Study of cadmium distribution coefficient in acidic and calcareous soils of Iran: Comparison between low and high concentrations

Rezaei, Mohammad; Farahbakhsh, Mohsen; Shahbazi, Karim; Marzi, Mostafa

doi:10.1016/j.eti.2021.101516

Cited by 9 publications

(5 citation statements)

References 60 publications

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“…Several previous studies (Baghernejad et al, 2014;Fan et al, 2017) found that heavy metal concentration in the experiment solution had an effect on K d values in porous media. Cd sorption K d values were found to be high at low initial concentrations and increased with an increase in the initial concentration (Rezaei et al, 2021), in contrast to high concentrations. According to the literature, higher K d values obtained with lower metal concentrations are associated with high selectivity sorption sites with relatively strong binding energies.…”

Section: Metal Concentration Type Sorption Systems Biosolids Andmentioning

confidence: 81%

“…It plays a key role in predicting the fate and transport of heavy metals in the environment. Almost of afore-mentioned previous investigations demonstrate that K d values of interest in heavy metals do not only depend on the chemical and physical characteristics of soil but also on the nature and characteristics of the metal involved as well as the experimental conditions (such as experiments time and temperature, and some added material to experiment soils) (Behbahani et al, 2020;Braz et al, 2013;Lin et al, 2017a;Rezaei et al, 2021;Shaheen et al, 2013). (Kim, 2014;Shaheen et al, 2018;Tahervand & Jalali, 2017;Zhao et al, 2014).…”

Section: Factors Affecting Kd Values Of Soil Heavy Metals: a Brief Co...mentioning

confidence: 99%

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A Review of the Distribution Coefficient (Kd) of Some Selected Heavy Metals over the Last Decade (2012-2021)

Seidou¹,

Wang²,

Espoire³

et al. 2022

GEP

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This review synthesizes the methods for estimating the distribution coefficient (K d ) and provides a compilation of K d values for five heavy metals (As, Pb, Cd, Cu, and Zn) based on research published in the last decade (2012)(2013)(2014)(2015)(2016)(2017)(2018)(2019)(2020)(2021). We used the PRISMA method to ensure the transparency of the collected data. For mono-metal systems (MS), the K d values ranged from 10 −2 to 10 7 L/kg for Pb, from 10 −2 to 10 6 L/kg for Cd, As, and Zn, and from 10 −2 to 10 5 L/kg for Cu. In competitive systems (CS), the K d values ranged from 10 −2 to 10 5 L/kg for Cu, and 10 −2 to 10 4 L/kg for Pb, Cd, and Zn, while no K d value for As was reported under CS. It was found that the K d values of heavy metals are affected not only by soil chemical and physical properties but also by the nature and characteristics of the metal involved along with experimental conditions. The totals references number of K d data observation per element metal are represented as follows: Cd 35 (50%), Zn 35 (50%), Pb 33 (47.14%), Cu 33 (47.14%), and As 19 (27.14%). Overall, most research was done 1) on MS rather than CS, 2) on sorption rather than desorption, 3) on soil rather than sediments , and 4) most literature have reported the K d values, derived from batch method than on column method. Despite significant progress over the past decade towards a better understanding of the variation in K d values and the effect of factors influencing them to provide important parameters for predicting and controlling toxic metals in soils, additional research is still warranted to the complexity of underlying processes.

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Section: Metal Concentration Type Sorption Systems Biosolids Andmentioning

confidence: 81%

Section: Factors Affecting Kd Values Of Soil Heavy Metals: a Brief Co...mentioning

confidence: 99%

A Review of the Distribution Coefficient (Kd) of Some Selected Heavy Metals over the Last Decade (2012-2021)

Seidou¹,

Wang²,

Espoire³

et al. 2022

GEP

View full text Add to dashboard Cite

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“…As there were significant differences in the concentration of Cd in soils within the CSUs, and good correlations with soil chemical variables such as Mg, ECEC, Zn, Ca, and SOM; it is necessary to continue studying other relationships and parameters associated with the soil composition, such as soil texture, clay minerals, mineral oxides/oxyhydroxides, properties that have shown affinity with Cd in soils according to different authors (Bravo & Braissant, 2022 ; Rezaei et al, 2021 ; Shaheen et al, 2013 ; Spark et al, 1995 ).…”

Section: Discussionmentioning

confidence: 99%

Assessing the cadmium content of cacao crops in Arauca, Colombia

Bravo,

Quiroga-Mateus,

López-Casallas

et al. 2024

Environ Monit Assess

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The district of Arauca is the second-largest producer of cacao in Colombia. However, despite its quality, it faces issues for export due to levels of cadmium (Cd) higher than the regulatory thresholds. A central question is how it may impact agricultural performance in the presence of Cd in cacao and chocolates. This study quantified Cd in cacao plantations from Arauca. Thus, 180 farms were assessed in the municipalities of Arauquita, Fortul, Saravena, and Tame. Five sample types (soil, irrigation channel sediment, soil litter, cacao seeds, and chocolates) were assessed for Cd. As a technological innovation, the new MXRF technology was used for Cd in chocolates. The sequence of Cd content was soil litter > chocolate > soils > cacao seeds > irrigation-channel sediment. A gradient north–south of Cd content in soil was observed, where highest content was found in farms near the Arauca River, and lower farther away. In irrigation channel sediment, Cd levels averaged 0.07 mg kg−1. The Cd content in cacao seeds was 0.78 mg kg−1 on average. Cd content in chocolates was above the threshold (1.10 mg kg−1 on average, including several cacao mass percentages). These artisanal chocolate bars produced by single farms were near the limit of Cd set by the European Union (up to 0.8 mg kg−1). Therefore, mixing beans from different farms could reduce their Cd content. The present study underscores the complexity of Cd distribution, emphasizing the importance of integrating soil, crop, and landscape features in managing and mitigating Cd levels in cacao.

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“…Regarding the influence of the pH of the solution, Umeh et al (2021) observed that the level of Cd2+ removal increases with increase in pH. Rezaei et al (2021) observed that soils with higher pH values showed greater Cd sorption capacity than acidic soils. Lin and Xu (2020) observed that sandy loam with high pH exhibited strong sorption for Cu.…”

Section: Sorption Isothermsmentioning

confidence: 99%

Sorption studies of Cd and Cu on Brazilian alluvial soils

Barros¹,

Coutinho²,

Alves³

et al. 2021

Rev. ambiente água

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The Local Production Arrangement, located in the Pernambuco’s Agreste state, has been significantly developing the region's economy. Despite its importance, industrial activity has caused relevant environmental concerns regarding the disposal of textile effluents, especially from industrial laundries. This waste is made up of many chemicals, and among them are various types of heavy metals. The evaluation of the sorption behavior of contaminant transport mechanisms such as heavy metals is essential to assess the risk of contamination of alluvial aquifers. This study evaluated the sorption of heavy metals (Cu and Cd) in an alluvial sediment deposit in the Capibaribe River. Kinetics and isotherm experiments allowed the analyses of Cu and Cd sorption. Kinetics sorption showed an equilibrium tendency after 16 h for Cu and 18 h for Cd and was better described by a pseudo-second order model. The isotherm data were adjusted to the Linear, Freundlich and Langmuir models. Both linear and Freundlich models satisfactorily described sorption isotherms for the two pollutants. The metals in the study represent a risk of contamination of the groundwater of alluvial aquifers, mainly due to physicochemical attributes of the soil, such as high sand content (85%), low MO (2.1 g kg-1) and alkaline pH (8.2). The environmental conditions decrease absorption and facilitate metal mobility, greatly increasing the environmental risks inherent in pollutant leaching. Cu showed a higher affinity with the soil studied in all assays performed compared with the results of the tests for Cd.

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Study of cadmium distribution coefficient in acidic and calcareous soils of Iran: Comparison between low and high concentrations

Cited by 9 publications

References 60 publications

A Review of the Distribution Coefficient (<i>K<sub>d</sub></i>) of Some Selected Heavy Metals over the Last Decade (2012-2021)

A Review of the Distribution Coefficient (<i>K<sub>d</sub></i>) of Some Selected Heavy Metals over the Last Decade (2012-2021)

Assessing the cadmium content of cacao crops in Arauca, Colombia

Sorption studies of Cd and Cu on Brazilian alluvial soils

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Study of cadmium distribution coefficient in acidic and calcareous soils of Iran: Comparison between low and high concentrations

Cited by 9 publications

References 60 publications

A Review of the Distribution Coefficient (&lt;i&gt;K&lt;sub&gt;d&lt;/sub&gt;&lt;/i&gt;) of Some Selected Heavy Metals over the Last Decade (2012-2021)

A Review of the Distribution Coefficient (&lt;i&gt;K&lt;sub&gt;d&lt;/sub&gt;&lt;/i&gt;) of Some Selected Heavy Metals over the Last Decade (2012-2021)

Assessing the cadmium content of cacao crops in Arauca, Colombia

Sorption studies of Cd and Cu on Brazilian alluvial soils

Contact Info

Product

Resources

About

A Review of the Distribution Coefficient (<i>K<sub>d</sub></i>) of Some Selected Heavy Metals over the Last Decade (2012-2021)

A Review of the Distribution Coefficient (<i>K<sub>d</sub></i>) of Some Selected Heavy Metals over the Last Decade (2012-2021)