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Assessment of Heavy Metal Concentrations (Cu, Cd, Pb, and Zn) in Wastewater from Gusii Treatment Plant in Kisii County, Kenya

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dc.contributor.authorRayori, Douglas
dc.contributor.authorAlbert, Getabu
dc.contributor.authorOmondi, Reuben
dc.contributor.authorPaul, Orina
dc.contributor.authorHellen, Nchore
dc.contributor.authorBoniface, Gisacho
dc.contributor.authorObed, Nyabaro
dc.contributor.authorOmondi, Argwings
dc.contributor.authorOmweno, Job
dc.date.accessioned2024-01-29T08:51:22Z
dc.date.available2024-01-29T08:51:22Z
dc.date.issued2022
dc.description.abstractThe concentrations of heavy metals were determined from wastewater samples collected from the Gusii wastewater treatment plant, from May to July, 2021. Heavy metal analysis was done using a flame atomic absorption spectrophotometer, model AA 7000 Shimadzu, Japan. The results showed that the concentrations of Zinc and Cadmium were below the detection limit for all the sampling sites. The concentrations of Lead and Copper (Mean ± SE) ranged between 0.34 ± 0.06 mg/L and 0.86 ± 0.08 mg/L and 0.25 ± 0.05 and 0.34 ± 0.01 mg/L respectively. The month of July exhibited a higher mean Cu concentration of 0.35 ± 0.004 mg/L compared to the mean Cu concentration (0.2 ± 0.02 mg/L) of May. Likewise, the mean lead concentration of May (0.60 ± 0.04 mg/L) was higher than the mean (0.53 ± 0.05 mg/L.) of July. The independent sample t-test showed that mean Cu concentration difference was significant between the sampling months (t (34) = 21.58; p < 0.05) while for Pb it was not significant between the sampling months (t (30) = 1.241; p = 0.274). The percentage removals of Copper and Lead were generally low at 12.61 % and 6.27 %, respectively. The continued discharge of effluent into River Riana may lead to accumulation of heavy metals in the environment, which in turn poses health risks to the general public. Therefore, the study recommends that Gusii Water and Sanitation Company continue monitoring and assessing the levels of heavy metals in the treatment plant for its sustainability.
dc.description.sponsorshipKisii University and the African Development Bank (AfDB)
dc.identifier.citationRayori, Douglas & Albert, Getabu & Omondi, Reuben & Paul, Orina & Hellen, Nchore & Boniface, Gisacho & Obed, Nyabaro & Omondi, Argwings & Omweno, Job. (2022). Assessment of Heavy Metal Concentrations (Cu, Cd, Pb, and Zn) in Wastewater from Gusii Treatment Plant in Kisii County, Kenya. Pan-African journal.
dc.identifier.urihttps://www.researchgate.net/publication/358525460_Assessment_of_Heavy_Metal_Concentrations_Cu_Cd_Pb_and_Zn_in_Wastewater_from_Gusii_Treatment_Plant_in_Kisii_County_Kenya
dc.identifier.urihttps://repository.nrf.go.ke/handle/123456789/399
dc.language.isoen
dc.publisherPan Africa Journal of Sciences
dc.subjectKisii University
dc.titleAssessment of Heavy Metal Concentrations (Cu, Cd, Pb, and Zn) in Wastewater from Gusii Treatment Plant in Kisii County, Kenya
dc.typeArticle
dspace.entity.typePublication

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