| 改性木质素磺酸盐对水中Cr6+的吸附 |
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| 引用本文： | 李爱阳,宋楚华,蔡玲. 改性木质素磺酸盐对水中Cr6+的吸附[J]. 过程工程学报, 2008, 8(5): 877-881 |
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| 作者姓名： | 李爱阳 宋楚华 蔡玲 |
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| 作者单位： | 湖南工学院化工系湖南工学院化工系湖南工学院化工系 |
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| 基金项目： | 湖南省教育厅科研项目，衡阳市工业科研开发计划基金 |
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| 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.
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| 关 键 词： | 木质素磺酸盐 改性 Cr6+ 吸附 |
| 收稿时间： | 2008-04-15 |
| 修稿时间： | 2008-06-18 |
Adsorption of Cr~(6+) in Water by Modified Lignosulfonate |
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| LI Ai-yang,SONG Chu-hua,CAI Ling. Adsorption of Cr~(6+) in Water by Modified Lignosulfonate[J]. Chinese Journal of Process Engineering, 2008, 8(5): 877-881 |
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| Authors: | LI Ai-yang SONG Chu-hua CAI Ling |
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| Affiliation: | Chemical Engineering Department, HuNan Institute of technologyChemical Engineering Department, HuNan Institute of technologyChemical Engineering Department, HuNan Institute of technology |
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| 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. |
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| Keywords: | Cr6 |
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