Retention of Boron by Agricultural Soils From Ontario

Evans, L. J.

doi:10.4141/cjss87-003

Cited by 36 publications

(25 citation statements)

References 5 publications

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“…Parks and White (1952) showed that B adsorption was significantly affected by humus extracted from soil. The positive correlation between adsorbed B and organic carbon content was also reported by other researchers (Elrashidi and O'Connor 1982;Evans 1987). Yermiyaho et al (1988) found that ability of SOM for complex formation with B was more than mineral soil components at the same weight.…”

Section: Surface Complexation Modelsupporting

confidence: 67%

“…The comparison of R 2 values obtained from two equations indicated that B adsorption in our soil samples followed a nonlinear pattern, and the fit of nonlinear Freundlich equation to experimental data was better than simple linear equation. The empirical description of B adsorption on aluminum oxide (Choi and Chen 1979), clay minerals (Jasmund and Lindner 1973), calcite (Goldberg and Forster 1991), and soils (Elrashidi and O'Connor 1982;Evans 1987;Goldberg and Forster 1991;Wen-Ting et al 2009) has been previously investigated using Freundlich equation. Arona and Chahal (2010) studied the effects of soil properties on B adsorption by arid and semiarid benchmark soils, and they reported that B adsorption data fitted successfully with Langmuir and Freundlich equations.…”

Section: Adsorption Isothermsmentioning

confidence: 99%

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Surface complexation model of boron adsorption by calcareous soils

Ranjbar

Jalali

2014

Int. J. Environ. Sci. Technol.

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This study aimed to evaluate boron (B) adsorption and the capacity of a surface complexation model for simulating this process in calcareous soils. Ten surface soils were collected from different land use areas in Hamedan, Western Iran, to characterize B sorption by soils. The mean B adsorbed by the sample soils varied from 8.9 to 32.8 %. Two empirical models including linear and Freundlich equations fitted well to the experimental data. The linear distribution (K d ) values varied from 1.32 to 6.86 L kg -1 , while the parameters of Freundlich equation including n and K Fr ranged from 1.16 to 1.33 and 3.31-16.81, respectively. The comparison of two empirical models indicated that B adsorption followed a nonlinear pattern. The soil organic matter had positive correlations with Freundlich and linear distribution coefficients. However, empirical models were not suitable for explaining the mechanism of B adsorption, so a surface complexation model was used to simulate and predict the B adsorption process. B adsorption modeling was conducted using Visual MINTEQ and PHREEQC, based on the assemblage of major surface components (hydrous ferric oxides, aluminum hydroxides, calcium carbonate, and humic acids). B adsorption was successfully modeled by surface complexation. The significant contribution of organic matter to B complexes was resulted from both experimental data and mechanistic modeling.

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Section: Surface Complexation Modelsupporting

confidence: 67%

Section: Adsorption Isothermsmentioning

confidence: 99%

Surface complexation model of boron adsorption by calcareous soils

Ranjbar

Jalali

2014

Int. J. Environ. Sci. Technol.

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“…Nessa faixa, há um aumento da concentração de B(OH) 4 -, que possui maior afinidade com os óxidos de Fe e Al (Goldberg & Glaubig, 1985) e matéria orgânica (Yermiyahu et al, 1995). Segundo Evans (1987), a adsorção de B pelos óxidos e pela matéria orgânica é efetivamente relevante em pH na faixa alcalina, atingindo a máxima adsorção a pH 9,0.…”

Section: Resultsunclassified

Adsorção de boro em solos de várzea do Sul de Minas Gerais

Azevedo

Faquin

Fernandes

2001

Pesq. agropec. bras.

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O objetivo deste trabalho foi avaliar a adsorção de B em quatro solos de várzea da região de Lavras, MG, por meio dos parâmetros das isotermas de Langmuir e Freundlich, no período de outubro a novembro de 1998. Amostraram-se solos Aluvial, Glei Pouco Húmico, Glei Húmico, e Orgânico artificialmente drenado, coletados na camada de 0-20 cm e peneirados para 2 mm. Amostras com e sem calagem foram incubadas durante 30 dias. Duplicatas de 4,0 g de solo de cada classe foram acondicionadas em tubos de polietileno com oito diferentes doses de B (0, 2, 4, 8, 12, 16, 24 e 32 mig mL-1) preparadas em CaCl2.2H2O 0,01 mol L-1, com ácido bórico como fonte. Os teores de B na solução de equilíbrio foram determinados pelo método da Azometina-H. Os resultados mostraram que alto teor de matéria orgânica confere ao solo Glei Húmico maior capacidade de adsorver boro. A matéria orgânica, a superfície específica, caulinita e alumínio trocável foram os atributos dos solos que se correlacionaram diretamente com a capacidade máxima de adsorção de B (CMAB). A calagem proporcionou diminuição da CMAB em todos os solos.

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“…Boron adsorption by soils increased when the pH rose from 3 to 9 (Bingham et al, 1971;Mezuman & Keren, 1981;Keren & Bingham, 1985;Barrow, 1989), and it decreased when the pH was increased further in the range 10 to 11.5 (Goldberg & Glaubig, 1986). In several studies, highest levels of B adsorption by soil depicted close correlation with the pH of the soil solution (Okazaki & Chao, 1968;Evans, 1987;Shafiq et al, 2008).…”

Section: Soil Reaction (Ph)mentioning

confidence: 99%