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化工学报  2015 

低浓度纳米颗粒在剪切流中扩散、吸附的简单模型

DOI: 10.11949/j.issn.0438-1157.20140912, PP. 132-141

Keywords: 自转,吸附,污染物,扩散,时间,模型

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Abstract:

剪切流场中粒子扩散、吸附的微观机理探索为提高分离、传递等典型化工过程的效率提供理论依据。针对旋流分离过程中低浓度污染物纳米颗粒在剪切流场中被螯合剂大颗粒(又称吸附大颗粒)吸附及扩散过程构建近似理论模型,研究了污染物颗粒扩散及螯合剂捕集吸附与剪切流速度的关系。结果表明,剪切流的存在对于颗粒的吸附过程起到强化的效果,剪切流速度越大效果越强,而吸附的方向(朝向或远离吸附大颗粒)只取决于吸附大颗粒及溶液的特性,此外低浓度污染物纳米颗粒被捕集吸附的过程主要与颗粒的扩散有关。推导了扩散时间的简洁解析表达式,扩散时间与吸附大颗粒浓度的4/3次方呈反比,与粒子的体积大小呈正比。剪切流对吸附的影响及捕集吸附时间的估算,为物理化学吸附结合旋流分离处理污染物等技术开发提供理论指导。

References

[1]  Zhang K M, Wen Z G. Review and challenges of policies of environmental protection and sustainable development in China [J]. Journal of Environmental Management, 2008, 88: 1249-1261
[2]  Liu Q. The environment quality and economics growth in China—a literature review and discussion [D]. Stockholm, Sweden: KTH Industrial Engineering and Management, 2012
[3]  Sun Tieheng (孙铁珩), Zhou Qixing (周启星), Li Peijun (李培军). Pollution Ecology (污染生态学) [M]. Beijing: Science Press, 2001: 1-2
[4]  Shi Yunhai (施云海), Wang Yanli (王艳莉), Peng Yangfeng (彭阳峰), Peng Changjun (彭昌军). Chemical Engineering Thermodynamics (化工热力学)[M]. Shanghai: East China University of Science and Technology Press, 2007
[5]  Zhang Jianmei (张建梅). Treatment techniques of wastewater with heavy metal [J]. Journal of Xi'an United University (西安联合大学学报), 2003,6:55-59
[6]  Huang Jianguo (黄建国), Zhang Yongxiang (张永详), Lü Sihao (吕斯濠). Summary on treatment of containing heavy mental wastewater [J]. World Geology (世界地质), 1999, 18 (4):83-86
[7]  Xu Ying (徐颖), Zhang Fang (张方). Experimental study of wastewater treatment with heavy metal chelating agents [J]. JournaI of Hohai University: NaturaI Sciences (河海大学学报: 自然科学版). 2005, 33 (2):153-156
[8]  Yuan Huixin (袁惠新), Zeng Yizhong (曾艺忠), Yang Zhongfeng (杨中锋). Status and application perspectives of hydrocyclones for liquid-liquid separation [J]. Chemical Engineering & Machinery (化工机械), 2002, 29 (6): 359-370
[9]  Bai Zhishan (白志山), Wang Hualin (汪华林), Mao Dan (毛丹). A review of the liquid-solid separation technology for catalytic cracking slurry [J]. Chemical Engineering & Machinery (化工机械), 2007, 34 (4): 229-232
[10]  Bai Z, Wang H, Tu S T. Removal of catalyst particles from oil slurry by hydrocyclone [J]. Separation Science and Technology, 2009, 44 (9): 2067-2077
[11]  Su Hua (苏华), Bai Zhishan (白志山). Application of centrifugal extractor in amidation liquid separation [J]. Chemical Industry and Engineering Progress (化工进展), 2010, 29 (11): 2203-2206
[12]  Lis Dan, Backus Ellen H G, Hunger Johannes, et al. Liquid flow along a solid surface reversibly alters interfacial chemistry [J]. Science, 2014, 344: 1138-1142
[13]  Stone H A, Kim S. Microfluidics: basic issues, applications, and challenges [J]. AIChE Journal, 2001, 47 (6): 1250-1254
[14]  Bagchi B, Thirunmalai D. Freezing of a colloidal liquid subject to shear flow [J]. Physical Review A, 1988, 37: 2530-2538
[15]  Noskov S Y, Im W, Roux B. Ion permeation through the α-hemolysin channel: theoretical studies based on Brownian dynamics and Poisson-Nernst-Plank electrodiffusion theory [J]. Biophsical Journal, 2004, 87: 2299-2309
[16]  Koyama T, Neretnieks I, Jing L. A numerical study on differences in using Navier-Stokes and Reynolds equations for modeling the fluid flow and particle transport in single rock fractures with shear [J]. International Journal of Rock Mechanics and Mining Sciences, 2008, 45: 1082-1101
[17]  Shelukhin V V. A shear flow problem for the compressible Navier-Stokes equations [J]. International Journal of Non-linear Mechanics, 1998, 33: 247-257
[18]  Ren W Q, Weinan E. Contact line dynamics on heterogeneous surfaces [J]. Physics of Fluids, 2011, 23: 72-103
[19]  ANON. EPA Priority Pollutant Rules Taking Shape [J]. Chemical and Engineering News Archive, 1978, 56 (39): 41-48
[20]  Zhou Wenmin (周文敏), Fu Deqian (傅德黔), Sun Zongguang (孙宗光). Determination of black list of China's priority pollutants in water [J]. Research of Envirornmental Science (环境科学研究), 1991, 4 (6): 9-12
[21]  Zhou Wenmin (周文敏). Environmental Priority Pollutants (环境优先污染物)[M]. Beijing: China Environmental Science Press, 1989: 11-13
[22]  Li Yumei (李玉美), Ban Rui (班睿). Current pollution situation and research progress of persistent organic pollutants in water environment of China [J]. Guizhou Agricultural Sciences (贵州农业科学), 2011, 39 (1): 231-236
[23]  Dai Gance (戴干策), Ren Decheng (任德呈), Fan Zihui (范自晖). Introduction to Transport Phenomena (传递现象导论)[M]. Beijing: Chemical Industry Press, 2008: 75-79
[24]  Lin Fusheng (林富生), Huang Qibai (黄其柏), Huang Xinle (黄新乐). A survey of the dynamic investigation in non-inertial systems [J]. Journal of Wuhan University of Technology: Information & Management Engineering (武汉理工大学学报: 信息与管理工程版), 2007, 29 (4): 67-71
[25]  Chen Minheng (陈敏恒), Cong Dezi (丛德滋), Fang Tunan (方图南), Qi Mingzhai (齐鸣斋). Principles of Chemical Industry (化工原理) [M]. 3rd ed. Beijing: Chemical Industry Press, 2006
[26]  Kumar P, Starr F W, Buldyrev S V, et al. Effect of water-wall interaction potential on the properties of nanoconfined water [J]. Physical Review E, 2007, 75 (1): 011202
[27]  Lu M. A simulation of pollutant dispersion swirl field numerical methods [P]: CN, 2013078913A2. 2013-06-06
[28]  Peng Longsheng (彭龙生), Zhang Yu (张羽), Lu Zhunwei (卢准炜), Ren Wansen (任万森). Distribution characteristics of solid grains in spiral pipe flow [J]. Journal of Hydraulic Engineering (水利学报), 2010 (10): 78-81
[29]  Li Hong (李洪), Xu Weilin (许唯临), Li Kefeng (李克锋), Li Jia (李嘉). Study on particle diffusion coefficient of turbulent shear flow in open channel [J]. Journal of Hydraulic Engineering (水利学报), 2002 (8): 552-560
[30]  Emik S. Preparation and characterization of an IPN type chelating resin containing amino and carboxyl groups for removal of Cu(Ⅱ) from aqueous solutions [J]. Reactive and Functional Polymers, 2014, 75: 63-74
[31]  Ahmed S A, Soliman E M. Silica coated magnetic particles using microwave synthesis for removal of dyes from natural water samples: synthesis, characterization, equilibrium, isotherm and kinetics studies [J]. Applied Surface Science, 2013, 284: 23-32
[32]  Mi X, Huang G, Xie W, et al. Preparation of graphene oxide aerogel and its adsorption for Cu2+ ions [J]. Carbon, 2012, 50 (13): 4856-4864

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