Application of nanofiltration to treat rare earth element(neodymium) containing water
来源期刊：Journal of Rare Earths2011年第10期
论文作者：Z.V.P.Murthy Anshul Choudhary
文章页码：974 - 978
摘 要：The scope of present work was to study the feasibility of a commercial nanofiltration（NF） membrane to reject Nd（III） ions fromsynthetic aqueous solution.The permeates were analyzed using inductively coupled plasma-atomic emission spectrometry（ICP-AES） to findNd（III） concentration.Experimental results indicated that the Nd（III） rejection increased with increase in applied pressure and feed flow rate;and decreased with increase in feed concentration.Rejection of Nd（III） ions using NF membrane were widely influenced by solution pH dueto the charged nature of the membrane which changed with the variation in pH.The use of a surfactant（sodium dodecyl sulphate） in aqueoussolution resulted in its adsorption on the membrane surface,thereby changing membrane characteristics,and in turn influencing the rejection.The complexation step induced had also increased the rejection to a greater extent by forming [Nd-EDTA]-complex thereby increasing itsmolecular weight and thus increasing rejection.
Z.V.P.Murthy，Anshul Choudhary
Department of Chemical Engineering,S.V.National Institute of Technology,Surat-395007,Gujarat,India
摘 要：The scope of present work was to study the feasibility of a commercial nanofiltration（NF） membrane to reject Nd（III） ions fromsynthetic aqueous solution.The permeates were analyzed using inductively coupled plasma-atomic emission spectrometry（ICP-AES） to findNd（III） concentration.Experimental results indicated that the Nd（III） rejection increased with increase in applied pressure and feed flow rate;and decreased with increase in feed concentration.Rejection of Nd（III） ions using NF membrane were widely influenced by solution pH dueto the charged nature of the membrane which changed with the variation in pH.The use of a surfactant（sodium dodecyl sulphate） in aqueoussolution resulted in its adsorption on the membrane surface,thereby changing membrane characteristics,and in turn influencing the rejection.The complexation step induced had also increased the rejection to a greater extent by forming [Nd-EDTA]-complex thereby increasing itsmolecular weight and thus increasing rejection.
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