Adsorption of a soil humic acid at the surface of goethite and its competitive interaction with phosphate

Antelo, Juan; Arce, F.; Avena, Marcelo Javier; Fiol, Sarah; López, R.; Macı́as, Felipe

doi:10.1016/j.geoderma.2006.10.011

Cited by 208 publications

(119 citation statements)

References 30 publications

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“…The above OC loading ($1.4 ± 0.2 mg OC/m 2 ) is between the maximum loading of oxide surfaces with purified FA, $0.6 mg OC/m 2 (Filius et al, 2000;Gu et al, 1996Gu et al, , 1994Zhou et al, 2001), and HA, $2.5 mg OC/m 2 (Antelo et al, 2007;Weng et al, 2007). This comparison shows that potentially a considerable part of the organic matter in the agricultural soils can be stored directly at the surface of the nano-oxide particles.…”

Section: Nom-loadingmentioning

confidence: 78%

Nanoparticles in natural systems I: The effective reactive surface area of the natural oxide fraction in field samples

Hiemstra

Antelo

Rahnemaie

et al. 2010

Geochimica et Cosmochimica Acta

146

185

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Section: Nom-loadingmentioning

confidence: 78%

Nanoparticles in natural systems I: The effective reactive surface area of the natural oxide fraction in field samples

Hiemstra

Antelo

Rahnemaie

et al. 2010

Geochimica et Cosmochimica Acta

146

185

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“…Among the mechanisms of action of HAs, some of them reduce P reaction with oxides, such as the blocking of adsorption sites (Kleber et al, 2015) and pores of the adsorbent (Kaiser & Guggenberger, 2003), exchange of binders (Fu et al, 2013) and increase of negative charge density (Antelo et al, 2007). On the other hand, HAs can increase phosphate adsorption (Fu et al, 2013), dissolving Fe oxides and complexing this anion combined with this cation (Gerke, 2010).…”

Section: Introductionmentioning

confidence: 99%

“…The effects of HAs on P content have also been evaluated in simple systems (solutions with Fe, HA and P oxides, without soil) (Antelo et al, 2007;Weng et al, 2012;Fu et al, 2013;Yan et al, 2016). Thus, there are uncertainties in relation to the effect of HAs addition on P availability, considering the conditions of application in soil and recommended doses of P. This study aimed to investigate the effect of HA application, combined with P doses, on the content of this nutrient in Latosol with and without acidity correction.…”

Section: Introductionmentioning

confidence: 99%

Modifications of phosphorus in Latosol as a function of humic acids and acidity

Beck

Escosteguy

Dick

2018

Rev. bras. eng. agríc. ambient.

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Palavras-chave:fosfato sorção substâncias húmicas A B S T R A C TThe effect of humic acids (HA) on phosphorus (P) availability is still contradictory; thus, it is necessary to identify the conditions that play a crucial role in this effect. The aim of this study was to investigate the effect of HA application, combined with doses of P, on the content of this nutrient in a Latosol with and without acidity correction. Two experiments were carried out, one with HA from peat and another with HA from mineral charcoal (leonardite). Doses of these acids (0; 1.12 and 5.62 mg C g -1 of soil) and P (26.2 and 104.7 mg P g -1 of soil, 1 and 4-fold higher than recommended, respectively) were tested at soil pH 4.5 and 7.0, in a three-factorial design. The soil was incubated for 20 days and the soil-P content was measured by Mehlich-1 and remaining-P tests. The effect of HAs on P availability varied with the P doses and soil acidity. Humic acids application increases P content in Latosol when P dose is higher than recommended and there is no acidity correction (pH 4.5). However, there is no effect of HAs application on soil-P content when applying the recommended amount of this nutrient, irrespective of the pH value.Modificações de fósforo em Latossolo em função de ácidos húmicos e acidez R E S U M O O efeito de ácidos húmicos (AH) na disponibilidade de fósforo (P) ainda é contraditório. Assim, é necessário identificar as principais condições que podem influenciar esse efeito. Com o trabalho, objetivou-se investigar o efeito da aplicação de AH, combinada com doses de P, no teor desse nutriente em Latossolo com e sem correção de acidez. Foram conduzidos dois experimentos, um com AH extraído de turfa e outro com AH extraído de carvão mineral (leonardita). Doses desses ácidos (0; 1,12 e 5,62 mg C g -1 de solo) e de P (26,2 e 104,7 mg P g -1 de solo, 1 e 4 vezes maior que o recomendado, respectivamente) foram testadas, em dois valores de pH do solo (4,5 e 7,0), em esquema trifatorial. O solo foi incubado por 20 dias e os teores de P foram extraídos com os métodos Mehlich-1 e P remanescente. O efeito dos AHs na disponibilidade desse nutriente variou com as doses de P e o pH do solo. A adição desses ácidos aumenta o teor desse nutriente em latossolo somente quando a dose de correção de P for maior que a recomendada e a acidez (pH 4,5) não for corrigida. Por outro lado, os AHs não influenciam o teor desse nutriente quando a dose de correção aplicada corresponder à quantidade recomendada, independentemente do pH do solo.

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“…It has been shown that thermal treatment of a mixture containing magnesium, calcium or iron (III) salts and silica gel gives a silica gel derivative, containing metal atoms strongly linked to the silica surface, which are able to bind HS [2]. Goethite (α-FeOOH), a crystalline monohydrate form of ferric oxide, can interact with the carboxylic and phenolic groups of HS by means of the surface metal ions, giving almost irreversible adducts [5]. For the clay vermiculite, HS adsorption by the raw material was found to be negligible, whereas it increased markedly when the clay was modified by intercalation with poly(hydroxyl iron) or by ion exchange with a quaternary ammonium ion, hexadecyltrimethylammonium [6].…”

Section: Introductionmentioning

confidence: 99%

Humic acid sorption properties of calcium-rich derivatives of Neapolitan Yellow Tuff

Coppola¹,

Iovino²,

Salvestrini³

et al. 2008

WIT Transactions on Ecology and the Environment

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With the objective of developing new agents for the removal of humic substances from water, the sorption properties of Ca-enriched Neapolitan Yellow Tuff (NYT), obtained by cation exchange at room temperature or by treatment with CaCl 2 at high temperature, were tested. Sorption of humic acids onto NYT samples was evaluated at neutral pH and room temperature by batch sorption tests and dynamic experiments on small columns. The salt-thermal treatment gives rise to samples with higher calcium content and superior sorption ability. For all the samples tested the sorption capacity increased with the contact time between the solid phase and the humic acids solution. The Langmuir parameters of the sorption isotherms and the breakthrough curves recorded by dynamic experiments indicate that high-temperature Ca-enriched NYT exhibits sorption properties higher than that recorded for commercial activated carbon and at least comparable to those of other materials recently investigated.

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Adsorption of a soil humic acid at the surface of goethite and its competitive interaction with phosphate

Cited by 208 publications

References 30 publications

Nanoparticles in natural systems I: The effective reactive surface area of the natural oxide fraction in field samples

Nanoparticles in natural systems I: The effective reactive surface area of the natural oxide fraction in field samples

Modifications of phosphorus in Latosol as a function of humic acids and acidity

Humic acid sorption properties of calcium-rich derivatives of Neapolitan Yellow Tuff

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