Optimization of process conditions using RSM and ANFIS for the removal of Remazol Brilliant Orange 3R in a packed bed column

Expression have been derived in the paper for all four possible transfer functions between the inlet and the outlet gas and liquid steams under the counter-current absorption of a poorly soluble gas in a packed bed column. The transfer functions have been derived for the axially dispersed model with stagnant zone in the liquid phase and the axially dispersed model for the gas phase with interfacial transport of a gaseous component (PDE - AD). calculations with practical values of parameters suggest that only two of these transfer functions are applicable for experimental data evaluation.

Download Full-text

Analysis of observability of model parameters for physical absorption of poorly soluble gases in packed beds

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19822639 ◽

1982 ◽

Vol 47 (10) ◽

pp. 2639-2653 ◽

Cited By ~ 2

Author(s):

Pavel Moravec ◽

Vladimír Staněk

Keyword(s):

Transfer Functions ◽

Plug Flow ◽

Packed Bed ◽

Model Parameters ◽

Packed Bed Column ◽

Interfacial Transport ◽

Complex Arithmetic ◽

Physical Absorption ◽

Poorly Soluble ◽

Phase Lags

Expressions have been derived for four possible transfer functions of a model of physical absorption of a poorly soluble gas in a packed bed column. The model has been based on axially dispersed flow of gas, plug flow of liquid through stagnant and dynamic regions and interfacial transport of the absorbed component. The obtained transfer functions have been transformed into the frequency domain and their amplitude ratios and phase lags have been evaluated using the complex arithmetic feature of the EC-1033 computer. Two of the derived transfer functions have been found directly applicable for processing of experimental data. Of the remaining two one is useable with the limitations to absorption on a shallow layer of packing, the other is entirely worthless for the case of poorly soluble gases.

Download Full-text

An experimental dynamic method of investigation of counter-current absorption of oxygen in water in a packed bed column

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19871715 ◽

1987 ◽

Vol 52 (7) ◽

pp. 1715-1729 ◽

Cited By ~ 1

Author(s):

Pavel Moravec ◽

Vladimír Staněk

Keyword(s):

Transfer Functions ◽

Simultaneous Detection ◽

Harmonic Component ◽

Packed Bed ◽

Packed Bed Column ◽

Oxygen Electrodes ◽

Simultaneous Evaluation ◽

Physical Absorption ◽

On Line ◽

Counter Current

An experimental method and technique are described in the paper of simultaneous detection of the transfer functions outlet-gas-stream-to-inlet-gas-stream and outlet-liquid-stream-to-inlet-gas-stream for the absorption of oxygen into water in a counter-current packed bed column. Both transfer functions were simultaneously monitored by means of three oxygen electrodes operating on the polarographic principle. The signals of these electrodes were processed in three steps to yield parameters of the model of physical absorption of gas. The first step was on-line evaluation of the Fourier coefficients of the principal harmonic component in all three monitored streams. The second step was the calculation of the frequency characteristics of both transfer functions while the third step yielded parameters of the model by optimization in the frequency domain. The method permits simultaneous evaluation of the parameters of the flow of both phases in the column and the interfacial transfer of oxygen.

Download Full-text

Modification of Higbie?s model for mass transfer coefficients calculation in a packed bed column

Heat and Mass Transfer ◽

10.1007/s00231-003-0436-x ◽

2004 ◽

Vol 40 (8) ◽

Author(s):

V.A. Danilov ◽

A.G. Laptev ◽

I.M. Shigapov

Keyword(s):

Mass Transfer ◽

Packed Bed ◽

Transfer Coefficients ◽

Mass Transfer Coefficients ◽

Packed Bed Column ◽

S Model

Download Full-text

Effective removal of Cd2+, Zn2+ by immobilizing the non-absorbent active catalyst by packed bed column reactor for industrial wastewater treatment

Chemosphere ◽

10.1016/j.chemosphere.2021.130230 ◽

2021 ◽

pp. 130230

Author(s):

Sandhanasamy Devanesan ◽

Mohamad S. AlSalhi

Keyword(s):

Wastewater Treatment ◽

Industrial Wastewater ◽

Active Catalyst ◽

Packed Bed ◽

Packed Bed Column ◽

Industrial Wastewater Treatment ◽

Column Reactor ◽

Effective Removal

Download Full-text

Column Study for Adsorption of Methylene Blue Dye using Azadirachta indica Adsorbent

Asian Journal of Water Environment and Pollution ◽

10.3233/ajw200050 ◽

2020 ◽

Vol 17 (4) ◽

pp. 47-52

Author(s):

Vibha Goswami ◽

Renu Upadhyaya ◽

Sumanta Kumar Meher

Keyword(s):

Methylene Blue ◽

Flow Rate ◽

Azadirachta Indica ◽

Packed Bed ◽

Blue Dye ◽

Feed Flow Rate ◽

Methylene Blue Dye ◽

Packed Bed Column ◽

Bed Height ◽

Percentage Removal

In this study, synthesised Azadirachta indica adsorbent was used for the removal of methylene blue dye using a packed bed column. The effect of feed flow rate, feed methylene blue dye concentration, and bed height of column on percentage removal of dye was studied. It was observed that the column bed exhausted rapidly at a higher flow rate and therefore, a breakthrough occurred faster. However, it was observed that bed exhaustion time increases on increasing the bed height from 2 to 10 inch at 10 mg/L feed dye concentration and feed flow rate of 40 ml/min. It was also found that the breakthrough curve is more dispersed and the percentage removal of dye increases on decreasing the feed methylene dye concentration from 150 to 10 mg/L. The percentage removal was found to be 96.89% at 20 ml/min of feed flow rate under 10 inch of bed height and 10 mg/L of feed dye concentration. The atomic absorption spectrophotometer and scanning electron microscope were used for estimating the effluent dye concentration from the column and morphological study, respectively.

Download Full-text