scholarly journals The effect of human activities on the pollution of water in southwest Giza area, Egypt

2017 ◽  
Vol 17 (5) ◽  
pp. 1368-1376 ◽  
Author(s):  
Elsayed M. Abu El Ella ◽  
Ahmed A. Elnazer ◽  
Salman A. Salman
Keyword(s):  
Heavy Metals ◽  
Surface Water ◽  
Water Resources ◽  
Major Ions ◽  
Drinking And Irrigation ◽  
Groundwater Samples ◽  
Industrial Complexes ◽  
And Migration ◽  
Surface Water Samples

Southwest Giza area is one of the most complicated regions in Egypt because of the combination of agricultural, industrial and urbanization activities with few studies about water resources contamination with heavy metals. In this study, ten surface water samples and eight groundwater samples were collected and analyzed for pollution with Fe, Mn, As, Cr, Cd, Pb and Cu. The samples were collected randomly according to the topographic locations and accessibility. The surface water is suitable for both drinking and irrigation use according to its salinity (total dissolved solids, TDS < 500 mg/l) and content of major ions. Unfortunately, some samples contain concentrations of As, Cd, Cu and Pb higher than the WHO drinking water guidelines. The groundwater samples have TDS ranging from 204 to 2,100 mg/l. Also, the groundwater contains higher concentrations of Fe, Mn and As than surface water. The highest concentrations of heavy metals As, Cd and Pb were recorded in the desert fringes and close to the industrial complexes indicating the role of geological sediments in the transportation and migration of pollutants. The unconfined part of the Quaternary aquifer in the desert fringes is more vulnerable to contamination. The results of this study reflect the role of human and industrial activates in polluting water resources with heavy metals, which puts the aquatic environment in the study area under stress.

scholarly journals GIS-based assessment of groundwater quality and suitability for drinking and irrigation purposes in the outlet and central parts of Wadi El-Assiuti, Assiut Governorate, Egypt

2020 ◽  
Vol 44 (1) ◽  
Author(s):  
Hanaa A. Megahed
Keyword(s):  
Heavy Metals ◽  
Trace Elements ◽  
Major Ions ◽  
Anthropogenic Activities ◽  
Groundwater Resources ◽  
Integrated Approach ◽  
World Health ◽  
Arid Environments ◽  
Drinking And Irrigation ◽  
Groundwater Samples

Abstract Background The limited water resources in arid environments in addition to the effect of agricultural and anthropogenic activities on groundwater quantity and quality necessitate paying more attention to the quality assessment of these resources. The present studies assess the quality of groundwater resources in Wadi El-Assiuti, south Egypt, and evaluate their suitability for drinking and irrigation purposes. To achieve this goal, 159 groundwater samples were collected from the outlet and central parts of the Wadi El-Assiuti during the autumn season (October–November) of 2019 and were analyzed for major ions, trace elements and heavy metals. Results The results indicate that the TDS values range between 1972 and 6217 ppm, while the concentration of trace elements (Fe++, Mn++ and Ni+) ranges between 0.05 and 0.46, 0.11 and 0.221 and 0.01 and 0.6 ppm, respectively. These results show that all groundwater samples are clearly unacceptable and inappropriate for human drinking due to their high content of total dissolved solids, trace elements and heavy metals, particularly in the majority of samples according to World Health Organization (WHO) guidelines and the Egyptian standards (Eg. St. 2007) for drinking water quality. Spatial analysis of the TDS values in geographic information system environment indicates that the salinity is higher in the northeast and gradually decreases southward. Sodium adsorption ratio, US Salinity Laboratory classification (1954), residual sodium carbonate, soluble sodium percentage and permeability index show that most groundwater samples are suitable for irrigation purposes. Conclusions The integrated approach provided in this study highlights the spatially distributed suitability of groundwater resources in Wadi El-Assiuti and can be applied in similar basins worldwide.

scholarly journals Geo-Temporal Signatures of Physicochemical and Heavy Metals Pollution in Groundwater of Khulais Region—Makkah Province, Saudi Arabia

2022 ◽  
Vol 9 ◽  
Author(s):  
Mohd Yawar Ali Khan ◽  
Mohamed El Kashouty ◽  
Waleed Gusti ◽  
Amit Kumar ◽  
Ali Mohammad Subyani ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Seawater Intrusion ◽  
Major Ions ◽  
Total Dissolved Solids ◽  
Sodium Absorption ◽  
Sodium Absorption Ratio ◽  
Drinking And Irrigation ◽  
Groundwater Samples ◽  
Heavy Metals Pollution ◽  
High Concentrations

Seawater has intruded into many of Saudi Arabia’s Red Sea coastal aquifers, with varying degrees of extension depending on location, hydrogeology, and population density. This study aimed to evaluate and comprehend the processes that influence the hydrogeochemical characteristics of the coastal aquifer in Saudi Arabia’s Khulais region. Groundwater samples were taken from nineteen locations during the winter and summer of 2021, and data from major ions and trace elements were examined and interpreted using ArcGIS software. The total dissolved solids (TDS) concentrations ranged between 480 and 15,236 mg/L and 887–18,620 mg/L in winter and summer, respectively. Groundwater TDS concentration was observed to be influenced by groundwater flow, lithogenic, anthropogenic, and seawater intrusion in this study (2021) when compared to 2016. The concentration of nitrate (NO3−) and strontium (Sr) in most samples exceeds the drinking guidelines. The occurrence of high concentrations of bromide (Br), Fluoride (F), Iron (Fe) (winter and summer) and Aluminum (Al), Boron (B), Chromium (Cr), Nickel (Ni), lead (Pb), cadmium (Cd), cobalt (Co), copper (Cu) and manganese (Mn) (winter) was also exhibited and observed up to more than drinking and irrigation limits. The central part of the study area was affected by seawater intrusion. The hydraulic conductivity of the topsoil was measured, and it ranged from 0.24 to 29.3 m/day. Based on electrical conductivity (EC) and sodium absorption ratio, most aquifer samples were unsuitable for irrigation (SAR).

scholarly journals HYDROCHEMICAL CHARACTERISTICS AND WATER QUALITY ASSESSMENT IN ABU-ZAABAL AREA, EASTERN NILE DELTA, EGYPT

2021 ◽  
pp. 221-231
Author(s):  
RAGAA EL-SHEIKH ◽  
IBRAHIM HEGAZY ◽  
EHAB ZAGHLOOL ◽  
MOHAMED E. A. ALI ◽  
AYMAN A. GOUDA
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Water Resources ◽  
Water Samples ◽  
Nile Delta ◽  
Hard Water ◽  
Water Quality Assessment ◽  
Chemical Compositions ◽  
Groundwater Samples ◽  
Surface Water Samples

Objective: The study presents simple tools for water resources quality classification based on its chemical compositions in Abu Zaabal area, eastern Nile Delta, Egypt and assess the water quality for different uses. Methods: 31 water samples were collected from different water resources in the study area and analyzed for physicochemical parameters. Hydrochemical relations, contour maps and statistical methods were used to estimate the contamination indices and evaluate the water resources for different purposes. Results: 83.3% of groundwater samples is fresh water and 16.7% are brackish water. 85.7% of surface water samples are fresh and 14.3% is saline. 92% of groundwater samples and 71.5% of surface water samples are very hard water. According to HPI values, 8% of the quaternary groundwater samples are good, 4% are poor, 4% are very poor and 84% of the samples are unsuitable. All groundwater samples and 71% of surface water samples are contaminated with respect to ammonia. Conclusion: Higher concentrations of TDS and heavy metal may be due to the clay nature of the soil, the marine sediments in the aquifer matrix together with the dissolution and leaching of minerals from agricultural, anthropogenic and industrial activities. The groundwater in the polluted zones is considered unsuitable for human drinking.

Heavy metals in coal mine groundwater responding to mining activity: concentration, temporal variation and speciation

2015 ◽  
Vol 10 (2) ◽  
pp. 390-401 ◽  
Author(s):  
He-rong Gui ◽  
Man-li Lin ◽  
Wei-hua Peng
Keyword(s):  
Heavy Metals ◽  
Temporal Variation ◽  
Coal Mine ◽  
Dominant Species ◽  
Major Ions ◽  
Mining Activity ◽  
Atmospheric Environment ◽  
Limestone Aquifer ◽  
Groundwater Samples ◽  
Representative Samples

Six groundwater samples were collected from four aquifers in Renlou coal mine, northern Anhui Province, China, and concentration, temporal variation and speciation of five heavy metals (Cr, Cu, Ni, Pb and Zn) were analyzed. The results of physicochemical parameters and major ions showed that the selected groundwater were representative samples of Quaternary aquifer (QA), coal measure aquifer (CA), Taiyuan limestone aquifer (TA) and Ordovician limestone aquifer (OA). Cr, Ni and Zn increased in the four aquifers from 2002 to 2014, but Pb decreased from 2006 to 2014. Cu concentration increased in QA and TA, but decreased in CA and OA. Although all monitoring results met the standards recommended by WHO and GB5749-2006, Cr and Cu in some groundwater samples exceeded GB/T 14848-93, especially in CA. Soluble metallic hydroxides were the dominant species of heavy metals in QA, while free ions were the main species in TA and OA. Excepted Ni2+ and Zn2+, CuCO3(aq) and PbCO3(aq) were the dominant species of Cu and Pb in CA, respectively, indicating more CO2 had been flooded and dissolved in groundwater from ground atmospheric environment. The enhanced concentration and special dominant species of heavy metals revealed that the ‘closed’ characteristics of CA in Renlou coal mine might have been broken due to coal mining activity.

scholarly journals Hydrochemical assessment and groundwater pollution parameters in arid zone: Case of the Turonian aquifer in Béchar region, southwestern Algeria

2018 ◽  
Vol 39 (1) ◽  
pp. 109-117
Author(s):  
Ikram Mokeddem ◽  
Meriem Belhachemi ◽  
Touhami Merzougui ◽  
Noria Nabbou ◽  
Salih Lachache
Keyword(s):  
Irrigation Water ◽  
Major Ions ◽  
Arid Zone ◽  
Water Source ◽  
Anthropogenic Sources ◽  
Anthropogenic Source ◽  
Water Sampling ◽  
Drinking And Irrigation ◽  
Groundwater Samples ◽  
High Concentrations

AbstractGroundwater samples from Turonian aquifer of Béchar region were evaluated as drinking and irrigation water sources. physicochemical parameters including pH, EC, TH, Na+, Ca2+, Mg2+, Cl−, SO42– and NO3− were determined for 16 water sampling points. These characterizations show that the groundwater is fresh to brackish, slightly alkaline and the major ions are Na+, Ca2+, Mg2+, Cl− and SO42–. According to WHO standards, 50% of the analysed water are suitable as a drinking source while the other samples are not in compliance with drinking water standards. This non-compliance is basically due to the high concentrations of Na+, Cl−, and SO42– requesting further treatment to reach the stringent standards. According to the results of nitrate concentrations, anthropogenic source seems to influence the groundwater quality. The present study shows that Béchar groundwater may represent an important drinking and irrigation water source. However, a specific management strategy should be adapted in order to avoid the contamination by anthropogenic sources.

scholarly journals Remediation of Boating and Jetty Pollutants from the Okavango Delta Surface Water Employing Valorized Tilapia ruweti Waste Material

2020 ◽  
pp. 1-12
Author(s):  
Irene W. Maina ◽  
Morlu G. F. Stevens ◽  
Bareki S. Batlokwa
Keyword(s):  
Heavy Metals ◽  
Surface Water ◽  
Water Samples ◽  
Contact Time ◽  
Ion Concentration ◽  
Okavango Delta ◽  
Waste Materials ◽  
Adsorption Parameters ◽  
Solution Ph ◽  
Surface Water Samples

Aims: To employ valorized waste materials from Tilapia ruweti scales for removal of heavy metals from areas with major boating activities and high numbers of jetties at the Okavango delta, Botswana. Study Design: Biowaste materials were Identified, valorized and then optimized for adsorption and removal of boating and jetty pollutants from profiled Okavango Delta surface water samples. Place and Duration of Study: Okavango Delta, Maun and Botswana International University of Science and Technology, Palapye, Botswana between March 2017 and September 2018. Methodology: Tilapia ruweti scales were collected from Sehithwa, Maun while water samples were collected from areas with jetties and major boating activities at Shakawe, Mboma Island and Xakanaxa. The concentration of Zn, Cu, Ni, Co, Pb and Cd at all the sampling sites were accurately determined using micro-plasma atomic emission spectroscopy (MPAES). The fish scales were pulverized and valorized by subjecting them to 12.7% vinegar. Minitab 14 software was used as a modeling tool to provide multivariate optimized parameters that affect sorption studies that included initial ion concentration, sorbent dose, contact time and solution pH. The valorized waste materials were then utilized for removal of the selected heavy metals. Results: The optimized adsorption parameters that included contact time, solution pH, sorbent dose and initial ion concentration were ≤ 88.63 min, ≤ 8.75, ≤ 84.29 mg and ≤ 28.44 mg/L respectively. The valorized Tilapia ruweti waste displayed high removal efficiencies toward removing the selected ions from the Okavango Delta surface water samples up to 94.21% with %RSD < 2 for n = 3 (triplicate). Conclusion: The valorized Tilapia ruweti scales were recommended as a cheap, simple and an effective method for remediation of boating pollution at the Okavango delta and other recreational areas.

scholarly journals Assessment of Heavy Metals Pollution and Stable Isotopic Signatures in Hard Rock Aquifers of Krishnagiri District, South India

Geosciences ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 200 ◽  
Author(s):  
S. Manikandan ◽  
S. Chidambaram ◽  
M. V. Prasanna ◽  
Rakesh Roshan Ganayat
Keyword(s):  
Heavy Metals ◽  
Hard Rock ◽  
Major Ions ◽  
Pollution Index ◽  
Pollution Indices ◽  
Degree Of Contamination ◽  
Isotopic Signatures ◽  
Groundwater Samples ◽  
Metal Levels ◽  
Hard Rock Aquifers

The area chosen for study, Krishnagiri district, has a hard rock terrain and the aquifers located there are sparsely recharged by limited rainfall. The study area has a complex geology with hard rock aquifers. To have an overall view of the trace metals concentration in the groundwater of the study area, 39 groundwater samples were collected during Post Monsoon (POM) representing various lithologies. pH, EC, TDS, major ions and 22 heavy metals were analyzed for all the samples. Ca-Cl is the dominant water facies in the groundwater, which indicates the dissolution of ions by local precipitation. The analysis shows the dominance of trace metal levels in groundwater as follows: Zn > Ba > Sr > Fe > Al > B > Mn > Cu > Pb > Ni > V > Li > Rb > Cr > Mo > Se > As > Co > Cd > Ag > Sb > Be. The pollution indices, namely the heavy metal pollution index (HPI) and degree of contamination (Cd) were calculated to assess the drinking and agriculture water usage. The pollution indices show that 2% of samples are polluted with respect to HPI and 3% with respect to the degree of contamination. The heavy metals (Al-Cr-Mn-Fe-Ni-Co-Zn-Ba-Pb) in groundwater show significant correlations with these indices, suggesting that they are affected by weathering of rock matrix with less anthropogenic impact. Stable isotopes (Oxygen and Hydrogen) were analyzed to identify the possible recharge mechanisms in the groundwater. It has been identified that recharge is mainly due to the local precipitation, which is the result of release metals in the groundwater through weathering.

scholarly journals Quinolone Resistant Enterobacteriaceae and Pseudomonas in Environ-mental Water in Dhaka, Bangladesh

2017 ◽  
Vol 42 (1) ◽  
pp. 28-32
Author(s):  
K M Anwarul Haque ◽  
Kazuhiro Tateda ◽  
Yoshikazu Ishii ◽  
Qumrul Huda ◽  
Ruhul Amin Miah
Keyword(s):  
Escherichia Coli ◽  
Pseudomonas Aeruginosa ◽  
Surface Water ◽  
Potential Role ◽  
Environmental Influence ◽  
Dhaka City ◽  
Bacterial Strains ◽  
Resistant Genes ◽  
Surface Water Samples

Pathogens that carry antibacterial resistant genes represent a threat for failure of antibiotic therapy and are associated with high mortality, morbidity and expenses. In Bangladesh, although quinolone resistance in clinical infections has been reported, environmental influence to this resistance is poorly known. Thus, to examine the existence of quinolone resistant bacterial strains in surface water in Dhaka, the study was conducted during June 2012 to January 2014. Surface water samples from Dhaka city were screened and isolated quinolone resistant Pseudomonas putida, Escherichia coli, Klebsiella pneumoniae, and Pseudomonas aeruginosa. Molecular and genetic analysis identified the resistant determinants in these isolates. The study suggests that potential role of water for the dissemination and transmission of resistant genes among microorganisms causing human and animal infections in Bangladesh.

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