循環農業：農業廢棄物高價值化【環境工程學系/林坤儀特聘教授】
| 論文篇名 | 英文：Activation of persulfate by graphite supported CeO2 for isoniazid degradation 中文：石墨負載的CeO2活化過硫酸鹽以異煙鹼醯降解 |
| 期刊名稱 | SEPARATION AND PURIFICATION TECHNOLOGY |
| 發表年份,卷數,起迄頁數 | 2020,250, 117197 |
| 作者 | Qian, Ruyi; Shen, Tongdong; Yang, Qiangqiang; Lin, Kun-Yi Andrew(林坤儀)*; Tong, Shaoping* |
| DOI | 10.1016/j.seppur.2020.117197 |
| 中文摘要 | 通過浸漬法製備了石墨氈（GF）負載的氧化鈰（CeO 2）複合材料，並用於活性過硫酸鹽（PS）降解異菸鹼醯（INH）。通過X射線衍射，X射線光電子能譜和掃描電子顯微鏡對催化劑的結構和形貌進行了表徵。在CeO 2 / GF / PS系統中研究了一些關鍵參數，包括初始PS濃度，初始pH值，催化劑用量，反應溫度和無機離子對INH降解的影響。結果發現，在控制條件下（1.2 g / L CeO 2），在10分鐘內可去除94.39％的INH和89.9％的TOC。/GF，0.25 g / L PS，初始pH值為6.8，溫度為25℃）。通過液相色譜-質譜和離子色譜法鑑定了INH的降解中間體，並提出了可能的降解途徑。自由基競爭試驗表明，羥基自由基（自由基點OH），硫酸根（SO 4 自由基點- ），超氧（自由基點ö 2 - ）和單線態氧（1 Ò 2共存以CeO）2 / GF / PS系統，其中自由基點OH是在佔優勢一。循環實驗表明CeO 2 / GF是用於PS活化的極穩定的催化劑。 |
| 英文摘要 | Graphite felt (GF) supported cerium oxide (CeO2) composite was prepared by the impregnation method and used to active persulfate (PS) for degradation of isoniazid (INH). The structure and morphology of the catalyst were characterized by X-ray diffraction, X-ray photoelectron spectrum and scanning electron microscope. The effects of some key parameters including initial PS concentration, initial pH value, catalyst dosage, reaction temperature and inorganic ions on INH degradation were investigated in CeO2/GF/PS system. It was found that 94.39% of INH and 89.9% of TOC could be removed within 10 min under the controlled conditions (1.2 g/L CeO2/GF, 0.25 g/L PS, initial pH at 6.8 and temperature at 25 ℃). The degradation intermediates of INH were identified by liquid chromatography-mass spectrometry and ion chromatography, and the possible degradation pathway was also proposed. The radical competition tests indicated that hydroxyl radical (radical dotOH), sulfate radical (SO4radical dot−), superoxide (radical dotO2−) and singlet oxygen (1O2) coexisted in CeO2/GF/PS system, in which radical dotOH was the predominated one. The recycling experiment showed the CeO2/GF was an excellently stable catalyst for activation of PS. |
