本文利用不同比例之聚乙二醇(Polyethylene glycol, PEG)與N-乙烯基吡咯烷酮(N-Vinyl-2-pyrrolidone, NVP)在不同比例下共聚合，然後加入正矽酸乙酯(Tetraethyl orthosilicate , TEOS)共混後得一系列PEG-co-PVP/SiO2系混成凝膠。產物內容包含PEG/PVP共聚物及PEG-co-PVP/SiO2系混成凝膠，分別經由相關儀器及檢測，一方面探討共聚物與混成凝膠應用於染料廢水脫色處理之可行性；另方面檢測共聚物與混成凝膠分別與染料間之相互作用；經由實驗結果顯示，PEG/PVP共聚物在酸性染液(C.I.Acid Red 299)中之Zeta電位隨PEG用量增加而減少，但粒徑卻相反，而對染液廢水之脫色效果隨之增加，亦即以PP11具有最佳之脫色效果。其次，在PEG-co-PVP/SiO2系混成凝膠方面，無論在直接染液(C.I.Direct Blue 146)或酸性染液(C.I.Acid Red 299)中，其Zeta電位則隨PVP用量之增加而減少，但粒徑卻相反，而對染液廢水之脫色效果則隨之增加，以PT89混成凝膠之脫色效果最佳，PT11則最差。另外，一系列之PT11~PT89混成凝膠對染料(C.I.Acid Red 299)廢水之脫色效果顯然比染料(C.I.Direct Blue 146)來的好。無論共聚物或混成凝膠對染液廢水之脫色效果皆隨吸附劑濃度及脫色時間之增加而提升，且共聚物及混成凝膠皆能與染料形成複合體。最後，PEG/PVP共聚物與其混成凝膠等兩種吸附劑對酸性染液(C.I.Acid Red 299)脫色效果恰成反比之順序，前者以PP11最好，後者以PT89最佳。

In this paper, the copolymer of polyethylene glycol (PEG) and N-Vinyl-2-pyrrolidone (NVP) was prepared and then mixed with tetraethyl orthosilicate (TEOS) to obtain a series of PEG-co-PVP/SiO2 composite gels. The products include PEG/PVP copolymer and PEG-co-PVP/SiO2 composite gels which were detected by relevant instruments respectively. This experiment discusses the decolorization feasibility by applying copolymer and composite gel in dye wastewater; on the other hand, it detects the interaction between copolymer and dye or between composite gel and dye. The experimental result shows the Zeta potential of PEG/PVP copolymer in acid dyes (C.I. Acid Red 299) decreases with the increase of PEG dosage, but grain size is on the contrary, while its effect of decolorization on dye wastewater increases. That is, PP11 has the best decolorization effect. Then, the Zeta potential of PEG-co-PVP/SiO2 composite gels in direct dyes (C.I. Direct Blue 146) or acid dyes (C.I. Acid Red 299) decreases with the increase of PVP dosage, but grain size is on the contrary, while its decolorization effect on dye wastewater increases. The decolorization effect of PT89 composite gel is the best, but that of PT11 is the worst. In addition, the decolorization effect of a series of PT11-PT89 composite gels on dye (C.I. Acid Red 299) wastewater is obviously better than dye (C.I. Direct Blue 146). The decolorization effect of both copolymer and composite gels on dye wastewater increases with the increase of sorbent concentration and decolorization time. Moreover, both copolymer and composite gels are able to form complex with dyes. Finally, the decolorization effect of two sorbents PEG/PVP copolymer and their composite gels on acid dyes (C.I. Acid Red 299) are in reverse order. PP11 in the former is the best while PT89 in the latter is the best.

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