1
|
A Turbulent Mass Diffusivity Model for Predicting Species Concentration Distribution in the Biodegradation of Phenol Wastewater in an Airlift Reactor. Processes (Basel) 2023. [DOI: 10.3390/pr11020484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
In this study, a three-dimensional CFD transient model is established for predicting species concentration distribution in the biodegradation of phenol in an airlift reactor (ALR). The gas–liquid flow in the ALR is determined by the Euler–Euler method coupled with the standard k-ε model, and the bubble size is predicted by the population balance model (PBM). A turbulent mass diffusivity model is developed to simulate the turbulent mass transfer process and to predict the species concentration distribution. No empirical methods are needed as the turbulent mass diffusivity can be expressed by the concentration variance c2¯ and its dissipation rate εc. A good agreement is found between simulated and experimental results in the literature. It is not reasonable to assume a constant turbulent Schmidt number because the calculated distribution of turbulent mass diffusivity is not identical to that of turbulent viscosity. Finally, the hydrodynamic characteristics and biodegradation performance of the proposed model in a novel ALR are compared with that in the original ALR.
Collapse
|
2
|
Jia S, Cao X, Wang F, Zhang C, Yuan X, Yu KT. Renormalization group method for the turbulent mass transport two-equation model. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2021.117306] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
3
|
Zhang C, Yuan X, Luo Y, Yu (K.T. Yu) G. Prediction of species concentration distribution using a rigorous turbulent mass diffusivity model for bubble column reactor simulation part II: Analogy between turbulent mass and momentum transfer in toluene emissions biodegradation process. Chem Eng Sci 2018. [DOI: 10.1016/j.ces.2018.04.024] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
4
|
Prediction of species concentration distribution using a rigorous turbulent mass diffusivity model for bubble column reactor simulation part I: Application to chemisorption process of CO2 into NaOH solution. Chem Eng Sci 2018. [DOI: 10.1016/j.ces.2018.03.031] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
5
|
Li W, Yu K, Yuan X, Liu B. A Reynolds mass flux model for gas separation process simulation: II. Application to adsorption on activated carbon in a packed column. Chin J Chem Eng 2015. [DOI: 10.1016/j.cjche.2015.01.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
6
|
Li W, Liu B. A Reynolds Mass Flux Model for the Simulation of Chemical Absorption of CO 2 into 2-Amino-2-methyl-1-propanol in a Packed Column. Ind Eng Chem Res 2015. [DOI: 10.1021/ie5024673] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Wenbin Li
- Collaborative Innovation Center of Chemical Science and Engineering
(Tianjin), and ‡State Key Laboratory for Chemical Engineering, School of Chemical
Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Botan Liu
- Collaborative Innovation Center of Chemical Science and Engineering
(Tianjin), and ‡State Key Laboratory for Chemical Engineering, School of Chemical
Engineering and Technology, Tianjin University, Tianjin 300072, China
| |
Collapse
|
7
|
Li W, Yu K, Liu B, Yuan X. Computational fluid dynamics simulation of hydrodynamics and chemical reaction in a CFB downer. POWDER TECHNOL 2015. [DOI: 10.1016/j.powtec.2014.09.026] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
8
|
Li W, Zhao X, Liu B, Tang Z. Mass Transfer Coefficients for CO2 Absorption into Aqueous Ammonia Using Structured Packing. Ind Eng Chem Res 2014. [DOI: 10.1021/ie403097h] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Wenbin Li
- State Key Laboratory for
Chemical Engineering and School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Xingjian Zhao
- State Key Laboratory for
Chemical Engineering and School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Botan Liu
- State Key Laboratory for
Chemical Engineering and School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Zhongli Tang
- State Key Laboratory for
Chemical Engineering and School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| |
Collapse
|
9
|
|