Sorption studies of Cd and Cu on Brazilian alluvial soils

Barros, Vitor Hugo de Oliveira; Coutinho, Artur Paiva; Alves, Adriana Thays Araújo; Neto, Severino Martins dos Santos; Assis, Fernando Xavier de; Lima, Valmir Félix de; Lima, José Romualdo de Sousa; Antonino, Antônio Celso Dantas

doi:10.4136/ambi-agua.2717

Cited by 2 publications

(1 citation statement)

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“…In addition, feldspars and ferromagnesian minerals rapidly decompose in semiarid regions, whereas the concentration of iron and aluminum oxides remains stable [32]. The sorption of heavy metals in soils from the Brazilian semiarid region was analyzed by researchers such as Chaves and Tit [33], Vasconcelos et al [34], Meneguin et al [35], Araujo et al [36], and Barros et al [37].…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Heavy Metals on Bentonitic Soil for Use in Landfill Liners

Silva

Boscov²,

Costa

et al. 2023

Adsorption Science & Technology

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Hazardous heavy metal ions such as copper, zinc, nickel, chromium, cadmium, and lead engender a potential risk to human health. Among the processes involved in the retention of these contaminants, adsorption is advantageous for removing toxic metals because of its environmentally friendly aspect, efficiency, and low-cost operation. Information on the adsorption of heavy metals in soils from the semiarid region of northeastern Brazil is still scarce. In this study, the adsorption of heavy metals (Cd, Cu, Zn, Ni, and Pb) by a semiarid Brazilian bentonitic soil is investigated. This soil has been used as a bottom liner in an experimental municipal solid waste (MSW) cell located in Campina Grande, State of Paraíba, Brazil. The experimental cell consists of a landfill unit on an experimental scale, with the same constructive elements of a sanitary landfill. Disturbed and undisturbed samples of the investigated soil were collected at a quarry in the rural zone of Boa Vista (state of Paraiba, Northeast Brazil). Sorption attributes were determined via batch tests with a soil-solution ratio of 1 : 12.5 (4 g of dry soil to 50 mL of solution). Linear, Freundlich, and Langmuir isotherms were fitted to the experimental data, using as fitting parameters Pearson correlation coefficient ( R 2 ) and p value with a significance level α = 5 % . The ascending order of maximum adsorption capacity for heavy metals followed the series Ni < Cr < Zn < Cd < Cu < Pb. The maximum adsorbent capacities obtained were similar to those of other Brazilian soils and other adsorbents. Therefore, the studied soil has a high potential to be used in the retention of heavy metals.

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Section: Introductionmentioning

confidence: 99%

Adsorption of Heavy Metals on Bentonitic Soil for Use in Landfill Liners

Silva

Boscov²,

Costa

et al. 2023

Adsorption Science & Technology

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A Review of the Distribution Coefficient (<i>K<sub>d</sub></i>) 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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Sorption studies of Cd and Cu on Brazilian alluvial soils

Cited by 2 publications

References 50 publications

Adsorption of Heavy Metals on Bentonitic Soil for Use in Landfill Liners

Adsorption of Heavy Metals on Bentonitic Soil for Use in Landfill Liners

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

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Sorption studies of Cd and Cu on Brazilian alluvial soils

Cited by 2 publications

References 50 publications

Adsorption of Heavy Metals on Bentonitic Soil for Use in Landfill Liners

Adsorption of Heavy Metals on Bentonitic Soil for Use in Landfill Liners

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)

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