Use of vegetable oil in supported liquid membrane for the transport of Rhodamine B
Use of vegetable oil in supported liquid membrane for the transport of Rhodamine B
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DOI：
10.1016/j.desal.2009.05.017
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发表时间：
2009-12
期刊：
影响因子：
9.9
通讯作者：
G. Muthuraman;T. Teng
中科院分区：
文献类型：
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作者：
G. Muthuraman;T. Teng
研究了罗丹明B （RB）从含氢氧化钠的进料水溶液中通过以植物油为载体的扁平支撑液膜（SLM）片向水条状相的转移。在饲料阶段，罗丹明B的转运速率随氢氧化钠浓度的增加而增加。研究了pH对进料（源）相的影响、带料（收）相硫酸浓度、搅拌速度、初始染料（RB）浓度和温度的影响。研究了膜的转运动力学和稳定性。孔径为1.0µm的聚四氟乙烯（PTFE）比孔径为0.5µm的聚四氟乙烯（PTFE）具有更强的渗透性。pH值为11±0.1的进料液渗透率最高。将初始料液浓度1.06×10−4mol/L完全提取，5h后剥离成0.3mol/L硫酸溶液。将进料溶液的pH从7提高到13±0.1，导致染料渗透从9.81×10−5增加到6.18×10−4cm/s。观察到染料在膜上的通量随搅拌速度的增加而增加。
The transport of Rhodamine B (RB) from aqueous feed solution containing sodium hydroxide through a flat supported liquid membrane (SLM) sheet containing vegetable oil as a carrier to an aqueous strip phase was investigated. The transport rate of Rhodamine B was found to increase with sodium hydroxide concentration in the feed phase. The influence of pH on the feed (source) phase, the effects of sulphuric acid concentration in the strip (receiving) phase, stirring speed, initial dye (RB) concentration and temperature were studied. Transport kinetics and stability of the membrane were also studied. Polytetrafluoroethylene (PTFE) with 1.0µm pore size used as the membrane was found to be more permeable than that with 0.5µm pore size. The feed solution at pH 11±0.1 has the highest permeability. The initial feed solution concentration of 1.06×10−4mol/L was completely extracted and stripped into 0.3mol/L sulphuric acid solution in 5h. Raising of pH in the feed solution from 7 to 13±0.1 leads to an increase in dye permeation from 9.81×10−5to 6.18×10−4cm/s. It was observed that dye flux across the membrane tends to increase with stirring speed.