| 淀粉-g-丙烯酸/凹凸棒土复合物制备及其吸附废水中NH_4~＋-N性能 |
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| 引用本文： | 陆蓓蓓,冯杨阳,陈英文,沈树宝.淀粉-g-丙烯酸/凹凸棒土复合物制备及其吸附废水中NH_4~＋-N性能[J].环境污染治理技术与设备,2011(10):2173-2176. |
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| 作者姓名： | 陆蓓蓓 冯杨阳 陈英文 沈树宝 |
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| 作者单位： | 南京工业大学生物与制药工程学院,南京210009 |
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| 基金项目： | 国家高技术研究发展计划（863）项目（2009AA05Z313）; 国家自然科学基金项目（50872052）; 国家“水专项”课题（2008ZX07101-003-02-05）; 江苏省环保课题（2009002） |
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| 摘 要： | 采用反相乳液聚合法以凹凸棒土为原料,合成了新型NH4＋-N吸附剂淀粉-g-丙烯酸/凹凸棒土,并进行了氨氮吸附对比实验。结果表明：凹凸棒土氨氮单位吸附量为4.243 mg/g;淀粉-g-丙烯酸/凹凸棒土氨氮单位吸附量为5.301 mg/g,吸附能力比未改性的凹凸棒土提高了25%。淀粉-g-丙烯酸/凹凸棒土的氨氮吸附过程比凹凸棒土更符合Freundlich等温吸附模型。随着pH、温度的升高,凹凸棒土和淀粉-g-丙烯酸/凹凸棒土对NH4＋-N吸附量逐渐增大。
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| 关 键 词： | 反相乳液 淀粉-g-丙烯酸/凹凸棒土 氨氮 吸附 |
Synthesis of starch-g-AA/attapulgite and adsorption of NH_4~＋-N in wastewater |
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| Lu Beibei Feng Yangyang Chen Yingwen Shen Shubao.Synthesis of starch-g-AA/attapulgite and adsorption of NH_4~＋-N in wastewater[J].Techniques and Equipment for Environmental Pollution Control,2011(10):2173-2176. |
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| Authors: | Lu Beibei Feng Yangyang Chen Yingwen Shen Shubao |
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| Institution: | Lu Beibei Feng Yangyang Chen Yingwen Shen Shubao (College of Biotechnology and Pharmaceutical Engineering,Nanjing University of Technology,Nanjing 210009,China) |
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| Abstract: | A novel composite adsorbent based on starch and attapulgite for removing NH＋4-N in wastewater was prepared by inverse emulsion polymerization,and comparison of ammonia nitrogen adsorption tests was carried out.The results showed that the adsorption capacity of unmodified attapulgite was 4.243 mg/g,while the adsorption capacity of starch-g-AA/attapulgite at 5.301 mg/g which was higher than the unmodified attapulgite by 25%.Adsorption process of starch-g-AA/attapulgite fitted Freundlich isotherm equation better than that of attapulgite.With the increase of pH and temperature,NH＋4-N adsorption capacity of both attapulgite and starch-g-AA/attapulgite increased. |
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| Keywords: | inverse emulsion starch-g-AA/attapulgite ammonia nitrogen adsorption |
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