使用兩階段厭氧發酵處理農業廢棄物產生沼氣及其最適化操作

能源問題是人類在本世紀面臨的重要議題之一。

人們亟需尋求綠色可再生能源來滿足巨額的能源消耗，並且擺脫對於化石燃料的依賴。

厭氧發酵技術可以利用微生物將農業廢棄物 ... 資料載入處理中... 跳到主要內容 臺灣博碩士論文加值系統 ::: 網站導覽| 首頁| 關於本站| 聯絡我們| 國圖首頁| 常見問題| 操作說明 English |FB專頁 |Mobile 免費會員 登入| 註冊 功能切換導覽列 (165.22.106.144)您好！臺灣時間：2022/08/0614:50 字體大小：       ::: 詳目顯示 recordfocus 第1筆/ 共1筆  /1頁 論文基本資料 摘要 外文摘要 目次 參考文獻 電子全文 紙本論文 論文連結 QRCode 本論文永久網址: 複製永久網址Twitter研究生:郭木鐸研究生(外文):Mu-DuoGuo論文名稱:使用兩階段厭氧發酵處理農業廢棄物產生沼氣及其最適化操作論文名稱(外文):Optimizationoftwo-stageanaerobicdigestionprocessforbiogastotreatagriculturalwaste指導教授:徐敬衡、Chin-HangShu學位類別:碩士校院名稱:國立中央大學系所名稱:化學工程與材料工程學系學門: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:2020畢業學年度:108語文別:中文論文頁數:96中文關鍵詞:厭氧發酵、甲烷、農業廢棄物相關次數: 被引用:0點閱:158評分:下載:16書目收藏:0 能源問題是人類在本世紀面臨的重要議題之一。

人們亟需尋求綠色可再生能源來滿足巨額的能源消耗，並且擺脫對於化石燃料的依賴。

厭氧發酵技術可以利用微生物將農業廢棄物轉化為沼氣，這使得其不單具有經濟價值，更有環保方面的效用，將農業廢棄物轉化為甲烷既能得到清潔環保的可燃氣體，又可以解決原有的廢棄物處理問題，因此目前世界各國都在積極發展厭氧發酵技術。

目前台灣的厭氧發酵工廠大多使用單階段厭氧發酵反應，即在一個反應器內同時進行全部的厭氧發酵反應。

但厭氧發酵反應實際上具有多個步驟，並且由不同的微生物群完成。

如果可以從微生物群的角度將用於產酸水解的微生物與用於產甲烷的微生物分離，則將有機會找到它們各自適合的發酵參數，使得每個步驟都有最適化的可能。

除此之外還可以避免因過度產酸而抑制產甲烷菌活性的情況。

因此本研究，將水解產酸菌與產甲烷菌做分離構成獨立的水解產酸階段和產甲烷階段，再使用兩階段厭氧發酵最終生成甲烷。

對每個階段進行的最適化討論，以達到提升產率的目的。

本研究使用熱處理的方式對厭氧微生物做處理，得到可用於水解產酸，但不會產生甲烷的厭氧污泥。

之後使用該污泥做兩階段厭氧發酵與單階段厭氧發酵做對比，甲烷產量提升21%。

最後探討碳氮比，一階段溫度，二階段溫度對厭氧發酵之影響。

當一階段溫度為35℃，二階段溫度為50℃，碳氮比為10時甲烷產量最大，達到每克揮發性固體84毫升甲烷氣體。

AbstractTheenergyissueisoneoftheimportanttopicsinthiscentury.Withthegrowingdemandforenergy,thereisanurgentneedtodevelopclean,renewableenergytogetridofdependenceonfossilfuels.Anaerobicfermentationtechnologyconvertsagriculturalwasteintobiomethane,andatthesametimegeneratescleanandenvironmentallyfriendlybiogasandsolvestheproblemofwastedisposal.Therefore,countriesaroundtheworldactivelydevelopinganaerobicfermentationtechnology.MostoftheanaerobicfermentationplantsinTaiwanuseasingle-stageanaerobicfermentationreaction,thatis,theentireanaerobicfermentationprocessisperformedsimultaneouslyinonereactor.Buttheanaerobicfermentationactuallyhasmultiplestepsandiscompletedbythedifferentmicroorganism.Ifthemicroorganismsusedforacidogenichydrolysisareseparatedfromthemicroorganismsusedformethanogenesis,therewillbeanopportunitytofindtheirrespectiveoptimizedoperatingparameters.Ifvolatilefattyacid-producingmicroorganismsareseparatedfrommethanogens,therespectiveoptimizedoperatingparameterswillbefound.Thisstudyusesatwo-stageoperationforanaerobicfermentationandoptimizesitforhigheryields.Whenthefirststagetemperatureis35degrees,thesecondstagetemperatureis50degrees,andthecarbon-nitrogenratiois10,themethaneproductionisthebest,reaching84(ml)ofmethanegaspergramofvolatilesolids. 目錄摘要iAbstractiii誌謝v圖目錄viii表目錄x第一章緒論11-1研究動機11-2研究目的3第二章文獻回顧52-1生質能源52-2生質氣體與生質甲烷72-3厭氧發酵產甲烷92-4厭氧發酵環境因子132-4.1溫度132-4.2pH值142-4.3碳氮比(C/Nratio)152-4.4揮發性脂肪酸162-4.5氨氮類物質172-5菇包木屑(spentmushroomsubstrate,SMS)182-6菇包木屑之組成182-7預處理212-8雞糞232-9兩階段厭氧發酵242-10污泥處理25第三章材料與方法263-1實驗設計與流程263-2實驗材料283-3實驗藥品303-4實驗儀器與設備313-5實驗方法333-5.1菇包木屑的酸水解預處理333-5.2污泥處理與分離效果之驗證333-5.3以單階段厭氧發酵驗證分離效果343-5.4兩階段發酵與單階段發酵之對比實驗343-5.5兩階段操作之最適化操作363-6分析方法38第四章實驗結果與討論464-1熱處理法與曝氣法對於污泥之處理效果464-1.1使用兩種污泥做厭氧發酵之biogas產量464-1.2使用兩種污泥做厭氧發酵之pH值變化474-1.3使用兩種污泥做厭氧發酵之甲烷濃度494-2以水解產酸污泥做兩階段厭氧發酵對照實驗504-2.1產甲烷階段之每日biogas產量504-2.2產甲烷階段之pH變化514-2.3產甲烷階段揮發性脂肪酸含量變化524-2.4產甲烷階段之甲烷濃度544-2.5產甲烷階段之每日甲烷產量554-2.6甲烷累積量564-3兩階段發酵最適化條件探討574-3.1一階段溫度變化對biogas產量的影響574-3.2一階段溫度變化對pH的影響594-3.3一階段溫度變化對揮發性脂肪酸累積量的影響604-3.4一階段溫度變化對二階段甲烷濃度的影響614-3.5一階段溫度變化對二階段甲烷產量的影響614-3.6二階段溫度變化對產甲烷階段biogas產量的影響644-3.7二階段溫度變化對產甲烷階段pH的影響664-3.8二階段溫度變化對甲烷濃度的影響674-3.9二階段溫度變化對產甲烷產量的影響684-3.10碳氮比對產甲烷階段biogas的影響694-3.11碳氮比變化對產甲烷階段pH值的影響714-3.12碳氮比變化對產甲烷濃度的影響724-3.13碳氮比變化對甲烷產量的影響73第五章結論與建議755-1結論755-2建議76參考文獻77 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