101年度綠色奈米技術之開發及應用計畫-沼氣脫硫奈米零價鐵濾床技術之開發與應用
| 中文摘要 | 台灣過去推動畜牧業沼氣發電，但由於普遍機具設備設計不良，未將沼氣內所產生的硫化氫(H2S)氣體去除，造成處理設備及發電設施的腐蝕，使得沼氣發電未能達到預期的效益。本計畫利用奈米零價鐵對硫化氫之良好去除效率，探討應用奈米零價鐵做為沼氣脫硫技術之可行性。本計畫包括水相與氣相硫化氫去除之研究，執行的方式包括實驗室的試驗與養豬畜牧業現場的實地測試。吸附材料有：實驗室自行配製奈米零價鐵(nZVI)、顆粒型活性碳複合奈米零價鐵(GACnZVI)、粉碎型活性碳複合奈米零價鐵(CACnZVI)。研究成果包括：(1) 奈米零價鐵複合活性碳對於水中硫化氫的去除成效分析、(2) 奈米零價鐵複合活性碳填充於自製化學濾網在濾床模組對氣相硫化氫去除的實驗室之測試結果、(3) 填充奈米零價鐵複合活性碳濾網在屏東林秋美畜牧場現場試驗硫化氫去除之結果。在水相中，pH值影響奈米鐵對硫化氫的吸附去除，pH越低，吸附效果越好，但當奈米零價鐵複合活性碳後，在近中性條件下，仍有良好之吸附效果。奈米零價鐵複合活性碳對硫化氫之飽和吸附量介於360-895 mg/g之間。在氣相實驗中，增加濾網數目可提升使用時效最高達3倍之多，使用奈米鐵複合活性碳可顯著提高硫化氫之吸附量約3-4倍。在屏東林秋美畜牧場現場試驗顯示，本計畫所設計之化學濾網過濾系統，成功的去除實場沼氣中的硫化氫，奈米零價鐵複合活性碳濾網其對硫化氫的吸附量為75.6 mg/g ，較實驗室之結果為佳。成本效益分析得，使用CACnZVI去除氣相中之硫化氫的成本參數106,000元/Kg H2S，去除水相中之硫化氫的成本參數10,050元/Kg H2S。 | ||
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| 中文關鍵字 | 沼氣發電;奈米零價鐵;硫化氫 | ||
基本資訊
| 專案計畫編號 | EPA-101-U1U1-02-101 | 經費年度 | 101 | 計畫經費 | 2690 千元 |
|---|---|---|---|---|---|
| 專案開始日期 | 2012/01/20 | 專案結束日期 | 2012/12/31 | 專案主持人 | 連興隆 |
| 主辦單位 | 永續發展室(停用) | 承辦人 | 蘇鈺珊 | 執行單位 | 國立高雄大學 土木與環境工程學系 |
成果下載
| 類型 | 檔名 | 檔案大小 | 說明 |
|---|---|---|---|
| 期末報告 | EPA-101-U1U1-02-101期末報告.pdf | 3MB |
Development and application of nanoscale zerovalent iron filter technology for H2S removal from biog
| 英文摘要 | Electricity generation from the biogas in pig farms has been promoted by the government in Taiwan for quite a long time; however, it has encountered obstacles because the equipments easily corrodes by untreated biogas containing hydrogen sulfide that produced by the anaerobic digestion. The project is aimed at developing the nanoscale zero-valent iron coated filter as a novel dry desulfurization technology to remove the hydrogen sulfide from the biogas. In this study, hydrogen sulfide presented in both aqueous phase and gas phase was examined. Experiments included laboratory and field tests. Three types of adsorbents were used: nanoscale zero-valent iron (nZVI), nZVI coated granular activated carbon (GACnZVI) and nZVI coated crashed activated carbon (CACnZVI). Results can be listed as three parts: (1) hydrogen sulfide removal in the aqueous phase using adsorbents in the laboratory, (2) hydrogen sulfide removal in the gas phase using adsorbents in the laboratory, and (3) hydrogen sulfide removal in the gas phase using adsorbents in a pig farmer in Pingdong. It was found that the increase in pH decreased the sulfide removal capacity in the use of nZVI. Nevertheless, the use of CACnZVI the pH effect becomes insignificant at near neutral pH. The average adsorption capacity was in the range of 360-895 mg/g. In the gas phase study, increasing the numbers of filters increased the operation spin for more than 3 times compared to the singal filter. The use of CACnZVI enhanced the sulfide removal capacity by a factor of 3-4. A successful model system of the CACnZVI filter has been confirmed by the results obtained at the Lin Chu-May pig farm in Pingdong city. The sulfide removal capacity was determined to be about 75.6 mg/g, which is greater than that obtained in the laboratory. Based on the cost-effective analysis, the media cost of CACnZVI is 106,000 NTD/Kg H2S and 10,050 NTD/Kg H2S for gas and aqueous phase treatment, respectively. | ||
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| 英文關鍵字 | Biogas electricity;nanoscale zerovalent iron;hydrogen sulfide | ||