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- Title
The precipitation of fluoride, calcium and magnesium minerals from Egyptian Mediterranean Sea coast in relation to discharged waters.
- Authors
El-Said, Ghada F.; Shaltout, Nayrah A.; Moneer, Abeer A.; El-Sadaawy, Manal M.; Morsy, Amal M.H.
- Abstract
The present study focuses on the effect of discharged wastes on the precipitation of some minerals (calcite, aragonite, dolomite, fluorite and sellaïte) as well as the chemical composition of seawater water columns along the eastern Egyptian Mediterranean Sea coast. This coast is subjected to different discharge waters containing agricultural, industrial, sewage and domestic wastes coming from the Nile River, the North Lakes as well as other different outlets. Variable levels of physicochemical parameters including temperature (T; 15.34–23.12°C), salinity (38.50–40.33%), pH (8.05–8.31), bicarbonate (HCO3; 63.73–147.22 mg/l), carbonate (CO3; 10.01–23.34 mg/l), calcium (Ca; 263.68–791.05 mg/l), magnesium (Mg; 799.67–2452.32 mg/l) and fluoride (F; 0.56–4.76 mg/l) were measured. Amongst the mineral production values that were calculated by saturation index (SI), fluorite and sellaïte calculations almost showed values <1, especially in the Rosetta and Damietta sectors which are affected by the Nile River. Marine organisms were influenced by the change in the physicochemical parameters along the investigated coastal area and showed aragonite and high-Mg calcite formation. Obviously, the statistical analyses of correlation matrix, ANOVA: two-factor without replication and stepwise regression of the present data explored the effect of the discharged effluents on the minerals formation and the chemical composition of seawater along the studied area. Additionally, the results showed the possible public health hazard from marine organism’s ingestion and seawater contact along the polluted areas. Accordingly, it seems advisable to reduce the pollution by discharged wastes into the Egyptian coastal ecosystems.
- Subjects
PRECIPITATION (Chemistry); FLUORIDES; CALCIUM; MAGNESIUM; SEAWATER composition
- Publication
Desalination & Water Treatment, 2016, Vol 57, Issue 5, p2113
- ISSN
1944-3994
- Publication type
Article
- DOI
10.1080/19443994.2014.979243