Investigation of the steric mass action formalism in the simulation of breakthrough curves on a monolithic and a packed bed column

A continuous fixed bed study was carried out by using tamarind seed as a sorbent for the removal of malachite green (MG) and acid blue 9(AB9) from aqueous solution. The effect of factors, such as flow rate and bed depth was studied. Data confirmed that the breakthrough curves were dependent on flow rate and bed depth. Thomas, Adams-Bohart, and Yoon-Nelson models were applied to experimental data to predict the breakthrough curves using non-linear regression and to determine the characteristic parameters of the packed bed column. Bed depth/service time analysis (BDST) model was used to express the effect of bed depth on breakthrough curves. The results showed that Thomas model was found suitable for the normal description of breakthrough curve at the experimental condition, while Adams-Bohart and Yoon-Nelson model were able to explain only the initial part of dynamic behaviour of the tamarind seed column. The data were in good agreement with BDST model. It was concluded that the tamarind seed can be effectively used as a sorbent for the removal of dyes.

Download Full-text

Removal of Chlorinated Chemicals in H2Feedstock Using Modified Activated Carbon

Journal of Chemistry ◽

10.1155/2015/959012 ◽

2015 ◽

Vol 2015 ◽

pp. 1-9 ◽

Cited By ~ 1

Author(s):

Prapaporn Luekittisup ◽

Visanu Tanboonchauy ◽

Jitlada Chumee ◽

Somrudee Predapitakkun ◽

Rattanawan W. Kiatkomol ◽

...

Keyword(s):

Activated Carbon ◽

Adsorption Capacity ◽

Space Velocity ◽

Packed Bed ◽

Breakthrough Curves ◽

Velocity Range ◽

Modified Activated Carbon ◽

Packed Bed Column ◽

Nelson Model ◽

Weight Hourly Space Velocity

Activated carbon (GAC) was impregnated by sodium and used as adsorbent to remove chlorinated hydrocarbon (CHC) gases contaminated in H2feedstock. The adsorption was carried out in a continuous packed-bed column under the weight hourly space velocity range of 0.8–1.0 hr−1. The adsorption capacity was evaluated via the breakthrough curves. This modified GAC potentially adsorbed HCl and VCM of 0.0681 gHCl/gadsorbentand 0.0026 gVCM/gadsorbent, respectively. It showed higher adsorption capacity than SiO2and Al2O3balls for both organic and inorganic CHCs removal. In addition, the kinetic adsorption of chlorinated hydrocarbons on modified GAC fit well with Yoon-Nelson model.

Download Full-text

Prediction of breakthrough curves in packed-bed column as tool for lysozyme isolation using a green bed

Polymer Bulletin ◽

10.1007/s00289-019-02683-5 ◽

2019 ◽

Vol 76 (11) ◽

pp. 5831-5847

Author(s):

M. Emilia Brassesco ◽

Nadia Woitovich Valetti ◽

Guillermo Picó

Keyword(s):

Packed Bed ◽

Breakthrough Curves ◽

Packed Bed Column

Download Full-text

Removal of Ni(II) Using Cation Exchange Resins in Packed Bed Column: Prediction of Breakthrough Curves

CLEAN - Soil Air Water ◽

10.1002/clen.200900178 ◽

2010 ◽

Vol 39 (1) ◽

pp. 88-94 ◽

Cited By ~ 6

Author(s):

Ponnaiah Gomathi Priya ◽

Chiya Ahmed Basha ◽

Veerappan Ramamurthi

Keyword(s):

Cation Exchange ◽

Packed Bed ◽

Breakthrough Curves ◽

Packed Bed Column ◽

Cation Exchange Resins ◽

Exchange Resins

Download Full-text

Scale-up of a packed bed column for wastewater treatment

Water Science & Technology ◽

10.2166/wst.2018.020 ◽

2018 ◽

Vol 77 (5) ◽

pp. 1386-1396 ◽

Cited By ~ 5

Author(s):

A. Ronda ◽

M. A. Martín-Lara ◽

O. Osegueda ◽

V. Castillo ◽

G. Blázquez

Keyword(s):

Scale Up ◽

Olive Tree ◽

Packed Bed ◽

Industrial Applications ◽

Breakthrough Curves ◽

Packed Bed Column ◽

Mean Values ◽

Biosorption Process ◽

The Mathematical Model ◽

Tree Pruning

Abstract After checking the success of the biosorption process to remove heavy metals from wastewater using olive tree pruning as a cheap biosorbent in the laboratory scale, the scale-up is necessary to progress towards industrial applications chance. The aim of this work was the study of the effect of scale-up in the process of biosorption of Pb(II) with olive tree pruning in a packed bed column. Experiments were performed using two different scale-up criteria and results obtained in both scales were compared. Similar parameters were obtained for each pair of equivalent tests, with a slightly advanced of the obtained breakthrough curves in the pilot plant. The experimental results were fitted by the Thomas model and the obtained mean values were KTh = 0.187 mL/min·mg and q0 = 20.59 mg/g for criterion 1 and KTh = 0.217 mL/min·mg and q0 = 20.27 mg/g for criterion 2. Finally, the mathematical model was applied to simulate industrial applications and it was obtained that under optimal operative conditions, a column according to the criterion 1 was able to operate 2.3 h, and a column according to the criterion 2 was able to operate for 3.6 h.

Download Full-text

Theoretical analysis of counter-current absorption of a poorly soluble gas based on the PDE-AD model

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19861222 ◽

1986 ◽

Vol 51 (6) ◽

pp. 1222-1239 ◽

Cited By ~ 1

Author(s):

Pavel Moravec ◽

Vladimír Staněk

Keyword(s):

Experimental Data ◽

Liquid Phase ◽

Gas Phase ◽

Transfer Functions ◽

Packed Bed ◽

Packed Bed Column ◽

Interfacial Transport ◽

Gaseous Component ◽

Poorly Soluble ◽

Counter Current

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