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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Zhang, Ke-jia Lin, Tsair-Fuh Yen, Hung-Kai Chiu, Yi-Ting Gao, Nai-yun |
| Description | Country affiliation: China Author Affiliation: Zhang KJ ( State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai City 200092, China.) |
| Abstract | The effect of permanganate oxidation on the formation and degradation of wood odorant ß-cyclocitral in water was investigated. Oxidation experiments were conducted for ß-cyclocitral prepared from pure chemicals and extracted from Microcystis aeruginosa. The data were simulated with appropriate kinetic rate models. The formation and degradation of ß-cyclocitral during the oxidation of ß-carotene were also monitored and modeled. The degradation of ß-cyclocitral prepared from pure chemicals followed second-order kinetics with a rate constant of 91.7 ± 2.4M(-1)s(-1), and that of the ß-cyclocitral precursor, ß-carotene, followed first-order kinetics with a rate constant of 0.0054 ± 0.0004 min(-1). During the oxidation of ß-carotene, ß-cyclocitral was produced. The formation and degradation can both be simulated by first-order kinetics with respect to ß-carotene and ß-cyclocitral concentrations, respectively. The degradation rate of ß-cyclocitral produced from ß-carotene was found to be much slower than that for ß-cyclocitral obtained from pure chemicals, very likely due to a mass transfer limitation. The kinetic models were further employed to simulate the oxidation of ß-cyclocitral in the presence of ß-carotene and for ß-cyclocitral extracted from M. aeruginosa, respectively. The models well predict/fit the experimental data, with rate constants similar to other experiments, indicating that the models may be used for simulating the formation and degradation of ß-cyclocitral in water treatment systems. |
| ISSN | 03043894 |
| Volume Number | 194 |
| e-ISSN | 18733336 |
| Journal | Journal of Hazardous Materials |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2011-10-30 |
| Publisher Place | Netherlands |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Aldehydes Chemistry Diterpenes Manganese Compounds Oxides Wood Kinetics Microcystis Oxidation-reduction Beta Carotene Journal Article Research Support, Non-u.s. Gov't Discipline Environmental Science Discipline Environmental Chemistry |
| Content Type | Text |
| Resource Type | Article |
| Subject | Environmental Chemistry Pollution Waste Management and Disposal Health, Toxicology and Mutagenesis Environmental Engineering |
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