Removal of Selected Heavy Metals from the Water of the River Sosiani in Uasin Gishu County Using Cynodon dactylon (Couch Grass)

Main Article Content

Richard Kiptoo Lelei https://orcid.org/0009-0009-9550-2241
Pius Kipkemboi https://orcid.org/0000-0002-5556-5223
Samuel Lutta https://orcid.org/0000-0002-7558-6785

Keywords

Heavy metals, adsorption, Cynodon dactylon, river water, pH, purification

Abstract

The management of heavy metal pollution in rivers is a growing concern due to the rapid pace of industrialization and urbanization. Rivers are especially susceptible to heavy metal contamination due to various human activities, such as industrial processes, agricultural runoff, mining operations and improper waste disposal. Several studies in Kenya have documented the alarming presence of elevated heavy metal levels in various rivers, raising concerns about environmental and public health impacts. A variety of methods and techniques have been developed and implemented to remove heavy metals from contaminated water however, several of these techniques are expensive. The potential of plants to serve as a bio adsorbent offers a sustainable solution for addressing heavy metal pollution in rivers. This research therefore investigated the efficacy of modified Cynodon dactylon grass as an adsorbent for removing lead (Pb²⁺), manganese (Mn²⁺), cadmium (Cd²⁺) and chromium (Cr⁶⁺) ions from Sosiani River water. Water samples were collected from three purposively selected sites along the Sosiani River in Uasin Gishu County, Kenya and the mean heavy metal concentrations were analysed using Atomic Absorption Spectroscopy (AAS). The batch adsorption experiments were conducted in triplicates for untreated and treated grass. The study also examined the impact of pH levels on adsorption by testing at pH levels of 5, 7 and 9. Data was coded into SPSS software version 20 and analysed using descriptive and inferential statistics. The results indicate that the mean concentration of Cr⁶⁺ and Pb²⁺ in the water samples were 1.49 mg/L and 1.61 mg/L respectively. Both metals ions exceeding the NEMA guideline. However, the concentration of Cd²⁺ and Mn²⁺ was found to be 0.002 mg/L and 0.05 mg/L which is below the NEMA recommended level. Further, the heavy metal concentrations in Sosiani River water samples varied significantly (p<0.05) across different locations. Also, the chemically treated Cyanodon dactylon grass exhibited a higher percentage of adsorption across all tested heavy metals compared to the untreated Cyanodon dactylon grass. Lastly, there was a higher adsorption efficiency for treated adsorbent at pH 5 compared to pH 9. These findings demonstrate the potential of Cynodon dactylon grass as an effective and more accessible alternative for river water purification. Further research is needed to optimize the conditions and modifications for enhanced adsorption performance.

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References

Achieng’, A. O., Raburu, P. O., Kipkorir, E. C., Ngodhe, S. O., Obiero, K. O., & Ani-Sabwa, J. (2017). Assessment of water quality using multivariate techniques in River Sosiani, Kenya. Environmental monitoring and assessment, 189, 1-13.

Akenga, T., Ayabei, K., Kerich, E., Sudoi, V., & Kuya, C. (2020). Evaluation of levels of selected heavy metals in kales, soils and water collected from irrigated farms along river Moiben, Uasin-Gishu County, Kenya. Journal of Geoscience and Environment Protection, 8(02), 144.

Akenga, T. (2022). Field Accumulation in Selected Heavy Metal Ions and Associated Health Risks in Irrigation Water, Soil and Tomatoes Collected from Homa Hills, Homabay County, Kenya.

Akenga, T., Sudoi, V., Machuka, W., & Kerich, E. (2016). Heavy Metal Concentrations in Agricultural Farms in Homa Hills Homa Bay County, Kenya. International Journal of Science and Research, 5(10), 1664-1669.

Akenga, T., Sudoi, V., Machuka, W., Kerich, E., & Ronoh, E. (2017). Heavy metals uptake in maize grains and leaves in different agro ecological zones in Uasin Gishu County. Journal of Environmental Protection, 8(12), 1435.

Al Osman, M., Yang, F., & Massey, I. Y. (2019). Exposure routes and health effects of heavy metals on children. Biometals, 32, 563-573.

Algül, F., & Beyhan, M. (2020). Concentrations and sources of heavy metals in shallow sediments in Lake Bafa, Turkey. Scientific reports, 10(1), 11782.

Ali, H., & Khan, E. (2018). Bioaccumulation of non-essential hazardous heavy metals and metalloids in freshwater fish. Risk to human health. Environmental chemistry letters, 16(3), 903-917.

Alka, S., Shahir, S., Ibrahim, N., Ndejiko, M. J., Vo, D. V. N., & Abd Manan, F. (2021). Arsenic removal technologies and future trends: A mini review. Journal of cleaner production, 278, 123805.

Alloway, B. J. (2013). Sources of heavy metals and metalloids in soils. Heavy metals in soils: trace metals and metalloids in soils and their bioavailability, 11-50.

Amadi, E. K. (2013). Nutrient loads and heavy metals assessment along Sosiani River, Kenya. Chem. Mat. Res, 3, 14-20.

Angon, P. B., Islam, M. S., Kc, S., Das, A., Anjum, N., Poudel, A., & Suchi, S. A. (2024). Sources, effects and present perspectives of heavy metals contamination: Soil, plants and human food chain. Heliyon.

Arya, S., & Kumar, S. (2020). E-waste in India at a glance: Current trends, regulations, challenges and management strategies. Journal of Cleaner Production, 271, 122707.

Azeez, N. A., Dash, S. S., Gummadi, S. N., & Deepa, V. S. (2021). Nano-remediation of toxic heavy metal contamination: Hexavalent chromium [Cr (VI)]. Chemosphere, 266, 129204.

Balali-Mood, M., Naseri, K., Tahergorabi, Z., Khazdair, M. R., & Sadeghi, M. (2021). Toxic mechanisms of five heavy metals: mercury, lead, chromium, cadmium, and arsenic. Frontiers in pharmacology, 12, 643972.

Bibi, M., Samiullah, F. B., & Saba Afzal, S. (2023). Essential and non-essential heavy metals sources and impacts on human health and plants. Pure and Applied Biology (PAB), 12(2), 835-847.

Bukola, D., Zaid, A., Olalekan, E. I., & Falilu, A. (2015). Consequences of anthropogenic activities on fish and the aquatic environment. Poultry, Fisheries & Wildlife Sciences, 3(2), 1-12.

Chai, W. S., Cheun, J. Y., Kumar, P. S., Mubashir, M., Majeed, Z., Banat, F., ... & Show, P. L. (2021). A review on conventional and novel materials towards heavy metal adsorption in wastewater treatment application. Journal of
Cleaner Production, 296, 126589.

Chakraborty, S. K., & Chakraborty, S. K. (2021). River pollution and perturbation: Perspectives and processes. Riverine Ecology Volume 2: Biodiversity Conservation, Conflicts and Resolution, 443-530.

Charkiewicz, A. E., & Backstrand, J. R. (2020). Lead toxicity and pollution in Poland. International journal of environmental research and public health, 17(12), 4385.

Cimboláková, I., Uher, I., Laktičová, K. V., Vargová, M., Kimáková, T., & Papajová, I. (2019). Heavy metals and the environment. Environmental factors affecting human health, 1, 29.

de Carvalho Machado, C., & Dinis-Oliveira, R. J. (2023). Clinical and forensic signs resulting from exposure to heavy metals and other chemical elements of the periodic table. Journal of clinical medicine, 12(7), 2591.

Dökmeci, A. H. (2020). Environmental impacts of heavy metals and their bioremediation. Heavy Metals-Their Environmental Impacts and Mitigation, 1-16.

Fang, T., Yang, K., Lu, W., Cui, K., Li, J., Liang, Y., ... & Li, H. (2019). An overview of heavy metal pollution in Chaohu Lake, China: enrichment, distribution, speciation, and associated risk under natural and anthropogenic changes. Environmental Science and Pollution Research, 26, 29585-29596.

Flora, G., Gupta, D., & Tiwari, A. (2012). Toxicity of lead: a review with recent updates. Interdisciplinary toxicology, 5(2), 47-58.

Gautam, P. K., Gautam, R. K., Banerjee, S., Chattopadhyaya, M. C., & Pandey, J. D. (2016). Heavy metals in the environment: fate, transport, toxicity and remediation technologies. Nova Sci Publishers, 60, 101-130.

Gheorghe, S., Stoica, C., Vasile, G. G., Nita-Lazar, M., Stanescu, E., & Lucaciu, I. E. (2017). Metals toxic effects in aquatic ecosystems: modulators of water quality. Water quality, 87, 59-89.

Guilarte, T. R. (2010). Manganese and Parkinson’s disease: a critical review and new findings. Environmental health perspectives, 118(8), 1071-1080.

Hauptman, M., Bruccoleri, R., & Woolf, A. D. (2017). An update on childhood lead poisoning. Clinical pediatric emergency medicine, 18(3), 181-192.

Jain, C. K., Malik, D. S., & Yadav, A. K. (2016). Applicability of plant based biosorbents in the removal of heavy metals: a review. Environmental Processes, 3, 495-523.

Jepkoech, J. K., Simiyu, G. M., & Arusei, M. (2013). Selected heavy metals in water and sediments and their bioconcentrations in plant (Polygonum pulchrum) in Sosiani River, Uasin Gishu County, Kenya.

Junaid, M., Hashmi, M. Z., Malik, R. N., & Pei, D. S. (2016). Toxicity and oxidative stress induced by chromium in workers exposed from different occupational settings around the globe: A review. Environmental Science and Pollution Research, 23, 20151-20167.

Jyothi, N. R. (2020). Heavy metal sources and their effects on human health. Heavy metals-their environmental impacts and mitigation, 1-12.

Khayatzadeh, J., & Abbasi, E. (2010, April). The effects of heavy metals on aquatic animals. In The 1st International Applied Geological Congress, Department of Geology, Islamic Azad University–Mashad Branch, Iran (Vol. 1, pp. 26-28).

Kimani, A. K. (2017). Climate Change Impact on Agriculture: Challenges on Maize Production in Uasin Gishu and Trans-nzoia Counties (Doctoral dissertation, University of Nairobi).

Kumari, K., Jha, A. K., Pranita, A. K., & Sharma, U. (2021). Removal of As (III) with (Cynodon dactylon) Green dub and Orange peel from aqueous medium. Rasayan Journal of Chemistry, 14(2), 1072-1080.

Kwakye, G. F., Paoliello, M. M., Mukhopadhyay, S., Bowman, A. B., & Aschner, M. (2015). Manganese-induced parkinsonism and Parkinson’s disease: shared and distinguishable features. International journal of environmental research and public health, 12(7), 7519-7540.

Latif, A., Bilal, M., Asghar, W., Azeem, M., Ahmad, M. I., Abbas, A., ... & Shahzad, T. (2018). Heavy metal accumulation in vegetables and assessment of their potential health risk. Journal of Environmental Analytical Chemistry, 5(234), 2380-2391

Maina, M., Wambu, E., & Kituyi, L. (2022). Assessment of Heavy Metal Concentrations in Tomatoes (Lycopersicum esculentum) Cultivated in Horticultural Farms of Nakuru County, Kenya. International Journal of Education, Science and Social Sciences, 1(2), 1-9.

Maina, M., Wambu, E., & Kituyi, L. (2023). The Levels of Selected Heavy Metals in Kales from Horticultural Farms in Nakuru County, Kenya. International Journal of Education, Science and Social Sciences, 2(1), 1-11.

Masakha, E. J., Moturi, W. N., & Ogendi, G. M. (2017). Spatial Temporal Distribution of Selected Heavy Metals in an Urban Stream: Case Study of Sosiani River in Eldoret Municipality Kenya. Journal of Natural Sciences Research, 7(12).

Masindi, V., Mkhonza, P., & Tekere, M. (2021). Sources of heavy metals pollution. Remediation of Heavy Metals, 419-454.

Maurya, P. K., Malik, D. S., Yadav, K. K., Kumar, A., Kumar, S., & Kamyab, H. (2019). Bioaccumulation and potential sources of heavy metal contamination in fish species in River Ganga basin: Possible human health risks evaluation. Toxicology reports, 6, 472-481.

Mehta, V., Midha, V., Mahajan, R., Narang, V., Wander, P., Sood, R., & Sood, A. (2017). Lead intoxication due to ayurvedic medications as a cause of abdominal pain in adults. Clinical Toxicology, 55(2), 97-101.

Mishra, S., Bharagava, R. N., More, N., Yadav, A., Zainith, S., Mani, S., & Chowdhary, P. (2019). Heavy metal contamination: an alarming threat to environment and human health. Environmental biotechnology: For sustainable
future, 103-125.

Munawer, M. E. (2018). Human health and environmental impacts of coal combustion and post-combustion wastes. Journal of Sustainable Mining, 17(2), 87-96.

Munene, E. N., Hashim, N. O., & Ambusso, W. N. (2023). Human health risk assessment of heavy metal concentration in surface water of Sosian river, Eldoret town, Uasin-Gishu County Kenya. MethodsX, 11, 102298.

Murage, D. A. N. I. E. L. (2022). Adsoption of selected heavy metals using modified Pennisetum purpureum plant stalks: a case study of River Ruiru, Kiambu County, Kenya.

Murithi, G., Onindo, C. O., Wambu, E. W., & Muthakia, G. K. (2014). Removal of cadmium (II) ions from water by adsorption using water hyacinth (Eichhornia crassipes) biomass. BioResources, 9(2), 3613-3631.

Mwangi, J. M. (2013). Determination of Concentration of Selected Heavy Metals in Tilapia Fish, Sediments and Water from mbagathi and Ruiru Athi River Tributaries, Kenya.

Ndimele, P. E., & Jimoh, A. A. (2011). "Water hyacinth (Eichhornia crassipes (Mart.) Solms.) in phytoremediation of heavy metal polluted water of Ologe Lagoon, Lagos, Nigeria." Research Journal of Environmental Sciences, 5(5),
424-433.

NEMA (2023). Environmental Management and Co-Ordination (Water Quality) Regulations, 2006 Arrangement of Regulations. http://www.nema.go.ke/images/Docs/Regulations%202023%20Review/
ZERO%20DRAFT%20water_quality_regulations-Clean%20Copy,%204th%20August%202023.pdf

Njuguna, S. M., Yan, X., Gituru, R. W., Wang, Q., & Wang, J. (2017). Assessment of macrophyte, heavy metal, and nutrient concentrations in the water of the Nairobi River, Kenya. Environmental monitoring and assessment, 189,
1-14.

Nyamora, J. M., Njiru, J., Getabu, A., Nyakeya, K., & Muthumbi, A. (2023). An overview of heavy metal pollution in the Western Indian Ocean (WIO) region of Kenya: A review. Journal of Aquatic and Terrestrial Ecosystems, 1(1), 35-41.

Ochiba, N. K. (2020). Assessment Of Levels Of Selected Heavy Metals In Borehole Water In Ongata Rongai, Kajiado County, Kenya (Doctoral dissertation, University Of Nairobi).

Olero, J. K., Simiyu, G. M., Kipkorir, E. C., & Wakhisi, J. (2018). Selected heavy metal levels in cereals in fluorspar Mining Belt, Elgeyo Marakwet County in Kenya. Africa Environmental Review Journal, 3(1), 65-73.

Patrick, L. (2006). Lead Toxicity, a review of the literature. Part I: Exposure, Evaluation, and treatment. Alternative medicine review, 11(1).

Rao, R. A., & Rao, A. R. (2010). "Adsorption studies on treatment of water and wastewater by using Moringa oleifera seeds as an adsorbent." Journal of Environmental Science and Health, Part A, 45(5), 599-615.


Saad, A. A., El-Sikaily, A., & Kassem, H. (2014). Essential, non-essential metals and human health. Blue Biotechnology Journal, 3(4), 447.

Saha, R., Nandi, R., & Saha, B. (2011). Sources and toxicity of hexavalent chromium. Journal of Coordination Chemistry, 64(10), 1782-1806.

Samarghandian, S., Shirazi, F. M., Saeedi, F., Roshanravan, B., Pourbagher-Shahri, A. M., Khorasani, E. Y., ... & Mehrpour, O. (2021). A systematic review of clinical and laboratory findings of lead poisoning:

Sandeep, G., Vijayalatha, K. R., & Anitha, T. (2019). Heavy metals and its impact in vegetable crops. Int J Chem Stud, 7(1), 1612-21.

Santamaria, A. B., & Sulsky, S. I. (2010). Risk assessment of an essential element: manganese. Journal of Toxicology and Environmental Health, Part A, 73(2-3), 128-155.

Shahzad, B., Tanveer, M., Rehman, A., Cheema, S. A., Fahad, S., Rehman, S., & Sharma, A. (2018). Nickel; whether toxic or essential for plants and environment-A review. Plant physiology and biochemistry, 132, 641-651.

Shieunda, O. R., Neyole, E., Omuterema, S., & Orata, F. (2019). Analysis of spatial and temporal levels of heavy metals in water, sediments and fish in Sosiani River.

Singh, S., Zacharias, M., Kalpana, S., & Mishra, S. (2012). Heavy metals accumulation and distribution pattern in different vegetable crops. Journal of Environmental Chemistry and Ecotoxicology, 4(10), 170-177.

Sonone, S. S., Jadhav, S., Sankhla, M. S., & Kumar, R. (2020). Water contamination by heavy metals and their toxic effect on aquaculture and human health through food Chain. Lett. Appl. NanoBioScience, 10(2), 2148-2166.

Tariq, A., & Mushtaq, A. (2023). Untreated wastewater reasons and causes: a review of most affected areas and cities. Int. J. Chem. Biochem. Sci, 23(1), 121-143.

Tchounwou, P. B., Yedjou, C. G., Patlolla, A. K., & Sutton, D. J. (2012). Heavy metal toxicity and the environment. Molecular, clinical and environmental toxicology: volume 3: environmental toxicology, 133-164.

Teklay, A. (2016). Physiological effect of chromium exposure: a review. Int J Food Sci Nutr Diet S, 7, 1-11.
Ungureanu, E. L., & Mustatea, G. (2022). Toxicity of heavy metals. In Environmental Impact and Remediation of Heavy Metals. IntechOpen.

Wan, S., Ma, Z., Xue, Y., Ma, M., Xu, S., Qian, L., & Zhang, Q. (2014). Sorption of lead (II), cadmium (II), and copper (II) ions from aqueous solutions using tea waste. Industrial & Engineering Chemistry Research, 53(9), 3629-3635.

Waseem, A., Arshad, J., Iqbal, F., Sajjad, A., Mehmood, Z., & Murtaza, G. (2014). Pollution status of Pakistan: a retrospective review on heavy metal contamination of water, soil, and vegetables. BioMed research international,
2014(1), 813206.

Wasike, P. W. (2015). Analysis of Selected Heavy Metals in Water from River Kuywa and Adjacent Wells in Bungoma Central Sub County-Kenya.

World Health Organization. (2023). Exposure to lead: a major public health concern. Preventing disease through healthy environments. World Health Organization.

Yan, A., Wang, Y., Tan, S. N., Mohd Yusof, M. L., Ghosh, S., & Chen, Z. (2020). Phytoremediation: a promising approach for revegetation of heavy metal-polluted land. Frontiers in plant science, 11, 359.

Yargholi, B., & Azarneshan, S. (2014). Long-term effects of pesticides and chemical fertilizers usage on some soil properties and accumulation of heavy metals in the soil (case study of Moghan plain's (Iran) irrigation and drainage network). International Journal of Agriculture and Crop Sciences, 7(8), 518.

Zhang, C., Qiao, Q., Appel, E., & Huang, B. (2012). Discriminating sources of anthropogenic heavy metals in urban street dusts using magnetic and chemical methods. Journal of Geochemical Exploration, 119, 60-75.

Zhou, H., Yang, W. T., Zhou, X., Liu, L., Gu, J. F., Wang, W. L., ... & Liao, B. H. (2016). Accumulation of heavy metals in vegetable species planted in contaminated soils and the health risk assessment. International journal of environmental research and public health, 13(3), 289.

Zwolak, A., Sarzyńska, M., Szpyrka, E., & Stawarczyk, K. (2019). Sources of soil pollution by heavy metals and their accumulation in vegetables: A review. Water, air, & soil pollution, 230, 1-9.