超親水PVDF@C-TA@CaCO3膜制備及油水分離性能
作者:楊勝1， 孟曉榮1,2， 陳嘉智1， 朱俊鋒1， 王旭東2,3（1.西安建筑科技大學(xué) 化學(xué)與化工學(xué)院，陜西 西安 710055；2.陜西省膜分離技術(shù)研究院，陜西 西安 710055；3.西安建筑科技大學(xué) 環(huán)境與市政工程學(xué)院，陜西 西安 710055）
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[1]楊勝,孟曉榮,陳嘉智,等.超親水PVDF@C-TA@CaCO3膜制備及油水分離性能[J].中國(guó)給水排水,2022,38(15):14-20.
YANGSheng,MENGXiao-rong,CHENJia-zhi,et al.Preparation of Superhydrophilic PVDF@C-TA@CaCO3 Membrane and Its Oil?water Separation Performance[J].China Water & Wastewater,2022,38(15):14-20.點(diǎn)擊復(fù)制
超親水PVDF@C-TA@CaCO3膜制備及油水分離性能
中國(guó)給水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第38卷 期數(shù): 2022年第15期 頁(yè)碼: 14-20 欄目: 出版日期: 2022-08-01
Title:Preparation of Superhydrophilic PVDF@C-TA@CaCO3 Membrane and Its Oil?water Separation Performance
作者:楊勝1， 孟曉榮1,2， 陳嘉智1， 朱俊鋒1， 王旭東2,3（1.西安建筑科技大學(xué) 化學(xué)與化工學(xué)院，陜西 西安 710055；2.陜西省膜分離技術(shù)研究院，陜西 西安 710055；3.西安建筑科技大學(xué) 環(huán)境與市政工程學(xué)院，陜西 西安 710055）
Author(s):YANG Sheng1， MENG Xiao-rong1，2， CHEN Jia-zhi1， ZHU Jun-feng1， WANG Xu-dong2，3（1. School of Chemistry and Chemical Engineering， Xi’an University of Architecture and Technology， Xi’an 710055， China； 2. Shaanxi Membrane Separation Technology Research Institute， Xi’an 710055， China； 3. School of Environmental and Municipal Engineering， Xi’an University of Architecture and Technology， Xi’an 710055， China）
Keywords:polyvinylidene fluoride (PVDF) microfiltration membrane; superhydrophilicity; biomimetic mineralization; calcium carbonate (CaCO3); emulsified oil-water separation
摘要:采用仿生礦化法在羧基化單寧酸修飾的聚偏氟乙烯（PVDF）微濾膜表面沉積CaCO3顆粒，制備了超親水性PVDF@C-TA@CaCO3膜。以水接觸角和純水通量為指標(biāo)，考察礦化液（CaCl2和Na2CO3溶液）濃度和交替浸漬次數(shù)對(duì)PVDF@C-TA@CaCO3膜的影響。結(jié)果表明，隨著礦化液濃度和交替浸漬次數(shù)的增加，PVDF@C-TA@CaCO3膜的水接觸角逐漸下降，純水通量先上升后下降。當(dāng)?shù)V化液濃度為0.15 mol/L、交替浸漬次數(shù)為10次時(shí)，PVDF@C-TA@CaCO3膜的純水通量達(dá)到最高即5 750 L/（m2·h），水接觸角降為10°。PVDF@C-TA@CaCO3膜對(duì)植物油、環(huán)己烷和石油醚乳化液的截留率分別為90.5%、93.3%和91.5%，通量恢復(fù)率分別為88.5%、94.4%和95.5%，顯示出良好的乳化油水分離性能。
Abstract:Biomimetic mineralization method was employed to deposit CaCO3 particles on the surface of carboxylated tannic acid modified polyvinylidene fluoride (PVDF) microfiltration membrane to prepare superhydrophilic PVDF@C-TA@CaCO3 membrane. The effects of concentration of mineralized solution (CaCl2?and Na2CO3 solutions) and alternate impregnation times on PVDF@C-TA@CaCO3 membrane were investigated by using water contact angle and pure water flux as evaluation indexes. With the increase of the concentration of mineralized solution and the number of alternate impregnation, the water contact angle of PVDF@C-TA@CaCO3 membrane decreased gradually, and the pure water flux increased first and then decreased. When the concentration of mineralized solution was 0.15 mol/L and alternate impregnation for 10 times, the pure water flux of PVDF@C-TA@CaCO3 membrane reached the maximum of 5 750 L/(m2·h), and the water contact angle decreased to 10°. The retention rates of PVDF@C-TA@CaCO3 membrane to vegetable oil, cyclohexane and petroleum ether emulsion were 90.5%, 93.3% and 91.5%, respectively, and the flux recovery rates were 88.5%, 94.4% and 95.5%, respectively, showing good separation performance of oil-water mixture.
更新日期/Last Update: 2022-08-01
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[1]楊勝,孟曉榮,陳嘉智,等.超親水PVDF@C-TA@CaCO3膜制備及油水分離性能[J].中國(guó)給水排水,2022,38(15):14-20.
YANGSheng,MENGXiao-rong,CHENJia-zhi,et al.Preparation of Superhydrophilic PVDF@C-TA@CaCO3 Membrane and Its Oil?water Separation Performance[J].China Water & Wastewater,2022,38(15):14-20.
點(diǎn)擊復(fù)制
YANGSheng,MENGXiao-rong,CHENJia-zhi,et al.Preparation of Superhydrophilic PVDF@C-TA@CaCO3 Membrane and Its Oil?water Separation Performance[J].China Water & Wastewater,2022,38(15):14-20.
超親水PVDF@C-TA@CaCO3膜制備及油水分離性能
中國(guó)給水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第38卷 期數(shù): 2022年第15期 頁(yè)碼: 14-20 欄目: 出版日期: 2022-08-01
- Title:
- Preparation of Superhydrophilic PVDF@C-TA@CaCO3 Membrane and Its Oil?water Separation Performance
- Keywords:
- polyvinylidene fluoride (PVDF) microfiltration membrane; superhydrophilicity; biomimetic mineralization; calcium carbonate (CaCO3); emulsified oil-water separation
- 摘要:
- 采用仿生礦化法在羧基化單寧酸修飾的聚偏氟乙烯（PVDF）微濾膜表面沉積CaCO3顆粒，制備了超親水性PVDF@C-TA@CaCO3膜。以水接觸角和純水通量為指標(biāo)，考察礦化液（CaCl2和Na2CO3溶液）濃度和交替浸漬次數(shù)對(duì)PVDF@C-TA@CaCO3膜的影響。結(jié)果表明，隨著礦化液濃度和交替浸漬次數(shù)的增加，PVDF@C-TA@CaCO3膜的水接觸角逐漸下降，純水通量先上升后下降。當(dāng)?shù)V化液濃度為0.15 mol/L、交替浸漬次數(shù)為10次時(shí)，PVDF@C-TA@CaCO3膜的純水通量達(dá)到最高即5 750 L/（m2·h），水接觸角降為10°。PVDF@C-TA@CaCO3膜對(duì)植物油、環(huán)己烷和石油醚乳化液的截留率分別為90.5%、93.3%和91.5%，通量恢復(fù)率分別為88.5%、94.4%和95.5%，顯示出良好的乳化油水分離性能。
- Abstract:
- Biomimetic mineralization method was employed to deposit CaCO3 particles on the surface of carboxylated tannic acid modified polyvinylidene fluoride (PVDF) microfiltration membrane to prepare superhydrophilic PVDF@C-TA@CaCO3 membrane. The effects of concentration of mineralized solution (CaCl2?and Na2CO3 solutions) and alternate impregnation times on PVDF@C-TA@CaCO3 membrane were investigated by using water contact angle and pure water flux as evaluation indexes. With the increase of the concentration of mineralized solution and the number of alternate impregnation, the water contact angle of PVDF@C-TA@CaCO3 membrane decreased gradually, and the pure water flux increased first and then decreased. When the concentration of mineralized solution was 0.15 mol/L and alternate impregnation for 10 times, the pure water flux of PVDF@C-TA@CaCO3 membrane reached the maximum of 5 750 L/(m2·h), and the water contact angle decreased to 10°. The retention rates of PVDF@C-TA@CaCO3 membrane to vegetable oil, cyclohexane and petroleum ether emulsion were 90.5%, 93.3% and 91.5%, respectively, and the flux recovery rates were 88.5%, 94.4% and 95.5%, respectively, showing good separation performance of oil-water mixture.
更新日期/Last Update: 2022-08-01
