail risks due to the concentration and toxicity of the components. The removal of CCA from wood can be achieved in different ways. This study focuses on the reduction of the concentrations of Cu, Cr, and As chemical species by the electro-removal technique, aiming to obtain biomass with low deleterious potential that would allow multiple uses or safe disposal in landfills. The analytical results showed reductions of 79.5, 87.4, and 81.3% in the mean concentrations of Cu, Cr, and As, respectively. It is worth mentioning the occurrence of the fungus Xylaria sp. after treatment 6 (60 min, 5 g, and 25 V), further suggesting that the method was effective. Samples of these fungi were identified from isolates by culture in medium, DNA extraction, and sequencing of the Internal Transcribed Spacer (ITS) region.

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Leaching of arsenic, copper and chromium from thermally treated soil

Cited by 16 publications

References 16 publications

Comparison of different interpolation methods and sequential Gaussian simulation to estimate volumes of soil contaminated by As, Cr, Cu, PCP and dioxins/furans

Comparison of different interpolation methods and sequential Gaussian simulation to estimate volumes of soil contaminated by As, Cr, Cu, PCP and dioxins/furans

Simultaneous Removal of Trivalent Chromium and Hexavalent Chromium from Soil Using a Modified Bipolar Membrane Electrodialysis System

Electro-removal of copper, chromium, and arsenic from chromated copper arsenate treated waste wood

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