Pollution and health risks assessment of nitrate and phosphate concentrations in water bodies in South Eastern, Nigeria

Isiuku, Beniah Obinna; Enyoh, Christian Ebere

doi:10.1016/j.envadv.2020.100018

Cited by 72 publications

(43 citation statements)

References 16 publications

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“…Consequently, the aquatic organisms in water will be reduced due to eutrophication phenomenon, and eventually lead to the gradual extinction of the entire regional water ecosystem (Liu et al 2018). Studies have shown that phosphate is sufficient to stimulate the growth of algae when it is as low as 0.02mg/L (Bacelo et al 2020; Isiuku et al 2020; Ogata et al 2020; Al-Alwani et al 2018). At present, numerous technologies have been applied for the treatment of phosphate, such as biological method (Buhmann et al 2013), flocculation (Langer et al 2017) membrane filtration (Leo et al 2011) and adsorption (Drenkova-Tuhtan et al 2017; Loganathan et al 2014), etc.…”

Section: Introductionmentioning

confidence: 99%

Preparation of GO/MIL-101(Fe,Cu) composite and its adsorption mechanisms for phosphate in aqueous solution

Liu

Bakhtari

et al. 2021

Environ Sci Pollut Res

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In this study, , Cu), and Graphene Oxide (GO) /MIL-101(Fe,Cu) were synthesized to compose a novel sorbent. The adsorption properties of these three MOFs-based composites were compared toward the removal of phosphate. Furthermore, the influencing factors including reaction time, pH, temperature and initial concentration on the adsorption capacity of phosphate on these materials as well as the reusability of the material were discussed. The structure of fabricated materials and the removal mechanism of phosphate on the composite material were analyzed by Scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), nitrogen adsorption-desorption analysis and zeta potential. The results show that the maximum adsorption capacity of phosphate by the composite GO/MIL-101(Fe,Cu)-2% was 204.60 mg•g -1 , which is higher than that of MIL-101(Fe,Cu) and MIL-101(Fe). likewise the specific surface area of GO/MIL-101(Fe,Cu)-2% is 778.11 m 2 /g is higher than that of Cu) and ,which are 747.75 and 510.66m 2 /g respectively. The adsorption mechanism of phosphate is electrostatic attraction, form coordination bonds and hydrogen bonds. The fabricated material is a promising adsorbent for the removal of phosphate with good reusability.

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Section: Introductionmentioning

confidence: 99%

Preparation of GO/MIL-101(Fe,Cu) composite and its adsorption mechanisms for phosphate in aqueous solution

Liu

Bakhtari

et al. 2021

Environ Sci Pollut Res

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“…The levels of phosphate in the studied river estuaries varied between 1.37 and 3.11 mg/l. The reported range is lower than 2.144 to 9.741mg/l by Isiuku and Enyoh [45]. The mean value of phosphate recorded (2.45±0.77 mg/l) is also lower than the limit recommended for unpolluted water (3.5 mg/l) by NESREA [31].…”

Section: Distribution Of Nutrients In the Studied River Estuariesmentioning

confidence: 67%

Physicochemical properties, total hydrocarbon content, and trace metals of water and sediments from major River Estuaries within the Niger Delta Region of Nigeria

Ebong¹,

John²

2021

World J. Adv. Res. Rev.

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Water and sediment samples from Cross River, Imo River, and Qua Iboe River Estuaries were collected and treated using standard analytical procedures. The samples were analyzed for their physicochemical properties, total hydrocarbon content (THC), and trace metals. Results obtained revealed that, the mean levels of total suspended solids (TSS), total dissolved solids (TDS), turbidity, colour, biochemical oxygen demand (BOD), THC, cadmium (Cd), iron (Fe), nickel (Ni), lead (Pb), and zinc (Zn) in water were higher than their acceptable limits in Nigeria. Whereas, the mean levels water pH, electrical conductivity (EC), dissolved oxygen (DO), nitrate, sulphate, phosphate, and copper (Cu) were within their acceptable limits. The results obtained also revealed that, the mean levels of nitrate, THC, and Fe in sediments were higher than their recommended limits. While the levels of pH, EC, sulphate, phosphate, Cd, Cu, Ni, Pb, and Zn in sediments were within their recommended limits. This study indicated that the anthropogenic activities by oil and oil-related companies within the Niger Delta Region of Nigeria may have contributed significantly to the high level of toxic substances in the water channels within the zone. The results obtained revealed that, the direct or indirect exposure to untreated water from the studied water channels may result in serious health challenges. Hence, the environment should be closely monitored to forestall a devastating situation in the region.

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“…BOD and COD values depend on the oxygen consumption to break down organic and inorganic mater. Hence high BOD and COD values can be attributed to the rise in phosphate limits which in turn increases the eutrophication load of the river due to the increase in algal blooms as a result of nutrient enrichment (Adeola Fashae et.al, 2019;Isiuku & Enyoh, 2020). The high phosphate values could be attributed to the direct dumping of municipality and shops wastes into the river water.…”

Section: Resultsmentioning

confidence: 99%

Evaluation of Physicochemical and Biological Parameters on the Water Quality of ShilabatiRiver, West Bengal, India

2021

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Anthropogenic activities affect the rivers and the entire basin in different dimensions. All the river basins including Ganga and Damodar are polluted from unplanned anthropogenic activities. This study is an attempt to access the quality of Shilabati River by computing water quality and pollution index using eleven parameters pH, COD, BOD, DO, TDS, Total Hardness, Total Alkalinity, Phosphate, Chloride, Nitrate, and Turbidity measured at eighteen different sites. The BOD and TC counts are found to be 2.45 mg/l and 9334 MPN/100 ml; which reveal that the river water falls under the moderately polluted category of Central Pollution Control Board. The high phosphate concentration suggests a heavy load of anthropogenic and industrial wastes and contributes to the rise in COD and BOD. The high phosphate concentrations also account for the eutrophic water. The physicochemical parameters fall mostly under the E category of Central Pollution Control Board. The Water Quality Index, Comprehensive Pollution Index, and Eutrophication index values show that the river water quality is poor and seriously polluted indicating that the water is not suitable for drinking, domestic purpose, and also for healthy survival of aquatic life and needs urgent management.

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Pollution and health risks assessment of nitrate and phosphate concentrations in water bodies in South Eastern, Nigeria

Cited by 72 publications

References 16 publications

Preparation of GO/MIL-101(Fe,Cu) composite and its adsorption mechanisms for phosphate in aqueous solution

Preparation of GO/MIL-101(Fe,Cu) composite and its adsorption mechanisms for phosphate in aqueous solution

Physicochemical properties, total hydrocarbon content, and trace metals of water and sediments from major River Estuaries within the Niger Delta Region of Nigeria

Evaluation of Physicochemical and Biological Parameters on the Water Quality of ShilabatiRiver, West Bengal, India

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