DISTRIBUTION AND TRANSPORT OF TRACE ELEMENTS AND SOME CATIONS AND ANIONS IN SOILS TREATED WITH VARIOUS AMENDMENTS
Mostafa Abdel-Aty Nasef;
Abstract
This study aimed at evaluting the influence of sewage sludge (as an organic amendment) and the commonly used gypsum (as an inorganic amendment) on distribution and transport of some trace elements (Fe, Mn, Cu and Zn) , cations (Ca, Mg, Na, and K) and anions in saline sodic soils throught period of continuous leaching of these soils.
To fulfill the purposes of this study, three surface soil samples differing in their contents of salts, exchangeable Na percentages (ESP), texture and cation exchange capacities were collected from three different localities .
A column experiment, was conducted. In this experiment, soil samples were mixed with either sewage sludge (at rates of3 %and 6%) or gypsum (CaS04.2H20) at rates of 100 % or 200% ofthe gypsum requirements. The soils were packed unifonnly in columns of PVC. A constant head of water was kept above the soil surface throughout the period of the experiment. Leachate was collected in 200m!fractions.• Period of collecting each leachate fraction was recorded. Also, soluble cations and anions as well as soluble (leached) trace elements (Fe, Mn, Cu, and Zn) of each leachate fraction were determined.
At and of leaching , each soil column was cut into 4 segments, each of them was analysed for total Ca, Mg, Na and K as well as total and available trace elements(Fe, Mn , Cu and Zn ).
A fractionation experiment was conducted to find out the distribution of Fe, Mn , Cu and Zn among the different soil components.
To fulfill the purposes of this study, three surface soil samples differing in their contents of salts, exchangeable Na percentages (ESP), texture and cation exchange capacities were collected from three different localities .
A column experiment, was conducted. In this experiment, soil samples were mixed with either sewage sludge (at rates of3 %and 6%) or gypsum (CaS04.2H20) at rates of 100 % or 200% ofthe gypsum requirements. The soils were packed unifonnly in columns of PVC. A constant head of water was kept above the soil surface throughout the period of the experiment. Leachate was collected in 200m!fractions.• Period of collecting each leachate fraction was recorded. Also, soluble cations and anions as well as soluble (leached) trace elements (Fe, Mn, Cu, and Zn) of each leachate fraction were determined.
At and of leaching , each soil column was cut into 4 segments, each of them was analysed for total Ca, Mg, Na and K as well as total and available trace elements(Fe, Mn , Cu and Zn ).
A fractionation experiment was conducted to find out the distribution of Fe, Mn , Cu and Zn among the different soil components.
Other data
| Title | DISTRIBUTION AND TRANSPORT OF TRACE ELEMENTS AND SOME CATIONS AND ANIONS IN SOILS TREATED WITH VARIOUS AMENDMENTS | Other Titles | توزيع وانتقال العناصر النادرة وبعض الكاتيونات والانيونات فى أراضى معاملة بمصلحات مختلفة | Authors | Mostafa Abdel-Aty Nasef | Issue Date | 2000 |
Recommend this item
Similar Items from Core Recommender Database
Items in Ain Shams Scholar are protected by copyright, with all rights reserved, unless otherwise indicated.