Experimental and modeling of competitive biosorption of benzene, toluene, ethylbenzene, xylenes, and naphthalene (BTEXN) in a packed-bed column with a macroalgae-based composite: Effect of dissolved organic matter and flow rate on breakthrough curves

2021 ◽  
Vol 40 ◽  
pp. 101874
Author(s):  
Carlos E. Flores-Chaparro ◽  
Mayra C. Rodriguez-Hernandez ◽  
Luis F. Chazaro-Ruiz ◽  
Ma. Catalina Alfaro-De la Torre ◽  
Miguel A. Huerta-Diaz ◽  
...  
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Flow Rate ◽  
Packed Bed ◽  
Breakthrough Curves ◽  
Composite Effect ◽  
Packed Bed Column ◽  
Competitive Biosorption ◽  
Benzene Toluene

scholarly journals Packed bed column studies for the removal of dyes using novel sorbent

2013 ◽  
Vol 19 (4) ◽  
pp. 461-470 ◽  
Author(s):  
R. Rajeshkannan ◽  
M. Rajasimman ◽  
N. Rajamohan
Keyword(s):  
Flow Rate ◽  
Fixed Bed ◽  
Packed Bed ◽  
Breakthrough Curves ◽  
Column Studies ◽  
Packed Bed Column ◽  
Bdst Model ◽  
Tamarind Seed ◽  
Acid Blue ◽  
Good Agreement

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.

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

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.

Effects of pH, ionic strength, dissolved organic matter, and flow rate on the co-transport of MS2 bacteriophages with kaolinite in gravel aquifer media

2010 ◽  
Vol 44 (4) ◽  
pp. 1255-1269 ◽  
Author(s):  
Gillian E. Walshe ◽  
Liping Pang ◽  
Markus Flury ◽  
Murray E. Close ◽  
Mark Flintoft
Keyword(s):  
Organic Matter ◽  
Ionic Strength ◽  
Dissolved Organic Matter ◽  
Flow Rate ◽  
Effects Of Ph ◽  
Gravel Aquifer

Continuous Heavy Metal Removal from Palm Oil Mill Effluent Using Natural Ceiba pentandra Packed-Bed Column

2014 ◽  
Vol 625 ◽  
pp. 822-825 ◽  
Author(s):  
Muhammad Afzaal ◽  
Balasubramanian Periyasamy ◽  
Mohd Azmuddin Abdullah
Keyword(s):  
Heavy Metal ◽  
Flow Rate ◽  
Palm Oil ◽  
Packing Density ◽  
Metal Removal ◽  
Heavy Metal Removal ◽  
Packed Bed ◽  
Palm Oil Mill Effluent ◽  
Packed Bed Column ◽  
Palm Oil Mill

Packed bed column studies were carried out to evaluate the performance of naturalCeiba pentandra(L). Gaertn. (kapok) for the heavy metal removal from Palm Oil Mill Effluent (POME) under varying flow rate (5-10 ml/min) and packing density (0.04-0.08 g/cm3). A multilevel factorial design based on Packing density and flow rate of the influent was developed. Maximum metal reductions for Fe, Mn and Zn were 2.06 ppm, 0.081 ppm, and 0.064 ppm respectively obtained at 0.08 g/cm3packing density and 5 ml/min flow rate. The results suggest the suitability of raw kapok fiber for low-cost removal of heavy metals.

Sorption of Cr (VI) onto Olive Stone in a Packed Bed Column: Prediction of Kinetic Parameters and Breakthrough Curves

2010 ◽  
Vol 136 (12) ◽  
pp. 1389-1397 ◽  
Author(s):  
M. A. Martín-Lara ◽  
F. Hernáinz ◽  
G. Blázquez ◽  
G. Tenorio ◽  
M. Calero
Keyword(s):  
Kinetic Parameters ◽  
Packed Bed ◽  
Breakthrough Curves ◽  
Packed Bed Column ◽  
Olive Stone

scholarly journals Adsorption of malachite green in a fixed-bed columns by Thiourea modified poly(acrylonitrile-co-acrylic acid)

2019 ◽  
Vol 25 (4) ◽  
pp. 383-393
Author(s):  
Abel Adeyi ◽  
Siti Jamil ◽  
Luqman Abdullah ◽  
Thomas Choong ◽  
Mohammad Abdullah ◽  
...  
Keyword(s):  
Acrylic Acid ◽  
Malachite Green ◽  
Flow Rate ◽  
Dynamic Models ◽  
Fixed Bed ◽  
Correlation Coefficients ◽  
Packed Bed ◽  
Breakthrough Curves ◽  
Solution Ph ◽  
Poly Acrylonitrile

Thiourea-modified poly(acrylonitrile-co-acrylic acid) (TU-poly(AN-co-AA)) polymeric adsorbent was synthesized and characterized with Fourier-transform infrared (FTIR) spectroscopy, scanning electron microscope (SEM) and Zetasizer. Adsorptive removal of cationic malachite green (MG) dye from aqueous solution in a continuous TU-poly(AN-coAA) packed-bed column was studied. The influences of solution pH (2-9), inlet MG concentration (25-80 mg/L), bed depth (4-8 cm) and linear flow rate (1.5-5.0 mL/min) were investigated via assessment of the column breakthrough curves. Low pH and short bed depth, high MG concentration and flow rate led to early breakthrough of MG. According to correlation coefficients (R2) and sum of the squares of the errors (SSE) values, Thomas and Yoon-Nelson dynamic models are more suitable to describe the column experimental data compared to the Bohart-Adams model. TU-poly(AN-co-AA) exhibited effective separation of MG from the liquid phase and displayed high adsorption capacities after five regeneration cycles.

scholarly journals Modeling and Optimization of Carbon Dioxide Removal in Packed Bed Column Reactor

2020 ◽  
Vol 8 (3) ◽  
pp. 8-13
Author(s):  
K. Thirugnanasambandham
Keyword(s):  
Carbon Dioxide ◽  
Process Parameters ◽  
Flow Rate ◽  
Co2 Capture ◽  
Packed Bed ◽  
Operating Conditions ◽  
Feed Flow Rate ◽  
Statistical Design Of Experiments ◽  
Packed Bed Column ◽  
Column Reactor

Global warming due to greenhouse gases has become a serious global issue. Extensive efforts are being made to fighting this phenomenon through carbon capture as carbon dioxide (CO2) is its major contributor. This study focused on CO2 capture in packed bed column reactor using Poly-(D) glucosamine under the various process parameters such as temperature, feed flow rate and mass of the adsorbent. Statistical design of experiments was carried out in order to analysis the effect process parameters on the capacity of CO2 capture in packed bed column. The obtained results show that feed flow rate has the significant affect compared to others. The maximum of 956 mg of CO2 is captured under the following operating conditions; temperature of 40oC, feed flow rate of 30 ml/min and 0.25 g of the Poly-(D) glucosamine. The ability of Poly-(D) glucosamine to capture the CO2 in packed bed column is confirmed.

scholarly journals Packed Bed Biosorption of Lead and Copper Ions Using Sugarcane Bagasse

2016 ◽  
Vol 16 (1) ◽  
pp. 23 ◽  
Author(s):  
Norwin Dale F Duga ◽  
Pauline Edrickke A Imperial ◽  
Allan N Soriano ◽  
Aileen D Nieva
Keyword(s):  
Heavy Metals ◽  
Adsorption Capacity ◽  
Sugarcane Bagasse ◽  
Flow Rate ◽  
Copper Ions ◽  
Continuous System ◽  
Packed Bed ◽  
Packed Bed Column ◽  
Varying Parameters ◽  
Bed Height

Bagasse, a waste material from sugarcane has been studied as a biosorbent for removing heavy metals, Pb2+ and Cu2+, in a continuous system using a packed bed column. This study was undertaken to determine the influence of varying the bed height and flow rate on the breakthrough and saturation time. Thomas, Adams-Bohart and Yoon-Nelson models were used to assess the effects of varying parameters and both Thomas and Yoon-Nelson models were found to be satisfactory to describe the column data obtained in the experiment. Moreover, lead ions are adsorbed more efficiently with an adsorption capacity of 4.54 mg/g compared to copper ions with 3.98 mg/g at the most feasible parameters having a flow rate of 100 mL/min and a bed height of 30 cm

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