The relationship between the adhesion work, the wettability and composition of the surface layer in the systems polymer/aqueous solution of anionic surfactants and alcohol mixtures

The decomposition of chlorophenols in aqueous solution with UV-illuminated TiO2 suspensions in the presence of manganese ions was studied. It was found that the removal rate of chlorophenols would be the highest at pH 3 in the presence of 1.18×10−4 M manganese ion. The effect of ionic strength on the 2-CP decomposition can be ignored in the range from 0.1 to 0.005 M for NaClO4. This study is also to explore the relationship between the adsorption rate and reaction rate. Results showed that the more the adsorption rate the more the decomposition rate for the three chlorophenols. Manganese ions can increase the photocatalytic oxidation of 2-chlorophenol in terms of DOC. The relationship between temperature and reaction rate for 2-CP is k = 0.0043T - 1.2146.

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Interlayer structure and magnetic field-induced orientation of modified nanoclays in polymer aqueous solution

Heliyon ◽

10.1016/j.heliyon.2019.e02421 ◽

2019 ◽

Vol 5 (9) ◽

pp. e02421 ◽

Cited By ~ 1

Author(s):

Min Kwan Kang ◽

Eun Jung Cha ◽

Hyun Hoon Song ◽

Yang Ho Na

Keyword(s):

Magnetic Field ◽

Aqueous Solution ◽

Interlayer Structure ◽

Polymer Aqueous Solution

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Removal of cationic heavy metal from aqueous solution by activated carbon impregnated with anionic surfactants

Journal of Hazardous Materials ◽

10.1016/j.jhazmat.2008.09.036 ◽

2009 ◽

Vol 164 (2-3) ◽

pp. 1130-1136 ◽

Cited By ~ 165

Author(s):

Chi K. Ahn ◽

Donghee Park ◽

Seung H. Woo ◽

Jong M. Park

Keyword(s):

Aqueous Solution ◽

Heavy Metal ◽

Activated Carbon ◽

Anionic Surfactants

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Study on the Characteristics of Flow and Heat Transfer of Polymeric-Fluid-Based Cu Nanofluids

Volume 1B, Symposia: Fluid Measurement and Instrumentation; Fluid Dynamics of Wind Energy; Renewable and Sustainable Energy Conversion; Energy and Process Engineering; Microfluidics and Nanofluidics; Development and Applications in Computational Fluid Dynamics; DNS/LES and Hybrid RANS/LES Methods ◽

10.1115/fedsm2017-69006 ◽

2017 ◽

Author(s):

Weihua Cai ◽

Yongyao Li ◽

Yue Wang ◽

Xin Zheng ◽

Mengsheng Zhu

Keyword(s):

Heat Transfer ◽

Aqueous Solution ◽

Shear Stress ◽

Wall Shear Stress ◽

Drag Reduction ◽

Volume Fraction ◽

Solution Flow ◽

Flow And Heat Transfer ◽

Wall Shear ◽

Polymer Aqueous Solution

In this paper, we propose a new fluid: drag-reducing-fluid-based nanofluids (DRFBN), i.e., nanoparticles are added into polymer aqueous solution. In order to investigate the flow and heat transfer characteristics of this new fluid, the Reynolds stress turbulence model and equivalent viscosity model are used in the simulations. Wall shear stress and Nusselt number (Nu) are chosen to represent the effects of drag reduction and heat enhancement respectively. The numerical studies mainly focus on the effects of different parameters on wall shear stress and Nu. The results show that comparison with water flow, DRFBN flow still has remarkable drag-reducing effect; comparison with polymer aqueous solution flow, DRFBN flow has some improvement on heat transfer. Therefore, DRFBN has duel effects: drag reduction and heat transfer enhancement. Besides, it is found that the parameters of nanoparticle volume fraction, Reynolds number and drag-reducing parameter have remarkable effects on wall shear stress and Nu of DRFBN flow.

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