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題名 | 燃油飛灰殘碳處理染整廢水之研究=Treatment of Dyeing Effluent by Residual Carbon from Oil-fired Fly ash |
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作者 | 蔡敏行; 謝雅敏; 蔡尚林; 洪啟勛; | 書刊名 | 鑛冶 |
卷期 | 43:2=166 1999.06[民88.06] |
頁次 | 頁49-56 |
分類號 | 445.2593 |
關鍵詞 | 燃油飛灰; 殘碳; 資源化; 吸附; 染整廢水; Oil-fired fly ash; Residual carbon; Recycling; Adsorption; Dyeing effluent; |
語文 | 中文(Chinese) |
中文摘要 | 燃油飛灰為燃油鍋爐之集塵裝置所捕集的飛灰,主要是重油未完全燃燒所形成之 多孔質碳粒、氧化物及水溶性鹽類所構成,依重油消耗量推估年發生量約六萬噸左右。由於 燃油飛灰中含有 12 %的有價金屬 (釩、鎳 ),因此其處理皆以浸漬回收有價金屬為主,在 此過程中對燃油飛灰之主要成分碳 (含量高達 40-80 % ) 並無資源化而殘留下來,稱之為殘 碳。目前殘碳之處理僅是少量添加於燃料煤中焚化回收熱能,無視殘碳之再生用途,有資源 浪費之虞。本研究針對殘碳物化性質測定與吸附實驗之結果,獲知殘碳之碳含量高約 80 % 以上,並具有如活性炭般之吸附特性,可視為如活性碳之資源再生材料。此外,殘碳之孔隙 大小有別於活性炭、所含孔隙以大孔隙為主,比表面積約 23.33m ��/g,為活性碳之 1/35 1/28,而碘值約 137 195mg/g,為活性碳之 1/6 1/4,與活性炭僅差數倍;於常溫吸附酸性 染料之模擬液時,殘碳與活性碳均符合 Freundlich 等溫吸附模式,殘碳的單位吸附量約為 58mg/g 39mg/g 左右,活性炭約為 401mg/g,且吸附行為也都以物理吸附為主,兩者於吸咐 行為上之最大差異是吸附容量之大小不同,但對於實際反應性染料廢水,鹼浸漬殘碳卻有比 活性炭較佳之脫色性能。 |
英文摘要 | Oil-fired fly ash is collected from dust-collector in industry boilers. The waste is constituted of carbon from unburnt heavyoil, oxide and water soluble sulfate. In accordance with heavy-oil consumption, it is estimated that the annual production of oilfired fly ash is about 60,000 tons in Taiwan. Because there is 12 % valuable metals such as vanadium and nickel in the oil-fired fly ash, the recovery of these valuable metals by means of leaching method becomes the main purpose in all the treatment of the oil-fired fly ash. The main component, 40-80 % carbon, in oil-fired fly ash is not recyeled and, it comes out as a large amount of residue called "residual carbon", At present, there's not any recycling programs to treat residual carbon except the replacement of a small amount of coal fuel. So the object of this research works toward recycling residual carbon, especially on the practice of adsorption of residual carbon. The result of basic physicochemical analysis and adsorptive experiment shows that the carbon content of residual carbon is above 80 %, the residual carbon owns the adsorptive ability such like activated carbon, and it seems as activated carbon. the following are some comparable properties between residual carbon and activated carbon: The residual carbon owns much more macro-pores, the specific area of residual carbon is 23-33 m ��/g which is 1/35 that of actiated carbon, the idiom value of residual carbon is 137-195mg/g which is 1/6 1/4 that of activated carbon. Besides, the adsorptive amount of residua-carbon is 58 39mg/g in the the adsorptive experiment, and that of activated carbon is about 400mg/g. Both residual carbon and activated carbon can match Freundlich Thermal Adsorptive Model, and are physical adsorption. The primary difference between residual carbon and activated carbon is the smaller adsorptive amount of residual carbon. But, in adsorbing reactive dyeing effluent, residual carbon decolors more excellently than activated carbon. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。