The processes involved in the conversion of cassava tuber into various products generate large volumes of wastes in solid, liquid and gaseous forms. These wastes when discharged into the environment have serious environmental impacts on the natural composition and structure of soil. The aim of this research work was to investigate the effects of cassava whey on the physicochemical properties and metal contents of soil samples around Gari facrory at Erinfun Village along Federal Polytechnic road, Ado-Ekiti. The physicochemical parameters determined were the pH, moisture content, loss on ignition, organic matter, water holding capacity, bulk density, particle density, total porosity, calcium (Ca), magnesium (Mg) and cyanide (CN). Heavy metals determined were lead (Pb), zinc (Zn), copper (Cu), manganese (Mn), cadmium (Cd), chromium (Cr) and iron (Fe). The presence of cassava whey in the soil led to increasing soil acidity, moisture content, water holding capacity, CN, Cr, Ni, Pb and As concentrations while reductions were observed in total porosity, organic matter, loss on ignition, particle density, Ca, Mg, Fe, Mn and Zn concentrations. The results show appreciable variations of physicochemical parameters and heavy metal contents when compared to the control sample.
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Abegunde SM, Adejuwon OM, Olorunfemi TO. 2017. Safety Assessment of Hand-Dug Well Water Samples from Selected Towns in Ekiti State, Nigeria. Journal of Advanced Research In Applied Chemistry & Chemical Engineering, 4(1&2). Retrieved from http://science.adrpublications.in/index.php/ JoARACCE/article/view/351
Bouyoucos GJ. 1962. Improved hydrometer method for making particle size analysis, Agron. J., 54: 464-465
Bray RH, Kurtz LT. 1945. Determination of Total organic and available forms of phosphorus in soils, Soil Sci., 59: 30-45
Bremner JM. 1945. Total nitrogen. In: Black C.A. (ed) Methods of soil analysis part 2, Agron., 9: 149-178
Chopra G, Kanzar C, Analytical Agricultural Chemistry, 2nd Edition Prentice- Hall, India
Davey BG, Conyers MK. 1988. Determining the pH of acid soils, Soil Sci., 146: 141-150
European Public Health Alliance. 2009. Air, Water Pollution and Health Effects. Retrieved from http://www.epha.org/r/54.
Etinosa OI, Ozede NI. 2015. The Impact of Cassava Effluent on the Microbial and Physicochemical Characteristics on Soil Dynamics and Structure, Jordan Journal of Biological Sciences. 8(2): 107-112.
Eze VC, Onyilide DM. 2015. Microbiological and physicochemical characteristics of soil receiving cassava effluent in Elele, Rivers State, Nigeria. J Appl Environ Microbiol 3: 20-24.
ISI. 1983. India standard specification for drinking water, New Delhi.
Iwegbue CMA, Bassey FI, Tesi GO, Nwajei GE, Tsafe AI. 2013 Assessment of Heavy Metal Contamination in Soils around Cassava Processing Mills in Sub-Urban Areas of Delta State, Southern Nigeria. Nigerian Journal of Basic and Applied Science, 21(2): 96-104 DOI: http://dx.doi.org/10.4314/ njbas.v21i2.2
Mc Carthy P, Malcolm RL, Clapp CE, Bloom PR. 1990. An introduction to soil humic substances, Humic substances in soil and crop sciences: selected readings, W: American Society of Agronomy, Soil Science of America. Madison, 1- 12.
Nelson DW, Sommers LE. 1982. Total Carbon, Organic Carbon and organic matter, 539-579, In Page, A.Z et al.,(ed) Method of soil analysis
Obueh HO, Odesiri-Eruteyan E. 2016. A Study on the Effects of Cassava Processing Wastes on the Soil Environment of a Local Cassava Mill. J Pollut Eff Cont 4: 177. doi: 10.4176/2375-4397.1000177
Stevenson FJ. 1972. Role and Function of Humus in Soil with Emphasis on Adsorption of Herbicides and Chelation of Micronutrients. BioScience
Thomas GW. 1996. Methods of soil analysis, chemical methods SSA book series No.8 USA
Uzochukwu S, Oyede RA, Ayanda O. 2001. Utilization of garri industry effluent. Nigerian J Microbiol, 15: 87-92