Arsenic Speciation and Extraction and the Significance of Biodegradable Acid on Arsenic Removal—An Approach for Remediation of Arsenic-Contaminated Soil

Van, Thinh Nguyen; Osanai, Yasuhito; Nguyen, Hai Do; Kurosawa, Kiyoshi

doi:10.3390/ijerph14090990

Cited by 19 publications

(4 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Remediation methods to reduce the heavy-metal contents of DE by washing with water, citric acid solution, or EDTA solution significantly reduced iAs concentrations, with citric acid and EDTA being the most effective wash treatments (Figure ). Use of these treatments were selected on the basis of previous work indicating that EDTA and citric acid have the ability to chelate and solubilize heavy metals, possibly because their carboxylic acid functional groups chelate cations. − Further, Van et al reported that organic acids are able to solubilize As(III) and As(V) in As-containing Fe oxides by chelating Fe 3+ counterions . Still, simply washing DE with water alone significantly reduced iAs concentrations.…”

Section: Discussionsupporting

confidence: 89%

“…37−40 Further, Van et al reported that organic acids are able to solubilize As(III) and As(V) in As-containing Fe oxides by chelating Fe 3+ counterions. 41 Still, simply washing DE with water alone significantly reduced iAs concentrations. The washing-treatment data indicate that a large fraction of the iAs in DE is highly soluble and thus can be removed from this filter aid by even a relatively short washing step.…”

Section: ■ Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Factors Affecting Transfer of the Heavy Metals Arsenic, Lead, and Cadmium from Diatomaceous-Earth Filter Aids to Alcoholic Beverages during Laboratory-Scale Filtration

Redan

Jablonski

Halverson

et al. 2019

J. Agric. Food Chem.

View full text Add to dashboard Cite

Filtration methods for alcoholic fermented beverages often use filter aids such as diatomaceous earth (DE), which may contain elevated amounts of the heavy metals arsenic (As), lead (Pb), and cadmium (Cd). Here, we evaluated factors affecting transfer of these heavy metals from DE to beer and wine. A laboratory-scale filtration system was used to process unfiltered ale, lager, red wine, and white wine with three types of food-grade DE. Filtrate and DE were analyzed for heavy metals using ICP-MS, in addition to LC-ICP-MS for As-speciation analysis. Use of 2 g/L DE containing 5.4 mg/kg soluble inorganic As (iAs) for filtering beer and wine resulted in significant (p < 0.05) increases of 11.2–13.7 μg/L iAs in the filtered beverage. There was a significant (p < 0.05) effect from the DE quantity used in filtration on the transfer of iAs in all beverage types, whereas no alterations were observed for Pb and Cd levels. Methods to wash DE using water, citric acid, or EDTA all significantly (p < 0.05) reduced iAs concentrations, whereas only EDTA significantly reduced Pb levels. Cd concentrations were not affected by any wash method. These data indicate that specific steps can be taken to limit heavy-metal transfer from DE filter aids to beer and wine.

show abstract

Section: Discussionsupporting

confidence: 89%

Section: ■ Discussionmentioning

confidence: 99%

Factors Affecting Transfer of the Heavy Metals Arsenic, Lead, and Cadmium from Diatomaceous-Earth Filter Aids to Alcoholic Beverages during Laboratory-Scale Filtration

Redan

Jablonski

Halverson

et al. 2019

J. Agric. Food Chem.

View full text Add to dashboard Cite

show abstract

“…If the total As results (third column of Table 1 ) are compared with those of Table 2 , some deductions can be made. First of all, the difference between the sum of the fractions in Table 2 and the total content of As could be assimilated to the so-called “residual” As; i.e., the As that formed its own mineral species (see [ 26 ] for an exhaustive collection of As species in soils), or the As that was found as an impurity in the crystalline lattice of other non-arsenical mineral phases. In most samples, the residual As would represent more than half of the As content.…”

Section: Resultsmentioning

confidence: 99%

Arsenic in Soils Affected by Mining: Microscopic Studies vs. Sequential Chemical Extraction

Álvarez-Quintana

Álvarez

Ordóñez

2020

IJERPH

View full text Add to dashboard Cite

Soil samples from three inactive mines, corresponding to different Arsenic-bearing mineralization types, were collected and studied. The aim was to determine the influence of mine wastes mineralogy/geochemistry and texture in As mobility and to compare results from sequential chemical extraction and microscopic techniques (optical and electron) at a grain scale. Arsenic in soils is found mainly associated to the residual fraction, indicating that mechanical As dispersion is mainly responsible for As soil pollution. The use of objective microscopic techniques (i.e., Scanning Electron Microscopy-Energy Dispersive Spectroscopy -SEM-EDS-, High Resolution Transmission Electron Microscopy -HR-TEM) has pointed out that the selected sequential extraction method overestimates the role of Mn amorphous oxy-hydroxides and organic matter in As retention while underestimating the mechanism of As adsorption onto clay particle surfaces.

show abstract

“…Most plants growing in soils polluted with toxic metals show a physiology in which they can avoid the uptake of metals, while in others, the accumulation process may differ between different parts of the plant. Mechanisms of toxic metal accumulation at the whole plant level involve the regulation of several processes, including metal uptake by the root [52]. Accumulation of toxic metals in plant roots can cause disturbances in the ratio of nutrients in plant tissues and changes in water balance [53].…”

Section: Evaluation Of the Accumulation Potential Of As And CD In The...mentioning

confidence: 99%

Evaluation of the Phytoremediation Potential of the Sinapis alba Plant Using Extractable Metal Concentrations

Vasilache,

Diacu,

Cananau

et al. 2023

Plants

View full text Add to dashboard Cite

Testing the feasibility of soil phytoremediation requires the development of models applicable on a large scale. Phytoremediation mechanisms include advanced rhizosphere biodegradation, phytoaccumulation, phytodegradation, and phytostabilization. The aim of this study was to evaluate the phytoremediation potential of the Sinapis alba. Identification of the factors influencing the extraction process of metals from contaminated soils in a laboratory system suitable for evaluating the phytoavailability of these metals in three solutions (M1-CaCl2, M2-DTPA, and M3-EDTA) included the following: distribution of metals in solution (Kd), soil properties and mobile fractions (SOC, CEC, pH), response surface methodology (RSM), and principal component analysis (PCA). The evaluation of the phytoremediation potential of the Sinapis alba plant was assessed using bioaccumulation coefficients (BACs). The accumulation of heavy metals in plants corresponds to the concentrations and soluble fractions of metals in the soil. Understanding the extractable metal fractions and the availability of metals in the soil is important for soil management. Extractable soluble fractions may be more advantageous in total metal content as a predictor of bioconcentrations of metals in plants. In this study, the amount of metal available in the most suitable extractors was used to predict the absorption of metals in the Sinapis alba plant. Multiple regression prediction models have been developed for estimating the amounts of As and Cd in plant organs. The performance of the predictive models generated based on the experimental data was evaluated by the adjusted coefficient of determination (aR2), model efficiency (RMSE), Durbin–Watson (DW) test, and Shapiro–Wilk (SW) test. The accumulation of the analyzed metals followed the pattern Root > Pods > Leaves > Seeds, stems > Flowers for As and Leaves > Root > Stem > Pods > Seeds > Flowers for Cd in soil contaminated with different metal concentrations. The obtained results showed a phytoremediation potential of the Sinapis alba plant.

show abstract

Arsenic Speciation and Extraction and the Significance of Biodegradable Acid on Arsenic Removal—An Approach for Remediation of Arsenic-Contaminated Soil

Cited by 19 publications

References 60 publications

Factors Affecting Transfer of the Heavy Metals Arsenic, Lead, and Cadmium from Diatomaceous-Earth Filter Aids to Alcoholic Beverages during Laboratory-Scale Filtration

Factors Affecting Transfer of the Heavy Metals Arsenic, Lead, and Cadmium from Diatomaceous-Earth Filter Aids to Alcoholic Beverages during Laboratory-Scale Filtration

Arsenic in Soils Affected by Mining: Microscopic Studies vs. Sequential Chemical Extraction

Evaluation of the Phytoremediation Potential of the Sinapis alba Plant Using Extractable Metal Concentrations

Contact Info

Product

Resources

About