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題 名 | 紙床毛細滲透膠體吸附分離水中Ni(Ⅱ)、Zn(Ⅱ)、Cd(Ⅱ)和Cu(Ⅱ)離子=Separation of Ni(Ⅱ), Zn(Ⅱ), Cd(Ⅱ) and Cu(Ⅱ) from Aqueous Solutions by Colloid Adsorption in Water Capillary Permeation in Paper |
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作 者 | 王萬珙; 方士文; 簡志宏; 潘忠政; 許韋軒; 魏子凱; 溫振明; 廖彩汝; 歐陽智; 劉彥志; | 書刊名 | 化學 |
卷 期 | 57:4 1999.12[民88.12] |
頁 次 | 頁289-294 |
分類號 | 343.02 |
關鍵詞 | 紙; 重金屬; 分離; 共沉澱; Paper; Heavy metals; Separation; Coprecipitation; |
語 文 | 中文(Chinese) |
中文摘要 | 以紙為毛細滲透介質,應用靜電力吸附,多次分配和共沉澱等原理分離水中重金 屬離子。實驗方法是 Ni(Ⅱ)等四種重金屬離子溶液10或50ppm於Al(Ⅲ)或Fe (Ⅲ) 存在下生成氫氧化鋁或氫氧化鐵等共沉澱混合液,接著在空氣隔絕密閉空間,混合液 以毛細作用力從紙床一端滲入,移行一段距離,而於7cm 遠一端流出而被搜集供作分析重 金屬濃度。結果顯示紙床有膠體沉著色帶,流出液之重金屬濃度小於打樁濃度,最佳去除率 100 %,與未經同法處理之殘留濃度比較,最大提高去除量:Ni(Ⅱ),4.485ppm, Zn(Ⅱ ),>1.69 ppm, Cd(Ⅱ),>2 ppm, Cu(Ⅱ),2.334 ppm。 對同一打樁濃度,殘留濃度受到 pH、Al(Ⅲ) 或Fe(Ⅲ) 劑量之影響,pH 愈高和劑量愈多,殘留濃度愈小。本技術於常 用於化學分析和廢水處理之共沉澱分離有潛在應用價值。 |
英文摘要 | Principles of capillary permeation, electrostatic attraction, coprecipitation and multipartition between two phases were applied for removing heavy metal ions from aqueous solutions. Experimentally, four heavy metal ions including Ni(Ⅱ),Zn(Ⅱ), Cd(Ⅱ)and Cu(Ⅱ) solutions were coprecipitated as aluminum hydroxide or iron hydroxide and the formed colloid solutions were then let to permeate capillarily into paper (7 cm × 23.5 cm) in an airtight closed space. After permeating for 7 cm, effluents emerged from the paper and were collected for analysis. Results showed that (1) color band formed in paper, (2) the residues in the effluents were lower than the spikes, the optimum removals from 10 and 50 ppm spikes were 100%, (3) the residues were lower than the corresponding ones without the treatment of capillary permeation in paper, the largest difference was -4.485 ppm for Ni(Ⅱ), (4) high pH and large dosage of Al(Ⅲ) or Fe(Ⅲ) favored removals. The technique may be potentially applicable in the chemical analysis and in the wastewater treatment for elevating removals that are traditionally done by only coprecipitation step. |
本系統中英文摘要資訊取自各篇刊載內容。