Biogeochemical behavior and pollution control of arsenic in mining areas: A review

Zou, Fan; Huang, Jingyi; Li, Hongguang; Xing, Peng; Xia, Ling; Zhou, Lei; Zhang, Teng; Liu, Zhenghua; He, Qiang; Liu, Feng; Yin, Huaqun; Meng, Delong

doi:10.3389/fmicb.2023.1043024

Cited by 27 publications

(4 citation statements)

References 95 publications

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“…Central Yunnan was renowned for its abundant gold deposits [45]. The long-term mining activities in the study area could lead to the enrichment of As in the soil [46,47]. In this study, soil Profile 2 and Profile 3 near an active gold mine exhibited significantly high As concentrations in all soil layers; even the As content of the surface soil in Profile 3 was 1.7 times higher than the permissible limit (Figure S3).…”

Section: Hm Source Apportionment In Soil Of Cultivation Areas Of D Br...mentioning

confidence: 60%

Bioaccumulation and Potential Risk Assessment of Heavy Metals in Tropical Bamboo Plantations of Dendrocalamus brandisii under Two Cultivation Patterns in Yunnan, China

Cheng,

Dou,

Bao

et al. 2023

Forests

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Heavy metal (HM) pollution nowadays is a hot issue concerning global ecological and food safety. As one of the most important woody bamboos for edible shoots in Southeast Asia and southwest China, Dendrocalamus brandisii usually occurs in red soil with a high HM geological background. However, the bioaccumulation process and possible risks of HMs in their cultivation area remain unclear. In this study, a comprehensive risk assessment of HM pollution was conducted in the main cultivation area of D. brandisii under two cultivation patterns in Yunnan, China. The results revealed that moderate to heavy HM pollution existed in the soil of the study area, while bamboo shoots displayed either no pollution or weak contamination. The “large-area intensive afforestation” cultivation pattern can better control HM pollution in soil and shoots than the “small-scale farmer management” pattern. Strong and complex correlations among HMs were unveiled in both soil and shoot samples. The Cr content of 39% of the shoot samples exceeded China’s national standards. Cu and Zn were the two most easily accumulated HMs in shoots, with BCF of 0.1235 and 0.1101, respectively. Bioaccumulations of As and Cd were positively correlated with their concentrations in soil. Furthermore, the positive matrix factorization model (PMF) identified three main sources of soil HMs, i.e., Pb and Zn from traffic emissions accounting for 30%; Ni, Mn, and Cr from pedogenic parent material making up 35.4%; and As from mining and metallurgical activities accounting for 34.6%. Monte Carlo simulations suggested the probability of total noncarcinogenic risk for children from bamboo shoots was 24.82% and that As in the soil was the primary element of health risk to children (HQc = 13.94%). These findings emphasize the urgent need to control and mitigate HM pollution from the identified sources and may contribute to the sustainable cultivation of D. brandisii and food safety in Yunnan and similar tropical areas with high HM contents.

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Section: Hm Source Apportionment In Soil Of Cultivation Areas Of D Br...mentioning

confidence: 60%

Bioaccumulation and Potential Risk Assessment of Heavy Metals in Tropical Bamboo Plantations of Dendrocalamus brandisii under Two Cultivation Patterns in Yunnan, China

Cheng,

Dou,

Bao

et al. 2023

Forests

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“…The ionic state of As is usually As 5+ or As 3+ , and the ionic state of Cd is Cd 2+ [38]. The redox state of As and Cd mainly includes arsenite, arsenate, and cadmium oxide, which will change with the redox conditions [39]. The adsorption state of As and Cd is mainly through interaction with the adsorption sites of minerals in the ionic form, and thus through adsorption on soil particles, especially on the surfaces of minerals such as iron oxide and alumina [40].…”

Section: Different Forms Of As and CD In Soilmentioning

confidence: 99%

“…Arsenic and cadmium tend to form different precipitates with other ions in the soil [41]. For example, in oxygen-deficient conditions, arsenic can react with calcium ions to produce calcium phosphate precipitates; with iron ions to yield iron-arsenic precipitates; and with aluminum ions to generate aluminum-arsenic precipitates [39]. Cadmium can associate with carbonate ions to form insoluble cadmium carbonate precipitates or with sulfate ions to produce cadmium sulfate precipitates [12].…”

Section: Different Forms 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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“…Despite this, significant regions worldwide are experiencing issues with arsenic contamination in groundwater due to the progression of industrialization and natural causes. As a major water quality concern, arsenic pollution has become an escalating problem. , …”

Section: Introductionmentioning

confidence: 99%

Novel Method for the Arsenic Removal Experiment and Mechanism Analysis

Zhu,

Lin,

Fan

2023

ACS Omega

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This study focuses on the hydrothermal synthesis of magnetically activated carbon and its efficacy in As(III) adsorption. The successful incorporation of magnetite nanoparticles within the porous carbon structure was confirmed, enriching the adsorbent's properties. Comprehensive characterization was performed to analyze the pore size distribution, zeta potential at varying pH levels, and thermostability using thermogravimetric analysis. These adsorbents exhibited high As(III) removal efficiency with a uniform pore distribution. The zeta potentials were observed to decrease with an increase in pH, suggesting a relationship between adsorbent charge and pH. Adsorption dynamics were rigorously modeled using pseudo-first-order, pseudo-secondorder, Elovich, and intraparticle diffusion models for different adsorbents labeled as a, b, c, and d. Each adsorbent displayed unique fitted parameters, revealing varied adsorption capabilities. The study further explored the adsorption kinetics and found that the pseudo-second-order kinetics model and the Langmuir model were most appropriate for describing the adsorption process. Adsorption thermodynamics was also fitted to elucidate the underlying adsorption mechanisms. For the a, b, c, and d adsorbents, the pseudo-first-order model, the q e (cal) values for the four adsorbents were 434.2, 418.4, 283.5, and 279.5 μg/g, respectively. Take adsorbent a as an example; the q m values for 298, 303, 308, and 313 K were 702, 673, 605, and 589 μg/g, respectively, and K L values of these temperatures were 0.021, 0.031, 0.018, and 0.009 L/μg, respectively. For the Langmuir model, the R 2 values at the four temperatures were 0.999, 0.978, 0.985, and 0.993, respectively, which indicated that the Langmuir model showed higher fitness. For the Freundlich model, the K L values (L/μg) at the parameters of these temperatures are 432, 409, 328, and 294, respectively. For the Freundlich model, the 1/n values at temperatures of 298, 303, 308, and 313 K are 0.049, 0.045, 0.052, and 0.035, respectively. For the Freundlich model, the R 2 values at parameters of 298, 303, 308, and 313 K are 0.986, 0.989, 0.982, and 0.872, respectively. For the Temkin model, the B values (in J/mol) are 30.93, 0.894, 0.824, and 0.782 at these temperatures, respectively. The K T values (in L/μg) are 1.02 × 10 6 , 0.07 × 10 6 , 0.003 × 10 6 , and 0.002 × 10 6 , respectively. The R 2 values are 0.973, 0.958, 0.972, and 0.894, respectively. In the end, the ΔH, ΔS, and ΔG values for different adsorbents were calculated. Collectively, these findings contribute significant insights into the design and application of magnetically activated carbon adsorbents for effective As(III) removal.

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Biogeochemical behavior and pollution control of arsenic in mining areas: A review

Cited by 27 publications

References 95 publications

Bioaccumulation and Potential Risk Assessment of Heavy Metals in Tropical Bamboo Plantations of Dendrocalamus brandisii under Two Cultivation Patterns in Yunnan, China

Bioaccumulation and Potential Risk Assessment of Heavy Metals in Tropical Bamboo Plantations of Dendrocalamus brandisii under Two Cultivation Patterns in Yunnan, China

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

Novel Method for the Arsenic Removal Experiment and Mechanism Analysis

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