title: [Gas-liquid mass transfer in three-phase inverse turbulent bed reactor].
abstract: The characteristics of gas-liquid mass transfer of three-phase system comprising air, tap water/wastewater, and hollow glass beads were studied in a laboratory-scale inverse turbulent bed reactor. The influence of operational factors and liquid property on volumetric liquid-phase mass transfer coefficient kLa was investigated under the conditions of superficial gas velocity (0.53mm xs(-1) - 10mx s(-1) solid hold-up (0 - 0.3), and superficial liquid velocity (0 - 0.2mm x s(-1)). The results showed that the coefficient value was 0.0456 - 1. 414min -, which increased with superficial gas velocity and liquid velocity. The coefficient attained the maximum value at solid hold-up of 0.05 - 0.08. Compared with the coefficient value in tap water, that in synthetic wastewater and industrial wastewater is decreased by 39.0% and 50.9%, respectively. These data have provided a basis for the process analysis and mathematical simulation of inverse turbulent bed reactor.
authors: Department of Environmental Engineering, Zhejiang University, Hangzhou 310029, China.
authors: Ren-Cun
authors: RC
authors: Jin
authors: Ping
authors: P
authors: Zheng
authors: Jian-Wei
authors: JW
authors: Chen
authors: Zhan
authors: Z
authors: Tu
mesh_terms: D000465:Algorithms; D001673:Biodegradation, Environmental; D019149:Bioreactors; D003198:Computer Simulation; D005740:Gases / Q000737:chemistry* / Q000378:metabolism; D007700:Kinetics; D008956:Models, Chemical; D015203:Reproducibility of Results; D013696:Temperature; D014865:Waste Disposal, Fluid / Q000295:instrumentation / Q000379:methods; D014867:Water / Q000737:chemistry* / Q000378:metabolism; D014871:Water Microbiology; D014874:Water Pollutants, Chemical / Q000737:chemistry* / Q000378:metabolism; D018508:Water Purification / Q000295:instrumentation / Q000379:methods
chemical_list: D005740:Gases; D014874:Water Pollutants, Chemical; D014867:Water