| 用壳聚糖脱除废水中的铜离子 |
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| 引用本文： | 张廷安,豆志河.用壳聚糖脱除废水中的铜离子[J].东北大学学报(自然科学版),2006,27(2):203-205. |
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| 作者姓名： | 张廷安 豆志河 |
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| 作者单位： | 东北大学,材料与冶金学院,辽宁,沈阳,110004 |
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| 基金项目： | 国家自然科学基金资助项目(50174018) |
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| 摘 要： | 研究了利用脱乙酰基壳聚糖絮凝剂絮凝除铜的方法.考察了氢氧化物、pH值、铜离子质量浓度、絮凝时间以及絮凝温度对去除率的影响.当pH=8时,用壳聚糖吸附铜离子,水样铜离子质量浓度低于100 mg.L-1时,除铜率在99%以上;即使铜离子原始质量浓度在400 mg.L-1,残液铜离子质量浓度仍符合国家废水排放标准.用NaOH絮凝沉淀,pH=11时,除铜率达100%,耗碱量大,不符合废水排放的酸度要求.
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| 关 键 词： | 铜 废水处理 壳聚糖 絮凝剂 去除率 |
| 文章编号： | 1005-3026（2006）02-0203-03 |
| 收稿时间： | 2005-06-14 |
| 修稿时间： | 2005年6月14日 |
Removal of Cu2+ in Wastewater with Chitosan |
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| ZHANG Ting-an,DOU Zhi-he.Removal of Cu2+ in Wastewater with Chitosan[J].Journal of Northeastern University(Natural Science),2006,27(2):203-205. |
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| Authors: | ZHANG Ting-an DOU Zhi-he |
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| Institution: | (1) School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China |
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| Abstract: | To remove Cu from wastewater using chitosan as flocculants, the effects of hydroxides, pH value, mass concentration of Cu2+ and flocculating time/temperature on removal rate were investigated. When pH value is 8 and the mass concentration of Cu2+ in water is lower than 100 mg·L-1, the removal rate of Cu2+ is higher than 99%. Even the original mass concentration is 400 mg·L-1, the residual mass concentration of Cu2+ is still up to China's national wastewater drainage standard. When using NaOH as flocculant the pH value is 11 and the removal rate of Cu2+ reaches 100%, but the consumption of alkali is too much and the acidity cannot meet the required standard for wastewater drainage. |
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| Keywords: | copper wastewater treatment chitosan flocculent removal rate |
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