中国工程科学
中國工程科學
중국공정과학
ENGINEERING SCIENCE
2014年
7期
57-61
,共5页
张兵涛%张林%黄和%侯立安
張兵濤%張林%黃和%侯立安
장병도%장림%황화%후립안
正渗透%离子液体%纤维素膜%相转化%膜制备
正滲透%離子液體%纖維素膜%相轉化%膜製備
정삼투%리자액체%섬유소막%상전화%막제비
forward osmosis%ionic liquid%cellulose membrane%phase inversion%mem-brane preparation
以纤维素(cellulose)为膜材料,离子液体1-乙基-3甲基咪唑醋酸盐(EMIMAc)为溶剂,水为非溶剂,无纺布作为支撑层,通过相转化法制备了纤维素均质膜。采用红外、X-射线衍射和扫描电子显微镜表征了膜的结构及形貌,考察了该膜的正渗透性能。结果表明:纤维素溶解再生过程中没有发生化学变化,但晶型发生了转变;当原料液为0.6 mol/L的氯化钠水溶液,汲取液为特制的营养液时,所制备的正渗透膜的水通量为3.534 L/(m2· h),截盐率达到99%以上。
以纖維素(cellulose)為膜材料,離子液體1-乙基-3甲基咪唑醋痠鹽(EMIMAc)為溶劑,水為非溶劑,無紡佈作為支撐層,通過相轉化法製備瞭纖維素均質膜。採用紅外、X-射線衍射和掃描電子顯微鏡錶徵瞭膜的結構及形貌,攷察瞭該膜的正滲透性能。結果錶明:纖維素溶解再生過程中沒有髮生化學變化,但晶型髮生瞭轉變;噹原料液為0.6 mol/L的氯化鈉水溶液,伋取液為特製的營養液時,所製備的正滲透膜的水通量為3.534 L/(m2· h),截鹽率達到99%以上。
이섬유소(cellulose)위막재료,리자액체1-을기-3갑기미서작산염(EMIMAc)위용제,수위비용제,무방포작위지탱층,통과상전화법제비료섬유소균질막。채용홍외、X-사선연사화소묘전자현미경표정료막적결구급형모,고찰료해막적정삼투성능。결과표명:섬유소용해재생과정중몰유발생화학변화,단정형발생료전변;당원료액위0.6 mol/L적록화납수용액,급취액위특제적영양액시,소제비적정삼투막적수통량위3.534 L/(m2· h),절염솔체도99%이상。
The-nonporous-homogeneous-cellulose-membrane-for-forward-osmosis-was-pre-pared-via-phase-inversion-method-using-ionic-liquid-1-ethyl-3-methyl-imidazolium-acetate-(EMI-MAc)-as-solvent,water-as-nonsolvent-on-a-non-woven-fabric-substrate.-The-characterizations-of-Fourier-transform-infrared-(FTIR)-and-X-ray-diffraction-(XRD)-spectroscopies-showed-that-no-obvious-change-occurred-in-the-chemical-structure-of-cellulose-after-membrane-formation,but-the-crystallinity-had-a-certain-degree-of-decline.-The-cross-section-and-the-surface-morphologies-of-the-cellulose-forward-osmosis-membrane-were-analyzed-by-scanning-electron-microscopy-(SEM).-The-membrane-performance-were-investigated-by-measuring-water-flux-and-rejection-of-simulated-seawater.-The-water-flux-of-the-cellulose-forward-osmosis-membrane,which-the-cellu-lose-concentration-is-8%(wt)-in-casting-solution,was-3.534-L/m2-·-h-and-the-rejection-for-NaCl-was-more-than-99%,using-0.6-mol/L-NaCl-solution-as-the-feed-solution-and-lab-made-nutrient-solution-as-the-draw-solution.