Special Issue "Arsenic Geochemistry and Health"

A special issue of Minerals (ISSN 2075-163X). This special issue belongs to the section "Environmental Mineralogy and Biogeochemistry".

Deadline for manuscript submissions: 15 May 2019

Special Issue Editor

Guest Editor
Prof. Dr. Kyoung-Woong Kim

School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology (GIST) , Gwangju, Republic of Korea
Website | E-Mail
Interests: arsenic geochemistry; soil remediation; appropriate technology; removal of As in water

Special Issue Information

Dear Colleagues,

Elevated concentrations of As in groundwater have been reported in Taiwan, West Bengal and Bangladesh, resulting in a major public health issue. Despite these concerns, groundwater is still a major source of drinking water in the developing world, especially in Southeast Asia. Recently, unsafe level of As also been revealed in the delta of the Mekong River. There has been a great deal of research about the enrichment process, geographic characteristics and mitigation of As enriched groundwater to avoid the consumption of this unsafe groundwater.

Arsenic is also gained great notoriety because of the toxic properties of a number of its compounds. Arsenic contamination in soil is mainly derived from the mining and smelting activities. Remediation of As-contaminated soil can be achieved by many technologies, including biological treatment, phytoremediation, solidification/stabilization, and so on. However, these techniques cannot be a final solution due to the difficulty in application and their high costs.

In order to overcome these uncertainties in the issue of As geochemistry and human health, in this Special Issue, all the research outcomes in the field of geochemistry, toxicity, risk assessment and its mitigation and remediation will be welcome.

Prof. Dr. Kyoung-Woong Kim
Guest Editor

Manuscript Submission Information

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Keywords

  • Arsenic
  • groundwater
  • mining and smelting
  • geochemistry
  • toxicity
  • risk assessment
  • mitigation and remediation

Published Papers (3 papers)

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Research

Open AccessArticle Accumulation of Arsenic and Heavy Metals in Native and Cultivated Plant Species in a Lead Recycling Area in Vietnam
Minerals 2019, 9(2), 132; https://doi.org/10.3390/min9020132
Received: 31 December 2018 / Revised: 20 February 2019 / Accepted: 20 February 2019 / Published: 24 February 2019
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Abstract
This study was conducted to determine the soil contamination and the accumulation of arsenic (As) and heavy metals including chromium (Cr), copper (Cu), zinc (Zn), cadmium (Cd), and lead (Pb) in 15 native and cultivated plant species in a Pb recycling area of [...] Read more.
This study was conducted to determine the soil contamination and the accumulation of arsenic (As) and heavy metals including chromium (Cr), copper (Cu), zinc (Zn), cadmium (Cd), and lead (Pb) in 15 native and cultivated plant species in a Pb recycling area of Dong Mai village, Hung Yen Province, Vietnam. The analysis of 32 soil samples collected from seven different sites in the study area revealed that the contents of Al, Fe, As, Cr, Cu, Zn, Cd, and Pb in the soils ranged from 6200–32,600, 11,300–55,500, 5.4–26.8, 24.9–290, 66.0–252, 143–455, 0.71–1.67, and 370–47,400 mg/kg, respectively. The contents of As, Cr, Cu, Zn, Cd, and Pb in rice grains and the shoots of 15 plant species ranged from 0.14–10.2, 1.00–10.2, 5.19–23.8, 34.7–165, 0.06–0.99, and 2.83–1160 mg/kg-dry weight (DW), respectively. Hymenachne acutigluma (Steud.) Gilliland, a potential hyperaccumulator of Pb (1160 mg/kg-DW), is considered the best candidate for phytoremediation of Pb-contaminated soil. The cultivation of rice and vegetables, and the use of some native plants for food for humans, pigs, and cattle should be managed with consideration of the accumulation of Pb in their aboveground biomass. Full article
(This article belongs to the Special Issue Arsenic Geochemistry and Health)
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Open AccessArticle Release Behaviors of Arsenic and Heavy Metals from Arsenic Sulfide Sludge during Simulated Storage
Minerals 2019, 9(2), 130; https://doi.org/10.3390/min9020130
Received: 21 December 2018 / Revised: 10 February 2019 / Accepted: 20 February 2019 / Published: 23 February 2019
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Abstract
Non-ferrous metal smelting enterprises produce hundreds of thousands of tons of arsenic sulfide sludge (ASS) each year in China. Most of the ASS are stored at the companies without enough preventive measures. During the storage and natural drying process, arsenic sulfide is easily [...] Read more.
Non-ferrous metal smelting enterprises produce hundreds of thousands of tons of arsenic sulfide sludge (ASS) each year in China. Most of the ASS are stored at the companies without enough preventive measures. During the storage and natural drying process, arsenic sulfide is easily oxidized, thereby causing secondary pollution and increasing environmental risks. In this paper, experiments of simulated storage were used to study the release characteristics of heavy metals. During the simulated storage, the release concentrations of As, Pb, and Cd increased rapidly at first and then slowly. Although the total amount of arsenic released was the largest, the release ratio was in the order of Cd > Pb > As. The effects of different atmospheres and conditions on the release of arsenic and heavy metals were explored. The more the H2SO4 in the sludge, the higher the release concentration, and the addition of an appropriate amount of Ca(OH)2 is beneficial for reducing the release of heavy metals. Finally, SEM, XRD and TG-DTG techniques were carried out to confirm that the release of heavy metals was caused by the oxidation process resulting from the residual H2SO4 in the ASS and the air. Full article
(This article belongs to the Special Issue Arsenic Geochemistry and Health)
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Graphical abstract

Open AccessArticle Influence of pH and Contaminant Redox Form on the Competitive Removal of Arsenic and Antimony from Aqueous Media by Coagulation
Minerals 2018, 8(12), 574; https://doi.org/10.3390/min8120574
Received: 24 October 2018 / Revised: 30 November 2018 / Accepted: 3 December 2018 / Published: 6 December 2018
Cited by 4 | PDF Full-text (2145 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
In most countries, arsenic (As) and antimony (Sb) are regulated pollutants, due to their significant impacts on the environment and human health. Iron-based (Fe) coagulants play a fundamental role in the removal of both elements from aqueous media. This study aims to investigate [...] Read more.
In most countries, arsenic (As) and antimony (Sb) are regulated pollutants, due to their significant impacts on the environment and human health. Iron-based (Fe) coagulants play a fundamental role in the removal of both elements from aqueous media. This study aims to investigate the competitive removal of As and Sb in relation to Fe solubility. Coagulation experiments were conducted in synthetic water under various pH and contaminant loading, using ferric chloride (FC) as a coagulant. In the single system, the pentavalent species significantly reduced the Fe solubility and thereby enhanced the mobility of As and Sb under these environmental conditions. The coexistence of pentavalent and trivalent species in the binary system considerably decreases the Fe solubility at acidic conditions while enhancing the dissolution under alkaline conditions, thus affecting the overall removal of both species. The presence of four redox species in the quaternary system decreases the Fe solubility remarkably over a wide pH range, with better Sb removal, as compared to As under similar conditions. The adsorption study of the single system showed a decrease in As(V) adsorption capacity at higher concentration, while in the binary system, the Sb(III) showed strong adsorption potential, compared to other species. In the quaternary system, the presence of all four redox species has a synergistic effect on total Sb adsorption, in comparison to the total As. Furthermore, the results of Fourier transform infrared (FT-IR) analysis of FC composite contaminant flocs confirm that the combined effect of charge neutralization and inner sphere complexation might be a possible removal mechanism. These findings may facilitate the fate, transport and comparative removal of redox species in the heterogeneous aquatic environment. Full article
(This article belongs to the Special Issue Arsenic Geochemistry and Health)
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