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| 钛改性锰矿的除砷效果及机理研究 | |
| 引用本文： | 柳秀颖,黄永炳,王丽丽,李晓娟,涂书新. 钛改性锰矿的除砷效果及机理研究[J]. 环境工程, 2011, 29(6): 46-49. DOI: 10.13205/j.hjgc.201106014 |
| 作者姓名： | 柳秀颖 黄永炳 王丽丽 李晓娟 涂书新 |
| 作者单位： | 1. 武汉理工大学资源与环境工程学院,武汉,430070 2. 华中农业大学资源与环境学院,武汉,430070 |
| 基金项目： | 国家大学生创新性实验计划(101049763); 国家863项目(2007AA06Z332) |
| 摘 要： | 天然锰矿是一种廉价、易得的除砷矿物材料,为了进一步提高天然锰矿的除砷效果和吸附容量,采用TiCl4对广西桂林天然锰矿进行改性,并对其改性的条件进行优化。实验结果表明最佳的改性条件为:TiCl4浓度为10 mg/L,浸泡时间为18 h,pH=3.05,振荡吸附时间为1 h。与天然锰矿的去除效率(82.95%和77.93%)相比,改性锰矿对As(Ⅲ)和As(Ⅴ)去除率分别可达94.87%和99.31%,相应的饱和吸附量分别为3.48 mg/g和3.27 mg/g,较天然锰矿各自提高了1.25 mg/g和1.21 mg/g。改性锰矿对As(Ⅲ)的吸附符合Freundlich等温吸附模型,对As(Ⅴ)的吸附更符合Langmuir等温吸附模型。 |
| 关 键 词： | TiCl4 改性 锰矿 除砷 机理 |
ARSENIC REMOVAL EFFICIENCY AND MECHANISM OF TITANIUM MODIFIED MANGANESE ORE |
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| Liu Xiuying Huang Yongbing Wang Lili Li Xiaojuan Tu Shuxin. ARSENIC REMOVAL EFFICIENCY AND MECHANISM OF TITANIUM MODIFIED MANGANESE ORE[J]. Environmental Engineering, 2011, 29(6): 46-49. DOI: 10.13205/j.hjgc.201106014 | |
| Authors: | Liu Xiuying Huang Yongbing Wang Lili Li Xiaojuan Tu Shuxin |
| Affiliation: | Liu Xiuying1 Huang Yongbing1 Wang Lili1 Li Xiaojuan1 Tu Shuxin2(1.College of Natural Resource and Environment Engineering in Wuhan University of Technology,Wuhan 430070,China,2.College of Resource and Environment of Huazhong Agricultural University,China) |
| Abstract: | Natural manganese ore is a kind of As removal mineral and is low-cost and widely available.In order to enhance its removal efficiency and adsorption quantity of arsenic,this paper adopted TiCl4 to modify natural manganese ore and optimized the conditions of modification.The results showed that the best modification condition was: TiCl4 at a concentration of 10 mg/L,dipping time of 18h,pH 3.05,reaction time of 60 min;under these conditions,the removal rates of As(Ⅲ) and As(Ⅴ) respectively reached 94.87% and 99.31%,compared with natural manganese ore(82.95% and 77.93%).The saturated adsorption quantity of As(Ⅲ) and As(Ⅴ) reached 3.48 mg/g and 3.27 mg/g,each increasing by 1.25 mg/g and 1.21 mg/g.The adsorption of As(Ⅲ) by modified manganese ore fits the Freundlich adsorption isotherm,while As(Ⅴ) fits the Langmuir adsorption isotherm best. |
| Keywords: | TiCl4 modification manganese ore arsenic removal mechanism |
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