东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2006, Vol. 27 ›› Issue (2): 203-205.DOI: -

• 论著 • 上一篇    下一篇

用壳聚糖脱除废水中的铜离子

张廷安;豆志河;   

  1. 东北大学材料与冶金学院;东北大学材料与冶金学院 辽宁沈阳110004;辽宁沈阳110004
  • 收稿日期:2013-06-23 修回日期:2013-06-23 出版日期:2006-02-15 发布日期:2013-06-23
  • 通讯作者: Zhang, T.-A.
  • 作者简介:-
  • 基金资助:
    国家自然科学基金资助项目(50174018)

Removal of Cu in wastewater with chitosan

Zhang, Ting-An (1); Dou, Zhi-He (1)   

  1. (1) School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China
  • Received:2013-06-23 Revised:2013-06-23 Online:2006-02-15 Published:2013-06-23
  • Contact: Zhang, T.-A.
  • About author:-
  • Supported by:
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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.

关键词: 铜, 废水处理, 壳聚糖, 絮凝剂, 去除率

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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