Phosphate adsorption by clays from Brazilian Oxisols: relationships with specific surface area and mineralogy
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چکیده
منابع مشابه
Iron Oxide-clay Mineral Association in Brazilian Oxisols: a Magnetic Separation Study
-Selected Brazilian Oxisols were sampled and submitted to high-gradient magnetic separation (HGMS) to study the iron oxide-clay mineral associations. The soils, derived from four different parent materials, have mineralogy dominated mostly by hematite, goethite, and kaolinite. Gibbsite appears in most soil samples. The high-gradient magnetic separation showed good separation for some soils, as ...
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-The specific surface area, S, of a clay is commonly measured by the adsorption of ethylene glycol monoethyl ether (EGME); however, this method can be tedious and time consuming, especially if the clay is saturated with a monovalent, highly hydrated cation. An alternative method for measuring S was developed involving infrared internal reflectance spectroscopy. This method is based on the disco...
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Use of water treatment plant residuals (WTR), as a soil amendment is a promising alternative to landfill disposal. Unfortunately, WTR has a propensity to bind with phosphate, which is an important plant nutrient. Phosphate may be added to WTR prior to soil application. This type of pretreatment may convert WTR from a phosphate consumer to a phosphate supplier. The binding of phosphate to WTR is...
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ژورنال
عنوان ژورنال: Geoderma
سال: 1996
ISSN: 0016-7061
DOI: 10.1016/0016-7061(96)00010-9