IOSR-JESTFT   Volume-19 ~ Issue-5 ~ May 2025

Abstract: Ensuring that wastewater treatment facilities operate effectively is crucial for maintaining the quality of effluents discharged into natural water bodies and the surrounding environment, in accordance with regulatory standards. This research focuses on assessing the average levels of selected heavy metals (lead, copper, and zinc) and microbial organisms (total and fecal coliforms) before and after treatment at the Karie wastewater treatment plant in Murang'a County. Thirty 500 ml grab samples were collected from three designated points: the inlet (S1), the outlet (S2), and a downstream location on River Karie (S3). Sampling took place during both the dry season (January–February 2023).......

Keywords: Heavy metal, effluents treatment, karie, colony forming units

[1] Akpor, O. B., Ohiobor, G. O., & Olaolu, D. T. (2014). Heavy Metal Pollutants In Wastewater Effluents: Sources, Effects And Remediation. Advances In Bioscience And Bioengineering, 2(4), 37-43.
[2] Akrong, M. O., Ansa, E. D., Anku, W. W., Issahaku, A., & Akon-Yamga, G. (2024, June). Microbiological Reduction Strategy Of Treated Wastewater For Safe Vegetable Production In Accra, Ghana. In International Conference On Wider-Uptake Of Water Resource Recovery From Wastewater Treatment (Pp. 303-307). Cham: Springer Nature Switzerland.
[3] Ali, H. M., Saieed, A., Pao, W., & Ali, M. (2018). Copper Foam/Pcms Based Heat Sinks: An Experimental Study For Electronic Cooling Systems. International Journal Of Heat And Mass Transfer, 127, 381-393.
[4] APHA (2005), Standard Methods For The Examination Of Water And Wastewater, Ashington DC: American Public Health Association. Ahmad, SR, And DM Reynolds (1999), Monitoring Of Water Quality Using Fluorescence Technique: Prospect Of On-Line Process Control. Dissolved Oxyg. Dyn. Model. Case Study A Subtrop. Shallow Lake, 217, 95.
[5] APHA. (1998): Standard Methods For The Examination Of Water And Wastewater. 20th Edition. American Public Health Association, Washington, DC.

Abstract: Rivers State in Niger Delta region is blessed with crude oil. Anthropogenic activities by man to make ends meet have led to environmental pollution which affects the environment and therefore there is need to resolve it using environmentally friendly materials. In this study biochar (adsorbent) was produced and applied in crude oil polluted and control soils. The results of Potentially Toxic Elements in crude oil polluted, treated and control soils were determined using Atomic Absorption Spectrophotometer.......

Keywords: Biochar, Magnetite Nanoparticle, Toxic Metals, Pyrolysis, Absorption

[1] Adeniyi, A. S., Ehirim, E. O. & Wordu, A. A. (2020). Degradation Of Crude Oil Polluted Soil Using Magnetic Nano-Particles. Global Scientific Journal, 8(2), 933-977.
[2] Anegbe, B., Okuo, J.M., Atenaga, M., Ighodaro, A., Emina, A. & Oladejo, N.A. (2018). Distribution And Speciation Of Heavy Metals In Soils Around Some Selected Auto Repair Workshops In Oghara, Delta State, Nigeria. International Journal Of Environment, Agriculture And Biotechnology (IJEAB), 3(2), 574-584.
[3] Boisa, N. & Ogbede, G.T (2016). Sweat Dissolution Of Lead And Other Selected Metals In Traditional Eyeliner (Tiro): A Search For Mechanism Of Dermal Penetration. Jordan Journal Of Chemistry, 11 (3), 173 -182.
[4] Fadojutimi, P. O., Aiyesanmi, F. A., Adelaja, O. A. & Oladele, S. G. (2017). Assessment Of Heavy Metal Enrichment And Level Of Contamination Of Floodplains Soil In Ondo State, Nigeria. Journal Of Geography, Environment And Earth Science International 10(2), 1-11.Crossref.
[5] Ghazaryan, K., Movsesyan, H., Gevorgyan, A., Minkina, T., Sushkova, S., Rajput, V. & Mandzhieva, S. (2020). Comparative Hydrochemical Assessment Of Groundwater Quality From Different Aquifers For Irrigation Purposes Using IWQI: A Case-Study From Masis Province In Armenia. Groundwater For Sustainable Development, 11, 100459.

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