Plug Flow Reactor Articles & Analysis
21 articles found
A plug flow polymerization reactor is a type of continuous flow reactor designed to achieve a uniform and narrow molecular weight distribution (MWD) in the polymer produced. Plug flow refers to the condition where the fluid moves through the reactor in discrete ...
BySunkaier
Engineers consider a range of factors — including the waste to be treated and the desired outcome — when designing an AD system Anaerobic digestion (AD) is a well-established technology for the treatment of organic waste streams. It harnesses the power of microorganisms in an oxygen-free environment to decompose organic matter, generating renewable biomethane as a byproduct and ...
Common ones include continuous stirred tank reactors (CSTR), plug flow digesters, fixed-film digesters, and expanded granular sludge bed (EGSB) reactors. ...
Production is carried out by means of different types of reactors (complete mix, plug flow, fluidized bed, etc.), psychrophilic processes (below 25°C), mesophilic (between 25 and 45°C) and thermophilic (between 45 and 65°C) and dry or wet process depending on the number of solids involved in the digestion process. ...
It follows that an improved capacity to model a biofilm reactor does not necessarily rely on an improved biofilm model, but does rely on an improved mathematical description of the biofilm reactor and its components. Existing biofilm reactor models typically include a one-dimensional biofilm model, a process (biokinetic and stoichiometric) model, ...
Typically, the blowers, air piping, and diffusers are not modelled in detail, completely mixed reactors in a series are used to represent plug-flow reactors, and empirical correlations are used to describe the impact of operating conditions on bubble formation and transport, and oxygen transfer from the bubbles to the bulk ...
Typically, the blowers, air piping, and diffusers are not modelled in detail, completely mixed reactors in a series are used to represent plug-flow reactors, and empirical correlations are used to describe the impact of operating conditions on bubble formation and transport, and oxygen transfer from the bubbles to the bulk ...
The reaction was carried out in a laboratory-scale solar photo-Fenton plug flow baffle reactor. An optimization study was performed using a central composite experimental design including the following variables: pH, initial concentrations of H2O2, Fe2+, and oxalic acid. ...
Low concentrations of dissolved oxygen (DO) are usually found in biological anoxic pre-denitrification reactors, causing a reduction in nitrogen removal efficiency. Therefore, the reduction of DO in such reactors is fundamental for achieving good nutrient removal. The article shows the results of an experimental study carried out to evaluate the effect of the ...
The use of phototrophic biofilms in wastewater treatment has been recognized as a potential option for development of new reactor configurations. For better understanding of these systems, a numerical model was developed including relevant microbial processes. ...
An effectiveness factor for photolysis has been defined and its variation with optical density has been analysed. The choice of plug flow or mixed flow reactor has been discussed with reference to order, effectiveness factor and optical density. It is observed that maintaining optical density at the highest level constantly would ...
The most commonly used equipment includes: drum-type reactors (continuous reactor or discontinuous perfectly mixed reactors) or worm reactors (Figure 2 plug flow reactor). In a flow reactor, the effectiveness of the contact between the phases ...
Apart from the main purpose of capturing biogas and using its energy, there are other advantages, such as: reducing emissions of landfill gas into atmosphere saving space required to store / utilize the waste removing odours and increase liveability of the surrounding areas utilizing a by-product to produce fertilizer attracting government funding for capital expenditure There are three ...
This paper describes the development of a new dissolved air flotation (DAF) separator with a flow streamlining baffle to improve solid separation efficiency. The analysis of the RTD (residence time distribution) curves indicated that the parameter θ10 (dimensionless time at which 10% of tracer has discharged) increased from 0.38 for control ...
The aim of this research was to evaluate the feasibility of cow manure anaerobic co-digestion with RS in a semi-continuous plug flow pilot-scale reactor. Three different periods of co-digestion were carried out as the RS dose was increased. ...
In this paper a monitoring tool is designed for a class of plug flow reactors whose mathematical model is described by a set of first-order partial differential equations with different coefficients in the convective terms. ...
The two approaches were used for modelling two hypothetical ozone reactors and a full-scale operating ozone contactor. For ozone reactors with plug flow characteristics, the two approaches match well in evaluating disinfection efficiency (represented by the CT value). For reactors with non-ideal hydraulic ...
In the present work, the dynamic ionic exchange of heavy metals was studied in a bed reactor filled with well-characterised LECA zeolite. Measurements were carried out of the parameters that describe the performance of the plug flow ionic exchange bed reactors (PFIEBR) during dynamic ionic exchange in LECA zeolite columns, ...
CHEMKIN and SENKIN computer codes were used with latest reaction mechanism parameters for simulated conditions in an isothermal plug flow reactor. Flue gas initial conditions were simulated as 70 litres/min propane containing 500 ppm background NOx. ...
Simulations indicate that the coefficient of variation for a reactor volume varies from 0.56 for a single mixed tank reactor to 0.44 for a plug flow reactor. The coefficient of variation for effluent for reactors designed on nominal values was found to be 0.56 for a mixed-tank ...