mostafa.redwan

Mostafa GamalEldeen Taha Redwan

Professor - Professor of Environmental Geology and Geochemistry at Sohag Faculty of Science-Geology Department

Faculty of science

Address: Sohag Faculty of Science, Geology dep., P.O. Box 82524, Sohag, Egypt

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2022 | Keywords Gold mine, tailings,
Geochemical and mineralogical characteristics of some Gold mine tailings in the Eastern Desert of Egypt
The adverse environmental effects of mine tailings disposal on the surrounding ecosystems are worldwide environmental problems. Due to environmental issues related to tailings discharged on land surface, detailed tailings characterization is a prerequisite for a long-term management solution. The tailings from four gold mines in Egypt, namely Fatira, El Sid, Barramiya, and Atud were investigated for their geochemical-mineralogical features and ... Read more

2022 | Keywords Environmental pollution,
Heavy metals pollution in Manzala Lake sediments, Egypt: variability, sources, and assessment
The environmental pollution of lake systems due to anthropogenic factors is of growing concern worldwide. Manzala Lake is the largest northern coastal-deltaic lakes of Egypt and has socioeconomic impacts. In this study, the concentrations and origins of seven heavy metals (HMs) and the organic content in the Manzala Lake sediments were explored during the winter and summer. The concentration of ... Read more

2022 | Keywords wastewater,
Environmental Impact of Wastewater Inflow on Groundwater Quality, West Girga, Sohag, Egypt
This research aims to determine the effects of wastewater irrigation on the groundwater quality west of Girga, Sohag, Egypt. Twenty-six groundwater and one sewage-treated effluent samples were analyzed using standard methods for a range of physio-chemical and microbiological parameters. Surrounding the wastewater plant, about 46% of collected samples were impacted by wastewater contamination, as indicated by positive detections of fecal ... Read more

2021 | Keywords Geomorphometric parameters,
Assessment of Flood Hazard West of Sohag Governorate, Egypt
Although Egypt has limited rainfall events, flashfloods are responsible for huge losses of lives and infrastructure. In this study, the geomorphometric parameters of the hydrographic basins in the area west of Sohag city, Upper Egypt was carried out. Stream orders, lengths and numbers, bifurcation ratio, drainage frequency and density, circularity and elongation ratios for 16 drainage basins in the study ... Read more

2021 | Keywords Mine wastes,
Secondary mineralogy around Um Gheig mine wastes, Eastern Desert, Egypt
Alteration of abandoned mine sites and wastes generates variable secondary mineral phases that incorporate different toxic trace elements with a prospective threat to the neighboring ecosystems. The main focus of this study was to investigate the mineralogical and geochemical changes at neutral pH where dry condition prevails around oxidation-primary contacts interface and the surface in Um Gheig Pb/Zn mine, Eastern ... Read more

Sources and health risk assessments of nitrate in groundwater, West of Tahta area, Sohag, Egypt
_Due to natural and anthropogenic human activities in arid and semi-arid regions, groundwater will continuously suffer from severe contaminations such as increases in nitrate levels. Groundwater contamination poses serious threats to the environment and human health. In the current study, 23 groundwater samples were collected from the desert zone around the wastewater treatment plant west of Tahta area, Sohag, Egypt. ... Read more

2020 | Keywords Pollution Load Index,
Assessment the Seasonal Variability and Enrichment of Toxic Trace Metals Pollution in Sediments of Damietta Branch, Nile River, Egypt
This work appraises the extent of toxic tracemetals and seasonal pollution degree in Damietta branch sediments of the River Nile of Egypt. The toxic trace metals Fe, Mn, Cd, Co, Cu, Ni, Pb, and Zn were analysed in sediments from six sites during the summer and winter seasons. The metal concentrations and organic matter were determined using inductively-coupled-plasma mass spectrometry ... Read more

2020 | Keywords Ain Sukhna industrial area, Eg,
Flood hazard assessment and characteristics of cement kiln dust in Ain Sukhna industrial area, north‐western part of the Gulf of Suez, Egypt
This study investigated the geochemical and mineralogical characteristics combined with heavy elements concentrations of Cement kiln dust (CKD) in Ain Sukhna industrial area, North-western part of the Gulf of Suez, Egypt and the influence of flash floods in its stability. Flooding severity is moderate with several water erosional processes. The CKD characterized by very poorly sorted/very fine-sands to silt. CaO ... Read more

Sources and behavior of trace elements in groundwater in the South Eastern Desert, Egypt
Due to water scarcity, the groundwater will represent an essential source of water in many communities worldwide. This study was carried out to investigate the main hydrogeochemical characteristic of trace elements composition, their sources, and its vulnerability in groundwater to the human population. Fifteen groundwater samples were collected from boreholes and hand dug wells from the South Eastern Desert, Egypt, ... Read more

Characterization and environmental impact assessment of gold mine tailings in arid regions: a case study of Barramiya gold mine area, Eastern Desert, Egypt.
Geochemical and mineralogical characterization and environmental impact assessment were performed on Barramiya gold mine tailings, Eastern Desert, Egypt. The Barramiya gold mine is situated within ophiolite decorated Nugrus suture zone, which composed of dismembered sequence of highly deformed and metamorphosed mafic to ultramafic rocks and their hydrothermal alteration products (carbonate rocks), interbedded with meta-volcano clastic rocks of the Nubian Shield. ... Read more