| 季铵化壳聚糖及其絮凝六价铬性能的研究 |
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| 引用本文： | 蔡照胜,杨春生,王锦堂,许琦,严金龙.季铵化壳聚糖及其絮凝六价铬性能的研究[J].工业用水与废水,2005,36(2):63-66. |
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| 作者姓名： | 蔡照胜 杨春生 王锦堂 许琦 严金龙 |
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| 作者单位： | 1. 盐城工学院,化学与生物工程学院,江苏,盐城,224003
2. 南京工业大学,理学院,南京,210009 |
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| 基金项目： | 江苏省环保基金资助项目(2002031) |
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| 摘 要： | 以3-氯-2-羟丙基三甲基氯化铵(CTA)为改性剂接枝改性了壳聚糖,制备得到了2-羟丙基三甲基壳聚糖季铵盐(CTA-CTS),用红外光谱和核磁共振表征了产物的结构;用得到的产品处理含Cr2O72-的模拟电镀废水,研究了接枝时间、废水的pH值、CTA-CTS的质量浓度对Cr(Ⅵ)去除能力的影响。结果表明:接枝反应主要发生在—NH2上,并以反应时间为10.0h的产品对Cr(Ⅵ)的去除能力较强,在pH值为5.0,CTA-CTS的质量浓度为100mg/L左右时,对Cr(Ⅵ)的去除率可达95%。
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| 关 键 词： | 3-氯-2-羟丙基三甲基氯化铵 壳聚糖 季铵化 接枝改性 废水处理 |
| 文章编号： | 1009-2455(2005)02-0063-03 |
| 修稿时间： | 2004年8月9日 |
A Study of Chitosan Quaternized by CAT and It's Flocculation Performance on chromium (Ⅵ) |
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| CAI Zhao-sheng,YANG Chun-sheng,WANG Jin-tang,XU Qi,YAN Jin-long.A Study of Chitosan Quaternized by CAT and It''''s Flocculation Performance on chromium (Ⅵ)[J].Industrial Water & Wastewater,2005,36(2):63-66. |
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| Authors: | CAI Zhao-sheng YANG Chun-sheng WANG Jin-tang XU Qi YAN Jin-long |
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| Abstract: | Chitosan was graft modified with 3-chloro-2-hydroxypropyltrimethyl ammonium chloride(CTA) as modifier, with which 2-hydroxypropyltrimethyl quaternary ammonium salt(CTA-CTS) was prepared, and the structure of the product was characterized by IR and NMR. The product so obtained was used for the treatment of the Cr2O72--containing simulated electroplating wastewater, and the effects of the grafting time, the pH value of wastewater and the mass concentration of CTA-CTS on Cr(VI)-removing efficiency were studied. The results show: graft reaction mainly takes place on -NH2, and the product whose reaction time is 10.0 h has a stronger Cr(VI)-removing ability; when the pH value is 5.0, the mass concentration of CTA-CTS is about 100 mg/L, the removal rate of Cr(VI) may reach 95%. |
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| Keywords: | 3-chloro-2-hydroxypropyltrimethylammonium chloride chitosan quaternization graft modification wastewater treatment |
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