| 改性粉煤灰对废水色度的吸附研究 |
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| 引用本文： | 阳卫国,钟文毅,蒋兴国,郭宜忠. 改性粉煤灰对废水色度的吸附研究[J]. 工业安全与环保, 2010, 36(5) |
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| 作者姓名： | 阳卫国 钟文毅 蒋兴国 郭宜忠 |
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| 作者单位： | 湖南衡阳钢管集团有限公司,湖南衡阳,421001;中南大学化学化工学院,长沙,410083 |
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| 摘 要： | 对粉煤灰进行水合碱改性和酸改性,合成改性粉煤灰。比较不同改性粉煤灰的氮BET比表面积和孔径大小;通过线性回归分析考察色度吸附容量与改性粉煤灰的比表面积、孔径的相关性;考察溶液pH值对色度的吸附性能的影响。实验结果表明,水合碱改性(熟石灰与粉煤灰质量比为1.5∶1)再硫酸(0.10 mol/L)改性粉煤灰对色度的吸附容量为lg[(c0-c)/c]=0.67;溶液pH值在3.5～6.5之间色度吸附效率最佳;回归分析出吸附剂的吸附容量和比表面积、孔径分布显著相关,比表面积越大,孔径越小,吸附性能越高。
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| 关 键 词： | 粉煤灰 吸附 比表面积 孔径分布 色度 回归 |
Study on the Adsorption of the Chroma in Wastewater by Modified Fly Ash |
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| YANG Weiguo,ZHONG Wenyi,JIANG Xingguo,GUO Yizhong. Study on the Adsorption of the Chroma in Wastewater by Modified Fly Ash[J]. Industrial Safety and Dust Control, 2010, 36(5) |
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| Authors: | YANG Weiguo ZHONG Wenyi JIANG Xingguo GUO Yizhong |
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| Affiliation: | YANG Weiguo1 ZHONG Wenyi2 JIANG Xingguo1 GUO Yizhong1(1.Hunan Hengyang Steel Tube Co.,Ltd.Hengyang,Hunan 421001) |
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| Abstract: | Fly ash properties are modified respectively by Ca(OH)2 and H2SO4 and their N-BET specific surface area and pore size distribution are tested.The linear regression method is applied to test the correlations of the specific surface area and pore size distribution of chroma adsoption capacity and modified fly ash and investigate the effects of pH on chroma adsorption.The results show that fly ash treated by Ca(OH)2(1.5/1) and H2SO4(0.10 mol/L) can significantly improve the adsorption capacity of chroma to lg[... |
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| Keywords: | fly ash adsorption specific surface area pore size distribution chroma regression |
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