کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4989896 1456934 2017 33 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A positively charged composite nanofiltration membrane modified by EDTA for LiCl/MgCl2 separation
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
A positively charged composite nanofiltration membrane modified by EDTA for LiCl/MgCl2 separation
چکیده انگلیسی
For efficient recovery of lithium from brines, a composite nanofiltration (NF) membrane with positively charged skin layer (PA-B) was first synthesized via interfacial polymerization between branched poly(ethylene imine) (BPEI) and trimesoyl chloride (TMC) on the support of crosslinked polyetherimide, and the separation performance was assessed for simulative brine of mixed LiCl/MgCl2 solution. To improve the permselectivity of Li+ against Mg2+, then we adopted EDTA to modify the as-prepared positively charged PA-B NF membrane. The optimal EDTA modified NF membrane PA-B2-E3 showed the separation factor SLi,Mg about 9.2 for the LiCl/MgCl2 mixed solution with a Mg2+/Li+ mass ratio of 24, with excellent stability within 36 h filtration, which would have promising applications in the recovery of Li from brine.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Separation and Purification Technology - Volume 186, 2 October 2017, Pages 233-242
نویسندگان
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