PUBLICATION
Evaluation of the detoxication efficiencies for acrylonitrile wastewater treated by a combined anaerobic oxic-aerobic biological fluidized tank (A/O-ABFT) process: Acute toxicity and zebrafish embryo toxicity
- Authors
- Na, C., Zhang, Y., Deng, M., Quan, X., Chen, S., Zhang, Y.
- ID
- ZDB-PUB-160403-6
- Date
- 2016
- Source
- Chemosphere 154: 1-7 (Journal)
- Registered Authors
- Zhang, Ying
- Keywords
- Acrylonitrile wastewater, Danio rerio, Daphnia magna, GC-MS, Toxicant, Upgrade
- MeSH Terms
-
- Acrylonitrile/isolation & purification*
- Acrylonitrile/metabolism
- Acrylonitrile/toxicity*
- Aerobiosis
- Anaerobiosis
- Animals
- Daphnia/drug effects
- Embryo, Nonmammalian/drug effects*
- Waste Management*
- Wastewater/chemistry*
- Zebrafish/embryology*
- PubMed
- 27037768 Full text @ Chemosphere
Citation
Na, C., Zhang, Y., Deng, M., Quan, X., Chen, S., Zhang, Y. (2016) Evaluation of the detoxication efficiencies for acrylonitrile wastewater treated by a combined anaerobic oxic-aerobic biological fluidized tank (A/O-ABFT) process: Acute toxicity and zebrafish embryo toxicity. Chemosphere. 154:1-7.
Abstract
Acrylonitrile (ACN) wastewater generated during ACN production has been reported to be toxic to many aquatic organisms. However, few studies have evaluated toxicity removal of ACN wastewater during and after the treatment process. In this study, the detoxication ability of an ACN wastewater treatment plant (WWTP) was evaluated using Daphnia magna, Danio rerio and zebrafish embryo. This ACN WWTP has a combined anaerobic oxic-aerobic biological fluidized tank (A/O-ABFT) process upgraded from the traditional anaerobic oxic (A/O) process. Moreover, the potential toxicants of the ACN wastewaters were identified by gas chromatography-mass spectrometry (GC-MS). The raw ACN wastewater showed high acute and embryo toxicity. 3-Cyanopyridine, succinonitrile and a series of nitriles were detected as the toxic contributors of ACN wastewater. The A/O process was effective for the acute and embryo toxicity removal, as well as the organic toxicants. However, the A/O effluent still showed acute and embryo toxicity which was attributed by the undegraded and the newly generated toxicants during the A/O process. The residual acute and embryo toxicity as well as the organic toxicants in the A/O effluent were further reduced after going through the downstream ABFT process system. The final effluent displayed no significant acute and embryo toxicity, and less organic toxicants were detected in the final effluent. The upgrade of this ACN WWTP results in the improved removal efficiencies for acute and embryo toxicity, as well as the organic toxicants.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping