Effect of foam spray drying process parameters on powder morphology

2018 ◽  
Vol 37 (5) ◽  
pp. 535-545 ◽  
Author(s):  
Artur Lewandowski ◽  
Maciej Jaskulski ◽  
Ireneusz Zbiciński
2006 ◽  
Vol 45 ◽  
pp. 272-275 ◽  
Author(s):  
T. Stoyanova ◽  
F. Matteucci ◽  
Anna L. Costa ◽  
M. Dondi ◽  
F.J. Carda

Ceramic pigments with Cr-doped sphene structure (CaSn1-xCrxSiO5, CaTi1-xCrxSiO5) were synthesized by both spray drying an aqueous solution of precursor salts plus further calcining the resulting powders and conventional ceramic method. The thermal evolution of products was studied by X-Ray Powder Diffraction (XRPD). The powder morphology and chemical composition were analyzed by SEM-EDX. The color efficiency of pigments was evaluated by colorimetric analysis (CIELab system). Results showed that the spray drying process decreased the maximum firing temperature and increased the color efficiency of Cr-doped sphene pigments therefore enhancing a higher reactivity of powders compared with the solid state process.


2015 ◽  
Vol 33 (13) ◽  
pp. 1654-1661 ◽  
Author(s):  
Y. Nikolova ◽  
J. Petit ◽  
A. Gianfrancesco ◽  
C. F. W. Sanders ◽  
J. Scher ◽  
...  

Revista Fitos ◽  
2020 ◽  
Vol 14 (4) ◽  
pp. 469-475
Author(s):  
Lucas Oliveira Rodrigues ◽  
Rachel Andrade de Faria ◽  
Marcos Martins Gouvêa ◽  
Carlos Augusto de Freitas Peregrino ◽  
Elizabeth Valverde Macedo ◽  
...  

Uncaria tomentosa (Willd. ex Schult.) DC. (Cat's claw) is a plant member of the Rubiaceae family, from the Amazon region, and used in traditional medicine as raw material for phytomedicines indicated for arthritis and osteoarthritis. This study aimed to evaluate the spray drying process parameters on the properties of different extracts obtained from Uncaria tomentosa. A reduced 24-1 multifactorial design was applied to evaluate the importance of the equipment variables (pump speed, spray nozzle diameter, air inlet temperature, and atomization airflow rate) in the process. Maltodextrin and acacia gum were used as carriers in a 1:1 (m/m) ratio, considering the solid residue content of the liquid plant extract. Process yield, moisture, and hygroscopicity were evaluated as dependent variables. Higher atomization airflow rate led to higher process yield for powdered dried extracts with maltodextrin. Higher temperature led to lower moisture contents regarding powdered dried extracts with acacia gum. No variable, for any carrier, was considered significant for hygroscopicity. The best spray drying configuration for the desired characteristics (i.e. lower hygroscopicity and moisture) used the larger spray nozzle with a diameter of 1.2 mm and the higher temperature of 150 °C, with both carriers.


2015 ◽  
Vol 11 (3) ◽  
pp. 411-419 ◽  
Author(s):  
Ning Jiang ◽  
Chunquan Liu ◽  
Dajing Li

Abstract The aim of this study was to optimize the spray drying process parameters for sweet corn enzymolysis liquid concentrate (SCELC). Experimental design with inlet temperature (170–190°C), SCELC/maltodextrin (MD) ratio (0.25–4) and inlet feed rate (800–1000 mL h−1) as independent variables was studied to investigate the effects on product responses. The corresponding results showed that an increase in the inlet temperature resulted in sweet corn powder with lower moisture, bulk density, L* value, H° value and higher water solubility index. Meanwhile, an increase in MD ratio brought lower moisture and higher L* value, H° value, water solubility index. It was also found that an increase in the inlet feed rate caused higher moisture and lower water solubility index. The highest production yield was achieved at 42.86% with optimized inlet temperature of 177.66°C, SCELC/MD ratio of 0.84 and inlet feed rate of 834.50 mL h−1. Accordingly, the production yield, moisture content, bulk density, water solubility index, L* and H° value were 42.86%, 3.57%, 0.45 g/cm3, 96.54 g/100 g, 84.46, and 83.54, respectively.


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