王连军
一直从事水污染控制理论和技术、膜分离理论和技术领域的教学与科学研究。
个性化签名
- 姓名:王连军
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学术头衔:
博士生导师
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学科领域:
环境科学技术基础学科
- 研究兴趣:一直从事水污染控制理论和技术、膜分离理论和技术领域的教学与科学研究。
王连军,男,1961年生,工学博士、教授、博士生指导教师,南京理工大学化工学院院长。中国化学会理事,国务院学位委员会学科评议组成员,兼任中国兵工学会环劳保专业委员会副主任委员、江苏省环境科学学会副理事长、江苏省化学化工学会常务理事、江苏环境科学学会环境治理技术专业委员会主任委员、《生态与农村环境学报》、《南京理工大学学报》(自然科学版)编委。2003年在澳大利亚The University of New South Wales作访问教授。
一直从事水污染控制理论和技术、膜分离理论和技术领域的教学与科学研究。主持了20多项课题及中加等国际合作项目的研究。
获省部级科技进步奖5项。主持完成20多项水处理工程项目的设计、安装与调试。获国家发明专利授权5件、实用新型专利授权4件。在国内外学术刊物上发表学术论文100多篇,与他人合作出版著作1部,教材2部。个人1997年获首届中国环境学会青年科技奖,2000年被国家环保总局等国家部门联合授予“全国环境保护杰出贡献者”称号。1998年应加拿大国际培训基金会邀请作为中加环境合作项目的中方专家赴加培训。历任实验室主任、教研室副主任、环境科学与工程系副主任、主任等职,1994年3月起任化工学院副院长,兼任校环境工程设计研究所所长,化工污染控制教育部工程中心主任。2004年5月起任化工学院院长。
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1904
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793
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成果数
18
【期刊论文】Preparation of alumina membrane from aluminium chloride
王连军, Jiansheng Li, Xiaoyang Wang, Lianjun Wang ∗, Yanxia Hao, Youla Huang, Ye Zhang, Xiuyun Sun, Xiaodong Liu
Journal of Membrane Science 275(2006)6-11,-0001,():
-1年11月30日
Anewmethod for the preparation of y-alumina membranes from aluminium chloridewas investigated in this paper. Boehmite solwas synthesized by an anionic exchange method, which could offer OH−-ion and simultaneously remove Cl−-ion. Boehmite sols were then deposited on the inner surface of the hollow fiber supports by a filtration technique. The thermal evolution, phase transformation, structure, morphology and pore size distribution of the -alumina membranes were characterized by thermogravimetric analysis (TGA), differential thermal analysis (DTA), X-ray diffraction (XRD), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM) and nitrogen isothermal adsorption measurement. SEM images showed that the membranes were defect-free. Gas permeability tests suggested that the obtained membranes possessed gas selectivity, and its separation factor for H2/N2 and H2/CH4 were 3.31 and 2.25 at 0.1MPa, respectively. The most concentrative pore diameter, pore volume and specific surface area of an unsupported membrane calcinated at 600 ◦C were 3.7 nm, 0.18 ml/g and 176.9m2/g, respectively.
Alumina membranes, Ion exchange, Sol-gel, Preparation
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王连军, Wang Haifang, Wang Lianjun *, Sun Xiuyun, Li Jiansheng, Yu Wendun
Applied Surface Science 252(2006)8494-8498,-0001,():
-1年11月30日
Taking advantage of Fourier transform infrared spectrum and X-ray photoelectron spectroscopy, the researcher has conducted a contrastive research on the surface molecular structure of porous PVDF membrane before and after modification. Research results indicate that, though the C-F characteristic peak of the PVDF membrane still exists after modification, the peak is obviously flat, which indicates that the content of F atom decreases evidently; the results also indicate that hydroxyl characteristic peak is sharper, which indicates the content of O atom increases evidently. This proves that chemical binding force has been produced by chemical reactions on the surface of PVDF membrane during the modification. The coexistence of C-F functional group with C-OH one on the surface of PVDF membrane after modification proves that the surface features of the PVDF membrane have been successfully altered. Combination of Fourier transform infrared spectrum with X-ray photoelectron spectroscopy is proved an effective approach for analyzing the surface structure of the membrane.
PVDF membrane, Molecular structure, Fourier transform infrared spectrum, X-ray photoelectron spectroscopy
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【期刊论文】Preparation and characterization of Al2O3 hollow fiber membranes
王连军, Li Jiansheng, Wang Lianjun ∗, Hao Yanxia, Liu Xiaodong, Sun Xiuyun
Journal of Membrane Science 256(2005)1-6,-0001,():
-1年11月30日
α-Al2O3 hollow fibers were prepared by a phase-inversion method combined with the reaction bonded aluminum oxide (RBAO) process. Next, -Al2O3 membranes, which were fabricated by a sol–gel process, were cast on the outer surface of the hollow fiber supports. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), thermogravimetric analysis (TGA), X-ray diffraction (XRD), nitrogen isothermal absorption measurements and gas permeability testing were used to characterize the supports andα-Al2O3 membranes. The results showed that the mechanical strength of hollow fiber supports is better than that of non-RBAO hollow fiber, and their porosity and mean pore size were 50.1% and 0.88μm, respectively. SEM images ofα-Al2O3 membranes showed that the membranes were defect-free. The most concentrative pore diameter and the specific surface area ofα-Al2O3 membranes were about 4.5 nm and 228.9m2/g, respectively. Gas permeability tests suggested that theα-Al2O3 membranes possessed gas selectivity, and the separation factor for N2/Ar are 1.133 at 0.3MPa and 1.139 at 0.4MPa, respectively, which is slightly smaller than the value expected from the ideal Kundsen diffusion (α=1.194).
RBAO, α-Al2O3 hollow fiber, α-Al2O3 membrane, Preparation, Characterization
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王连军, Li Jiansheng, Wang Lianjun*, Hao Yanxia, Liu Xiaodong, Sun Xiuyun
Journal ofMembrane Science 256 (2005) 1-6,-0001,():
-1年11月30日
α-Al2O3 hollow fibers were prepared by a phase-inversion method combined with the reaction bonded aluminum oxide (RBAO) process. Next, γ-Al2O3 membranes, which were fabricated by a sol-gel process, were cast on the outer surface of the hollow fiber supports. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), thermo gravimetric analysis (TGA), X-ray diffraction (XRD), nitrogen isothermal absorption measurements and gas permeability testing were used to characterize the supports and γ-Al2O3 membranes. The results showed that the mechanical strength of hollow fiber supports is better than that of non-RBAO hollow fiber, and their porosity and mean pore size were 50.1% and 0.88μm, respectively. SEM images of γ-Al2O3 membranes showed that the membranes were defect-free. The most concentrative pore diameter and the specific surface area of γ-Al2O3 membranes were about 4.5 nm and 228.9 m2/g, respectively. Gas permeability tests suggested that the γ-Al2O3 membranes possessed gas selectivity, and the separation factor for N2/Ar are 1.133 at 0.3MPa and 1.139 at 0.4MPa, respectively, which is slightly smaller than the value expected from the ideal Kundsen diffusion (α=1.194).
RBAO, α-Al2O3 hollow fiber, γ-Al2O3 membrane, Preparation, Characterization
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王连军, Jiangang Lu, Lianjun Wang, * Xiuyun Sun, Jiansheng Li, and Xiaodong Liu
Ind. Eng. Chem. Res. 2005, 44, 9230-9238,-0001,():
-1年11月30日
A membrane gas absorption (MGA) process was evaluated in this work for CO2 capture from CO2/N2 gas-mixed streams at room temperature. The experimental study of a polypropylene (PP) hollow fiber membrane contactor in combination with the technique of CO2 absorption into aqueous solutions of activated methyl diethanolamine (MDEA) and MDEA as absorbents was carried out. A laboratory-scale setup, in which the solution with CO2 loading was able to be hot-regenerated into the solution without CO2 loading and used circularly, was established in this study. The effects of a variety of operation factors, such as gas and liquid flow rates, membrane pore-wetting, and liquid CO2 loading, on the separation performance of the membrane contactor were investigated. The absorption performances were compared between activated MDEA and MDEA. A mathematical model was developed to simulate the mass-transfer behavior of the membrane gas-liquid contactor. The experimental results show that the use of a membrane gas-liquid contactor with improved alkanol amines such as activated MDEA can be completely applied to CO2 capture. Low and steady liquid CO2 loading was able to be controlled by hot-regeneration. The CO2 absorption performance of activated MDEA was remarkably better than that of MDEA. The CO2 removal efficiency could reach more than 99% with activated MDEA. The average overall mass-transfer coefficient with activated MDEA was 2.25 times that with MDEA. The activator piperazine (PZ), even with a small quantity in the activated MDEA, plays a significant role in the improvement of mass transfer in MGA. A comparison of model estimations with experimental results indicates that estimations of the non wetting mode are divaricated from experimental data. Taking partial-wetting of the membrane into account, the model simulation is validated with experimental data. Partial-wetting can result in significant membrane resistance to mass transfer in MGA.
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王连军, Yue Cheng, Lian-Jun Wang*, Jian-Sheng Li, Yu-Chuan Yang, Xiu-Yun Sun
Materials Letters 59 (2005) 3427-3430,-0001,():
-1年11月30日
Nanosized ZSM-5 zeolite was successively synthesized in the absence of organic template by hydrothermal method. About 15 nm ZSM-5 zeolite was synthesized at 180℃ for 24h after stirring at high speed and aging in the synthesis mixture with the molar composition of 12Na2O:1OOSiO2: 2Al2O3:2500 H2O. X-ray diffraction (XRD) confirmed ZSM-5 crystal phase. Transmission electron microscopy (TEM) showed that ZSM-5 zeolite crystal sizes are about 15 nm. The electron diffraction spectroscopy (EDS) shows nanosized ZSM-5 zeolites chemical element compound. Fourier transform infrared (FTIR) analysis further showed that they are pentacyclic with typical absorption summit of ZSM-5 at about 550 cm-1. Differential thermal analysis and thermogravimetry analysis (DTA/TG) showed that, at room temperature to 1073 K, nanosized ZSM-5 mass loss is 5.836%.
Nanosized, Synthesis, ZSM-5 zeolite, X-ray techniques, Mechanism
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王连军, 陆建刚, 刘晓东, 李健生, 孙秀云
高等学校化学报,2005,26(5)912~917,-0001,():
-1年11月30日
根据双膜理论提出了疏水性膜湿润机理,关联了阻力层方程、Laplace方程和膜孔径分布函数,建立了新型传质数学模型,采用PP疏水性微孔膜、水和MDEA(N-甲基二乙醇胺)水溶液为吸收剂,研究了膜接触器吸收CO2传质过程,考察了压差、表面张力和温度等因素所产生的湿润率对传质性能的影响。结果表明,用新型模型能较准确地预测湿润率对传质系数的影响,模型值与实验值符合较好;压差、表面张力和温度对湿润率影响较大,是膜接触器传质过程需要考虑的因素。
湿润率, 疏水性膜, 传质系数, 数学模型
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王连军, 李健生, 缪丽娜, 郝艳霞, 苗小郁, 成岳, 孙秀云, 刘晓东
高等学校化学学报2005,26(4):702~705,-0001,():
-1年11月30日
采用SXRD,HRTEM,FTR,SEM和氮气吸附等测试手段对膜结构、形貌、孔径及其分布进行了表征SXRD和HRTEM结果显示,所制备的膜具有短程有序结构. SEM 分析发现膜表面完整,气体渗透实验表明,担载膜具有一定的气体选择性,在0.1M Pa下对H2/N2和CH4/N2的分离因子分别为2.25和1.56,气体透过膜孔的扩散由努森机制所控制.等温氮气吸附实验显示,经500℃热处理后氧化硅膜的最可几孔径小于3.34nm,非担载膜的比表面积为919.8m2/g,孔容为0.43mL/g
氧化硅膜, 中空纤维, 制备, 结构
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【期刊论文】纳米氧化物粒子对PVDF中空纤维膜结构与性能的影响
王连军, 李健生, 王连军*, 梁, 王慧雅, 孙秀云, 刘晓东
环境科学,2005,26(3):126~129,-0001,():
-1年11月30日
采用相转化法制备纳米氧化物/聚偏氟乙烯复合中空纤维膜,讨论了纳米氧化钛和氧化铝粒子对PVDF膜结构和性能的影响。应用牛血清白蛋白截留实验、扫描电子显微镜、傅立叶红外光谱分别对不同膜的分离性能、微观结构和晶相组成进行了分析,结果表明,复合膜的性能与纯PVDF膜相比有显著地改善,其中纯PVDF膜、Al2O3/PVDF和TiO2/PVDF复合膜对牛血清白蛋白的截留率分别为3.27%、67.20%和86.67%,复合膜的水通量则较纯PVDF膜分别提高2.3倍和2.6倍。氮气吸附实验测定的孔径分布进一步表明复合膜的孔径分布变窄,孔径变小。
氧化钛, 氧化铝, 聚偏氟乙烯, 复合中空纤维膜, 结构
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王连军, 陆建刚, 刘晓东, 孙秀云, 李健生
化工学报2005,56(8):1399~1444,-0001,():
-1年11月30日
建立了膜基复合溶液吸收CO2传质微分方程模型,模型中考虑了MDEA-AMP复合溶剂吸收反应交互作用和溶剂对膜孔的湿润性两种因素,模拟了这两种因素、不同气液速及不同组件对传质过程的影响,通过SEM摄片考察了溶剂对膜结构形态的影响。结果表明:交互作用和湿润性是影响传质过程不可忽略的重要因素;MDEA和AMP的增强因子对总增强因子不具有加和性;湿润使膜相阻力迅速上升,成为传质阻力的主导项;高液速时膜孔易被湿润:SEM摄片发现溶剂使膜孔增大,长时间运行疏水性膜有亲水化趋势。考虑交互因子β和湿润率η的模型,模型值与实验值符合更好。
膜气体吸收, 复合溶液, 交互作用, 湿润性, 模拟
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