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研究生:黃麗玲
研究生(外文):Li-Ling Huang
論文名稱:苯甲酸在銅改質活性碳上之吸附與脫附
論文名稱(外文):Adsorption and desorption of benzoic acid with copper-modified activated carbon
指導教授:陳嘉明陳嘉明引用關係
指導教授(外文):Jia-Ming Chen
口試委員:陳嘉明
口試委員(外文):Jia-Ming Chen
口試日期:2015-07-29
學位類別:碩士
校院名稱:大同大學
系所名稱:化學工程學系(所)
學門:工程學門
學類:化學工程學類
論文種類:學術論文
論文出版年:2015
畢業學年度:103
語文別:中文
論文頁數:82
中文關鍵詞:苯甲酸吸附活性碳脫附甲醇
外文關鍵詞:DesorptionBenzoic acidAdsorptionActivated carbonMethanol
相關次數:
  • 被引用被引用:3
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  • 下載下載:43
  • 收藏至我的研究室書目清單書目收藏:0
因為近年來工業的蓬勃發展,許多有機溶劑與化學合成品大量地被使用,其中純對苯二甲酸(簡稱PTA)主要被用於生產聚酯纖維,且被廣泛的應用於石化產品上,其需求量主要集中在亞洲地區,因此PTA製程排放的廢水隨著需求量的提升而增加。在PTA製程廢水中含有大量的有機酸,除了會對生態環境汙染外,也對人體有害,本研究目的為利用改質後的活性碳來吸附製程中的副產物-苯甲酸,並利用甲醇脫附苯甲酸達到回收的效用,依據文獻中銅改質活性碳可與有機物形成錯合物,增加活性碳吸附量。實驗顯示銅改質活性碳可成功移除水中之苯甲酸,且不隨高溫而降低吸附量,並利用甲醇脫附達到回收再利用。
In the recent years the industry develops very fast, thus many organic solvents and a large number of synthetic chemicals are used. Pure terephthalic acid ( PTA) is primarily used in the production of polyester fiber with major demand boost in Asia, therefore PTA process wastewater discharge increases with the increase in PTA demand. PTA process wastewater contains a lot of organic acids that are harmful to not only aquatic environment but also to human kind. In this study, activated carbon was modified with copper nitrate by impregnation method, and then used to adsorb the PTA process byproduct - benzoic acid, followed by desorption with methanol. According to the literature, copper in the modified activated carbon can form complexes with organic compounds, and thus increase the amount of organic compounds adsorbed by the activated carbon. The experimental results showed that benzoic acid in the wastewater could be successfully removed by copper-modified activated carbon and the adsorption amounts would not decrease at higher temperatures. It is quite possible to use methanol to desorb benzoic acid and to recover both benzoic acid and methanol.
目錄
誌 謝i
ABSTRACTii
摘 要iii
目錄iv
表目錄vii
圖目錄viii
第一章 前言1
1.1 研究背景1
1.2 研究目的2
第二章 文獻回顧4
2.1 PTA製程4
2.2 廢水處理方法13
2.2.1 生物降解技術13
2.2.2 化學處理14
2.2.3 超臨界水氧化法14
2.2.4 高級氧化法14
2.3活性碳之種類與特性16
2.3.1 活性碳之種類16
2.3.2活性碳之特性18
2.4吸附原理21
2.4.1 物理吸附 ( Physical adsorption ) 21
2.4.2 化學吸附 ( Chemical adsorption ) 22
2.5 等溫吸附曲線24
2.5.1 Freundlich Model25
2.5.2 Langmuir Model26
2.6銅改質活性碳製備程序30
2.6.1 含浸法30
2.7 AMBERLITE IRC74830
2.7.1 AMBERLITE IRC748 特性與結構30
2.7.2 AMBERLITE IRC748之選擇性31
第三章 實驗35
3.1 實驗藥品與儀器35
3.1.1實驗藥品35
3.1.2實驗儀器35
3.2 實驗步驟37
3.2.1 活性碳前處理37
3.2.2 活性碳改質處理37
3.3 檢量線測定38
3.3.1 UV/VIS 檢量線38
3.4苯甲酸之吸附平衡41
3.5 管柱實驗43
3.6 管柱再生實驗45
第四章 結果與討論46
4.1 活性碳特性檢測46
4.2 吸附平衡模式49
4.3 管柱實驗56
4.4 管柱脫附59
第五章 結論62
參考文獻63


表目錄
表 2.1 TPA廢水組成11
表 2.2 PTA製程中產生的芳香族有機酸之物理之特性12
表 2.3活性碳之孔隙大小分布20
表 2.4物理吸附和化學吸附之差別23
表 2.5單成份等溫吸附模式28
表 2.6多成份等溫吸附模式29
表 2.7 AMBERLITE IRC 748樹脂特性32
表 2.8 AMBERLITE IRC 748 樹脂的選擇性34
表 4.1活性碳之特性48
表 4.2 BA在pH11之等溫吸附模式參數55
表 4.3管柱實驗在pH11,30℃之設定條件57
表 4.4不同比例甲醇脫附苯甲酸之比較62


圖目錄
圖 1.1聚酯纖維生產量比較圖3
圖 2.1對苯二甲酸結構式6
圖 2.2粗對苯二甲酸(CTA)製造流程圖7
圖 2.3純對苯二甲酸(PTA)製造流程圖8
圖 2.4對苯二甲酸總反應9
圖 2.5對苯二甲酸製程其反應中間體10
圖 2.6 AMBERLITE IRC748 結構33
圖 3.1苯甲酸在pH11下之UV最大吸收波長39
圖 3.2苯甲酸在pH11下之檢量線40
圖 3. 3等溫吸附裝置圖42
圖 3.4管柱實驗流程裝置圖44
圖 4.1不同金屬改質活性碳47
圖4.2 30℃等溫吸附與Freundlich模式比較50
圖 4.3 40℃等溫吸附與Toth模式比較51
圖4.4 50℃等溫吸附與Toth模式比較52
圖4.5 60℃等溫吸附與Toth模式比較53
圖4.6不同溫度之吸附曲線54
圖4.7活性碳床體之貫穿曲線58
圖 4.8脫附苯甲酸之出口濃度60
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