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文摘
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分别通过静态吸附和动态吸附的方法来研究活性氧化铝对水中磷酸根的吸附行为及其再生特性,并探讨了活性氧化铝的除磷机理。结果表明,降低溶液pH、增大溶液初始磷含量有利于活性氧化铝的吸附;在25 ℃、pH=7的条件下,活性氧化铝吸附磷酸根符合Langmuir和Freundlich吸附等温线,其拟合饱和吸附量约为14.43 mg/g。增大流速和磷酸根初始磷含量均会缩短穿透时间。 |
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其他语种文摘
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The adsorption of phosphate from aqueous solution by activated alumina and its regeneration performance were studied by static and dynamic adsorption methods, and the mechanism of phosphorus removal by activated alumina was discussed. The results showed that, the adsorption was favored by acidic condition and high initial phosphate content. Phosphate adsorption by activated alumina could fitted Langmuir and Freundlich isotherm models at 25℃and pH=7, and the maximum calculated adsorption capacity was 14.43 mg/g. And higher flow rate and higher initial phosphate content would result in less permeation time. Furthermore, the activated alumina could be regenerated using 10 mmol/L Al_2(SO_4)_3, with a regeneration efficiency of 90%. Chemical adsorption played the dominant role of phosphate adsorption by activated alumina, and aluminum phosphate could generate on the surface of activated alumina after adsorption. |
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来源
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水处理技术
,2018,44(1):65-70,75 【核心库】
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DOI
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10.16796/j.cnki.1000-3770.2018.01.014
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关键词
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活性氧化铝
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磷
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吸附特性
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再生
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吸附机理
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地址
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1.
中国科学院矿物学与成矿学重点实验室, 广东省矿物物理与材料研究开发重点实验室, 中国科学院矿物学与成矿学重点实验室;;广东省矿物物理与材料研究开发重点实验室, 广东, 广州, 510640
2.
中国科学院大学, 北京, 100049
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1000-3770 |
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学科
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化学工业 |
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基金
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国家自然科学基金
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中国科学院重点部署项目
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广东省广州市科技计划项目
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中国科学院广州地球化学研究所135项目
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文献收藏号
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CSCD:6381385
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