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Comparison Of Langmuir. Freundlich and Temkin Models to Describe Phosphate Sorption in the Soils
В наличии
Местонахождение: Алматы | Состояние экземпляра: новый |
Бумажная
версия
версия
Автор: Amos Ochiwu and A.O. Osunde
ISBN: 9783659961380
Год издания: 2016
Формат книги: 60×90/16 (145×215 мм)
Количество страниц: 92
Издательство: LAP LAMBERT Academic Publishing
Цена: 29185 тг
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Отрасли экономики:Код товара: 165020
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Аннотация: A laboratory experiment was conducted to evaluate the phosphate sorption potential of some representative soils of Southern Guinea savanna of Nigeria using the Langmuir, Freundlich and Temkin models. Soil samples (0 – 20 cm) of different Land use types were collected from five different locations exhibiting a wide range of physico-chemical characteristics. The soils were equilibrated for six days in a solution of 30 ml of 0.01M CaCl2 containing various amounts of P (0, 25, 50, 100, 200, 400, 800 and 1000µg L-1 P) as KH2PO4 at room temperature and thereafter the amount of phosphate sorbed was determined. Results obtained revealed that, phosphate sorption was positively correlated with pH, (0.925**), clay contents (0.823**), exchangeable acidity (0.802*) of the soils when phosphate was applied at the rate of 100 µg P mL-1. The sorption curves showed more or less similar pattern of changes. Langmuir model showed best fit to the sorption data at higher P concentrations followed by the Freundlich and Temkin. Phosphate sorption was highly correlated with pH, exchangeable acidity and clay content of the soil.
Ключевые слова: Langmuir, Sorption Maximum, Phosphate Sorption Capacity, Sorption Curves, Land use types, Freundlich and Temkin Equations