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| N235萃取含盐酸性废水中的盐酸 | |
| 引用本文： | 徐道林,刘云,王萍,董元华,李欣欣.N235萃取含盐酸性废水中的盐酸[J].化工环保,2012,32(3):209-212. |
| 作者姓名： | 徐道林 刘云 王萍 董元华 李欣欣 |
| 作者单位： | 1. 兰州交通大学化学与生物工程学院,甘肃兰州730070;中国科学院南京土壤研究所土壤与农业可持续发展国家重点实验室,江苏南京210008 2. 中国科学院南京土壤研究所土壤与农业可持续发展国家重点实验室,江苏南京,210008 3. 兰州交通大学化学与生物工程学院,甘肃兰州,730070 4. 兰州交通大学环境与市政工程学院,甘肃兰州,730070 |
| 摘 要： | 以N235为萃取剂、甲苯为稀释剂萃取模拟含盐酸性废水(简称废水)中的盐酸。最佳实验条件为:振荡时间20 min,初始废水中盐酸浓度0.75～2.45 mol/L,V(N235):V(N235+甲苯)=0.3～0.7,V(N235+甲苯):V(废水)=0.5～1.0。在初始废水中盐酸浓度为1.00 mol/L、不含无机盐、V(N235):V(N235+甲苯)=0.4、V(N235+甲苯):V(废水)=1.0的条件下,振荡20 min后萃取液中盐酸浓度为0.80 mol/L、n(盐酸):n(N235)=0.88。当废水中氯化钠浓度大于2.0 mol/L时,氯化钠的加入对N235萃取盐酸有促进作用;硫酸钠的加入对N235萃取盐酸具有抑制作用。 |
| 关 键 词： | 萃取 有机胺 甲苯 相比 盐酸 氯化钠 硫酸钠 综合利用 |
Extraction of Hydrochloride from Saline Acidic Wastewater with N235 |
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| Xu Daolin , Liu Yun , Wang Ping , Dong Yuanhua , Li Xinxin.Extraction of Hydrochloride from Saline Acidic Wastewater with N235[J].Environmental Protection of Chemical Industry,2012,32(3):209-212. | |
| Authors: | Xu Daolin Liu Yun Wang Ping Dong Yuanhua Li Xinxin |
| Affiliation: | 1.School of Chemical and Biological Engineering,Lanzhou Jiaotong University,Lanzhou Gansu 730070,China;2.State Key Laboratory of Soil and Sustainable Agriculture,Institute of Soil Science,Chinese Academy of Sciences,Nanjing Jiangsu 210008,China;3.School of Environmental and Municipal Engineering,Lanzhou Jiaotong University,Lanzhou Gansu 730070,China) |
| Abstract: | Hydrochloric acid was extracted from the simulated saline acidic wastewater using N235 as extractant and toluene as diluent.The optimum conditions are as follows:oscillation time 20 min,initial concentration of hydrochloric acid in the wastewater 0.75-2.45 mol/L,V(N235)∶V(N235+toluene)=0.30.7,V(N235+toluene)∶V(wastewater)=0.5-1.0.Under the conditions of initial mass concentration of hydrochloric acid in the wastewater 1.00 mol/L,no inorganic salt,V(N235)∶V(N235+toluene)=0.4,V(N235+toluene)∶V(wastewater)=1.0 and oscillation time 20 min,the concentration of hydrochloric acid in the extract is 0.80 mol/L and n(hydrochloric acid)∶n(N235)=0.88.The extraction effect of N235 on hydrochloric acid can be promoted by sodium chloride with more than 2.0 mol/L of concentration,but inhibited by sodium sulfate. |
| Keywords: | extraction organic amine toluene phase ratio hydrochloric acid sodium chloride sodium sulfate comprehensive utilization |
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