3 years ago

Study on the Basic Performance of Three-phase Fluidized Bed Equipment for Solar Photocatalysis–Membrane Separation

Study on the Basic Performance of Three-phase Fluidized Bed Equipment for Solar Photocatalysis–Membrane Separation
Jinshan Du, Li Sha, Chenxi Zou, Xuening Fei, Miaomiao Li, Liping Xie
In this study, three-phase fluidized bed equipment for the solar photocatalysis–membrane separation (E-SPME), comprising solar photocatalytic degradation and membrane separation zones, was first introduced, and the photocatalytic degradation of acid red B wastewater (ARBW) with a TiO2 photocatalyst was investigated using the E-SPME. The experimental results indicated the circulating flow of wastewater between the two zones and the increase in the ARBW photocatalytic degradation efficiency with decreasing membrane flux. The same experimental phenomenon was observed with the change in the aeration rate in the lower water tank from 0.10 to 0.40 m3 h−1, but the degradation efficiency started to decrease with further increase in the aeration rate to 0.50 m3 h−1. The degradation efficiency on a clear day was greater than that on a cloudy day; however, it was significantly improved with the opened UV lamps on a cloudy day. The steady operation of the E-SPME was still possible by the opening of the UV lamps on completely cloudy and clear days with a solar light intensity of <13.0 W m−2. The three-phase fluidized bed equipment couples solar photocatalysis, membrane separation and compound parabolic collector (CPC). The aeration device in the lower water tank not only leads the wastewater into the lower water tank, casing tube reactor and upper water tank to form a three-phase fluidized bed with TiO2 and air bubbles, but also permits the circulating flow of wastewater. The wastewater undergoes photocatalytic degradation under solar light irradiation collected by CPC as it flows through the casing tube reactor. The TiO2 intercepted by the membrane module flows back into the lower water tank for recycling via the circulating flow.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1111/php.12791

You might also like
Never Miss Important Research

Researcher is an app designed by academics, for academics. Create a personalised feed in two minutes.
Choose from over 15,000 academics journals covering ten research areas then let Researcher deliver you papers tailored to your interests each day.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.