Evaluation of the minerals, heavy metals and microbial compositions of drinking water from different sourcesin Utagba-Uno, Nigeria

Sunday, E Kolawole; Henrietta, O Obueh

doi:10.5897/isaab-jhe2015.0017

Cited by 12 publications

(11 citation statements)

References 11 publications

(9 reference statements)

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“…This result is similar to the report of Kolawole and Obueh (2015) that isolated Staphylococcus spp., E. coli, Klebsiella, Salmonella and Pseudomonas spp. as heavy metals tolerant bacteria.…”

Section: Discussionsupporting

confidence: 83%

Isolation and characterization of heavy metal tolerant bacteria from Panteka stream, Kaduna, Nigeria and their potential for bioremediation

Nwagwu¹,

Yilwa²,

Egbe³

et al. 2017

Afr. J. Biotechnol.

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Panteka stream is a flowing stream polluted with wastes from the activities of mechanics. Water samples collected at different points of the stream were analysed in order to determine the level of heavy metal contamination and bacteria diversity with the view to elucidating the bioremediating potentials of the bacteria isolates. Four bacteria, tolerant to heavy metals, were isolated from Panteka stream. These were identified by morphological and biochemical techniques as Staphylococcus epidermidis, Serratia marcescens, Proteus mirabilis and Escherichia coli. The 16S rRNA gene sequencing and Basic Local Alignment search tool (BLAST) result confirmed E. coli and Staphylococcus spp. as heavy metal tolerant bacteria. Heavy metal tolerance analysis of the isolates exposed to nickel, zinc, lead, cadmium and iron showed that the isolates had maximum tolerance to the four heavy metal. Studies on bioremediation potential of the isolates to heavy metals in the stream revealed that mixed bacteria culture completely removed lead, nickel, zinc and cadmium. Analysis of pure isolates revealed S. epidermidis to be the most effective in removing lead (100%), nickel (100%), cadmium (90.29%), zinc (84.95%) and iron (54.82%). The results obtained from this study show that all four bacteria species isolated from Panteka stream have potential for bioremediation of heavy metals in contaminated water.

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Section: Discussionsupporting

confidence: 83%

Isolation and characterization of heavy metal tolerant bacteria from Panteka stream, Kaduna, Nigeria and their potential for bioremediation

Nwagwu¹,

Yilwa²,

Egbe³

et al. 2017

Afr. J. Biotechnol.

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“…But its more than the results founded by Kolawole and Obueh, ( 2015) who found that total heterotrophic bacteria co unts in tap water of Utagba-Uno, Nigeria was 1.2 × 10 2 CFU/ml.…”

contrasting

confidence: 41%

Physicochemical and Microbial Quality of Thamar City Drinking Water, Yemen

Amran¹,

Omer²,

Alwasaei³

et al. 2018

IJAR

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“…Many studies have been conducted in reference to the concentration and potential health risks associated with toxic metals, as well as necessary elements in surface, ground and bottled waters around the world (Hadiani, Dezfooli-manesh, Shoebi, Ziarati, & Khaneghah 2014;Kolawole & Obueh, 2015). However, there is limited data on both the chemical water quality monitoring and human health risk assessment (HHRA) of HM in drinking water in Uganda.…”

Section: Introductionmentioning

confidence: 99%

Human Health Risk Assessment of Heavy Metals in Kampala (Uganda) Drinking Water

Bamuwamye¹,

Ogwok²,

Tumuhairwe³

et al. 2017

JFR

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Levels of aluminium, arsenic, cadmium, chromium, copper, iron, mercury, manganese, nickel, lead and zinc in tap water, groundwater-fed protected spring and bottled water were determined. The cancer and non-cancer risks associated with ingestion of heavy metals (HM) were also assessed for both children and adults. Forty seven water samples obtained from five divisions of Kampala city were analyzed using atomic absorption spectrophotometry. Cancer and non-cancer risks were determined using incremental lifetime cancer risk (ILCR) and non-carcinogenic hazard quotient (HQ), respectively. Lead content was higher than permissible limits (PL) according to East African Standard, World Health Organization, European Union and United States Environmental Protection Agency (USEPA). Arsenic showed minor exceedances above guideline values in tap water and groundwater-fed protected spring, whereas mercury, manganese and nickel were higher than PL. Levels of aluminium, cadmium, chromium, copper, iron, and zinc were below the PL. The lifetime risk of developing cancer through the oral route was greater than the USEPA acceptable level for both children and adults, revealing that exposure to HM in drinking water posed an unacceptable potential cancer risk. Arsenic contributed ca. 90% of the ILCR in tap water and groundwater-fed protected spring. The combined non-cancer risk of the HM expressed as hazard index (HI) was greater than one, with values for children being higher than those for adults. Lead contribution towards HI was in all cases above 90%. These results demonstrate the presence of alarming non-cancer risks for children.

show abstract

Evaluation of the minerals, heavy metals and microbial compositions of drinking water from different sourcesin Utagba-Uno, Nigeria

Cited by 12 publications

References 11 publications

Isolation and characterization of heavy metal tolerant bacteria from Panteka stream, Kaduna, Nigeria and their potential for bioremediation

Isolation and characterization of heavy metal tolerant bacteria from Panteka stream, Kaduna, Nigeria and their potential for bioremediation

Physicochemical and Microbial Quality of Thamar City Drinking Water, Yemen

Human Health Risk Assessment of Heavy Metals in Kampala (Uganda) Drinking Water

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