scholarly journals Removal of Chromium (VI) by Bacillus subtilis Isolated from East Calcutta Wetlands, West Bengal, India

2014 ◽  
pp. 7-10 ◽  
Author(s):  
Srabanti Basu ◽  
Monikankana Dasgupta ◽  
Bhaswati Chakraborty
Keyword(s):  
Bacillus Subtilis ◽  
West Bengal ◽  
Chromium Vi ◽  
East Calcutta Wetlands

scholarly journals BIOREMEDIATION OF CHROMIUM (VI) BY A MICROBIAL CONSORTIUM ISOLATED FROM TANNERY EFFLUENTS AND THEIR POTENTIAL INDUSTRIAL APPLICATION

2021 ◽  
Vol 29 (4) ◽  
pp. 418-429
Author(s):  
Arghyadeep Bhattacharjee ◽  
Rajarshi Chaudhuri ◽  
Priyanshu Pandey ◽  
Arup Kumar Mitra
Keyword(s):  
West Bengal ◽  
Microbial Consortium ◽  
Effective Strain ◽  
Open Water ◽  
Inorganic Contaminants ◽  
Huge Amount ◽  
Tannery Effluents ◽  
Chromium Vi ◽  
Rrna Sequencing ◽  
Brevibacillus Brevis

West Bengal has several leather industries and as such huge amount of leather are processed every year. The tannery effluents are discharged into the land and open water causing soil and water pollution respectively. Chromium is one of the most toxic inorganic contaminants which is well known for its carcinogenicity. Thus, our study focuses on investigating the bioremediation potential of common microflora isolated from tannery wastewater. In our study, Isolate 1 has the highest ability to reduce chromium (Cr6+) as compared to others. Isolate 4 has the highest protease, lipase and leather degradation activities. Isolate 1 shows the maximum keratinase activity making it an effective strain for keratinase production. Also, it has been found that pH 8 and temperature 40 °C was most suitable for keratinase production. Owing to the multidimensional ability of these two isolates, they were identified by 16S rRNA sequencing and it reveals that Isolate 1 and Isolate 4 belong to Bacillus cereus F4810/72 and Brevibacillus brevis F4810/72 respectively. Thus, this study establishes the role and efficiencies of these microorganisms in combatting pollution, particularly in the water bodies in which harmful chemicals leak regularly owing to improper waste management by various industries.

scholarly journals Butterfly (Lepidoptera: Rhopalocera) Fauna of East Calcutta Wetlands, West Bengal, India

Check List ◽  
2011 ◽  
Vol 7 (6) ◽  
pp. 700 ◽  
Author(s):  
Soumyajit Chowdhury ◽  
Rahi Soren
Keyword(s):  
West Bengal ◽  
Anthropogenic Activities ◽  
Ecological Indicators ◽  
Traditional Practices ◽  
Ramsar Site ◽  
Ecosystem Integrity ◽  
Wetland Biodiversity ◽  
The City ◽  
Diversity Study ◽  
East Calcutta Wetlands

East Calcutta Wetlands (ECW), lying east of the city of Kolkata (formerly Calcutta), West Bengal in India, demonstrates the usage of city sewage for traditional practices of fisheries and agriculture. As a Ramsar Site, the wetland demands exploration of its bioresources for better understanding and management of the ecosystem operating therein. Butterflies (Lepidoptera: Rhopalocera) being potent pollinators and ecological indicators, are examined in the present study. The diversity study, conducted for two consecutive years (Jan. 2007-Nov. 2009) in all the three seasons (pre-monsoon, monsoon and post-monsoon), revealed seventy-four species. As butterflies depend on preferred host and nectar plants during their larval and adult stages respectively, the lack of these sources in some parts of ECW indicate degraded habitats with low species richness. Ongoing unplanned anthropogenic activities like habitat modifications (conversion of wetlands to agricultural lands) are resulting in the loss of wetland biodiversity and hence ecosystem integrity in ECW.

STUDIES ON THE REC EFFECTS OF CHROMIUM(VI) COMPOUNDS IN BACILLUS SUBTILIS

1997 ◽  
Vol 16 (1) ◽  
pp. 43-50
Author(s):  
R. C. S Obti ◽  
M. Kaushal ◽  
A. Kaushal
Keyword(s):  
Bacillus Subtilis ◽  
Chromium Vi

EAST CALCUTTA WETLANDS AS A SINK OF INDUSTRIAL HEAVY METALS: A PIXE STUDY

2007 ◽  
Vol 17 (03n04) ◽  
pp. 129-142 ◽  
Author(s):  
S. CHATTERJEE ◽  
B. CHATTOPADHYAY ◽  
S. K. MUKHOPADHYAY ◽  
B. MOHANTA ◽  
M. SUDARSHAN ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Water Hyacinth ◽  
West Bengal ◽  
Industrial Effluents ◽  
Industrial Wastes ◽  
Tannery Effluent ◽  
Elemental Distribution ◽  
Natural Ecosystems ◽  
Metal Contaminant ◽  
East Calcutta Wetlands

Industrial wastes are considered as critical factors for disturbing natural ecosystems. The East Calcutta Wetlands, a Ramsar site in West Bengal, India, receives composite industrial effluents, subsequently bringing various kinds of heavy metals throughout the year. This wastewater is being utilized by the local people for pisciculture. The present investigation was carried out to study 1) elemental distribution various components of the wetland and 2) potentiality of water hyacinth in metal amelioration. Water and sediments were collected from four different spots along a wastewater-carrying canal having a stretch of 40km from the source point to the final confluence with river and from the wastewater fed fishpond. Fish (three common carps viz. Labeo rohita, Cirrhinus mrigala and Oreochromis niloticus) and water hyacinth were collected from fishpond mentioned above. Samples were analyzed by PIXE with 3MeV tandem Pelletron. Cr , which is a known metal contaminant of tannery effluent, was detected along with S , K , Ca , Ti , V , Mn , Fe , Ni , Cu , Zn , As , Br , Rb , Sr , Zr . Variable concentrations of some elements like Ca , Fe , Zn in different fish organs was noted in the experiment. Accumulation of Cr , Cu from the water bodies by water hyacinth suggesting their crucial role in heavy metal amelioration.

Biosorption of chromium(VI) using Bacillus subtilis SS-1 isolated from soil samples of electroplating industry

2013 ◽  
Vol 16 (2) ◽  
pp. 405-413 ◽  
Author(s):  
C. Sukumar ◽  
V. Janaki ◽  
Seralathan Kamala-Kannan ◽  
K. Shanthi
Keyword(s):  
Bacillus Subtilis ◽  
Soil Samples ◽  
Chromium Vi

Use of Antibody to aid Visualization of Protein at the Termini of Bacteriophage Ø29 DNA

1980 ◽  
Vol 38 ◽  
pp. 540-541
Author(s):  
Dwight Anderson ◽  
Charlene Peterson ◽  
Gursaran Notani ◽  
Bernard Reilly
Keyword(s):  
Electron Microscopy ◽  
Bacillus Subtilis ◽  
Dna Synthesis ◽  
Restriction Endonuclease ◽  
Protein Complex ◽  
Protein Product ◽  
Viral Dna ◽  
Small Proteins ◽  
Antibody Labeling ◽  
Subtilis Bacteriophage

The protein product of cistron 3 of Bacillus subtilis bacteriophage Ø29 is essential for viral DNA synthesis and is covalently bound to the 5’-termini of the Ø29 DNA. When the DNA-protein complex is cleaved with a restriction endonuclease, the protein is bound to the two terminal fragments. The 28,000 dalton protein can be visualized by electron microscopy as a small dot and often is seen only when two ends are in apposition as in multimers or in glutaraldehyde-fixed aggregates. We sought to improve the visibility of these small proteins by use of antibody labeling.

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