Treatability of Tannery Waste Water in Kano City of Nigeria

Solomon, B. O. and Yusuf, R.O and Onyia, Christie Treatability of Tannery Waste Water in Kano City of Nigeria. In: UNSPECIFIED.

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Tanneries have gained negative image in the society because of the high polluting nature of their effluents. A typical tanning company consumes as much as 400 kg sodium sulphide; 250 kg ammonium sulphate; 820 kg sodium chloride; 80 kg sulphuric acid; 740 and 40 kg of lime and sodium carbonate per production day and with about 32 of such companies in Kano, the tanning process is simply the most environmentally polluting industry because of the enormous discharge into the water bodies such as the Challawa and Jakara rivers. Effluent from the tanneries is 225 m3/day and 12 tons of solid waste per day amounting to gross pollution of the environment all year round. The effluent from tannery industries in Kano were collected and characterized in the course of this study. Because of the expensive nature of conventional treatment, biological methods were considered for the treatability of the waste through the use of microorganisms. Hence, the bioremediative potentials of microorganisms isolated from tannery wastewater were evaluated. Seven microorganisms were isolated and were also characterized biochemically. These were used on a sample of supplemented tannery wastewater to determine biomass growth, specific growth rate and their effectiveness in relation to pH, chemical oxygen demand (COD), total suspended solids (TSS) and chloride. The microorganism shows capability for bioremediation of the tanneries waste hence could be effective for the overall management of tannery wastewater in Kano City. Key Words: Tannery industries, Bioremediation, Waste water,

Item Type: Conference or Workshop Item (Paper)
Divisions: Faculty of Natural and Applied Sciences
Depositing User: miss ifeoma agbo
Date Deposited: 03 May 2019 12:22
Last Modified: 03 May 2019 12:22

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