Assessment of pollution caused by tannery-waste and its impact on aquatic bacterial community in Hajaribag, Dhaka
ORIGINAL ARTICLE
Stamford Journal of Microbiology, December 2012.
ISSN: 2074-5346
Vol. 2, Issue 1
Assessment of pollution caused by tannery-waste and its impact on aquatic bacterial community in Hajaribag, Dhaka
Mahbubul Hasan Siddiqee,1‡ Md. Saiful Islam2 and M. Majibur Rahman3
assay
1
Microbiology Program, Department of Mathematics and Natural Sciences, BRAC University, Dhaka-1212, Bangladesh;
Department of Microbiology, Stamford University Bangladesh, Dhaka-1217, Bangladesh; 3Department of Microbiology, University of Dhaka, Dhaka-1000, Bangladesh
2
Received 10 July 2012/Accepted 01 October 2012
The leather industries of Hajaribag area, Dhaka city, produce hundreds of metric tons of inorganic and organic wastes which pollute the adjacent water bodies including the river Buriganga. In the present study, a total of 18 water samples from 6 different points along the effluent distribution route were examined. Along with the dissolved oxygen concentration (DO), acidity (pH), conductivity, and concentration of total dissolved solute (TDS), concentration of the samples were measured followed by the enumeration of total heterotrophic bacteria. Pure cultures of bacterial isolates were obtained after a brief enrichment and the isolates were biochemically identified up to genus level. The physicochemical test readings showed significant fluctuations in different points indicating radically heterogeneous conditions throughout the distribution system. The total count varied from 1.2x102 to
6.3x103 cfu/ml. Different bacterial genera including Alcaligenes spp., Bacillus spp., Corynebacterium spp., Escherichia spp., Micrococcus spp., Pseudomonas spp., Shigella spp., Staphylococcus spp. and
Streptococcus spp. were isolated from the collected samples. The bacterial community was found to be diversified where the concentration of tannery waste was less; thereby it was assumed that the tannery waste might affect the aquatic bacterial community
Stamford Journal of Microbiology, December 2012.
ISSN: 2074-5346
Vol. 2, Issue 1
Assessment of pollution caused by tannery-waste and its impact on aquatic bacterial community in Hajaribag, Dhaka
Mahbubul Hasan Siddiqee,1‡ Md. Saiful Islam2 and M. Majibur Rahman3
assay
1
Microbiology Program, Department of Mathematics and Natural Sciences, BRAC University, Dhaka-1212, Bangladesh;
Department of Microbiology, Stamford University Bangladesh, Dhaka-1217, Bangladesh; 3Department of Microbiology, University of Dhaka, Dhaka-1000, Bangladesh
2
Received 10 July 2012/Accepted 01 October 2012
The leather industries of Hajaribag area, Dhaka city, produce hundreds of metric tons of inorganic and organic wastes which pollute the adjacent water bodies including the river Buriganga. In the present study, a total of 18 water samples from 6 different points along the effluent distribution route were examined. Along with the dissolved oxygen concentration (DO), acidity (pH), conductivity, and concentration of total dissolved solute (TDS), concentration of the samples were measured followed by the enumeration of total heterotrophic bacteria. Pure cultures of bacterial isolates were obtained after a brief enrichment and the isolates were biochemically identified up to genus level. The physicochemical test readings showed significant fluctuations in different points indicating radically heterogeneous conditions throughout the distribution system. The total count varied from 1.2x102 to
6.3x103 cfu/ml. Different bacterial genera including Alcaligenes spp., Bacillus spp., Corynebacterium spp., Escherichia spp., Micrococcus spp., Pseudomonas spp., Shigella spp., Staphylococcus spp. and
Streptococcus spp. were isolated from the collected samples. The bacterial community was found to be diversified where the concentration of tannery waste was less; thereby it was assumed that the tannery waste might affect the aquatic bacterial community
References: Lelissa, S. 2007. Developing water quality index for tannery wastewaters:A tool for environmental pollution monitoring Seyoum, L., A. Fassil, and D. Gunnel. 2003. Characterization of tannery wastewater and assessment of downstream pollution profiles along Modjo Cooman, K., et al. 2003. Tannery wastewater characterization and toxicity effects on Daphnia spp Tunay, O., D. Orhon, and I. Kabdasli. 1994. Pretreatment requirements for leather tanning industry wastewaters Song, Z., C. J. Williams, and R. J. Edyvean. 2000. Sedimentation of tannery wastewater Mene´ndez C. and M. Dı´az. 1998. Tannery wastewater treatment (in Spanish) Fantahun, W. 2005. Evaluation of nitrogen removal rates from abattoir wastewater in a pilot predenitrification-nitrification activated sludge Hoshino, T., et al. 2005. Molocular analysis of microbial population transition associated with the start of denitrification in a wastewater treatment James, B. R. and R. J. Bartl. 1983a. Behaviour of chromium in soils: V Fate of organically complexed Cr(llI) added to soil James, B. R. and R. J. Bartlett. 1983 b. Behaviour of chromium in soils: VI James, B. R. and R. J. Bartlett. 1983c. Behaviour of chromium in soils: VII Naidu, R., et al. 2000. Bioavailability, definition and analytical techniques