Abstract
Tanning industries are one of tne main economic activities in Bangladesh. It has been well documented that wastewater discharged from tanneries without appropriate treatment results in detrimental effects on the ecosystem. No ecotoxicity evaluation of any aquatic environment in Bangladesh has been conducted so far. In this study, a battery of toxicity bioassays and chemical analysis were carried out from water samples obtained from three sampling points: upstream from discharging site on River Buriganga (S 1), raw wastewater effluent (S2), and downstream the discharging sluice gate (S3), In the Hazaribagh tannery area of Dhaka City, Bangladesh. While S1 and S3 water samples did not show significant toxicity in the bioassays tested, S2 exhibited high acute toxicity to the bacterium Vibrio fischeri (15-min Microtox®test, EC50 =9.8%), the higher plant Lactuca sativa (5-day root elongation inhibition test, EC10 = 14.2%), and the microcrustacean Daphnia magna (24-hour mobility test, ECx = 31.5%). The results suggested that the raw wastewater effluent had detrimental effects on broad spectrum of organisms In the aquatic ecosystem and bacterium was the most sensitive. The chemical analysis revealed that sample S2 contained an extremely high concentration of chromium (47 g l-1). Additionally, microbiological analysis Indicated that the sampling area is impacted by fecal pollution, increasing the environmental health risk for its inhabitants.
| Original language | English |
|---|---|
| Pages (from-to) | 471-475 |
| Number of pages | 5 |
| Journal | Journal of Environmental Biology |
| Volume | 31 |
| Issue number | 4 |
| Publication status | Published - Jul 2010 |
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Keywords
- Buriganga river
- Chromium tanning
- Ecotoxicity
ASJC Scopus subject areas
- Health, Toxicology and Mutagenesis
- Environmental Engineering
- Toxicology
Cite this
Ecotoxicological characterization of tannery wastewater in Dhaka, Bangladesh. / Arias-Barreiro, C. R.; Nishizak, H.; Okubo, Kenji; Aoyama, I.; Mori, Izumi.
In: Journal of Environmental Biology, Vol. 31, No. 4, 07.2010, p. 471-475.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Ecotoxicological characterization of tannery wastewater in Dhaka, Bangladesh
AU - Arias-Barreiro, C. R.
AU - Nishizak, H.
AU - Okubo, Kenji
AU - Aoyama, I.
AU - Mori, Izumi
PY - 2010/7
Y1 - 2010/7
N2 - Tanning industries are one of tne main economic activities in Bangladesh. It has been well documented that wastewater discharged from tanneries without appropriate treatment results in detrimental effects on the ecosystem. No ecotoxicity evaluation of any aquatic environment in Bangladesh has been conducted so far. In this study, a battery of toxicity bioassays and chemical analysis were carried out from water samples obtained from three sampling points: upstream from discharging site on River Buriganga (S 1), raw wastewater effluent (S2), and downstream the discharging sluice gate (S3), In the Hazaribagh tannery area of Dhaka City, Bangladesh. While S1 and S3 water samples did not show significant toxicity in the bioassays tested, S2 exhibited high acute toxicity to the bacterium Vibrio fischeri (15-min Microtox®test, EC50 =9.8%), the higher plant Lactuca sativa (5-day root elongation inhibition test, EC10 = 14.2%), and the microcrustacean Daphnia magna (24-hour mobility test, ECx = 31.5%). The results suggested that the raw wastewater effluent had detrimental effects on broad spectrum of organisms In the aquatic ecosystem and bacterium was the most sensitive. The chemical analysis revealed that sample S2 contained an extremely high concentration of chromium (47 g l-1). Additionally, microbiological analysis Indicated that the sampling area is impacted by fecal pollution, increasing the environmental health risk for its inhabitants.
AB - Tanning industries are one of tne main economic activities in Bangladesh. It has been well documented that wastewater discharged from tanneries without appropriate treatment results in detrimental effects on the ecosystem. No ecotoxicity evaluation of any aquatic environment in Bangladesh has been conducted so far. In this study, a battery of toxicity bioassays and chemical analysis were carried out from water samples obtained from three sampling points: upstream from discharging site on River Buriganga (S 1), raw wastewater effluent (S2), and downstream the discharging sluice gate (S3), In the Hazaribagh tannery area of Dhaka City, Bangladesh. While S1 and S3 water samples did not show significant toxicity in the bioassays tested, S2 exhibited high acute toxicity to the bacterium Vibrio fischeri (15-min Microtox®test, EC50 =9.8%), the higher plant Lactuca sativa (5-day root elongation inhibition test, EC10 = 14.2%), and the microcrustacean Daphnia magna (24-hour mobility test, ECx = 31.5%). The results suggested that the raw wastewater effluent had detrimental effects on broad spectrum of organisms In the aquatic ecosystem and bacterium was the most sensitive. The chemical analysis revealed that sample S2 contained an extremely high concentration of chromium (47 g l-1). Additionally, microbiological analysis Indicated that the sampling area is impacted by fecal pollution, increasing the environmental health risk for its inhabitants.
KW - Buriganga river
KW - Chromium tanning
KW - Ecotoxicity
UR - http://www.scopus.com/inward/record.url?scp=77954573827&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77954573827&partnerID=8YFLogxK
M3 - Article
C2 - 21186722
AN - SCOPUS:77954573827
VL - 31
SP - 471
EP - 475
JO - Journal of Environmental Biology
JF - Journal of Environmental Biology
SN - 0254-8704
IS - 4
ER -