Effect of Saturating Cation, pH, and Aluminum and Iron Oxide on the Flocculation of Kaolinite and Montmorillonite

Goldberg, Sabine

doi:10.1346/ccmn.1987.0350308

Cited by 175 publications

(89 citation statements)

References 26 publications

(31 reference statements)

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“…Several authors (Igwe et al 1999;Lado et al 2004) found no positive correlations between SOM and aggregate stability. It means that SOM is the only factor responsible for aggregation processes and the mechanisms of the aggregate forming can be based on other principles, for example the bonding between mineral elements and sesquioxides, or on physical and chemical properties of clay minerals (Goldberg & Glaubig 1987;KÖgel-Knabner et al 2008). In the case of Cambisols, the highest contents of WSA ma could be due to the bond between SOM and mineral elements.…”

Section: Resultsmentioning

confidence: 99%

Stability of soil aggregates and their ability of carbon sequestration

Šimanský¹,

Bajčan²

2014

Soil & Water Res.

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AbstractŠimanský V., Bajčan D. (2014): Stability of soil aggregates and their ability of carbon sequestration. Soil & Water Res., 9: 111-118.One of the most important binding agents for forming stable aggregates is a soil organic matter (SOM), which can be retained in various size fractions of aggregates. If aggregates are water-resistant, they retain more carbon. Therefore, the aim of this study was to evaluate the stability of aggregates and their ability of carbon sequestration in different soil types and soil management systems in Slovakian vineyards. The highest content of water-stable macro-aggregates (WSA ma ) was determined in Cambisols, and the lowest in Fluvisols. The highest content of WSA ma (size fraction 0.5-3 mm) was determined in Chernozems, decreasing within the following sequence: Fluvisols > Leptosols > Cambisols > Luvisols. The soil type had a statistically significant influence on the re-distribution of soil organic matter in size fractions of water-stable aggregates. The highest content of SOM in water-stable aggregates of the vineyards was determined in grassy strips in-between the vineyard rows in comparison to intensively cultivated rows of vineyard. The highest values of carbon sequestration capacity (CSC) in WSA ma were found in Cambisols > Leptosols and the lowest values of CSC were in Fluvisols. The microaggregates represented a significant carbon reservoir for the intensively cultivated soils (rows of vineyard). On the other hand, increasing of macro-aggregates (size fraction 0.5-3 mm) was characteristic for grassland soils (between the rows of vineyard).

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Section: Resultsmentioning

confidence: 99%

Stability of soil aggregates and their ability of carbon sequestration

Šimanský¹,

Bajčan²

2014

Soil & Water Res.

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“…To analyze factors which influence the dispersion and flocculation behavior of soil particles, many studies have so far been conducted. The factors considered to be important include organic matter (Visser and Caillier 1988;Piccolo and Mbagwu 1989), free oxides (Oades 1984;Goldberg 1989), electric charge of clays (Pilipovich et al 1958;Black and Sidney 1961), clay mineralogy (VelascoMolina et al 1971), exchangeable cation composition (Chiet al 1977;Emerson and Chi 1977), electrolyte concentration (Quirk and Schofield 1955), soil pH (Goldberg and Glaubig 1987), particle size distribution (Rengasamy et al 1984) and so on. However, since the characteristics of the soil samples investigated in these studies were different from place to place, care must be taken in the interpretation of the role of the factors.…”

Section: Discussionmentioning

confidence: 99%

Dispersion behavior of soils from reclaimed lands with poor soil physical properties and their characteristics with special reference to clay mineralogy

Itami

Kyuma

1995

Soil Science and Plant Nutrition

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“…In addition, because pH affects soil charge, it strongly influences the dispersion-flocculation of soils. Flocculation occurred near the point of zero charge; the aluminum (Al) oxide was flocculated at pH > 9.5 and the iron oxide was flocculated between pH 6.0 and 8.2 (Goldberg and Glaubig 1987). The soil dispersed well and the permeability decreased well at pH 9 more than those at pH 6 for the montmorillonitic and the kaolinitic soil (Suarez et al 1984).…”

Section: Introductionmentioning

confidence: 99%

Influence of phosphate sorption on dispersion of a Ferralsol

Pham

Ishiguro

Tran

et al. 2014

Soil Science and Plant Nutrition

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Soil dispersion induces soil erosion and colloidal leaching. Nutrients are lost at the same time and this causes water contamination. Phosphate is an essential element for living organisms. Because phosphate influences soil dispersion and it is an important limited resource, this influence must be evaluated well in order to diminish negative effects on soil structure. In this paper, we firstly evaluated the influence of phosphate sorption on soil dispersion by calculating repulsive potential energy between soil particles. Ferralsol, which is a typical soil in rainy tropical regions, was used as the material. The dispersion-flocculation phenomena were investigated with absorbance of soil suspension under different pH, phosphate adsorption and electrolyte concentration in an Na-NO 3 -PO 4 system. The repulsive potential energy was calculated based on the diffuse double layer theory and the measured zeta potential. We indicated that the measured absorbance increased with the increase of the repulsive potential energy. The repulsive potential energy increased with increasing phosphate sorption up to about 5 to 20 mmol kg −1 at all pH, and it induced the soil dispersion, because phosphate sorption increased the negative charge of the soil. After its peak, it decreased with increasing phosphate sorption because the electrolyte concentration increased and the electrolyte screened the electric field near the soil surface. The repulsive potential energy also increased with increasing pH because of the increase of the negative charge of the soil. Even at low pH, after a certain amount of phosphate sorption, the soil dispersed due to the increase of repulsive potential energy, although the soil flocculated before phosphate application. Because the soil dispersion causes soil and phosphorus loss, the influence of soil pH and phosphate sorption on the soil dispersion should be considered for good soil management.

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Effect of Saturating Cation, pH, and Aluminum and Iron Oxide on the Flocculation of Kaolinite and Montmorillonite

Cited by 175 publications

References 26 publications

Stability of soil aggregates and their ability of carbon sequestration

Stability of soil aggregates and their ability of carbon sequestration

Dispersion behavior of soils from reclaimed lands with poor soil physical properties and their characteristics with special reference to clay mineralogy

Influence of phosphate sorption on dispersion of a Ferralsol

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