国产精品视频一区二区三区四,亚洲av美洲av综合av,99国内精品久久久久久久,欧美电影一区二区三区电影

產(chǎn)品推薦:氣相|液相|光譜|質(zhì)譜|電化學(xué)|元素分析|水分測(cè)定儀|樣品前處理|試驗(yàn)機(jī)|培養(yǎng)箱


化工儀器網(wǎng)>技術(shù)中心>其他文章>正文

歡迎聯(lián)系我

有什么可以幫您? 在線咨詢

In Situ Healing of Compromised Membranes via Polyethylenimine-Functionalized Silica Microparticles

來(lái)源:美國(guó)布魯克海文儀器公司   2019年04月16日 09:12  
 作者:Sang-Ryoung Kim, Bezawit A. Getachew, and Jae-Hong Kim

Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06511, United States 

 

 

摘要:Microscale damages to membranes used in large-scale filtration processes for water treatment can result in severe degradation of product water quality. One promising technology to address this issue is in situ healing of compromised membranes via healing agents that are added to the feed side of a membrane system and seal the defect site because of increased hydraulic drag through damage site during filtration. We herein introduce an improved in situ membrane healing method using amine-functionalized silica microparticles that is effective under varying operating conditions, overcoming limitations faced by previous healing agents such as chitosan agglomerates. The silica microparticles are functionalized with branched polyethylenimine (PEI) molecules for efficient interparticle cross-linking with glutaraldehyde. The PEI-decorated silica microparticles (SiO2@PEI MPs) were characterized using scanning electron microscopy, dynamic light scattering, and zeta potential analysis. This study investigates the selective deposition of the SiO2@PEI MPs on the damage area using confocal laser scanning microscopy under variable cross-flow rate (0.52.0 L/min) and flushing time (10 to 30 min) conditions. The in situ healing technique recovered the particle rejection of compromised membranes to 99.1% of the original membranes performance without any flux decline. The results of this study show that the use of SiO2@PEI MPs is a promising and practical approach to ensure membrane process integrity.

免責(zé)聲明

  • 凡本網(wǎng)注明“來(lái)源:化工儀器網(wǎng)”的所有作品,均為浙江興旺寶明通網(wǎng)絡(luò)有限公司-化工儀器網(wǎng)合法擁有版權(quán)或有權(quán)使用的作品,未經(jīng)本網(wǎng)授權(quán)不得轉(zhuǎn)載、摘編或利用其它方式使用上述作品。已經(jīng)本網(wǎng)授權(quán)使用作品的,應(yīng)在授權(quán)范圍內(nèi)使用,并注明“來(lái)源:化工儀器網(wǎng)”。違反上述聲明者,本網(wǎng)將追究其相關(guān)法律責(zé)任。
  • 本網(wǎng)轉(zhuǎn)載并注明自其他來(lái)源(非化工儀器網(wǎng))的作品,目的在于傳遞更多信息,并不代表本網(wǎng)贊同其觀點(diǎn)和對(duì)其真實(shí)性負(fù)責(zé),不承擔(dān)此類作品侵權(quán)行為的直接責(zé)任及連帶責(zé)任。其他媒體、網(wǎng)站或個(gè)人從本網(wǎng)轉(zhuǎn)載時(shí),必須保留本網(wǎng)注明的作品第一來(lái)源,并自負(fù)版權(quán)等法律責(zé)任。
  • 如涉及作品內(nèi)容、版權(quán)等問(wèn)題,請(qǐng)?jiān)谧髌钒l(fā)表之日起一周內(nèi)與本網(wǎng)聯(lián)系,否則視為放棄相關(guān)權(quán)利。
企業(yè)未開(kāi)通此功能
詳詢客服 : 0571-87858618
蕉岭县| 阿克陶县| 遂川县| 普兰店市| 策勒县| 凌云县| 明光市| 克什克腾旗| 湖州市| 石嘴山市| 蒙城县| 渝北区| 阳城县| 将乐县| 韶山市| 铜川市| 五峰| 九台市| 盐山县| 靖州| 鲁甸县| 眉山市| 揭西县| 亳州市| 木兰县| 车险| 罗定市| 临沭县| 西乌珠穆沁旗| 灵丘县| 独山县| 舟山市| 吉林市| 涪陵区| 怀柔区| 泸溪县| 岚皋县| 武宁县| 邵阳市| 周至县| 漠河县|