scholarly journals Applying Nanoscale Kirkendall Diffusion for Template-Free, Kilogram-Scale Production of SnO2 Hollow Nanospheres via Spray Drying System

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Jung Sang Cho ◽  
Hyeon Seok Ju ◽  
Yun Chan Kang
2017 ◽  
Vol 53 (2) ◽  
pp. 400-403 ◽  
Author(s):  
S. A. Shah ◽  
T. Habib ◽  
H. Gao ◽  
P. Gao ◽  
W. Sun ◽  
...  

The shape of Ti3C2TxMXenes can be altered using spray drying, providing a new route for controlling MXene nanosheet morphology.


Energies ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 5622
Author(s):  
Diana L. Tinoco-Caicedo ◽  
Alexis Lozano-Medina ◽  
Ana M. Blanco-Marigorta

Instant coffee is produced worldwide by spray drying coffee extract on an industrial scale. This production process is energy intensive, 70% of the operational costs are due to energy requirements. This study aims to identify the potential for energy and cost improvements by performing a conventional and advanced exergy and exergoeconomic analysis to an industrial-scale spray drying process for the production of instant coffee, using actual operational data. The study analyzed the steam generation unit, the air and coffee extract preheater, the drying section, and the final post treatment process. The performance parameters such as exergetic efficiency, exergoeconomic factor, and avoidable investment cost rate for each individual component were determined. The overall energy and exergy efficiencies of the spray drying system are 67.6% and 30.6%, respectively. The highest rate of exergy destruction is located in the boiler, which amounts to 543 kW. However, the advanced exergoeconomic analysis shows that the highest exergy destruction cost rates are located in the spray dryer and the air heat exchanger (106.9 $/h and 60.5 $/h, respectively), of which 47.7% and 3.8%, respectively, are avoidable. Accordingly, any process improvement should focus on the exergoeconomic optimization of the spray dryer.


1997 ◽  
Vol 15 (3-4) ◽  
pp. 1023-1043 ◽  
Author(s):  
Fernando Perez-Munor ◽  
Rolando A. Flores
Keyword(s):  

2004 ◽  
Vol 16 (11) ◽  
pp. 933-937 ◽  
Author(s):  
Y. Hu ◽  
X. Jiang ◽  
Y. Ding ◽  
Q. Chen ◽  
C. Z. Yang

2014 ◽  
Vol 9 (6) ◽  
pp. 1655-1662 ◽  
Author(s):  
Gan Tian ◽  
Longsheng Duan ◽  
Xiao Zhang ◽  
Wenyan Yin ◽  
Liang Yan ◽  
...  

2019 ◽  
Vol 7 (10) ◽  
pp. 477 ◽  
Author(s):  
Floriane Gaucher ◽  
Valérie Gagnaire ◽  
Houem Rabah ◽  
Marie-Bernadette Maillard ◽  
Sylvie Bonnassie ◽  
...  

Propionibacterium freudenreichii is a beneficial bacterium, used both as a probiotic and as a cheese starter. Large-scale production of P. freudenreichii is required to meet growing consumers’ demand. Production, drying and storage must be optimized, in order to guarantee high P. freudenreichii viability within powders. Compared to freeze-drying, spray drying constitutes the most productive and efficient, yet the most stressful process, imposing severe oxidative and thermal constraints. The aim of our study was to provide the tools in order to optimize the industrial production of dry P. freudenreichii. Bacterial adaptation is a well-known protective mechanism and may be used to improve bacterial tolerance towards technological stresses. However, the choice of bacterial adaptation type must consider industrial constraints. In this study, we combined (i) modulation of the growth medium composition, (ii) heat-adaptation, and (iii) osmoadaptation, in order to increase P. freudenreichii tolerance towards technological stresses, including thermal and oxidative constraints, using an experimental design. We further investigated optimal growth and adaptation conditions, by monitoring intracellular compatible solutes accumulation. Glucose addition, coupled to heat-adaptation, triggered accumulation of trehalose and of glycine betaine, which further provided high tolerance towards spray drying and storage. This work opens new perspectives for high quality and fast production of live propionibacteria at the industrial scale.


Author(s):  
Zunhao Zhang ◽  
Junxia Zhang ◽  
Wei Tian ◽  
Hui Zheng ◽  
Xinyang Cao ◽  
...  

2012 ◽  
Vol 1 (3) ◽  
pp. 191-196 ◽  
Author(s):  
Pai Lu ◽  
Dongfeng Xue

2002 ◽  
Vol 2002 (0) ◽  
pp. 67-68
Author(s):  
Tsutomu Kinjo ◽  
Takehiro Nosoko ◽  
Takashi Nagata ◽  
Satoru Gima

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