Effect of dispersed phase feed time on the droplet size of Pickering emulsions produced in a stirred tank

Donmez D., AYRANCI TANSIK İ.

AICHE JOURNAL, cilt.66, sa.6, 2020 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 66 Sayı: 6
  • Basım Tarihi: 2020
  • Doi Numarası: 10.1002/aic.16942
  • Dergi Adı: AICHE JOURNAL
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Agricultural & Environmental Science Database, Applied Science & Technology Source, Aqualine, Chimica, Communication Abstracts, Compendex, Computer & Applied Sciences, INSPEC, Metadex, Pollution Abstracts, DIALNET, Civil Engineering Abstracts
  • Anahtar Kelimeler: feed time, impeller type, liquid-liquid-solid mixing, Pickering emulsions, stirred tanks, TURBULENCE ENERGY-DISSIPATION, FLOW, VESSELS, DISTRIBUTIONS, PARTICLES, TURBINE
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

The aim of this study was to investigate the effect of feed time of the oil phase on the average droplet size of Pickering emulsions produced in stirred tanks. Three types of impellers were tested: RT, up-pumping PBT (PBTU), and down-pumping PBT (PBTD). All the impellers were tested at two sizes, T/3 and T/2. All configurations were compared at constant tip speed, power per mass, and impeller Reynolds number. The droplet diameters were measured in Mastersizer (R) 3,000 (Malvern). The results showed that an increase in feed time causes a reduction in the average droplet size. At lower impeller speeds and higher feed times, the effect is more pronounced. It was found that some other geometric parameters also have an impact on the average droplet size.