How surface tension of surfactant solutions influences the characteristics of sprays produced by hydraulic nozzles used for pesticide application

Ellis, M. C. B.; Tuck, C. R.; Miller, P. C. H.

doi:10.1016/s0927-7757(00)00776-7

Cited by 77 publications

(45 citation statements)

References 12 publications

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“…The filter pore size was 7 µm unless otherwise noted. The mixed stream was then sent through cooling coils and passed over a static mixer, both of which were submerged in a 40 into ambient (21°C < T < 25°C) air. The capillary tubing nozzle was mounted external to the cooler via a bulkhead reducing union sealed within a hole drilled in the cooler wall and was insulated with four layers of pipe insulation to minimize ambient heating of the cooled stream as it passed through the nozzle.…”

Section: Methodsmentioning

confidence: 99%

“…The addition of selected surfactants has been shown to increase the stability of ejected aqueous sprays. 39,40 Although the addition of surfactants leads to reduced surface tension, surfactants may act to hinder instability growth or increase the maximum sustainable amplitude of instability, thereby reducing the tendency of the ejected spray to break up. 40 3.6.…”

Section: Effect Of Additives On Spray Pattern Experimental Conditionmentioning

confidence: 99%

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Improving Water Spray Efficacy for Fire Suppression via CO₂ Addition at High Pressures and Low Temperatures: Evidence for CO₂ Clathrate Hydrate Formation

Hunter

Dierdorf

et al. 2006

Ind. Eng. Chem. Res.

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This paper describes a technique for achieving a compact aqueous spray that incorporates CO 2 into the spray at low temperatures (T < 10°C) and high pressures (P > 10 MPa). A high-pressure spray apparatus was used to explore the effects of temperature (4-25°C), nominal CO 2 mole fraction (0-0.12), in-line filter pore size (0.5-7 µm), and additives on the high-pressure (12-19 MPa) water spray patterns. Divergence of the high-pressure H 2 O-CO 2 spray was significantly reduced at low temperatures, with addition of sodium lauryl sulfate or aqueous film-forming foam (AFFF), and with a small-pore-size (0.5 µm) filter. The observed trends, based on digital images, can be explained by the formation of CO 2 clathrate hydrate within the continuous-flow system. The concepts discussed herein may be applied to conventional H 2 O/AFFF fire-suppression systems, where the introduction of CO 2 as a foaming agent can increase fire-suppression efficacy.

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Section: Methodsmentioning

confidence: 99%

Section: Effect Of Additives On Spray Pattern Experimental Conditionmentioning

confidence: 99%

Improving Water Spray Efficacy for Fire Suppression via CO₂ Addition at High Pressures and Low Temperatures: Evidence for CO₂ Clathrate Hydrate Formation

Hunter

Dierdorf

et al. 2006

Ind. Eng. Chem. Res.

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“…Pharmaceutical aerosols may be formulated as solutions, suspensions, emulsions and powders. Physicochemical characteristics of the active ingredient, particle size and shape of the drug and concentration of surface-active agent used are important formulation factors (49). Aerosols could be generated using nebulization of aqueous drug solutions, suspension or dispersion or by using a dry powder formulation administered by a metered dose inhaler (50).…”

Section: Nasal Aerosolsmentioning

confidence: 99%

Impact of Surface Tension in Pharmaceutical Sciences

2009

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-Surface chemistry has a large influence in many industries. In the life sciences, surface area is gaining importance in the characterization of materials during their development, formulation and manufacturing. The chemical activity, adsorption, dissolution, and bioavailability of a drug may depend on the surface of the molecule. In order to meet manufacturing challenges and develop new and better performing products with improved qualities, knowledge of surface tension is of utmost importance. An attempt has been made in this paper to review the application of interfacial tension in the key domains of pharmaceutical applications.

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“…On the other hand, it is well known that physico-chemical properties of pesticide solutions affect the distribution pattern (Butler-Ellis et al, 2001). For these reasons, this paper is aimed at generating mathematical models of these relationships using different commercial pesticides that are commonly employed in citrus cultivated in Spain.…”

Section: Introductionmentioning

confidence: 99%

Development of models to predict product deposition from coverage obtained on artificial collectors and their practical application

Garcerá¹,

Moltó²,

Chueca³

2014

Span. j. agric. res.

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Models to relate the observed coverage on artificial collectors used in field tests (water-sensitive paper, WSP) and in laboratory bioassays of citrus pests (pieces of polyvinyl chloride sheets, PVC) with product deposition are described. Different solutions of plant protection products commonly used for pest control in citrus were sprayed in a Potter Tower on PVC and WSP under the same controlled conditions. These experiments led to the formulation of different basic models to relate coverage and deposition depending on the products and collectors. The best fitting model was selected from among those that had highest coefficients of determination (R 2 ) and lowest estimation error (RMSEP), and at the same time resulted in a normal distribution of residuals. Finally, coverage on pieces of PVC sheets was related with coverage obtained on WSP by different equations depending on the product being applied. Such equations can be used to link laboratory and field results in order to assess the quality of a spray application in citrus cultivation.

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How surface tension of surfactant solutions influences the characteristics of sprays produced by hydraulic nozzles used for pesticide application

Cited by 77 publications

References 12 publications

Improving Water Spray Efficacy for Fire Suppression via CO₂ Addition at High Pressures and Low Temperatures: Evidence for CO₂ Clathrate Hydrate Formation

Improving Water Spray Efficacy for Fire Suppression via CO₂ Addition at High Pressures and Low Temperatures: Evidence for CO₂ Clathrate Hydrate Formation

Impact of Surface Tension in Pharmaceutical Sciences

Development of models to predict product deposition from coverage obtained on artificial collectors and their practical application

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How surface tension of surfactant solutions influences the characteristics of sprays produced by hydraulic nozzles used for pesticide application

Cited by 77 publications

References 12 publications

Improving Water Spray Efficacy for Fire Suppression via CO2 Addition at High Pressures and Low Temperatures: Evidence for CO2 Clathrate Hydrate Formation

Improving Water Spray Efficacy for Fire Suppression via CO2 Addition at High Pressures and Low Temperatures: Evidence for CO2 Clathrate Hydrate Formation

Impact of Surface Tension in Pharmaceutical Sciences

Development of models to predict product deposition from coverage obtained on artificial collectors and their practical application

Contact Info

Product

Resources

About

Improving Water Spray Efficacy for Fire Suppression via CO₂ Addition at High Pressures and Low Temperatures: Evidence for CO₂ Clathrate Hydrate Formation

Improving Water Spray Efficacy for Fire Suppression via CO₂ Addition at High Pressures and Low Temperatures: Evidence for CO₂ Clathrate Hydrate Formation