| 合成碳羟基磷灰石对废水中锰离子的吸附研究 |
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| 引用本文： | 唐文清,曾荣英,冯泳兰,许金生,颜环环,曾光明.合成碳羟基磷灰石对废水中锰离子的吸附研究[J].中国给水排水,2009,25(15). |
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| 作者姓名： | 唐文清 曾荣英 冯泳兰 许金生 颜环环 曾光明 |
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| 作者单位： | 1. 衡阳师范学院,化学与材料科学系,湖南,衡阳,421008
2. 湖南大学,环境科学与工程学院,湖南,长沙,410082 |
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| 基金项目： | 国家高技术研究发展计划(863)项目，国家杰出青年科学基金资助项目，湖南省自然科学基金资助项目，湖南省重点学科建设项目 |
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| 摘 要： | 利用废弃的蛋壳制备碳羟基磷灰石(CHAP),研究了其对废水中Mn2+的吸附作用,并探讨了CHAP用量、Mn2+浓度、温度、pH对吸附效果的影响.试验结果表明:在pH值为6、温度为30℃、搅拌时间为1 h、CHAP用量为3 g/L、Mn2+初始浓度为70 mg/L的条件下,CHAP对Mn2+的去除率可达到97.9%,吸附容量为22.84 mg/g;CHAP对Mn2+的吸附过程符合Langmuir和Fre-undlich吸附等温式,吸附反应是自发放热过程;H0准二级动力学模型能较好地描述CHAP对Mn2+的动力学吸附行为.
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| 关 键 词： | 合成碳羟基磷灰石 锰离子 吸附 正交试验 |
Adsorption of Manganese Ions from Wastewater by Synthetic Carbonate Hydroxyapatite |
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| TANG Wen-qing,ZENG Rong-ying,FENG Yong-lan,XU Jin-sheng,YAN Huan-huan,ZENG Guang-ming.Adsorption of Manganese Ions from Wastewater by Synthetic Carbonate Hydroxyapatite[J].China Water & Wastewater,2009,25(15). |
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| Authors: | TANG Wen-qing ZENG Rong-ying FENG Yong-lan XU Jin-sheng YAN Huan-huan ZENG Guang-ming |
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| Affiliation: | TANG Wen-qing1,ZENG Rong-ying1,FENG Yong-lan1,XU Jin-sheng1,YAN Huan-huan1,ZENG Guang-ming2(1.Department of Chemistry and Materials Science,Hengyang Normal University,Hengyang 421008,China,2.College of Environmental Science and Engineering,Hunan University,Changsha 410082,China) |
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| Abstract: | Mn2+ adsorption of simulated wastewater was conducted with carbonate hydroxyapatite (CHAP) which was synthesized by abandoned eggshell. The main factors that might affect the adsorption performance were investigated, such as CHAP dosage, Mn2+ concentration, reaction temperature and pH. The results show that the removal rate of Mn2+ can reach 97.9% and the adsorption capacity is 22.84 mg/g under the conditions of pH 6, temperature 30 ℃, stirring time 1 h, CHAP dosage 3 g/L and Mn2+ initial concentration 70 mg/L. The adsorption process accords with both Freundlich and Langmuir adsorption isotherm formula. The adsorption reaction is a spontaneous exothermic process. The dynamic data are well represented by the H0 pseudo-second-order kinetic model. |
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| Keywords: | synthetic carbonate hydroxyapatite manganese ion adsorption orthogonal test |
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