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研究生:汪肯迪
研究生(外文):Mwangi JohnKennedy
論文名稱:多溴聯苯醚於電弧爐系統中之分佈
論文名稱(外文):Distribution of Polybrominated Diphenyl Ethers in the Electric Arc Furnace System
指導教授:李文智李文智引用關係
指導教授(外文):Wen-Jhy Lee
學位類別:碩士
校院名稱:國立成功大學
系所名稱:環境工程學系碩博士班
學門:工程學門
學類:環境工程學類
論文種類:學術論文
論文出版年:2012
畢業學年度:100
語文別:英文
論文頁數:90
中文關鍵詞:電弧爐多溴聯苯醚質量分布去除率
外文關鍵詞:electric arc furnacePBDEsmass distributiondestruction removal efficiency
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本研究調查煉鋼電弧爐製程中的多溴二苯醚於各進料及排出介質中之含量。採樣之樣品包括各進料、電弧爐室級重力沉降室之底渣及各空氣汙染防制單元如袋濾式集塵器之飛灰以及煙道氣。採樣之樣品以高解析氣相層析質譜儀進行分析,並針對三十支多溴二苯醚之同族物加以定量。
結果顯示,集塵灰中之多溴二苯醚含量29.3 ng/g遠較其他進料中之濃度為高,且其所含總量在各進料中亦屬最大。集塵灰中之多溴二苯醚佔每日總進料4.40 g中的3.99 g,其餘如:氧化鐵屑、焦炭、碳粉、接著劑、及造渣劑中所含之多溴二苯醚分別為每天0.372、 0.00824、 0.0208、 0.00147、 及0.00370克。
再者,本研究估算所得,電弧爐系統每日總排放量為0.0652g,其中以經由煙道排放之貢獻最大。如同其他冶金製程一樣,本研究各進料及排放介質中,仍以BDE 209為主要同族物。
此外,整體的質量平衡顯示多溴二苯醚可能於系統中被摧毀,經計算結果本系統具可觀之97.8%多溴二苯醚之破壞去除率,同時,其具有相對低的排放係數,即1.266 mg/噸鋼。

The level of PBDEs in the input media and output media of a case study electric arc furnace, which is a representative of a metallurgical process, was established. Samples were obtained from the feeding materials (input media), the bottom ashes collected from the electric arc furnace, gravity settling chamber and bag filters, and the stack flue gases. From these samples the contents of thirty (30) PBDEs congeners were determined by using high resolution gas chromatography / mass spectrometer (HRGC/HRMS). The results indicate that the bag filter ash had the highest content of PBDE and also contributed the highest amount of PBDE among the feeding materials. And the PBDE level in the bag filter ash was determined to be 3.99 g/day out of a total of 4.40 g/day, while oxidized iron dust, coke, carbon powder, binder and slag-forming agent reported 0.372, 0.00824, 0.0208, and 0.00147, 0.00370 grams per day, respectively. In addition, the estimated PBDE levels in the output media was approximately 0.0652g/day with the highest contribution coming from the stack flue gases. In addition, as the characteristic of all metallurgical process in the previous studies, BDE 209 was the dominant congener in this study, too. Moreover, the process studied had a destruction removal efficiency of about 97.8 % and an emission coefficient of approximately 1.266 mg/ton of product.
Abstract ii
Acknowledgements iv
List of table captions viii
List of figure captions ix
Chapter 1 INTRODUCTION 1
Chapter 2 LITERATURE REVIEW 5
2-1 Concern over PBDEs 5
2-2 Physical and chemical properties of PBDEs 7
2-3 PBDEs in the Environment 9
2-3-1 Life cycle of PBDEs 9
2-4 PBDES in different matrices from various studies 11
2-5 Electric Arc Furnace 15
2-6 Operation of Electric Arc 18
2-7 Electric Arc Furnace as a Source of Dioxins 20
Chapter 3 EXPERIMENTAL SECTION 22
3-1 Framework 22
3-2 Sampling management and location 24
3-3 Sampling and Analysis Method 27
3-3-1 Sampling Procedures 27
3-3-2 Preparation of Filter and Cartridge 28
3-3-3 Samples preparation 31
3-3-4 Instrumental analysis 35
3-3-5 Quality assurance/Quality control 35
3-3-6 Mass Balance of the PBDE Content between the Feeding Materials and the Emissions 40
Chapter 4 RESULTS AND DISCUSSION 41
4-1 The Amount and Characterization of PBDEs in the Feeding Materials 41
4-2 Mass Distribution of PBDEs in the Feeding Materials 50
4-3 PBDE Content in the Ashes of Air Pollution Control Devices 53
4-4 PBDE Concentration in the Stack Flue Gases 61
4-5 Mass Distribution of PBDEs in the Output Media 68
4-6 PBDE Removal Efficiency 71
Chapter 5 CONCLUSIONS AND SUGGESTIONS 75
5-1 Conclusions 75
5-2 Suggestions 78
Chapter 6 REFERENCES 80
APPENDIX 88

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