Dissolution behavior of As and Cd in submerged paddy soil after treatment with stabilizing agents

Yun, Sung Wook; Park, Chan-Gi; Jeon, Ji-Hong; Darnault, Christophe; Baveye, Philippe C.; Yu, Chengtao

doi:10.1016/j.geoderma.2015.11.036

Cited by 21 publications

(9 citation statements)

References 39 publications

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“…According to the risk control standard for soil contamination of agricultural land (China, GB15618-2018) [28], the risk screening values of As and Cd in paddy soil are 30 and 0.4 mg/kg, respectively, while in the other types of soil, they are 40 and 0.3 mg/kg, respectively. Figure 1 illustrates the extent of As and Cd co-contamination in soils across various regions, and this As and Cd co-contamination is usually found in rice-growing areas [29][30][31][32][33][34][35]. In several regions, such as Huize County in Yunnan Province, China, and Jhang, Pakistan, there have been notable instances of arsenic or cadmium pollution surpassing acceptable limits [29,33].…”

Section: Forms and Transformation Mechanisms Of As And CD In Soilmentioning

confidence: 99%

Remediation of Arsenic and Cadmium Co-Contaminated Soil: A Review

Lin,

Ma,

Liu

et al. 2024

Sustainability

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The concurrent presence of arsenic (As) and cadmium (Cd) contamination in soil is widespread and severe, highlighting the need for remediation. However, remediating As and Cd co-contaminated soils is more complex than remediating soils contaminated with a single heavy metal due to the opposite properties of As and Cd in soil. Thus, the different forms of As and Cd in co-contaminated soils and their transformation rules have been systematically reviewed in this paper. Simultaneously, hyperaccumulators and immobilization amendments used in the remediation of As–Cd co-contaminated soil were reviewed. Moreover, the mechanisms of phytoremediation and chemical immobilization techniques in the treatment of As and Cd co-contaminated soil and the remediation effects were expounded in detail. To promote the development of ecological civilization, this paper proposes further remediation strategies and guidance for the remediation of As–Cd co-contaminated soil.

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Section: Forms and Transformation Mechanisms Of As And CD In Soilmentioning

confidence: 99%

Remediation of Arsenic and Cadmium Co-Contaminated Soil: A Review

Lin,

Ma,

Liu

et al. 2024

Sustainability

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“…The in situ immobilization technique is frequently combined with other soil remediation methods, such as soil dressing, in which a layer of an uncontaminated soil or amendment (e.g., manure, fertilizer, compost, peat) is applied to the surface of land. This integrated approach can effectively isolate the contaminated soil below the rhizosphere while concurrently diminishing the availability of heavy metals in the surface soil [15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Combining Soil Immobilization and Dressing Techniques for Sustaining the Health of Metal-Contaminated Arable Soils

Yoon,

Lee,

Park

et al. 2024

Sustainability

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The combination of lime immobilization of metals and soil dressing has been a prevalent practice in Korea for remediating metal-contaminated arable soils. However, there have been limited reports on whether this method effectively sustains soil health after remediation, particularly in arable soils. This study undertook a comparative assessment of the soil health index (SHI) across metal-contaminated arable lands, arable soils remediated with lime immobilization and soil dressing, and uncontaminated soils. A total 389 soil samples were collected from these sites and analyzed for nineteen indicators encompassing physical, chemical, and biological properties. To assess soil health, these indicators were screened using principal component analysis, yielding five minimum data set (MDS) indicators: total nitrogen, clay content, dehydrogenase activity, bacterial colony-forming units, and available phosphorus. Among these MDS indicators, total nitrogen exhibited the highest value as the principal component contributing to soil health assessment. Scores of the MDS indicators exhibited significant correlation with those of total data set indicators, affirming the appropriateness of the soil health assessment adopted in this study. The SHI of the remediated arable soils (0.48) surpassed those of the contaminated soils (0.47) and were statistically comparable to those of the uncontaminated forest (0.51) and upland (0.51) soils. The health of the contaminated soils demonstrated a high dependence on soil properties rather than metal concentrations. These findings underscore the robustness of the combined immobilization and soil dressing method for sustaining the health of contaminated arable soils post-remediation.

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“…In China, the heavy metal contents in 16.1% of the sampling sites are above the allowed threshold, 7.0% of which is Cd (Ministry of Environmental Protection and Ministry of Land and Resources, 2014). Due to its easy migration and transformation, high bioaccumulation, difficult removal, and persistent toxicity [ 7 ], excess Cd often jeopardizes plant growth, crop production, and microorganism reproduction in soils [ 8 , 9 , 10 ]. Cd pollution leads to soil degradation, and also reduces soil productivity, which in turn threatens food quality, human health, and environmental safety.…”

Section: Introductionmentioning

confidence: 99%

Cadmium-Tolerant Bacterium Strain Cdb8-1 Contributed to the Remediation of Cadmium Pollution through Increasing the Growth and Cadmium Uptake of Chinese Milk Vetch (Astragalus sinicus L.) in Cadmium-Polluted Soils

Wang,

Sun,

Wang

et al. 2023

Plants

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Cadmium (Cd) pollution has attracted global attention because it not only jeopardizes soil microbial ecology and crop production, but also threatens human health. As of now, microbe-assisted phytoremediation has proven to be a promising approach for the revegetation of Cd-contaminated soil. Therefore, it is important to find such tolerant microorganisms. In the present study, we inoculated a bacteria strain tolerant to Cd, Cdb8-1, to Cd-contaminated soils and then explored the effects of Cdb8-1 inoculation on the performance of the Chinese milk vetch. The results showed plant height, root length, and fresh and dry weight of Chinese milk vetch grown in Cdb8-1-inoculated soils increased compared to the non-inoculated control group. The inoculation of Cd-contaminated soils with Cdb8-1 also enhanced their antioxidant defense system and decreased the H2O2 and malondialdehyde (MDA) contents, which alleviated the phytotoxicity of Cd. The inoculation of Cdb8-1 in Cd-contaminated soils attenuated the contents of total and available Cd in the soil and augmented the BCF and TF of Chinese milk vetch, indicating that the combined application of Cd-tolerant bacteria Cdb8-1 and Chinese milk vetch is a potential solution to Cd-contaminated soils.

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Dissolution behavior of As and Cd in submerged paddy soil after treatment with stabilizing agents

Cited by 21 publications

References 39 publications

Remediation of Arsenic and Cadmium Co-Contaminated Soil: A Review

Remediation of Arsenic and Cadmium Co-Contaminated Soil: A Review

Combining Soil Immobilization and Dressing Techniques for Sustaining the Health of Metal-Contaminated Arable Soils

Cadmium-Tolerant Bacterium Strain Cdb8-1 Contributed to the Remediation of Cadmium Pollution through Increasing the Growth and Cadmium Uptake of Chinese Milk Vetch (Astragalus sinicus L.) in Cadmium-Polluted Soils

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