Research on Optimal Formula of Dustfall Agent to Remove Blasting Smoke

2012 ◽  
Vol 534 ◽  
pp. 298-303
Author(s):  
Wei Niu ◽  
Zhong An Jiang ◽  
Ju Shi Chen
Keyword(s):  
Surface Active Agent ◽  
Sodium Dodecyl ◽  
Active Agent ◽  
Base Material ◽  
Sodium Dodecyl Benzene Sulfonate ◽  
Base Materials ◽  
Surface Active Agents ◽  
Optimal Surface ◽  
Dodecyl Benzene Sulfonate ◽  
Surface Active

In order to reduce dust produced during the blasting, effective measures according to smoke components and properties are required to be taken. The experiment adopted a number of base materials and surface-active agents to reduce the dust in smoke. Besides, corresponding additives were adopted to reduce poisonous and harmful gases during the blasting. Experiments focused on wettability and surface tension, using contrast experiment to determine optimal base material and surface-active agent, and also studied the influence of additives on their performance. The experimental results suggested that： sodium chloride was the optimal base material, sodium dodecyl benzene sulfonate was the optimal surface-active agent, and copper sulphate and ammonium chloride as additives had almost no influence on performance of surface-active agent and base material. Therefore, adding this dustfall agent to the water bag during the blasting can effectively reduce the concentration of smoke.

Study on Sludge-Sump Oil Viscosity Reduction by Surface-Active Agents Emulsification

2011 ◽  
Vol 396-398 ◽  
pp. 1928-1931
Author(s):  
Qing Qing Yang ◽  
Xin Ma ◽  
Xiao Wei Zhang ◽  
Tian Liang Li ◽  
Yong Jun He ◽  
...  
Keyword(s):  
Orthogonal Experiment ◽  
Sodium Dodecyl ◽  
Active Agent ◽  
Reduction Rate ◽  
Sodium Dodecyl Benzene Sulfonate ◽  
Viscosity Reduction ◽  
Process Conditions ◽  
Oil Viscosity ◽  
Surface Active Agents ◽  
Surface Active

This paper studied the effect of temperature, single surface-active agent and anionic/non-ionic surface-active agents to the viscosity of sludge-sump oil, and ditermined the optimum process conditions by orthogonal experiment. The result showed that the viscosity of sludge-sump iol reduced with the increase of temperature when below 50°C, then the viscosity decreased slowly when the temperature is above 50°C. The optimum conditions obtained by orthogonal experiment were: OP-10 0.6%, sodium dodecyl benzene sulfonate (SDBS) 0.3% and water content 35%. The viscosity reduction rate was about 98.80%.

scholarly journals THE PATHOGENESIS OF HYPERLIPEMIA INDUCED BY MEANS OF SURFACE-ACTIVE AGENTS

1956 ◽  
Vol 104 (1) ◽  
pp. 1-13 ◽  
Author(s):  
Robert L. Hirsch ◽  
Aaron Kellner
Keyword(s):  
Surface Active Agent ◽  
Active Agent ◽  
Subcutaneous Injections ◽  
Surface Active Agents ◽  
Triton Wr 1339 ◽  
Surface Active

Mice rendered hyperlipemic by means of intravenous or subcutaneous injections of triton WR 1339 were found to have an increase in the total amount of cholesterol in their bodies. This observation indicates that the injected surface-active agent affects the metabolism of cholesterol and brings about hyperlipemia by augmenting the synthesis of lipides, or by interfering with their degradation or excretion, or by some combination of these factors. The implications of the findings for the pathogenesis of the hyperlipemia induced by triton are discussed further in the accompanying paper (16).

Impacts of Surface-Active Agents on the Crystal Structure of Nano Manganese Oxide

2013 ◽  
Vol 798-799 ◽  
pp. 125-129
Author(s):  
Fu Yun Li ◽  
Jing Wang ◽  
Ying Yang Qin ◽  
Li Zhen Yang
Keyword(s):  
Crystal Structure ◽  
Manganese Oxide ◽  
Hydrothermal Method ◽  
Manganese Oxides ◽  
Surface Active Agent ◽  
Active Agent ◽  
Tween 80 ◽  
Surface Active Agents ◽  
Surface Active ◽  
Addition Amount

The nano manganese oxides were prepared with the hydrothermal method by adding surface-active agent. The influence of the type and addition amount of surface-active agent on the preparation of nano manganese oxides was studied. The products were characterized with XRD. Experimental results show that MnOOH is obtained at 180°C with the addition of N,N,N-trimethyl-1-dodecanaminium bromide, and Mn3O4is obtained at 180 °C with OP Emulsifier or Tween-80 added. Different addition amount of surface-active agent would have diverse effects on the purity of products.

Impact of Hydrophobicity of SiO2 Nanoparticles on Enhancing Properties of Colloidal Gas Aphron Fluids: An Experimental Study

2017 ◽  
Vol 140 (1) ◽  
Author(s):  
Amir Hossein Hassani ◽  
Mohammad Hossein Ghazanfari
Keyword(s):  
Surface Active Agent ◽  
Sodium Dodecyl ◽  
Active Agent ◽  
Silica Nanoparticle ◽  
Sio2 Nanoparticles ◽  
Colloidal Gas Aphron ◽  
Infill Drilling ◽  
Pore Blockage ◽  
Surface Active ◽  
Hydrophobic Sio2

In recent years, colloidal gas aphron (CGA) fluids have been much attended by researchers for their possible application in infill drilling, due to their pore blockage ability. In this study, the possible synergistic effect of silica nanoparticle hydrophobicity in the presence of sodium dodecyl sulfate (SDS), as a surface active agent, on enhancement of properties of CGA fluids was experimentally investigated. Results revealed that the hydrophobicity of nanoparticles, adsorbed at the bubble interface, plays an important role in improving stability and blockage ability at low as well as high pressure/temperature conditions, low shear rate viscosity (LSRV), and return permeability ability of CGA dispersion measured in a special radial sand pack apparatus at different levels of surfactant concentration. It was observed that partially hydrophobic SiO2 nanoparticles (nanosilica coated with KH550-Silane) yield a better performance than both strongly hydrophilic and hydrophobic nanoparticles (silicon dioxide nanopowder coated with 2 wt. % Silane) which confirms what is expected from the particle detachment theory. Optimal SDS concentrations equal to 0.25 wt. % for strongly hydrophilic, and 0.33 wt. % for both strongly hydrophobic and partially hydrophobic SiO2 nanoparticles were also found, which maximize the improving effect of CGA fluids. The superiority of the aphronized fluid improved by partially hydrophobic nanoparticles of SiO2 to CGA fluid stabilized only by surfactant makes the CGA fluids attractive for some industrial and drilling applications.

Development of Nifedipine Amorphous Solid Dispersion Composed of Surface-Active Agents

2021 ◽  
Vol 901 ◽  
pp. 35-39
Author(s):  
Sukannika Tubtimsri ◽  
Yotsanan Weerapol
Keyword(s):  
Surface Active Agent ◽  
Active Agent ◽  
Amorphous Solid ◽  
Drug Dissolution ◽  
Amorphous Solid Dispersion ◽  
Polysorbate 80 ◽  
X Ray ◽  
Surface Active Agents ◽  
Surface Active ◽  
Methacrylate Copolymer

The amorphous solid dispersions (ASDs) containing amino methacrylate copolymer and surface-active agents were prepared to improve the nifedipine (NDP) dissolution. The different types of surface-active agent i.e., polysorbates 80, sodium lauryl sulfate (SLS) and polyethylene glycol (PEG) 400 were used. In order to evaluate the ASDs formulation,powder X-ray diffractometry and thermal analysis to characterize NDP crystallinity in ASDs and the dissolution study of NDP have been performed to compare the dissolution profiles. The ASDs were kept for 6 months to investigate the stability. In the X-ray diffraction pattern, no peak was observed in all samples of ASDs. No peak was found in sample of all ASDs from the thermograms. These results suggest that the drug may be molecularly dispersed in matrix of amino methacrylate copolymer. The drug dissolution at 120 min, from ASDs without surface-active agent and NDP powder were 58.31% and 17.95%, respectively. The dissolved NDP from ASDs composed of SLS, polysorbate 80 and PEG400 were 96.25%, 88.86% and 75.32%, respectively. These results may occur due to the reduction of surface tension, the addition of the low amount of high efficiency of surface-active agent e.g., SLS (compared with PEG400 and polysorbate 80) provided the higher NDP dissolution. The content analysis of NDP in selected ASDs was studied at the end of 3 and 6 months, the NDP content remained unchanged after storage.

Wind-generated waves in thin liquid films with soluble contaminant

1971 ◽  
Vol 45 (3) ◽  
pp. 527-544 ◽  
Author(s):  
F. I. P. Smith ◽  
Alex D. D. Craik
Keyword(s):  
Surface Active Agent ◽  
Active Agent ◽  
Theoretical Work ◽  
Liquid Films ◽  
Stream Flows ◽  
Surface Active Agents ◽  
Air Stream ◽  
Surface Active ◽  
The Stability

Craik (1968) has previously examined the stability of horizontal liquid films when an air stream flows over the liquid surface and when the surface is contaminated by an insoluble surface-active agent. The present theoretical work extends this investigation to examine the role of soluble surface-active agents for cases where the liquid Reynolds number is small. This role is found to be a rather complex one which, under suitable conditions, may be either stabilizing or destabilizing.Related experimental work is described which yields results in qualitative agreement with the theoretical analysis.

The Influence of Different Kinds of Surfactants on Rheology in Polymer/Surfactant Complex Flooding

2013 ◽  
Vol 437 ◽  
pp. 1089-1092
Author(s):  
Wei Lin Cui ◽  
Wu Ju Xu ◽  
Ling Jian Song
Keyword(s):  
Binary System ◽  
Enhanced Recovery ◽  
Surface Active Agent ◽  
Active Agent ◽  
Ionic Surfactant ◽  
Sweep Efficiency ◽  
Surface Active Agents ◽  
Linear Viscoelastic ◽  
Surface Active ◽  
Polymer Surfactant

Because of alkaline declining the sweep efficiency, causing scale formation problem in the reservoir and the well bottom and the tubular pipes, so polymer/surfactant compound flooding technology is the emphasis in the research of enhanced recovery. So the articles study the regulation of different kinds of surface active agents at different temperature by MARS Rheometer. The testing result showed that the variation of viscocity under the interaction between the surface active agent and association polymer according to “three stage” model .The linear viscoelastic region of stress decrease when different surface active agents are put into polymer liquor, and the higher frequency, the better elasticity of polymer liquor. The hydrophobic association between the surface active agents and polymer decrease with a higher temperature, but the ionic surfactant is aggravate. The systematic study of binary system rheology can contribute to correctly understand and apply binary system.

scholarly journals Effect of surface active agent on bubble-electrospun polyacrylonitrile nanofibers

2019 ◽  
Vol 23 (4) ◽  
pp. 2481-2487 ◽  
Author(s):  
Tingting Cheng ◽  
Lan Xu ◽  
Mingdi Wang
Keyword(s):  
Mechanical Property ◽  
Tensile Strength ◽  
Electric Conductivity ◽  
Surface Active Agent ◽  
Sodium Dodecyl ◽  
Active Agent ◽  
Solution Increase ◽  
Surface Active ◽  
Air Nozzle ◽  
Effect Of Surface

Sodium dodecyl benzene sulfonates were used as a surfactant to obtain polyacrylonitrile nanofibers by a modified bubble-electrospinning using a copper cone-shaped air nozzle. The properties of the electrospun solutions were investigated using viscosity meter, conductivity meter and rheometer, and the effects of sodium dodecyl benzene sulfonates concentration on the morphology, mechanical property and production of polyacrylonitrile nanofibers were studied. The results showed the addition of sodium dodecyl benzene sulfonates could effectively decrease the viscosity of the solution, increase the electric conductivity of the solution, and promote the generation of bubbles, which resulted in enhancing tensile strength and decreasing the production of nanofibers.

scholarly journals Ir-Ni based mono and bimetallic nanocrystals: synthesis, characterization and effect of cationic, anionic, and non-ionic stabilizers

2021 ◽  
pp. 209-220
Author(s):  
Anjali Goel ◽  
Shikha Shikha ◽  
Shivani Shivani ◽  
Sudha Tomar
Keyword(s):  
Reduction Method ◽  
Size Range ◽  
Surface Active Agent ◽  
Active Agent ◽  
Spherical Shape ◽  
Particle Size Range ◽  
Surface Active Agents ◽  
Bimetallic Nanocrystals ◽  
Surface Active ◽  
Cationic And Anionic Surfactants

Nickel based bimetallic nanocrystals, iridium-nickel play an imperative role in catalysis, electrocatalysis, and magnetic applications. In the present work Ir-Ni bimetallic nanoalloys were synthesized by modified polyol reduction method with different cationic, anionic, and non-ionic surface active agents like CTAB, SDS, TSC, and PVP. The non-ionic surface active agent PVP produced a better effect on nanoparticle size than cationic and anionic surfactants. The synthesized bimetallic nanocrystals were characterized by UV-Vis, XRD, FTIR, FESEM, and HRTEM techniques. XRD and FTIR verify the nature of synthesized bimetallic nanocrystals and the interaction between stabilizers and nanoparticles. HRTEM studies reveal that the PVP stabilized Ir-Ni (3:1) and Ir-Ni (1:1) bimetallic nanocrystals are small in size and less dispersed. Particle size range of these nanoparticles is from (1.77-2.36) nm. FESEM images show that nanoparticles are in quasi spherical shape. EDX analysis indicates that the resultant particles are core shell structure with Ni core and Ir shell.

scholarly journals Synthesis of Anionic Surface Active Agents Containing Heterocyclic Moiety From Long Chain Fatty Alcohols

2017 ◽  
Vol 13 (10) ◽  
pp. 5935-5943
Author(s):  
Magda.H. Abdellattif ◽  
A.M.F. Eissa ◽  
H.M. Mohamed
Keyword(s):  
Biological Activities ◽  
Surface Active Agent ◽  
Active Agent ◽  
Fatty Alcohols ◽  
Chemical Structures ◽  
Surface Active Agents ◽  
Wetting Power ◽  
Surface Active ◽  
Anionic Surface ◽  
Long Chain

A series of novel groups of anionic surface active agent were synthesized. Synthesis of these surfactants via the reaction of long chain fatty alcohols (octyl, decyl and dodecyl) with maleic anhydride to give monoester. The monoester chloride reacted with amino derivatives of heterocyclic rings followed by addition of NaHSO3 .The surface tension, interfacial tension; Kraft point, emulsifying and wetting power were evaluated. Stability to hydrolysis, biodegradability and biological activities were measured. A comparison studies between the chemical structures and the results were done.   

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