Study on the removal of Alachlor by Recycling Hand Warmer Waste through Fenton-like reaction
| Autor: | Pei-Shan Chiang, 蔣佩珊 |
|---|---|
| Rok vydání: | 2018 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 106 In view of technological advances, people start to use disposable Hand warmer. However, it leads to an increasing of iron-containing waste. Though hand warmer is harmless to the environment, it sill needs to be recycled. Therefore, it is supposed to recycle and reuse the iron-containing waste. This study bases on advanced oxidation treatment technology. Heterogeneous Fenton reaction can treat Alachlor of high toxicity endocrine disrupting chemicals. The catalyst is divided into core-shell zero-valent iron and Hand warmer recovery iron different treatment methods. Hand warmer is utilized to become Fe@Fe2O3 core shell nano-zero-valent iron, which compare with FeCl3•6H2O. Another direct use Hand warmer waste iron, which is divided into untreated iron(HWW), hydrochloric acid pickled iron(AHWW) and sodium borohydride reduced iron(RHWW). In this study explored Fenton-like reaction different treatment conditions (Amount of catalyst, concentration of oxidant, concentration of reducing agent, pH, etc.) on the degradation of Alachlor. The results show (1) Core-shell zero-valent iron optimal conditions was 0.1g/L catalyst, 2mM H2O2 and 0.3mM AA. Alachlor removal rate of Fe@Fe2O3 and R-Fe@Fe2O3 were 99.84% and 93.64%. The system is not affected by competitive ions and catalyst has reusability. (2) The AHWW of use directly Hand warmer waste iron is degradation of Alachlor better than the HWW and RHWW. The optimal conditions was 0.4 g/L catalyst, 2 mM H2O2 and 0.4 mM AA. The AHWW removal rate of Alachlor was 66.22% in the 60 min. The studies demonstrated that Hand warmer waste iron might be an economy and feasible way to removed pollutants for Alachlor. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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