Paper Title
Bioremediation Potential Of Tannery Effluent By Some Cyanobacteria Species

Abstract
The research assessed the degradation of tannery effluent by environmental species of cyanobacteria in Kano in view of the fact that the contamination of the effluents by toxic metals has became a global issue also information on the effect of metals on fauna and flora in Kano is inadequate for promoting the environment. Field investigation and laboratory analysis were the sources of generating data for the study. Samples were analysed for physicochemical, biological and heavy metals properties using the standard procedures. Metals investigated were Mercury, Zinc, and Lead. Anabaena planctonica, Oscillatoria princeps and Spirulina major were the tested organisms. They were identified, isolated and cultured in BG 11 Media within bioreactor and later were individually inoculated into 3 different concentrations (100mls, 150mls and 200mls) of Fata Taning Limited effluents and left for 3, 6 and 9 days to observe bio-sorption capacity; heavy metals were removed by all the species based on concentration and time interval. The data obtained for physicochemical parameters and heavy metals were presented on chart while monthly occurrences of cyanobacteria were presented on a graph. Data obtained for the metals absorption capacity by cyanobacterium were analyzed using ANOVA and the mean were separated using LSD. The results were significant at 5% level of confidence. Computation and statistical analysis were performed using Excel and SAS software package. Results confirmed the high removal efficiency of the species. Among the studied species Oscillatoria princeps and Spirulina major showed greater metal removal efficiency in 200mls of effluents left for nine days. Keywords: Cyanobacteria, Heavy metals, Effluents