活性藍(lán)染料脫色研究

化工論文編號:HG191  論文字?jǐn)?shù):19508,頁數(shù):37

目  錄
中文摘要 I
英文摘要 II
目錄 III
1. 緒論 1
 1.1 印染廢水處理的方法 1
 1.2 二氧化氯的性質(zhì) 2
 1.3 二氧化氯的制備方法 2
 1.4 二氧化氯的應(yīng)用概況 2
 1.5 二氧化氯的脫色機(jī)理 3
 1.6 二氧化氯在印染廢水處理中應(yīng)用 3
2. 實(shí)驗(yàn)部分 6
 2.1 實(shí)驗(yàn)試劑與玻璃儀器 6
 2.1.1 主要原料和試劑 6
 2.1.2 主要儀器 6
 2.2 實(shí)驗(yàn)步驟 6
 2.2.1 用亞氯酸鈉自氧化法制備二氧化氯 6
 2.2.2 用丙二酸法測定二氧化氯總含量 7
 2.2.3 模擬廢水 8
3. 結(jié)果與討論 9
 3.1 標(biāo)準(zhǔn)曲線的繪制 9
 3.1.1 確定最佳吸收波長 9
 3.1.2 標(biāo)準(zhǔn)曲線的繪制 9
 3.2 單因素考察 10
 3.2.1 反應(yīng)溫度對活性藍(lán)染料脫色效果的影響 10
 3.2.2 轉(zhuǎn)速對活性藍(lán)染料脫色效果的影響 11
 3.2.3 pH值對染料脫色效果的影響 12
 3.2.4 ClO2投加量對染料脫色效果的影響 13
 3.2.5 染料起始濃度對脫色效果的影響 14
 3.2.6 反應(yīng)時(shí)間對染料脫色效果的影響 15
 3.3 脫色率與時(shí)間的關(guān)系擬合 16
 3.4 染料與二氧化氯反應(yīng)的摩爾比推算 17
4．總結(jié)與展望 18
致謝 19
參考文獻(xiàn) 21

摘要：二氧化氯具有強(qiáng)氧化性、不穩(wěn)定性和消毒性，其氧化能力是次氯酸的9倍多，是氯的2.6倍。本文在生產(chǎn)和制備二氧化氯及穩(wěn)定性二氧化氯的基礎(chǔ)上，用分光光度法測定反應(yīng)后活性藍(lán)染料的含量，從而計(jì)算二氧化氯對活性藍(lán)染料的脫色率。研究反應(yīng)溫度、pH值、攪拌速度、二氧化氯用量、活性藍(lán)染料起始濃度、反應(yīng)時(shí)間對活性藍(lán)染料的脫色效果。實(shí)驗(yàn)結(jié)果表明：二氧化氯對活性藍(lán)染料的脫色率在一定條件下能達(dá)到95%以上，反應(yīng)溫度、攪拌速度、活性藍(lán)染料起始濃度對脫色率影響不大，反應(yīng)時(shí)間也很快，5分鐘基本上完全反應(yīng)，在酸性條件下對脫色率沒什么影響，但在堿性條件下pH值越大脫色率越低。二氧化氯對活性藍(lán)染料脫色的較佳條件：反應(yīng)溫度25℃，反應(yīng)時(shí)間10min，轉(zhuǎn)速250r/min，pH=10，活性藍(lán)染料與二氧化氯反應(yīng)的摩爾比為1：60。

關(guān)鍵詞：  二氧化氯； 活性藍(lán)染料； 脫色率； 分光光度法

Abstract: Chlorine dioxide has strong property of oxidation, the instability and the disinfection, its oxidized ability is more than 9 time of hypochlorous, and is 2.6 times of chlorine.  This article is based on the production and the preparation of chlorine dioxide and stable chlorine dioxide, the content of the Reactive blue was after reaction determined by Spectrophotometric methods, thus decolorization rate of Reactive blue was calculated with chlorine dioxide. Then the decolorization effect of the Reactive blue by reaction temperature, pH, mixing speed, the amount of chlorine dioxide, concentration of Reactive blue, reaction time were studied. The experimental result indicated that, the decolorization rate can achieve above 95% by chlorine dioxide under the certain condition. The reaction temperature, the mixing speed, and concentration of the Reactive blue have no evident influence to the decolorization rate. The reaction is very quick. The reaction would be completed within 5 minutes, so it has no influence to decolorization rate under acidic condition, but under the alkalinity condition, the larger pH is , the lower decolorization rate is. So the best condition were the followings: reaction temperature is 25℃, reaction time is 10min, rotational speed is 250r/min, pH is 10, the ratio of the Reactive blue and a chlorine dioxide is 1: 60.

Keywords: Chlorine dioxide； Reactive blue； Decolorization rate； Spectrometric