@article{Lekan Taofeek Popoola_Adeyinka Sikiru Yusuff_Babatunde Kazeem Adeoye_Tajudeen Adejare Aderibigbe_2020, title={Cd(II) biosorption using bacterial isolates from sawdust: optimization via orthogonal array Taguchi method}, volume={46}, url={https://watersa.net/article/view/9076}, DOI={10.17159/wsa/2020.v46.i4.9076}, abstractNote={<p>Orthogonal array of Taguchi experimental design with L<sub>16</sub> four-level factors: pH (2–8), temperature (303–333 K), time (1–4 h), inoculum concentration (5–20 v/v) and Cd(II) initial concentration (50–200 mg/L) was applied to optimize Cd(II) biosorption from aqueous solution via bacterial isolates from sawdust. The optimum conditions were found to be 4, 303 K, 4 h, 15 v/v % and 50 mg/L for pH, temperature, time, inoculum concentration and Cd(II) initial concentration, respectively. A confirmatory experimental run at these conditions revealed 99.53% Cd(II) removal. Fourier transform infrared revealed the presence of –OH on the bacterial surface enhancing Cd(II) biosorption. The presence of small cavities on the bacterial surface with a porous inner multilayer was shown by scanning electron microscopy analysis. Proposed biosorption mechanisms were electrostatic interaction, surface complexation and ion exchange. In conclusion, bacterial isolates from sawdust could effectively be applied as biosorbent for Cd(II) removal from aqueous solution.</p>}, number={4 October}, journal={Water SA}, author={Lekan Taofeek Popoola and Adeyinka Sikiru Yusuff and Babatunde Kazeem Adeoye and Tajudeen Adejare Aderibigbe}, year={2020}, month={Oct.} }