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| 活性氧化铝对六价铬的吸附研究 | |
| 引用本文： | 谭秋荀,张可方,赵焱,黄毅,张朝升.活性氧化铝对六价铬的吸附研究[J].环境科学与技术,2012,35(6):130-133,139. |
| 作者姓名： | 谭秋荀 张可方 赵焱 黄毅 张朝升 |
| 作者单位： | 1. 广州大学教育部广东省珠江三角洲水质安全与保护实验室,广东广州,510006 2. 中国科学研究院生态环境研究中心 ,北京100001;深圳市水务(集团)有限公司,广东深圳518031 3. 西安建筑科技大学,陕西西安,710054 |
| 基金项目： | 水体污染控制与治理科技重大专项 |
| 摘 要： | 为了应对水体中六价铬的污染问题,文章研究了活性氧化铝(AA)对六价铬的吸附效果。实验考察了吸附过程中的影响因素pH、六价铬初始浓度、投加量和吸附时间对吸附效果的影响。研究结果表明:活性氧化铝对六价铬的吸附效果受pH的影响较大,六价铬的去除率随着pH值的升高先升高然后降低,最佳pH为3,去除率为84.04%。六价铬的去除率随着活性氧化铝的投加量和吸附时间的增加逐渐升高然后趋于稳定,最佳的投加量和吸附时间分别为10 g/L和90 min,去除率分别为87.34%和84.04%。随着初始浓度的不断上升,六价铬的去除率逐渐下降。在原水条件下的吸附速度和吸附容量都比在纯水条件下低。平衡吸附数据符合Freundlich和Langmuir吸附等温线模型。活性氧化铝对六价铬吸附效果非常好,可以作为去除水中六价铬的吸附剂。 |
| 关 键 词： | 活性氧化铝 六价铬 吸附 |
Adsorption of Hexavalent Chromium by Activated Alumina |
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| TAN Qiu-xun , ZHANG Ke-fang , ZHAO Yan , HUANG Yi , ZHANG Chao-sheng.Adsorption of Hexavalent Chromium by Activated Alumina[J].Environmental Science and Technology,2012,35(6):130-133,139. | |
| Authors: | TAN Qiu-xun ZHANG Ke-fang ZHAO Yan HUANG Yi ZHANG Chao-sheng |
| Institution: | 1(1.Key Lab for Water Security and Protection in Pearl River Delta of the Ministry of Education,Guangzhou University,Guangzhou 510006,China; 2.Research Center for Eco-environmental Science,CAS,Beijing 100001,China; 3.Shenzhen Water(Group) Co.Ltd.,Shenzhen 518031,China; 4.Xi’an University of Architecture Technology,Xi’an 710054,China) |
| Abstract: | With the purpose of removing hexavalent chromium(Cr(Ⅵ) from wastewater by adsorption method,a bench scale experiment was conducted with activated alumina as adsorbent.Parameters affecting the adsorption were studied including pH,initial Cr(Ⅵ) concentration,dosage of activated alumina and equilibrium contact time.Findings of the experimental study suggested the optimized condition for Cr(Ⅵ) removal,i.e.,when pH at 3 and adsorption time of 90 min,removal rate of Cr(Ⅵ) reached 84.04%;when dosage of activated alumina was 10 g/L,removal rate of Cr(Ⅵ) could be as high as 87.34%.The experiment also suggested that the equilibrium adsorption data well fit the Langmuir and Freundlich isotherms. |
| Keywords: | activated alumina hexavalent chromium adsorption |
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