TREATMENT OF Cr(Ⅲ) WASTE-WATER WITH EMULSION LIQUID MEMBRANE
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YU Xiaojiao;YAO Binghua;ZHOU Xiaode
Online:
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乳化液膜法处理含Cr(Ⅲ)废水
余晓皎;姚秉华;周孝德
西安理工大学应用化学系,陕西 西安 710048
Abstract: The transfer behavior of Cr(Ⅲ) through the emulsion liquid membrane system of TBP-Span80-atoleine -kerosene was studied.The effects of membrane phase component, pH value in external phase, concentration of H2SO4 in internal phase,ratio of emulsion-water (Rew)and coexisting ions on the transport rate of Cr(Ⅲ) were investigated.The results showed that the transport rate of Cr(Ⅲ)could reach 99.5% under the optimun conditions of 7%TBP, 5%Span80, 4% atoleine, 84%kerosene, 1.0 mol8226;L-1 H2SO4 in internal phase and pH 3.5 in external phase.This method was applied to the treatment of Cr(Ⅲ) waste-water, and the residual concentration of Cr(Ⅲ) could be reduced to 1.0 mg8226;L-1 ,which was below the national standard of waste-water discharge.
YU Xiaojiao;YAO Binghua;ZHOU Xiaode.
余晓皎;姚秉华;周孝德.
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https://hgxb.cip.com.cn/EN/Y2004/V55/I10/1736