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|Title:||Chromium (VI) biosorption properties of multiple resistant bacteria isolated from industrial sewerage|
|Authors:||Oyetibo, Ganiyu O.|
Ilori, Matthew O.
Obayori, Oluwafemi S.
Amund, O. O.
|Citation:||Oyetibo, G. O., Ilori, M. O., Obayori, O. S., & Amund, O. O. (2013). Chromium (VI) biosorption properties of multiple resistant bacteria isolated from industrial sewerage. Environmental monitoring and assessment, 185(8), 6809-6818.|
|Abstract:||Chromium (VI) [Cr (VI)] biosorption by four resistant autochthonous bacterial strains was investigated to determine their potential for use in sustainable marine water-pollution control. Maximum exchange between Cr (VI) ions and protons on the cells surfaces were at 30–35 °C, pH 2.0 and 350–450 mg/L. The bacterial strains effectively removed 79.0–90.5 % Cr (VI) ions from solution. Furthermore, 85.3–93.0 % of Cr (VI) ions were regenerated from the biomasses, and 83.4–91.7 % of the metal was adsorbed when the biomasses was reused. Langmuir isotherm performed better than Freundlich isotherm, depicting that Cr (VI) affinity was in the sequence Rhodococcus sp. AL03Ni > Burkholderia cepacia AL96Co > Corynebacterium kutscheri FL108Hg > Pseudomonas aeruginosa CA207Ni. Biosorption isotherms confirmed that Rhodococcus sp. AL03Ni was a better biosorbent with a maximum uptake of 107.46 mg of Cr (VI) per g (dry weight) of biomass. The results highlight the high potential of the organisms for bacteria-based detoxification of Cr (VI) via biosorption.|
|Appears in Collections:||Research Articles|
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