| dc.identifier.citation | REFERENCES [1] Govind, P and Madhuri, S. 2014. Heavy Metals Cause Toxicity in Animals and Fish. Research Journal of Animal, Veterinary and Fishery Sciences. ISSN 2320 – 6535 Vol. 2(2), 17-23. [2] Hassan, S. Awad, Y. Kabir, M. Eun Oh, S. Joo Jin H. Bacterial Biosorption Of Heavy Metal. 2010. Journal Biotechnology : Cracking New Pasterues. [3] Davis TA, Volesky B, Mucci A (2003) A review of the biochemistry of heavy metal biosorption by brown algae. Water Res 37: 4311-4330. 23. [4] Neethu CS, Mujeeb Rahiman KM, Saramma AV, Mohamed Hatha AA (2015) Heavy-metal resistance in Gram-negative bacteria isolated from Kongsfjord, Arctic. Can J Microbiol 61: 429-435. 24. Ahalya N, Ramachandra T, Kanamadi R (2003) Biosorption of heavy metals. Res J Chem Environ 7: 71-79. [5] Ahalya N, Ramachandra T, Kanamadi R (2003) Biosorption of heavy metals. Res J Chem Environ 7: 71-79. [6] Sardrood BP, Goltapeh EM, Varma A (2013) An Introduction to Bioremediation Fungi as Bioremediators. Springer 3-27. [7] Cho DH, Kim EY, Hung YT (2010) Heavy metal removal by microbial biosorbents Environmental Bioengineering Springer 11: 375-402. [8] C.E. Lyman, D.E. Newbury, J.I. Goldstein, D.B. Williams, A.D. Romig, J.T. Armstrong, P. Echlin, C.E. Fiori, D.C. Joy, E. Lifshin and Klaus-Ruediger Peters, Scanning Electron Microscopy, X-Ray Microanalysis and Analytical Electron Microscopy: A Laboratory Workbook, (Plenum Press. New York, N.Y., 1990). | en_US |
| dc.description.abstract | This research studies the ability of Pb and Cd biosorption by Flavobacterium sp bacteria and the characteristics of bacteria after being
exposed to the heavy metal. Heavy metals Pb and Cd with concentrations (2, 4, 6, 8 and 10) ppm were exposed to bacteria as much as 0.4 mL and
measured reduction in metal content every 3 days for 30 days. Analysis of the decrease in Pb and Cd levels uses an Atomic Absorption
Spectrophotometer (AAS) while the bacterial characteristics test after exposure to heavy metals uses Scanning Electron Microscopy (SEM). This
research shows that the Flavobacterium sp bacteria is able to absorb heavy metals Pb and Cd, this can be seen from the decrease in metal content in
the growing media that gets smaller with increasing exposure time until all metals are absorbed 100%. The most maximum biosorption process occurred
in Pb 2 ppm metal solution on day 18 achieved metal reduction percent of 96.08%, while the highest absorption of Cd metal occ urred at a concentration
of 10 ppm on day 24 achieved a reduction percent of 77.21 %. SEM photo showed that the Flavobacterium sp bacteria experienced increased levels of
heavy metals Pb and Cd after being exposed to the metals for 30 days with an increase of < 1.5% in Pb metals and < 0.5% in Cd metals. | en_US |
