[1]韦纯忠,曾思,李冬冬,等.GO-PVP/PVDF渗透膜的热质传递机理和污染特性[J].中国给水排水,2023,39(5):80-87.
　WEI Chun-zhong,ZENG Si,LI Dong-dong,et al.Heat and Mass Transfer Mechanism and Membrane Fouling Characteristics of GO-PVP/PVDF Permeable Membrane[J].China Water & Wastewater,2023,39(5):80-87.
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GO-PVP/PVDF渗透膜的热质传递机理和污染特性

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第39卷 期数: 2023年第5期 页码: 80-87 栏目: 出版日期: 2023-03-01
Title:
Heat and Mass Transfer Mechanism and Membrane Fouling Characteristics of GO-PVP/PVDF Permeable Membrane
作者:
韦纯忠1， 曾思1， 李冬冬1， 梁才航2
（1.广西北投环保水务集团有限公司，广西 南宁 530000；2.桂林电子科技大学 机电工程学院，广西 桂林 541000）
Author(s):
WEI Chun-zhong1， ZENG Si1， LI Dong-dong1， LIANG Cai-hang2
（1. Guangxi Beitou Environmental Protection & Water Group Co. Ltd.， Nanning 530000， China； 2. School of Mechanical and Electrical Engineering， Guilin University of Electronic Technology， Guilin 541000， China）
关键词:
渗透膜;  氧化石墨烯;  传热传质;  疏水性;  膜污染;  分子模拟
Keywords:
permeable membrane;  graphene oxide;  heat and mass transfer;  hydrophobicity;  membrane fouling;  molecular simulation
摘要:
渗透率低和疏水性差是限制渗透膜在膜蒸馏式海水淡化运用中的关键因素。为了提高膜的疏水性且保持高渗透性能，对自制的超疏水氧化石墨烯-聚乙烯吡咯烷酮/聚偏氟乙烯（GO-PVP/PVDF）复合膜进行了热质传递的分子模拟和污染物为腐殖酸（HA）、半胱氨酸（LC）、Ca2+的耐污染实验，并通过Materials Studio（MS）软件建立了膜的传热传质模型。结果表明，GO含量越大膜表面的裂纹越少。左右堆叠形态下复合膜的渗透性能最好且热导率最高，上下堆叠形态下膜性能最差。氢键作用能（Eel）为负值，并导致污染物和膜表面的相互作用能为负值，是污染物富集在膜表面的主要作用力。此外，Ca2+离子会加重膜污染。
Abstract:
Low permeability and poor hydrophobicity are the key factors limiting the application of permeable membranes in the field of seawater desalination. To improve the hydrophobicity and maintain a high permeability of the membrane, the molecular simulation of heat and mass transfer and pollution [pollutants were humic acid (HA), L-cysteine (LC) and Ca2+] resistance experiment of the prepared graphene oxide-polyvinylpyrrolidone/polyvinylidene fluoride (GO-PVP/PVDF) composite membrane were carried out. Then, the heat and mass transfer model of the membrane was established by using Materials Studio (MS) software. The higher content of GO resulted in the less cracks on the membrane surface. The permeability and thermal conductivity of the composite membrane with the left and right stacking mode was the best, while the performance of the composite membrane with the top and bottom stacking mode was the worst. The hydrogen bonding energy (Eel) was negative, which resulted in negative interaction energy between pollutants and the membrane surface, and was the main force for pollutant enrichment on the membrane surface. Furthermore, the addition of Ca2+ aggravated the membrane fouling.

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[1]蒋宝军,孙一文,王新培,等.磁性TiO2/GO复合催化剂处理垃圾渗滤液试验研究[J].中国给水排水,2022,38(3):99.
　JIANGBao-jun,SUNYi-wen,WANGXin-pei,et al.Magnetic Titanium Dioxide/Graphene Oxide Composite Catalyst for Landfill Leachate Treatment[J].China Water & Wastewater,2022,38(5):99.

更新日期/Last Update: 2023-03-01