Adsorption of arsenate (HAsO42-) by the clay fraction of soils of the Keller and Barton Peninsulas, King George Island, Maritime Antarctic

Pôggere, Giovana Clarice; Melo, Vander Freitas; Francelino, Márcio Rocha; Simas, Felipe Nogueira Bello; Schaefer, Carlos Ernesto Gonçalves Reynaud

doi:10.5935/1806-6690.20170002

Cited by 3 publications

(2 citation statements)

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“…Similar results were found in the evaluation of MACAs using as adsorbent the clay fraction of different soils located in Antarctica (Poggere et al, 2017). These authors obtained a mean MACAs of 3554.0 mg kg -1 and they concluded that a soil mineralogical composition is more important than its clay content for MACAs evaluations since poorly-crystallized Fe and Al oxides are mainly responsible for As adsorption.…”

Section: Discussionsupporting

confidence: 73%

Arsenic in Soils: Natural Concentration and Adsorption by Oxisols Developed From Different Lithologies

Fontes¹,

Almeida²,

Dias³

et al. 2019

JAS

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Arsenic (As) is a toxic and a carcinogenic element naturally occurring in the environment. Therefore, studies on As natural concentration in soils and its adsorption process are important tools for the evaluation of potential risks of soil contamination in order to adoption of control actions or monitoring of potential As-contamination sources. The objective of this study was to evaluate the natural levels of As and determine the maximum adsorption capacity of As (MACAs) of six Oxisols (Latossolos) of Minas Gerais State, Brazil, developed from different lithologies. The soil sample’s total As content was determined using the USEPA 3051A method. The adsorption experiments were performed using different As concentrations, and the MACAs was measured by the Langmuir isotherm. On average, the natural As content in Oxisols was 13.13 mg kg-1, which is above the reference value of soil quality (RVQ) for As, in Brazil (8 mg kg-1). The levels of As in Oxisols originated from metamorphic/igneous rocks were significantly higher than those of Oxisols from sedimentary rocks. Globally, the evaluated soils showed a mean MACAs equal to 2,548 mg kg-1. Soil horizon Bw showed a higher MACAs than that of A horizon. In general, the levels of clay, iron oxides, iron forms (especially poorly-crystallized) and organic carbon had a positive influence on MACAs. Although the RVQ for As is well below the MACAs in all soils, the soil adsorbed As naturally present, rendering it unavailable in the soil aqueous phase. Therefore, there was no risk of contamination for human health.

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Section: Discussionsupporting

confidence: 73%

Arsenic in Soils: Natural Concentration and Adsorption by Oxisols Developed From Different Lithologies

Fontes¹,

Almeida²,

Dias³

et al. 2019

JAS

View full text Add to dashboard Cite

show abstract

“…Vários fatores podem ter contribuído para o aumento significativo da CTC do solo adubado com torta de filtro, como o teor de matéria orgânica, a quantidade de argila nesse material, além do tipo e da superfície específica dessa argila (Mesquita et al, 2020). Quanto maior essa superfície, maior será a sua CTC por aumentar a área de contato, melhorando a adsorção catiônica (Poggere et al, 2017). Tais resultados são importantes principalmente pelo fato da região em estudo apresentar solos arenosos, que geralmente têm baixa CTC e apresentam-se mais susceptíveis à perda de nutrientes por lixiviação.…”

Section: Resultsunclassified

Aplicação de Resíduos da Indústria Sucroalcooleira em Solo como Forma de Mitigar Impactos Ambientais

Lucena

Rolim

Dutra

et al. 2021

Rev. Bras. Geog. Fis.

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A adoção de práticas que minimize os impactos ambientais e melhoria da fertilidade do solo para exploração agrícola tem sido realizada com maior frequência. O presente trabalho teve como objetivo avaliar a qualidade do solo em áreas com diferentes doses de vinhaça e torta de filtro sobre os atributos químicos do solo. O experimento foi realizado na Estação Experimental do IPA, Vitória de Santo Antão - PE, constituído de dois tratamentos e cinco níveis de aplicação de doses de vinhaça 0;19,42; 77,68; 155,36 e 310,72 m3 ha-1) e cinco doses de torta de filtro (0; 2,75; 11,0; 22,0 e 44,0 t ha-1), em blocos casualizados com quatro repetições. Os dados obtidos foram submetidos à análise de variância e de regressão, utilizando o software SAS, com níveis de significância de 5% para o teste F. Com relação aos atributos químicos do solo tratados com torta de filtro foram verificados efeitos lineares significativos (p<0,05) para os teores de fósforo, cálcio e capacidade de troca de cátions (CTC) no solo. Relacionado a vinhaça foi verificado efeito quadrático significativo (p<0,05) proporcionando redução no teor de fósforo no solo, posteriormente, ocorrendo incremento de 8,88% com a dose máxima aplicada. Os resíduos aplicados torta de filtro e vinhaça promoveram melhoria nas propriedades químicas do solo potencializando seu uso na agricultura. Application of Waste from the Sugar Alcohol Industry in Soil as a Way to Mitigate Environmental Impacts A B S T R A C TThe adoption of practices that minimize environmental impacts and improve soil fertility for agricultural exploitation has been carried out with greater frequency. This work aimed to evaluate the soil quality in areas with different doses of vinasse and filter cake on the chemical attributes of the soil. The experiment was carried out at the IPA Experimental Station, Vitória de Santo Antão - PE, consisting of two treatments and five levels of application of vinasse doses 0; 19,42; 77.68; 155.36 and 310.72 m3 ha-1) and five doses of filter cake (0; 2.75; 11.0; 22.0 and 44.0 t ha-1), in randomized blocks with four replications. The data obtained were submitted to analysis of variance and regression, using the SAS software, with significance levels of 5% for the F test. Regarding the chemical attributes of the soil treated with filter cake, significant linear effects were verified (p < 0.05) for phosphorus, calcium and cation exchange capacity (CTC) in the soil. Related to vinasse, a significant quadratic effect (p <0.05) was observed, providing a reduction in the phosphorus content in the soil, subsequently, with an increase of 8.88% with the maximum applied dose. The residues applied filter cake and vinasse promoted an improvement in the chemical properties of the soil, enhancing its use in agriculture.Keywords: filter cake, vinasse, soil attributes, conditioners, fertility.

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Integrated assessment of the liquid and solid phases of lead-contaminated soils remediated with phosphate

et al. 2020

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Adsorption of arsenate (HAsO42-) by the clay fraction of soils of the Keller and Barton Peninsulas, King George Island, Maritime Antarctic

Cited by 3 publications

References 23 publications

Arsenic in Soils: Natural Concentration and Adsorption by Oxisols Developed From Different Lithologies

Arsenic in Soils: Natural Concentration and Adsorption by Oxisols Developed From Different Lithologies

Aplicação de Resíduos da Indústria Sucroalcooleira em Solo como Forma de Mitigar Impactos Ambientais

Integrated assessment of the liquid and solid phases of lead-contaminated soils remediated with phosphate

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