| 化学絮凝过程中活性染料混合物的残余色度分布 |
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| 引用本文： | 蔡红梅,樊建新,申大忠.化学絮凝过程中活性染料混合物的残余色度分布[J].常熟理工学院学报,2008,22(2):51-54. |
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| 作者姓名： | 蔡红梅 樊建新 申大忠 |
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| 作者单位： | 山东师范大学,化学化工与材料科学学院,山东,济南,250014 |
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| 基金项目： | 山东省自然科学基金(No.Y2004B01)资助项目 |
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| 摘 要： | 以聚环氧氯丙烷二甲胺（PEPIDA）为絮凝剂，测量了化学絮凝过程中由活性黑（KN—B）和活性艳红（K-2BP）构成的二元混合染料模拟有色废水脱色过程中的残留色度分布．溶液残留色度与游离染料、结合态染料、粒子散射5个组分的浓度有关．在PEPIDA投加量不足的区间，KN-3R优先去除．在投加量过量的区间，样品中的残余色度主要来自重新稳定的染料＋PEPIDA配合物，粒子光散射也是降低脱色率的另一个原因，它引起1—4％的脱色率下降．根据残留色度分布曲线，得到KN—B和K-2BP与PEPIDA的结合常数分别为1．86×10^6．72×10^5L／mol．
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| 关 键 词： | 脱色 絮凝 聚电解质 活性染料 |
| 文章编号： | 1008-2794(2008)02-0051-04 |
| 修稿时间： | 2007年11月14 |
Residual Color Profiles of Reactive Dyes Mixture during a Chemical Flocculation Process |
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| CAI Hong-mei,FAN Jian-xin,SHEN Da-zhong.Residual Color Profiles of Reactive Dyes Mixture during a Chemical Flocculation Process[J].Journal of Changshu Institute of Technology,2008,22(2):51-54. |
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| Authors: | CAI Hong-mei FAN Jian-xin SHEN Da-zhong |
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| Institution: | CAI Hong-mei, FAN Jian-xin, SHEN Da-zhong (School of Chemistry, Chemical Engineering and Material Science, Shandong Normal University, Jinan, 250014, China) |
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| Abstract: | Residual color profiles of a model color wastewater samples, prepared by the mixtures of Reactive Red K-2BP （K-2BP） and Reactive Black KN-B （KN-B）, during a chemical flocculation process by using poly（epicholorohydrin-diamine） （PEPIDA） were investigated. In the region of insufficient dosage of PEPIDA, K-3R was preferentially removed. The residual color is related to the concentration of two free dyes, two complexes of dye ＋ PEPIDA and fine flocs dispersed in solutions. In the over-dosed region, the residual color in the samples is mainly from the re-stabilized complexes of dye ＋ PEPIDA. The light scattered by the particles is another reason for the decrease ca. 1 - 4% in color removal efficiency. According to the residual color profiles, the binding constants for K-2BP and KN-B onto PEPIDA were estimated to be 1.86 × 10^6 L/mol and 6. 72 ×10^5 L/mol, respectively. |
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| Keywords: | color removal flocculation polyelectrolyte reactive dye |
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