Observation of the pH-Induced Hormesis for the LDH Cytotoxicity Test of MSWI Baghouse Ash Extract
Publication: Journal of Hazardous, Toxic, and Radioactive Waste
Volume 17, Issue 2
Abstract
The environmental impact of a toxicant can be assessed using many biological toxicity indexes. Many reports describe the ecotoxicity by E. Coli and lactate dehydrogenase (LDH) cytotoxicity of ash wastes obtained from municipal solid waste incineration (MSWI) ash wastes. The experimental cytotoxicity test of MSWI ash waste extract sometimes showed a negative or greater than 100% (hormesis phenomenon) value using Vero cells. Parallel experiments using E. Coli and Vero cells were conducted for serious MSWI ash waste extracts with different pH values. In this paper, the pH-induced hormesis phenomenon was confirmed to be observed on the LDH cytotoxicity test for MSWI ash extract at acidic condition (). The application of this study is that E. Coli can be used as an online biosensor for MSWI ash wastewater generated from an ash recycling system, and the hormesis effect shall be considered in the cytotoxicity explanation of such MSWI ash samples.
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Acknowledgments
The authors thank the National Science Council of the Republic of China, who provided financial support of this research under contract number NSC 98-2221-E-020-004.
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Information & Authors
Information
Published In
Journal of Hazardous, Toxic, and Radioactive Waste
Volume 17 • Issue 2 • April 2013
Pages: 134 - 139
Copyright
© 2013 American Society of Civil Engineers.
History
Received: Jul 22, 2012
Accepted: Oct 5, 2012
Published online: Oct 8, 2012
Published in print: Apr 1, 2013
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