Acute Toxicity of Hg, Cd, and Pb Towards Dominant Bacterial Strains of Sequencing Batch Reactor (Sbr)

Acute Toxicity of Hg, Cd, and Pb Towards Dominant Bacterial Strains of Sequencing Batch Reactor (Sbr) Publisher Pubmed

Zare MR^{1, 2, 3, 4} ; Amin MM^{2, 3, 4} ; Nikaeen M^{2, 3, 4} ; Bina B^{2, 3, 4} ; Rahmani A⁵ ; Hemmatiborji S⁶ ; Rahmani H⁷

Show Affiliations

1. Fasa University of Medical Sciences, Fasa, Iran
2. Department of Environmental Health Engineering, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran
3. Student Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
4. Environment Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
5. Department of Environmental Health Engineering, School of Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran
6. Department of Environmental Health Engineering, School of Public Health and Center for Water Quality Research (CWQR), Institute for Environmental Research (IER), Tehran University of Medical Sciences, Tehran, Iran
7. Department of Environmental Health Engineering, School of Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran

Source: Environmental Monitoring and Assessment Published:2015

Abstract

One of the most important factors that affect the operation efficiency of sequencing batch reactor (SBR) technology is bacterial viability and biomass activity. The acute toxicity of three heavy metals to four dominant strains of sequencing batch reactor (Pseudomonas, Aeromonas, Enterobacter, and Bacillus) was investigated using a resazurin bioassay. After exposing the bacterial strains to soluble compound of Hg, Cd, and Pb, at more than five selected concentrations, the median effective concentration (EC50) and the mortality rate values were calculated. Large differences were observed in sensitivities of the four bacterial strains to the metals. Pseudomonas showed the highest sensitivity for Cd (EC50 = 0.06 μmol/L) and Hg (EC50 = 11.75 μmol/L), while Aeromonas showed the highest sensitivity for Pb (EC50 = 48.27 μmol/L). Considering the EC50 test results, it was concluded that Pseudomonas and Aeromonas are excellent and reliable bioindicators for assessing the toxicity of water and wastewaters polluted by Cd, Hg, and Pb. The rapidity (30 min) and simplicity of the resazurin bioassay procedure enable this enzymatic test to be used in toxicity assessment of small and decentralized wastewater treatment plants (WWTPs). © 2015, Springer International Publishing Switzerland.

Style	Citing Format
MLA	Zare MR, et al.. "Acute Toxicity of Hg, Cd, and Pb Towards Dominant Bacterial Strains of Sequencing Batch Reactor (Sbr)." Environmental Monitoring and Assessment, vol. 187, no. 5, 2015, pp. 1-8.
APA	Zare MR, Amin MM, Nikaeen M, Bina B, Rahmani A, Hemmatiborji S, Rahmani H (2015). Acute Toxicity of Hg, Cd, and Pb Towards Dominant Bacterial Strains of Sequencing Batch Reactor (Sbr). Environmental Monitoring and Assessment, 187(5), 1-8.
Chicago	Zare MR, Amin MM, Nikaeen M, Bina B, Rahmani A, Hemmatiborji S, Rahmani H. "Acute Toxicity of Hg, Cd, and Pb Towards Dominant Bacterial Strains of Sequencing Batch Reactor (Sbr)." Environmental Monitoring and Assessment 187, no. 5 (2015): 1-8.
Harvard	Zare MR et al. (2015) 'Acute Toxicity of Hg, Cd, and Pb Towards Dominant Bacterial Strains of Sequencing Batch Reactor (Sbr)', Environmental Monitoring and Assessment, 187(5), pp. 1-8.
Vancouver	Zare MR, Amin MM, Nikaeen M, Bina B, Rahmani A, Hemmatiborji S, et al.. Acute Toxicity of Hg, Cd, and Pb Towards Dominant Bacterial Strains of Sequencing Batch Reactor (Sbr). Environmental Monitoring and Assessment. 2015;187(5):1-8.
BibTex	@article{ author = {Zare MR and Amin MM and Nikaeen M and Bina B and Rahmani A and Hemmatiborji S and Rahmani H}, title = {Acute Toxicity of Hg, Cd, and Pb Towards Dominant Bacterial Strains of Sequencing Batch Reactor (Sbr)}, journal = {Environmental Monitoring and Assessment}, volume = {187}, number = {5}, pages = {1-8}, year = {2015} }
RIS	TY - JOUR AU - Zare MR AU - Amin MM AU - Nikaeen M AU - Bina B AU - Rahmani A AU - Hemmatiborji S AU - Rahmani H TI - Acute Toxicity of Hg, Cd, and Pb Towards Dominant Bacterial Strains of Sequencing Batch Reactor (Sbr) JO - Environmental Monitoring and Assessment VL - 187 IS - 5 SP - 1 EP - 8 PY - 2015 ER -

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Abstract