scholarly journals INFLUENCE OF MALTODEXTRIN AS A STRUCTURAL ADDITIVE ON THE PROCESS OF DRYING DROPS OF PHOSPHOLIPID SUSPENSIONS

2018 ◽  
Vol 40 (4) ◽  
pp. 19-24
Author(s):  
T.Y. Turchina ◽  
E.K. Zhukotskiy ◽  
L. Y. Avdeeva ◽  
A.A. Makarenko
Keyword(s):  
Heat Transfer ◽  
Spray Drying ◽  
Dry Matter ◽  
Powder Form ◽  
Disperse Systems ◽  
Drying Time ◽  
Adhesion Properties ◽  
Engineering Parameters ◽  
Single Droplets ◽  
Gas Medium

Emulsions with phospholipid nanostructures are heterogeneous disperse systems, which, when dried, show thermoplastic and adhesion properties. Improvement of their structure-forming and conducting properties in spray drying requires the use of structuring additives. The purpose of the work was to investigate the effect of maltodextrin on the process of heat transfer by drying single droplets of emulsions with phospholipid nanostructures in order to determine the rationale heat-engineering parameters of powder form production. Emulsions with phospholipid nanostructures and maltodextrin in different proportions of solids from 10% to 40% were investigated on the system of "drop-vapor-gas medium" in the stream of heated heat-carrier. The processes of forming, structuring and deformation changes of droplets during drying, the manifestation of thermoplastic and adhesion properties of dried particles under the influence of high temperatures and cooling were studied. It was established that with the content of dry matter of 20-30% and the ratio of lecithin and maltodextrin-trine as 1: 1, it is achieved by reducing the drying time of droplets of emulsions with phospholipid nanostructure-ram by 25-30%, and the strengthening of the structure of dried particles is provided by cooling them. References9, figures 3.

Influence of the spray drying operating conditions on the estimated drying kinetics of emulsion single droplets and the properties of microencapsulated chia oil

2021 ◽  
Vol 383 ◽  
pp. 302-317
Author(s):  
M. Gabriela Bordón ◽  
Noelia P.X. Alasino ◽  
Vanina Martínez ◽  
Regina Gauna Peter ◽  
Ramiro Iturralde ◽  
...  
Keyword(s):  
Spray Drying ◽  
Drying Kinetics ◽  
Operating Conditions ◽  
Single Droplets ◽  
Kinetics Of ◽  
Chia Oil

scholarly journals Preparation of Hollow Silica by Spray Drying of Nano Silica Particles and Its Heat Transfer Property

2012 ◽  
Vol 22 (10) ◽  
pp. 531-538 ◽  
Author(s):  
Chan Ki Youn ◽  
Hyung Mi Lim ◽  
Sujin Cha ◽  
Dae Sung Kim ◽  
Seung-Ho Lee
Keyword(s):  
Heat Transfer ◽  
Spray Drying ◽  
Silica Particles ◽  
Nano Silica ◽  
Transfer Property ◽  
Hollow Silica ◽  
Heat Transfer Property

Research Needs: Industrial Spray Processes, Spray Drying, and Heat Transfer

1988 ◽  
Vol 41 (10) ◽  
pp. 365-370 ◽  
Author(s):  
William S. Janna
Keyword(s):  
Heat Transfer ◽  
Mass Transfer ◽  
High Pressure ◽  
Spray Drying ◽  
Research Needs ◽  
Comprehensive Model ◽  
Research Topics ◽  
Transfer Processes ◽  
Mass Transfer Processes ◽  
Enhance Mass

A survey of researchers and of manufacturers of spraying, drying, and spray heat transfer equipment was conducted. Those that responded provided descriptions of processes and devices that need developmental attention. Several of these problems are described here (eg, a unifying theory of how atomization takes place; a method of evaluating the performance of a spray used to dissolve air in water to enhance mass transfer processes; a comprehensive model for predicting heat transfer from high pressure sprays; etc). It is concluded that many research topics can be gleaned from industry as needs develop and innovative ways are found for sprays to replace conventional methods.

Losses from cattle faeces during chemical analysis

1974 ◽  
Vol 14 (71) ◽  
pp. 716 ◽  
Author(s):  
L Falvey ◽  
A Woolley
Keyword(s):  
Dry Matter ◽  
Nitrogen Loss ◽  
Routine Method ◽  
Drying Time ◽  
Sample Digestion ◽  
Faecal Material ◽  
Kjeldahl Method ◽  
Cattle Faeces ◽  
Nitrogen Contents

The effects of drying temperature and method of sample digestion on the determination of nitrogen and dry matter in the faeces of cattle grazing pastures of two different nitrogen contents were examined. Nitrogen loss varied from 8 to 20 per cent depending on the temperatures and associated length of drying time. The variation in the loss between samples from animals grazing the two pastures was small, tending to be higher for the samples taken from animals grazing a higher nitrogen pasture. Sample digestion by the H2SO4-H2O2 method was found to be as satisfactory as the micro-Kjeldahl method. Drying at 100�C for 24 hours gave the least loss of nitrogen. This procedure in conjunction with the H2SO4-H2O2 , digestion is proposed as a routine method for determination of nitrogen in faecal material.

WEATHER EFFECTS ON HAY DRYING RATES

1974 ◽  
Vol 54 (3) ◽  
pp. 479-484 ◽  
Author(s):  
H. N. HAYHOE ◽  
L. P. JACKSON
Keyword(s):  
Moisture Content ◽  
Dry Matter ◽  
Weather Data ◽  
Potential Evaporation ◽  
High Quality ◽  
Drying Time ◽  
Weather Effects ◽  
Maximum Production ◽  
Drying Rates

Observations taken at Nappan, N.S. of drying rates of field-cured hay and the corresponding weather data are reported. Three consecutive good days were chosen as the standard for good hay drying weather. Based on 30 yr of weather records, the highest probability (36%) of having this good weather at Nappan occurs in the first 2 wk of July. Maximum production of digestible dry matter in hay occurs about mid-June. Rapid storage of high quality forage is desirable. To facilitate harvest, early cuttings of forage should be taken as ensilage. An equation is developed which relates the observed moisture content in the field to the accumulation of potential evaporation from the time of cutting. The effect of precipitation on drying time is considered. An index based on potential evaporation and precipitation is proposed as a measure of the suitability of weather data for predicting field drying rates. A good drying day is defined in terms of this index and used in the estimation of the probability of sequences of good drying days from 30 yr of weather data from Nappan, N.S.

Meso-scale studies on the penetration and retention of diluted bitumen in different types of shorelines, Northern British Columbia, Canada

2017 ◽  
Vol 2017 (1) ◽  
pp. 2268-2285 ◽  
Author(s):  
Sonia Laforest ◽  
Patrick Lambert ◽  
John Harper ◽  
Gary Sergy
Keyword(s):  
British Columbia ◽  
Coarse Sand ◽  
Complex Case ◽  
Accelerated Weathering ◽  
Drying Time ◽  
Adhesion Properties ◽  
Different Types ◽  
Maximum Penetration ◽  
Conventional Oil ◽  
Meso Scale

ABSTRACT 2017-210 Compared to conventional oil, diluted bitumen (dilbit) spills in the environment could be challenging due to the rapid increase in density, viscosity and adhesion properties associated with accelerated weathering. To enhance the response in case of an accidental dilbit spill in the marine environment, a Research & Development program has been developed by the Emergencies Science and Technology Section (ESTS) of Environment and Climate Change Canada (ECCC) as a part of the Federal Government’s Enhancing Marine Safety Strategy. One of the goals of this project was to develop science-based decision support for a dilbit spill to the shorelines of northern British Columbia (BC). In response to this objective, the contractor Coastal and Ocean Resources Inc. has conducted a meso-scale Diluted Bitumen Sediment Interactions Experiments (Bit_EX) to evaluate the potential of penetration and retention of dilbit in different types of sediments. In total, two dilbits, Access Western Blend (AWB) and Cold Lake Blend (CLB) at three weathered states (0%, 17% and 26% mass loss), were tested against seven types of sediments (from coarse sand to very large pebble). The adhesion of dilbit on bare cobbles and on cobbles covered with barnacles and seaweed (fucus) was also tested for different time of exposure. Results showed that unweathered (or fresh) dilbit has its maximum penetration and retention in coarse sand or granule whereas moderately weathered dilbit has maximum penetration and retention in small pebbles or larger sediment sizes. Heavily weathered dilbits have very limited penetration in finer sediments but are expected to penetrate and have high retention in permeable coarse sediments. Moreover, we have observed that dilbit adherence could be enhanced with longer drying time. In northern BC, the bedrock platforms with thin overlays of various types of sediment, from sand to boulders, are common and presents a complex case for treatment. Because dilbit characteristics change rapidly, early SCAT survey data combined with rapid decision and operational response in the initial stages of the spill could reduce dilbit retention and adhesion. The Bit_EX also suggests that existing techniques for protection and cleanup of conventional oil on shorelines could be applicable or can be adjusted for dilbit spills. This experiment provides information suitable to a first response guide for protecting and cleaning shorelines in case of bitumen spills in northern BC.

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