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Journal of Environmental Science and Technology
  Year: 2011 | Volume: 4 | Issue: 6 | Page No.: 621-629
DOI: 10.3923/jest.2011.621.629
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Removal of Pathogens during Vermi-Stabilization

Rahul Kumar and Shweta

Earthworm promises to provide cheaper solutions to several social, economic and environmental problems plaguing the human society. Their body work as ‘bio-filter’ and they can ‘purify’ and also ‘disinfect’ and ‘detoxify’ the solid wastes. They are both protective and productive for environment and society. The microbiomics of gut worm (Eisenia foetida Savigny) and their association with vermistabilization was studied to determine the quantification of microbial groups in reactors. Worms were reared in three reactors viz. rice, straw, sugarcane trash, kitchen waste along with cow dung in 2:1 ratio for seventy days. The microbial load (Pseudomonas sp., Streptosporangium sp., Salmonella sp., Shigella sp. Flexibacter sp. and Escherichia sp.) in gut and cast, total nitrogen, potassium, organic carbon in reactors was determined, periodically. The microbial population in gut and reactors were determined using pour plate method The microbiomics of gut and casting revealed the removal of Salmonella (12-17x103±0.02 to 0-4x103±0.05 cfu g-1), Shigella (3-5x103±0.04 to 0.00±0.08 cfu g-1), Flexibacter (6-10x104±0.05 to 00.0±0.05 cfu g-1), Escherichia (8x102±0.02 to 0.00-1x101±0.05 cfu g-1) during vermistabilization, indicating the selective nature of feeding of earthworms which helps in the removal of pathogens as they enter in food chain of worms. However, increase in the number of Pseudomonas (13-16x104±0.05 to 18-22x105±1.0 cfu g-1), Streptosporangium (12-14x104±0.05 to 18-20x105±1.0 cfu g-1) seems to be responsible for reduction of pathogens and mineralization of other organics during the waste degradation process.
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  •    Management of Water Hyacinth (Eichhornia crassipes) and Grass Clippings Through Biodung Mediated Vermicomposting
  •    Enrichment of Biogas Slurry Vermicompost with Azotobacter chroococcum and Bacillus megaterium
  •    An Investigation into the Anti-microbial and Anti-fungal Properties of Earthworm Powder Obtained from Eisenia fetida
  •    Identification and Classification of Earthworm Species in Guyana
  •    Worm Powered Environmental Biotechnology in Organic Waste Management
  •    Diversity of Bacteria and Fungi in the Gut and Cast of the Tropical Earthworm Glyphodrillus tuberosus Isolated from Conventional and Organic Rice Fields
How to cite this article:

Rahul Kumar and Shweta , 2011. Removal of Pathogens during Vermi-Stabilization. Journal of Environmental Science and Technology, 4: 621-629.

DOI: 10.3923/jest.2011.621.629






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