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›› 2008, Vol. 8 ›› Issue (5): 877-881.

• 反应与分离 • 上一篇    下一篇

改性木质素磺酸盐对水中Cr6+的吸附

李爱阳 宋楚华 蔡玲   

  1. 湖南工学院化工系 湖南工学院化工系 湖南工学院化工系
  • 收稿日期:2008-04-15 修回日期:2008-06-18 出版日期:2008-10-20 发布日期:2008-10-20
  • 通讯作者: 李爱阳

Adsorption of Cr6+ in Water by Modified Lignosulfonate

LI Ai-yang SONG Chu-hua CAI Ling   

  1. Chemical Engineering Department, HuNan Institute of technology Chemical Engineering Department, HuNan Institute of technology Chemical Engineering Department, HuNan Institute of technology
  • Received:2008-04-15 Revised:2008-06-18 Online:2008-10-20 Published:2008-10-20
  • Contact: LI Ai-yang

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被引次数

49

摘要： 对改性木质素磺酸盐处理含Cr6+废水进行了研究，考察了改性木质素磺酸盐投加量、吸附时间、pH值和温度对吸附效果的影响. 实验结果表明，在优化实验条件下，改性木质素磺酸盐投加量为3 g、吸附时间为1 h及pH值4~7、常温条件下，可以使水中Cr6+含量低于0.5 mg/L，改性木质素磺酸盐对Cr6+的吸附符合Freundlich等温方程. 改性木质素磺酸盐是一种高效的重金属离子吸附剂.

关键词: 木质素磺酸盐, 改性, Cr6+, 吸附

Abstract: Treatment of Cr6+-containing wastewater by modified lignosulfonate was studied. The influences of quantity of modified lignosulfonate, adsorption time, pH value and temperature on its adsorption to Cr6+ in water were examined. The experimental results show that the content of Cr6+ in the treated water can be lower than the national standard of 0.5 mg/L under the following optimization conditions of the dosage of modification lignosulfonate 3 g, adsorption time 1 h, pH 4~7 and room temperature. The adsorption of modified lignosulfonat to Cr6+ agrees with Freundlich isothermal equation. The results indicate that modified lignosulfonat is a kind of good and cost effective adsorbent.

Key words: lignosulfonate, modification, Cr6+, adsorption

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