The coating surface and agglomeration of seed particles in a fluidized bed coater

Kage, Hiroyuki; Takahashi, Tôru; Yoshida, Takayuki; Ogura, Hironao; Matsuno, Yasunari

doi:10.1016/s0921-8831(08)60576-2

Cited by 11 publications

(5 citation statements)

References 4 publications

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“…The apparent difference in morphology of the SP-CPB0.5 relative to that of unmodified SPs is related to the presence of a bound CPB at the surface of SPs. The surface-bound CPB surfactant may contribute to alteration of the hydrophile–lipophile balance (HLB) of the interface, in agreement with the larger granule size and agglomeration of the CPB-doped SPs due to hydrophobic interactions, as noted in Figure b. , …”

Section: Resultssupporting

confidence: 60%

“…The surface-bound CPB surfactant may contribute to alteration of the hydrophile–lipophile balance (HLB) of the interface, in agreement with the larger granule size and agglomeration of the CPB-doped SPs due to hydrophobic interactions, as noted in Figure 1b. 45,46…”

Section: Resultsmentioning

confidence: 99%

“…The surface-bound CPB surfactant may contribute to alteration of the hydrophile−lipophile balance (HLB) of the interface, in agreement with the larger granule size and agglomeration of the CPB-doped SPs due to hydrophobic interactions, as noted in Figure 1b. 45,46 XPS. X-ray photoelectron spectroscopy (XPS) is a useful method for gaining information regarding the state of chemical structure of biopolymer materials.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

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Water Vapor Adsorption–Desorption Behavior of Surfactant-Coated Starch Particles for Commercial Energy Wheels

et al. 2019

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This study reports on the adsorption (dehumidification)–desorption (humidification) behavior of cetylpyridinium bromide (CPB) coated starch particles (SPs), denoted as SP-CPB, as a potential desiccant material for air-to-air energy exchangers. CPB is a cationic surfactant with antibacterial activity that can be used to modify the surface properties of SPs, especially at variable CPB loading levels (SP-CPB0.5, SP-CPB2.5, and SP-CPB5.0, where the numeric suffix represents the synthetic loading level of CPB in mM). The SP-CPB0.5 sample displayed optimal surface area and pore structure properties that was selected for water sorption isotherm studies at 25 °C. The CPB-coated SPs sample (SP-CPB0.5) showed an improved water vapor uptake capacity compared to unmodified starch (SPs) and other desiccant systems such as high amylose starch (HAS15) and silica gel (SG13). Single-step and cyclic water vapor sorption tests were conducted using a small-scale exchanger coated with SP-CPB0.5. The calculated latent effectiveness values obtained from direct measurements using cyclic tests (65.4 ± 2%) agree closely with the estimated latent effectiveness from single-step tests (64.6 ± 2%) at controlled operating conditions. Compared to HAS15- and SG13-coated exchangers, the SP-CPB0.5-coated exchanger performed much better at controlled operating conditions, along with improved longevity due to the CPB surface coating. The presence of CPB did not attenuate the uptake properties of native SPs. Latent effectiveness of SP-CPB0.5-coated exchanger was enhanced (5–30% higher) over that of the SG13- or HAS15-coated exchangers, according to the wheel angular speed. This study reports on a novel and sustainable SP-CPB0.5 material as a promising desiccant coating with tunable uptake and surface properties with potential utility in air-to-air energy exchangers for ventilation systems.

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Section: Resultssupporting

confidence: 60%

Section: Resultsmentioning

confidence: 99%

Section: ■ Results and Discussionmentioning

confidence: 99%

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Water Vapor Adsorption–Desorption Behavior of Surfactant-Coated Starch Particles for Commercial Energy Wheels

et al. 2019

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“…A multitude of possible problems are likely to be encountered in a fluidized based technology and a few are highlighted here. Wet quenching of fluidized bed due to liquid bridge formation between core particles leading to agglomeration is a common phenomenon 203–206. Premature droplet evaporation may likely occur before droplet adhesion onto the surface of the core particles 207, 208.…”

Section: General Processing Issuesmentioning

confidence: 99%

Fluidization technologies: Aerodynamic principles and process engineering

Dixit

Puthli

2009

Journal of Pharmaceutical Sciences

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“…With respect to fluidised bed coating, a multitude of problems and side-effects are likely to be encountered. First, liquid bridge formation between core particles could result in agglomeration and ultimately, in wet quenching of the fluidised bed (Kage, Takahashi, Yoshida, Ogura, & Matsuno, 1998;Saleh, Cherif, & Hemati, 1999;Smith & Nienow, 1983). Second, depending on the droplet travel distance and process air evaporative capacity, premature droplet evaporation is likely to occur before droplet adhesion onto the surface of the core particles (Jones, 1985;Smith & Nienow, 1983;.…”

Section: Introductionmentioning

confidence: 99%

Combined population balance and thermodynamic modelling of the batch top-spray fluidised bed coating process. Part I—Model development and validation

Ronsse

Pieters

Dewettinck

2007

Journal of Food Engineering

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The coating surface and agglomeration of seed particles in a fluidized bed coater

Cited by 11 publications

References 4 publications

Water Vapor Adsorption–Desorption Behavior of Surfactant-Coated Starch Particles for Commercial Energy Wheels

Water Vapor Adsorption–Desorption Behavior of Surfactant-Coated Starch Particles for Commercial Energy Wheels

Fluidization technologies: Aerodynamic principles and process engineering

Combined population balance and thermodynamic modelling of the batch top-spray fluidised bed coating process. Part I—Model development and validation

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