Potential hazards and health assessment associated with different water uses in the main industrial cities of Egypt

Mekawi, Enas Mahmoud; Abbas, Mohamed; Mohamed, Ibrahim; Jahin, Hossam S.; El-Ghareeb, Doaa K.; Al-Senani, Ghadah M.; Al-Mufarij, Rasmiah S; Abdelhafez, Ahmed A.; Mansour, Rasha R.M.; Bassouny, Mohamed

doi:10.1016/j.jscs.2022.101587

Cited by 6 publications

(6 citation statements)

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“…The BOD 5 is the amount of dissolved oxygen that is needed to oxidize the easily degradable organic matter by aerobic micro-organisms within a 5 day period (Mekawi et al 2023). The high values of the DBO 5 are far exceeding the NMQES with a sharp increase at points O1, O2 and O4 were recorded during months 06, 08, and 10/2021 (Fig.…”

Section: Parameters Measured In Laboratorymentioning

confidence: 96%

“…As for COD is the required oxygen amount, equivalent to the amount of dichromate, that is consumed in complete chemical decomposition of organic pollutants in water (Mekawi et al 2023). The values exceeded the NMQES during months 06, 08/2021, and 10/2022 at all four sampling points as well as during month 04/2021 at point O1 (Fig.…”

Section: Parameters Measured In Laboratorymentioning

confidence: 99%

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Surface Water Quality in Taza, Morocco: A Physicochemical and Bacteriological Assessment with the SEQ-Water System

Mahmoud,

Mehdaoui,

El madani

et al. 2023

Ecol. Eng. Environ. Technol.

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The city of Taza, situated in Morocco, boasts a significant ecological heritage. However, a concerning practice of discharging untreated wastewater into the nearby Oueds has raised apprehensions about potential threats to public well-being. This research endeavors to discern the locations most adversely affected by pollution and subsequently assess their environmental condition. By conducting an extensive year-long analysis encompassing physicochemical and bacteriological aspects, we gathered a comprehensive dataset for appraising the surface water quality, utilizing the SEQ-WATER system as the evaluation framework. Four distinct sites emerged as particularly impacted: upstream of Oueds Jaouna and Taza, downstream of Oued Larbâa and adjacent to the "Julien" public dump, and at the confluence of Oueds Rhouireg and Dfali. Employing the GIS-SEQ integration, we meticulously gauged the physicochemical and bacteriological attributes of these sites. Our assessment unveiled readings that surpassed the established Moroccan benchmarks for surface water quality. Notably, the water exhibited pronounced turbidity and elevated levels of suspended particles, including nitrites and sulfates. Additionally, a notable organic load and microbial contamination involving fecal coliforms (E. coli) and intestinal enterococci were observed. These findings underscore the critical necessity for the implementation of efficient wastewater treatment measures within Taza, which would substantially safeguard both the populace and the surrounding ecosystem. It is imperative to conduct further in-depth investigations to validate these outcomes and devise comprehensive strategies aimed at mitigating the potential hazards linked with the compromised state of surface water.

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Section: Parameters Measured In Laboratorymentioning

confidence: 96%

Section: Parameters Measured In Laboratorymentioning

confidence: 99%

Surface Water Quality in Taza, Morocco: A Physicochemical and Bacteriological Assessment with the SEQ-Water System

Mahmoud,

Mehdaoui,

El madani

et al. 2023

Ecol. Eng. Environ. Technol.

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“…The fundamental issue with the mechanical degradation process may be the irreversible alteration of the polymeric component (Valipour and Montazar 2012). Furthermore, the high level of ACR may be released into the aquatic environment after being used in agricultural areas, causing a risk to human health and threatening aquatic wildlife (Mekawi et al 2023). Thus, estuarine or marine water may keep ACR stable for a substantially longer period of time compared with freshwater (Friedman et al 1995).…”

Section: Acrylamide Structure and Resourcesmentioning

confidence: 99%

Acrylamide toxicity in aquatic animals and its mitigation approaches: an updated overview

Naiel,

Negm,

Ghazanfar

et al. 2023

Environ Sci Pollut Res

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Acrylamide (ACR) is widely applied in various industrial activities, as well as in the water purification process. Furthermore, ACR is synthesized naturally in some starchy grains exposed to high temperatures for an extended time during the cooking process. Because of its widespread industrial usage, ACR might be released into water stream sources. Also, ACR poses a high risk of contaminated surface and ground-water resources due to its high solubility and mobility in water. Furthermore, animal studies have indicated that ACR exposure may cause cancer (in many organs such as lung, prostate, uterus, and pancreas), genetic damage (in both somatic and germ cells), and severe effects on reproduction and development. Recently, numerous studies have shown that ACR has a mild acute cytotoxic impact on aquatic species, particularly during early life stages. Besides, wide-spectrum usage of ACR in many industrial activities presented higher environmental risks as well as major hazards to consumer health. This literature was designed to include all potential and accessible reports on ACR toxicity related with aquatic species. The Preferred Reporting Items for Systematic Reviews were applied to evaluate the risk effects of ACR on aquatic organisms, the ACR sub-lethal concentration in the ecosystem, and the possible protective benefits of various feed additives against ACR toxicity in fish. The major findings are summarized in Tables 2 and 3. The primary aim of this literature was to specify the hazards of ACR toxicity related with fish welfare and possible suggested strategies to reduce its risks.

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“…Shale deposits, rich in clay minerals (Wilson and Wilson, 2014), can be used successfully to improve the characteristics of sandy soils (Eldardiry and Abd El-Hady, 2012;Hassan et al, 2016); yet contaminant founds in these shales should be lessened, prior to their use, to meet the acceptable environmental levels (Khurramovna et al, 2021). Potentially toxic elements are of special concern because these contaminants do not undergo biodegradation (Hashim et al, 2017;Abbas and Bassouny, 2018;Farid et al, 2019); hence possessing long term negative environmental impacts (Abdelhafez et al, 2015;Elshazly et al, 2019;Abdelhafez et al, 2021;Sarhan et al, 2021;Abd-El-Hady and Abdelaty, 2022;Asaad et al, 2022;Hussein et al, 2022;El-Shwarby et al, 2022;Mekawi et al, 2023).…”

Section: Introductionmentioning

confidence: 99%

Evaluating the removal efficiency of potentially toxic elements (PTEs) from a shale deposit by citric acid

2023

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HE MAJORITY of arable lands of Egypt are deserts, mainly sandy soils of low fertility, low water retention and high water and wind erodibility. Shale deposits (rich in clay minerals) might be considered suitable conditioners to improve soil physical, chemical and mineralogical properties and hence increase its productivity. However, these additives should not be a source of contaminants such as PTEs. Accordingly, a technical shale deposit sample was collected fromAbu Thor (longitudes between 33 ○ 22″ and 33 ○ 23ʺ E and latitudes between 29 ○ 00″ and 29 ○ 02ʺ N), Southwest Sinai. In this shale deposit sample, silica comprised 37.35% and alumina was about 18.37%. This sample also contained630 mg Mn, 7704 mg Zn, 19200 mg Fe, 2627 mg Pb, 2763 mg Co and 1310 mg Ni per kg. These levels are not environmentally acceptable in shale deposits when used for soil conditioning. Accordingly, removal or at least reduction in contents of these contaminants in shale deposits should be considered prior to their addition as conditioners to low fertile which exhibit low water holding soils such as the sandy ones. To attain this aim, PVC columns (6.8cm inner diameter× 45cm height) were filled with the shale deposit, washed with citric acid (conc: 10 g L -1 ) at a flow rate of 1 mL per min. with a total volume of 3200 mL per column and the leachate was collected every 100 min to determine its content of PTEs. Cumulative extracted PTEs were calculated versus time and best fitted to the power function kinetic model. This extraction followed the sequence of Ni>Fe>Co>Pb≈Zn>Mn and, in general, the removal efficiencies were low and did not exceed 12% of Ni, 4% of Co, 2.97% of Mn, 2% of Pb and 1% for each of Fe and Zn. It can; therefore, be deduced that citric acid can only chelate the easily bounded forms of PTEs. More researches are needed to investigate the efficiency of citric acid for in-situ long term facilitated phytoextraction of PTEs from shale deposits to attain more acceptable levels

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Potential hazards and health assessment associated with different water uses in the main industrial cities of Egypt

Cited by 6 publications

References 50 publications

Surface Water Quality in Taza, Morocco: A Physicochemical and Bacteriological Assessment with the SEQ-Water System

Surface Water Quality in Taza, Morocco: A Physicochemical and Bacteriological Assessment with the SEQ-Water System

Acrylamide toxicity in aquatic animals and its mitigation approaches: an updated overview

Evaluating the removal efficiency of potentially toxic elements (PTEs) from a shale deposit by citric acid

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