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Researchers from Quaid-I-Azam University Report New Studies and Findings in the Area of Microbiology (Bacterial succession and degradative changes by...

September 2, 2014



Researchers from Quaid-I-Azam University Report New Studies and Findings in the Area of Microbiology (Bacterial succession and degradative changes by biofilm on plastic medium for wastewater treatment)

By a News Reporter-Staff News Editor at Life Science Weekly -- New research on Life Science Research is the subject of a report. According to news reporting originating from Islamabad, Pakistan, by NewsRx correspondents, research stated, "Biofilms contain a diverse range of microorganisms and their varying extracellular polysaccharides. The present study has revealed biofilm succession associated with degradative effects on plastic (polypropylene) and contaminants in sludge."

Our news editors obtained a quote from the research from Quaid-I-Azam University, "The wet weight of biofilm significantly (p < 0.05) increased; from 0.23 +/- 0.01 to 0.44 +/- 0.01 g. Similarly, the dry weight of the biofilm increased from 0.02 to 0.05 g. Significant reduction in pathogens (E. coli and feacal coliforms) by MPN technique (>80%) and in chemical parameters (decrease in COD, BOD5 of 73.32 and 69.94%) representing diminution of organic pollutants. Energy dispersive X-ray spectroscopy (EDS) of plastic revealed carbon and oxygen contents, further surface analysis of plastic by scanning electron microscopy (SEM) revealed emergence of profound bacterial growth on the surface. Fourier transform infrared (FTIR) spectroscopy conforms its biotransformation under aerobic conditions after 8 weeks. New peaks developed at the region 1050 and 969 cm(-1) indicating CO and CC bond formation."

According to the news editors, the research concluded: "Thus plastic with 6 weeks old aerobic biofilm (free of pathogens, max. weight, and OD, efficient COD & BOD removal ability) is suggested to be maintained in fixed biofilm reactors for wastewater treatment."

For more information on this research see: Bacterial succession and degradative changes by biofilm on plastic medium for wastewater treatment. Journal of Basic Microbiology, 2014;54(7):739-749. Journal of Basic Microbiology can be contacted at: Wiley-Blackwell, 111 River St, Hoboken 07030-5774, NJ, USA. (Wiley-Blackwell - www.wiley.com/; Journal of Basic Microbiology - onlinelibrary.wiley.com/journal/10.1002/(ISSN)1521-4028)

The news editors report that additional information may be obtained by contacting N. Khatoon, Quaid I Azam Univ, Dept. of Microbiol, Microbiol Res Lab, Islamabad 45320, Pakistan. Additional authors for this research include I. Naz, M.I. Ali, N. Ali, A. Jamal, A. Hameed and S. Ahmed (see also Life Science Research).

Keywords for this news article include: Asia, Pakistan, Islamabad, Life Science Research

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Life Science Weekly


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