Effect of simulated acid rain on leaching and transformation of vanadium in paddy soils from stone coal smelting area

Xiao, Xiyuan; Jiang, Zhichao; Guo, Zhaohui; Wang, Mingwei; Zhu, Huiwen; Han, Xiaoqing

doi:10.1016/j.psep.2017.05.006

Cited by 37 publications

(6 citation statements)

References 28 publications

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“…Additionally, based on Figure 8 , after the leaching process, the majority of the Cr is primarily concentrated in the middle sections (6–8 cm) of the soil columns, whereas the content in the shallow layers is notably lower. However, experiments simulating V elements in acid rain leaching near smelters yielded different findings [ 16 ]: after ten years of rainwater leaching, the distribution of vanadium (V) elements in the soil was mainly concentrated in the surface layer (0–20 cm). Despite leaching with rainwater of varying pH values, the chromium content remained relatively high in the profiled soil, indicating that most of the chromium was fixed in the soil.…”

Section: Discussionmentioning

confidence: 99%

“…Acid rain leads to the acidification of water bodies and soil surfaces, causing significant environmental damage [ 14 ]. In light of this, researchers conduct indoor simulated rainfall experiments to study the leaching characteristics of heavy metal elements in soil under acid rain conditions [ 15 , 16 , 17 , 18 , 19 ]. Concerning soils subjected to simulated rainwater leaching, most researchers focus on changes in element speciation before and after leaching [ 20 ].…”

Section: Introductionmentioning

confidence: 99%

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The Release and Migration of Cr in the Soil under Alternating Wet–Dry Conditions

Chen,

Liang

et al. 2024

Toxics

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In recent decades, chromium contamination in soil has emerged as a serious environmental issue, demanding an exploration of chromium’s behavioral patterns in different soil conditions. This study aims to simulate the release, migration, and environmental impact of chromium (Cr) in contaminated soils under natural rainfall conditions (wet–dry cycles). Clean soils sourced from Panzhihua were used to cultivate chromium-containing soils. Simulated rainfall, prepared in the laboratory, was applied to the cultivated chromium-containing soils in indoor simulated leaching experiments. The experiments simulated three years of rainfall in Panzhihua. The results indicate that soils with higher initial Cr contents result in higher Cr concentrations in the leachate, but all soils exhibit a low cumulative Cr release. The leachate shows similar patterns in total organic carbon (TOC), pH, electrical conductivity, and Cr content changes. An analysis of the speciation of Cr in the soil after leaching reveals a significant decrease in the exchangeable fraction for each Cr species, while the residual and oxidizable Cr fractions exhibit notable increases. The wet–dry cycle has the following effects on the soil: it induces internal reduction reactions in the soil, leading to the reduction of Cr(VI) to Cr(III); it alters the binding of Cr ions to the soil, affecting the migration of chromium; and it involves microorganisms in chemical processes that consume organic matter in the soil. After three years of rainwater leaching, chromium-containing soils released a relatively low cumulative amount of total chromium, resulting in a reduced potential risk of groundwater system contamination. Most of the chromium in the chromium-containing soil is fixed within the soil, leading to less biotoxicity.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Release and Migration of Cr in the Soil under Alternating Wet–Dry Conditions

Chen,

Liang

et al. 2024

Toxics

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“…There are pairwise V exchanges among soil, surface water, and groundwater. Surface runoff and leaching contribute to V transportation from soil to surface water and groundwater, respectively. , Groundwater discharge promotes V transport from groundwater to soil and surface water, while recharge activities cause V migration from surface water to groundwater . For example, V mobility between surface water and groundwater has been characterized using halides as tracers at a former mill tailing site in Grand Junction, CO, USA, and it was found that V was mobilized in the saturated gypsum-rich zone .…”

Section: Migration and Transformationmentioning

confidence: 99%

Vanadium in the Environment: Biogeochemistry and Bioremediation

Zhang,

et al. 2023

Environ. Sci. Technol.

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“…For example, the V, Cd, Cr, and lead (Pb) content in contaminated soil from stone coal smelting areas was 10.4, 5.64, 40.2, and 2.35 times higher than their corresponding local soil background values, respectively [6]. Soils contaminated with multiple TMs can degrade microbes, deteriorate the quality of surface water and groundwater, damage vegetable growth, and severely threaten human health [7,8]. Therefore, the potential hazards of V and other TMs in the soil around V-containing stone coal smelting sites require urgent attention.…”

Section: Introductionmentioning

confidence: 99%

“…This may lead to differences in the accumulation characteristics of TMs in surrounding soil-vegetable systems and critical factors affecting TM transfer as well as the ingestion risk. Nevertheless, more research is biased towards single V contamination, and no attention has been paid to other associated metal contamination in a V mining area and smelting area [8,19]. Thus, it is important to investigate the accumulation of V and other TMs in the soils and vegetables near stone coal smelting areas and assess human health risks via vegetable consumption.…”

Section: Introductionmentioning

confidence: 99%

Impact of Vanadium-Containing Stone Coal Smelting on Trace Metals in an Agricultural Soil–Vegetable System: Accumulation, Transfer, and Health Risks

Jiang

Xiao

Guo

et al. 2023

IJERPH

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Dietary exposure to trace metals (TMs) through vegetable consumption has been identified as a potential risk to human health. Fifty-one paired agricultural soil and leaf vegetable samples were collected around V-containing stone coal smelting sites in Hunan Province, China, to study the contamination and transfer characteristics of TMs (Cd, Cr, Cu, Pb, V, and Zn) in the soil–vegetable system. The health risk to local residents through vegetable ingestion was evaluated using Monte Carlo simulations. The results showed that 96.2%, 23.1%, 53.8%, 30.8%, 96.2%, and 69.2% of the soil samples had Cd, Cr, Cu, Pb, V, and Zn contents exceeding their related maximum allowable values, respectively. Cadmium and V were the primary pollutants based on the Igeo values. Moreover, 46.9% and 48.4% of vegetable samples exceeded the maximum permissible levels for Cd and Pb, respectively. There was a negative correlation between the bioaccumulation factors for Cd and V of the vegetable and soil physicochemical properties, including pH, organic matter, and free Fe2O3 content. Ingestion of garland chrysanthemum and pak choi poses high health risks, and Cd, V, and Pb were the primary contributors. These findings will help design strategies to minimize contamination and human exposure to soil–vegetable systems caused by V-containing stone coal smelting.

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Effect of simulated acid rain on leaching and transformation of vanadium in paddy soils from stone coal smelting area

Cited by 37 publications

References 28 publications

The Release and Migration of Cr in the Soil under Alternating Wet–Dry Conditions

The Release and Migration of Cr in the Soil under Alternating Wet–Dry Conditions

Vanadium in the Environment: Biogeochemistry and Bioremediation

Impact of Vanadium-Containing Stone Coal Smelting on Trace Metals in an Agricultural Soil–Vegetable System: Accumulation, Transfer, and Health Risks

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