Determining Cadmium Activities and Predicting Solid- Phases Which Control Its solubility in the Soil irrigated with Sewage Water, in Egypt
Omer, R., el-gendi, S., El-Sayed, G. (2021). Determining Cadmium Activities and Predicting Solid- Phases Which Control Its solubility in the Soil irrigated with Sewage Water, in Egypt. EKB Journal Management System, 64(7), 3671-3679. doi: 10.21608/ejchem.2021.61677.3332
Rabab Omer; Samir el-gendi; Gamal El-Sayed. "Determining Cadmium Activities and Predicting Solid- Phases Which Control Its solubility in the Soil irrigated with Sewage Water, in Egypt". EKB Journal Management System, 64, 7, 2021, 3671-3679. doi: 10.21608/ejchem.2021.61677.3332
Omer, R., el-gendi, S., El-Sayed, G. (2021). 'Determining Cadmium Activities and Predicting Solid- Phases Which Control Its solubility in the Soil irrigated with Sewage Water, in Egypt', EKB Journal Management System, 64(7), pp. 3671-3679. doi: 10.21608/ejchem.2021.61677.3332
Omer, R., el-gendi, S., El-Sayed, G. Determining Cadmium Activities and Predicting Solid- Phases Which Control Its solubility in the Soil irrigated with Sewage Water, in Egypt. EKB Journal Management System, 2021; 64(7): 3671-3679. doi: 10.21608/ejchem.2021.61677.3332

Determining Cadmium Activities and Predicting Solid- Phases Which Control Its solubility in the Soil irrigated with Sewage Water, in Egypt

Egyptian Journal of Chemistry
Article 44, Volume 64, Issue 7, July 2021, Page 3671-3679  XML PDF (573.07 K)
Document Type: Original Article
DOI: 10.21608/ejchem.2021.61677.3332
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Authors
Rabab Omer email 1; Samir el-gendi1; Gamal El-Sayed2
1Soils, Water and Environmental Research Institute, Agricultural Research Center, Giza, Egypt
2Faculty of Science, Benha University, Benha, Egypt
Abstract
Abstract
The present study included determination of the active portion of Cadmium and predicting its possible solid phases which controlling its activities in sludge amended soils
The results showed that the measured Cd2+activities (using the competitive chelation method) increased with the prolonged use of sewage effluent water in irrigation. As shown from the Table (3) increased Cd2+activity by 9.94 folds than the control soil sample. Furthermore, the results were negatively correlated with pH values (r= 0.81).
Also, the present data clearly show that the tested remedial materials with the three rates of amending (1, 2, and 3% w/w) had great influences on the values of Cd activities. The obtained Cd activities were (4.65006E-09 and 6.89868E-09), (3.7353E-09 and 6.00091E-09), and (4.61439E-09 and 5.93551E-09) in C1, C2, and C3 Zero valent iron- and Rock phosphate amended soil, respectively.
Plotting the determined Cd activities of the tested soil samples on the constructed stability diagrams of the various cadmium minerals indicated that the obtained values of Cd using the competitive chelation method, were lie below the diagrams of the constructed Cd minerals, Suggesting that there are possibility of other minerals could controlling the solubility of Cd in sewage effluent irrigated soil at Egypt.
Keywords
Chemistry of cadmium activity; soil remediation; competition chelation method; Stability diagram
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