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Journal articles on the topic 'Breakthrough curves'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Shackelford, Charles D., Michael A. Malusis, Mitchell J. Majeski, and Roslyn T. Stern. "Electrical Conductivity Breakthrough Curves." Journal of Geotechnical and Geoenvironmental Engineering 125, no. 4 (1999): 260–70. http://dx.doi.org/10.1061/(asce)1090-0241(1999)125:4(260).

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2

Lu, Debao, Yinfeng Xia, Nan Geng, Hui Wang, Jinlin Qian, and Cundong Xu. "Estimation Parameters of Soil Solute Transport Processes by Using the Electric Resistivity Method." Processes 10, no. 5 (2022): 975. http://dx.doi.org/10.3390/pr10050975.

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Preferential solute transport is a common phenomenon in soil, and it is of great significance to accurately describe the mechanism of pollutant transport and water and soil environmental governance. However, the description of preferential solutes still relies on applying solute breakthrough curves for model parameters fitting. At present, most of the solute breakthrough curves are obtained indoors, and with some limitations. Therefore, this study established a method for securing solute breakthrough curves based on the electrical resistivity method. The research results show that the change i

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3

Fahrner, Robert L., and Gregory S. Blank. "Real‐time monitoring of recombinant antibody breakthrough during Protein A affinity chromatography." Biotechnology and Applied Biochemistry 29, no. 2 (1999): 109–12. http://dx.doi.org/10.1111/j.1470-8744.1999.tb00539.x.

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An on‐line assay was developed to monitor antibody breakthrough in real time during Protein A affinity chromatography of recombinant antibodies. When loading cell culture fluid on to a Protein A affinity column, antibody breakthrough cannot be measured by UV absorbance because of the flow‐through of UV‐absorbing impurities. An assay using perfusion chromatography media with immobilized Protein A is a rapid, antibody‐specific assay. It directly samples preparative column effluent, allowing real‐time measurement of antibody breakthrough during loading of Protein A affinity chromatography. Breakt

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4

Adin, Avner, and Raj Rajagopalan. "Breakthrough Curves in Granular Media Filtration." Journal of Environmental Engineering 115, no. 4 (1989): 785–98. http://dx.doi.org/10.1061/(asce)0733-9372(1989)115:4(785).

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5

Ghorbanian, Sohrabali, Mostafa Davoudinejad, Amir Khakpay, and Saeidreza Radpour. "Modeling Breakthrough Curves of Citric Acid Adsorption onto Anionic Resins in an Aqueous Solution." Journal of Engineering 2015 (2015): 1–7. http://dx.doi.org/10.1155/2015/139041.

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Breakthrough curves for citric acid adsorption from aqueous solution onto ion-exchange resin at 20, 35, and 55°C have been investigated. To predict breakthrough curves, three mathematical models have been analyzed based on the values of the least square method parameters, Durbin-Watson test, and mean relative percent error and, finally, appropriate models have been achieved. Models are in good agreement with experimental data based on the results. To examine models reliabilities and accuracy, models have been compared by various breakthrough curve data obtained by other investigators. The resu

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6

Rajeshkannan, R., M. Rajasimman, and N. Rajamohan. "Packed bed column studies for the removal of dyes using novel sorbent." Chemical Industry and Chemical Engineering Quarterly 19, no. 4 (2013): 461–70. http://dx.doi.org/10.2298/ciceq120407081r.

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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

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7

Kuboňová, Lenka, Lucie Obalová, Oldřich Vlach, Ivana Troppová, and Jaroslav Kalousek. "Modelling of NO adsorption in fixed bed on activated carbon." Chemical and Process Engineering 32, no. 4 (2011): 367–77. http://dx.doi.org/10.2478/v10176-011-0029-z.

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Modelling of NO adsorption in fixed bed on activated carbon Adsorption experiments of nitric oxide in nitrogen carrier gas were held on activated carbon in a fixed bed flow system. Breakthrough curves describing the dependence of exit concentrations of nitric oxide on time were matched with theoretical response curves calculated from the linear driving force model (LDF). The model assumes Langmuir adsorption isotherm for the description of non-linear equilibrium and overall mass transfer coefficient for mass transfer mechanism. Overall mass transfer coefficients were obtained by the method of

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8

Kindi, Hablinur Al, Armansyah Halomoan Tambunan, Edy Hartulistiyoso, Salundik Salundik, Edi Sutoyo, and Setya Permana Sutisna. "Simulation on the Breakthrough Curve During CO2 Adsorption from Biogas in a Fixed Bed Column." ASEAN Journal of Chemical Engineering 23, no. 3 (2023): 318. http://dx.doi.org/10.22146/ajche.82470.

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Separation of CO2 gas from the biogas can be accomplished by adsorption process. An adsorbent has a maximum capacity, so the adsorbent will eventually be saturated at a certain time. Therefore, it is necessary to simulate the adsorption mass transfer to produce a breakthrough curve. The breakthrough curve from the simulation of adsorption mass transfer was validated with the experimental data. The research was conducted using variations in temperature and pressure. The mass transfer simulation was solved using the finite difference method. The adsorbent used in this research was 13X zeolite an

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9

Gerritse, RG. "Effect of reaction-rate on leaching of phosphate through sandy soils of Western-Australia." Soil Research 33, no. 1 (1995): 211. http://dx.doi.org/10.1071/sr9950211.

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The effect of reaction rate on the mobility of phosphate in soils was measured from breakthrough curves in the leachate from small columns of soil, following step increases in the input concentration of phosphate. Average mobilities of phosphate in columns of soil, following a step increase in the input concentration, decrease with decreasing rate of flow and with increasing distance travelled and appear to be linearly correlated on a log-log scale with both flow rate and distance travelled. An empirical equation, describing these relationships, fits data from leaching experiments at flow rate

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10

Marciniak, Marek, Monika Okońska, and Mariusz Kaczmarek. "Preselection of a sorption model based on a column test: the algorithm and an example of its application." Hydrogeology Journal 29, no. 4 (2021): 1551–67. http://dx.doi.org/10.1007/s10040-021-02338-8.

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AbstractIn order to describe the contamination of saturated porous media, it is necessary to find an appropriate mathematical model that includes processes occurring in aquifers, such as advection, dispersion, diffusion, and various kinds of sorption. The identification of parameters of those processes is possible through laboratory column experiments, which result in records of breakthrough curves for a conservative tracer and a reactive tracer. An algorithm leading to the preliminary selection of the mathematical model that best describes transport processes of the reactive tracer in the exp

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11

Li, Guangquan. "Spatially Varying Dispersion to Model Breakthrough Curves." Ground Water 49, no. 4 (2010): 584–92. http://dx.doi.org/10.1111/j.1745-6584.2010.00777.x.

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12

Anger, Cale T., and E. Calvin Alexander. "Bench-scale models of dye breakthrough curves." Carbonates and Evaporites 28, no. 1-2 (2012): 221–27. http://dx.doi.org/10.1007/s13146-012-0092-7.

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13

Grindrod, Peter, Mark S. Edwards, Jenny J. W. Higgo, and Geoffrey M. Williams. "Analysis of colloid and tracer breakthrough curves." Journal of Contaminant Hydrology 21, no. 1-4 (1996): 243–53. http://dx.doi.org/10.1016/0169-7722(95)00051-8.

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14

Poursaeidesfahani, Ali, Eduardo Andres-Garcia, Martijn de Lange, et al. "Prediction of adsorption isotherms from breakthrough curves." Microporous and Mesoporous Materials 277 (March 2019): 237–44. http://dx.doi.org/10.1016/j.micromeso.2018.10.037.

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15

Nienow, Peter W., Martin Sharp, and Ian С. Willis. "Sampling-rate effects on the properties of dye breakthrough curves from glaciers." Journal of Glaciology 42, no. 140 (1996): 184–89. http://dx.doi.org/10.1017/s0022143000030641.

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AbstractDye-tracer techniques are widely used in infer the character of subglacial drainage systems. Quantitative analysis of dye breakthrough curves focuses on the determination of the water through flow velocity(u),the dispersion coefficient(D)and the dispersivity parameter(d = D/u). Together, these parameters describe the rate of passage of tracer through the drainage system and the extent to which the dye cloud becomes spread out during passage. They have been used to infer the nature of flow conditions within a drainage system and temporal changes in system morphology. Estimates of all th

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16

Nienow, Peter W., Martin Sharp, and Ian С. Willis. "Sampling-rate effects on the properties of dye breakthrough curves from glaciers." Journal of Glaciology 42, no. 140 (1996): 184–89. http://dx.doi.org/10.3189/s0022143000030641.

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AbstractDye-tracer techniques are widely used in infer the character of subglacial drainage systems. Quantitative analysis of dye breakthrough curves focuses on the determination of the water through flow velocity (u), the dispersion coefficient (D) and the dispersivity parameter (d = D/u). Together, these parameters describe the rate of passage of tracer through the drainage system and the extent to which the dye cloud becomes spread out during passage. They have been used to infer the nature of flow conditions within a drainage system and temporal changes in system morphology. Estimates of a

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17

Jia, Bao. "Mechanistic Understanding of Delayed Oil Breakthrough with Nanopore Confinement in Near-Critical Point Shale Oil Reservoirs." Energies 15, no. 20 (2022): 7778. http://dx.doi.org/10.3390/en15207778.

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Recently, significant breakthroughs have been made in exploring northeast China’s shale part of the Q formation. On-site observation reveals that the appearance of oil at the wellhead is only seen a long time after fracturing in many wells. Strong coupling between phase behavior and relative permeability curves in the reservoir with the near-critical point initial condition restricts the efficient development of this kind of shale oil. A series of compositional models are constructed to address the issues to reveal the cause of the late oil breakthrough. Nanopore confinement is checked by incl

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18

Chakraborty, Meena, Madhurima Pandey, and Piyushkant Pandey. "Fixed bed column performance of Tinospora cordifolia for defluoridation of water." Water Supply 21, no. 5 (2021): 2324–32. http://dx.doi.org/10.2166/ws.2021.045.

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Abstract A continuous adsorption study in a fixed-bed column was carried out by using Tinospora cordifolia as an adsorbent for the removal of fluoride from aqueous solution. The effect of flow rate, influent fluoride concentration and bed depth on the adsorption characteristics of adsorbent was investigated at pH 7. The dependencies of breakthrough curves on these parameters were confirmed from the data obtained. Modeling of data was done. Thomas, Yoon–Nelson and Adams–Bohart models were applied to experimental data to predict the breakthrough curves. These kinetic models were helpful to deter

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19

Sarran, Mohammed A., Adnan A. AbdulRazak, Mohammed F. Abid, et al. "Oily Wastewater Treatment by Using Fe3O4/Bentonite in Fixed-Bed Adsorption Column." ChemEngineering 8, no. 5 (2024): 92. http://dx.doi.org/10.3390/chemengineering8050092.

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Oily wastewater is a major environmental issue resulting from different industrial and manufacturing activities. Contaminated water with oil represents a significant environmental hazard that can harm numerous life forms. Several methodologies have been tested for the removal of oily wastewater from aqueous solutions, and adsorption in a flow-through reactor is an effective mechanism to reduce these effluents. This study focuses on evaluating the ability of Fe3O4/Bent material to adsorb gasoline emulsion from a solution using a fixed-bed column, and it involves analyzing the resulting breakthr

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20

Yoshida, Hiroyuki, and Takeshi Takemori. "Adsorption of direct dye on cross-linked chitosan fiber: breakthrough curve." Water Science and Technology 35, no. 7 (1997): 29–37. http://dx.doi.org/10.2166/wst.1997.0257.

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The recovery of direct dye by adsorption on cross-linked fiber (ChF-B), which we have developed, appeared technically feasible. The concentration of amino group fixed in the adsorbent phase was 3.30 mol/kg dry fiber. A typical direct dye, Brilliant Yellow (M.W.=625, divalent anion) was used in this experimental study. The breakthrough curves for adsorption of the dye were measured for different flow rates, bed heights, influent concentrations of the dye, and temperatures. The experimental breakthrough curves showed that ChF-B recovered the dye efficiently even from the hot dye solution. Axial

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21

Radulovich, R., E. Solorzano, and P. Sollins. "Soil Macropore Size Distribution from Water Breakthrough Curves." Soil Science Society of America Journal 53, no. 2 (1989): 556–59. http://dx.doi.org/10.2136/sssaj1989.03615995005300020042x.

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22

Chu, Khim Hoong. "Fitting the Gompertz equation to asymmetric breakthrough curves." Journal of Environmental Chemical Engineering 8, no. 3 (2020): 103713. http://dx.doi.org/10.1016/j.jece.2020.103713.

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23

Foppen, J. W. A., A. Mporokoso, and J. F. Schijven. "Determining straining of Escherichia coli from breakthrough curves." Journal of Contaminant Hydrology 76, no. 3-4 (2005): 191–210. http://dx.doi.org/10.1016/j.jconhyd.2004.08.005.

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24

Ghorbanian, S. A. "Investigation of Breakthrough Curves of Citric Acid Adsorption." Chemical and Biochemical Engineering Quarterly Journal 28, no. 3 (2014): 329–36. http://dx.doi.org/10.15255/cabeq.2013.1872.

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25

Hall, C. Richard, and Richard J. Holmes. "Observations and Comments on the Displacement of Pre-Adsorbed Water from BPL Activated Carbon by Chloropicrin Vapour." Adsorption Science & Technology 6, no. 2 (1989): 83–92. http://dx.doi.org/10.1177/026361748900600203.

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The breakthrough curves of chloropicrin vapour through beds of BPL activated carbon pre-equilibrated at different relative humidities (RH) have been measured. The associated water displacement curves and effluent temperature profiles are also presented. At first, as the experimental RH increases, the slope of the breakthrough curves gradually decreases. However, at high RH (i.e. 80%) the curve becomes distinctly biphasic. It is proposed that the initial steep part of the curve is the result of a build-up of water in the macro (transport) pore structure of the carbon which restricts access of c

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26

Chen, Kuei-Hsiang, You-Ren Lai, Nguyen The Duc Hanh, Steven S. S. Wang, and Yu-Kaung Chang. "Breakthrough Curve Modeling and Analysis for Lysozyme Adsorption by Tris(hydroxymethyl)aminomethane Affinity Nanofiber Membrane." Membranes 13, no. 9 (2023): 761. http://dx.doi.org/10.3390/membranes13090761.

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In this study, a polyacrylonitrile nanofiber membrane was first hydrolyzed and then functionalized with tris(hydroxymethyl)aminomethane (P-Tris), then used as an affinity nanofiber membrane for lysozyme adsorption in membrane chromatography. The dynamic adsorption behavior of lysozyme was investigated in a flow system under various operating parameters, including adsorption pHs, initial feed lysozyme concentration, loading flow rate, and the number of stacked membrane layers. Four different kinetic models, pseudo-first-order, pseudo-second-order, Elovich, and intraparticle diffusion kinetic mo

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27

Eberle, Stephan, Viktor Schmalz, Hilmar Börnick, and Stefan Stolte. "Natural Zeolites for the Sorption of Ammonium: Breakthrough Curve Evaluation and Modeling." Molecules 28, no. 4 (2023): 1614. http://dx.doi.org/10.3390/molecules28041614.

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The excessive use of ammonium fertilizer and its associated leakage threatens aquatic environments around the world. With a focus on the treatment of drinking water, the scope of this study was to evaluate and model the breakthrough curves for NH4+ in zeolite-filled, fixed-bed columns. Breakthrough experiments were performed in single- and multi-sorbate systems with the initial K+ and NH4+ concentrations set to 0.7 mmol/L. Breakthrough curves were successfully modeled by applying the linear driving force (LDF) and Thomas models. Batch experiments revealed that a good description of NH4+ sorpti

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28

Erşahin, S. "Quantification of pore-size spectrums by solute breakthrough curves." Hydrology and Earth System Sciences Discussions 8, no. 5 (2011): 8373–97. http://dx.doi.org/10.5194/hessd-8-8373-2011.

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Abstract. Breakthrough of conservative tracers may be used to quantify pore-size spectrum and pore-water velocity distributions in a porous medium. In this study, a theory was proposed to calculate pore-water velocity and corresponding pore-size spectrum in porous media, and its application was demonstrated. Miscible displacement tests of chloride were conducted with sand columns (5 cm id and 5 cm length), repacked with washed sand with a particle size of 2–1, 1–0.45, 0.45–0.325 and <0.325 mm in diameter. The resulting breakthrough curves were divided into approximately 20 segments, and for

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29

Koestel, J. K., J. Moeys, and N. J. Jarvis. "Evaluation of Nonparametric Shape Measures for Solute Breakthrough Curves." Vadose Zone Journal 10, no. 4 (2011): 1261–75. http://dx.doi.org/10.2136/vzj2011.0010.

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30

BARKEY, DALE P. "DETERMINATION OF BREAKTHROUGH CURVES FOR SELECTIVE-MEMBRANE SORPTION PROCESSES." Chemical Engineering Communications 72, no. 1 (1988): 213–19. http://dx.doi.org/10.1080/00986448808940018.

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31

Baghban, Alireza, Jafar Sasanipour, Pouya Haratipour, Mehdi Alizad, and Masih Vafaee Ayouri. "ANFIS modeling of rhamnolipid breakthrough curves on activated carbon." Chemical Engineering Research and Design 126 (October 2017): 67–75. http://dx.doi.org/10.1016/j.cherd.2017.08.007.

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32

Botella, T., P. Gasos, and J. L. Otero De La Gandara. "Continuous ion exchange: Loading breakthrough curves and calculation methods." Hydrometallurgy 17, no. 1 (1986): 91–112. http://dx.doi.org/10.1016/0304-386x(86)90024-1.

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33

ZUPANC, Vesna, Miran VESELIČ, and Peter CEPUDER. "Prenos nitrata in amonija v zemeljskih kolonah." Acta agriculturae Slovenica 77, no. 2 (2001): 159–67. http://dx.doi.org/10.14720/aas.2001.77.2.15707.

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The displacement of nitrate fertilizer by distilled water under saturated conditions and at different average flow velocities in one – dimensional soil columns is studied to observe the behavior of the nitrogen in transport processes. Breakthrough curves of nitrate were comparing to the ammonium breakthrough curves symmetrical with all aggregate sizes. The biggest influence on the nitrate retention had 0.63–2 mm fraction, where 30–50 % of the total mass was preserved. The biggest influence on the ammonium transport had its ability to fixate on the negative charged particle surfaces. Breakthrou

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34

Li, Nan, Jing Ren, Lin Zhao, and Zhong-liang Wang. "Fixed Bed Adsorption Study on Phosphate Removal Using Nanosized FeOOH-Modified Anion Resin." Journal of Nanomaterials 2013 (2013): 1–5. http://dx.doi.org/10.1155/2013/736275.

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Removal of phosphate from solution using nanosized FeOOH-modified anion resin was studied in fixed bed column. Effect of bed height and flow rate on the breakthrough curves were investigated. Longer breakthrough time was obtained by increasing the bed height and decreasing the flow rate. Bed service depth time (BDST) model was applied to recount the relationship between bed service time and bed height. The value ofN0was calculated to be 21.4 g/L. Yoon-Nelson model, which fitted well with the experimental data, is allowable to estimate the breakthrough curves and characteristic parameters for p

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35

Bloem, E., M. de Gee, and G. H. de Rooij. "An effective parameterization to quantify multiple solute flux breakthrough curves." Hydrology and Earth System Sciences Discussions 11, no. 6 (2014): 6993–7017. http://dx.doi.org/10.5194/hessd-11-6993-2014.

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Abstract. To understand soil and groundwater contamination we study the temporal and spatial aspects of solute transport in the unsaturated zone. One monitoring instrument that captures both aspects is the multi-compartment sampler (MCS). With the MCS developed by Bloem et al. (2010) we are able to measure the downward solute fluxes in 100 compartments at the depth of installation of the MCS, with a minimal disturbance of the flow field. Over time this dataset results in 100 individual solute flux breakthrough curves (BTCs) (temporal aspect). Sorting the BTCs in descending order of solute mass

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36

Sharp, R. R., A. B. Cunningham, J. Komlos, and J. Billmayer. "Observation of thick biofilm accumulation and structure in porous media and corresponding hydrodynamic and mass transfer effects." Water Science and Technology 39, no. 7 (1999): 195–201. http://dx.doi.org/10.2166/wst.1999.0359.

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A series of flat plate, porous media reactor studies was performed to characterize the development and structure of thick biofilms in porous media and the subsequent effects on porous media hydrodynamics and mass transport variables including average pore velocity, hydrodynamic dispersivity, and (dye tracer) breakthrough curve features. Biofilms composed of either a mucoid strain of Pseudomonas aeruginosa or a non-mucoid strain of Ps. aeruginosa were established in the reactors over a 2-3 week period. Analysis of porous media biofilms was performed using a combination of image analysis, photog

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37

Jakobsen, R., K. Høgh Jensen, and K. L. Brettmann. "Tracer Test in Fractured Chalk." Hydrology Research 24, no. 4 (1993): 263–74. http://dx.doi.org/10.2166/nh.1993.0007.

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A two-well tracer test was conducted in eastern Denmark, in which a short duration pulse of lithium chloride was injected into a recharge well and made to flow through a fractured chalk aquifer to a discharge well. The wells were 25 m apart, and the concentration of lithium arriving at the discharge well was monitored at five vertical intervals in the well for a 21-day period. The observed breakthrough curves show a sharp breakthrough front, with an arrival time that is consistent with advective transport through the fractures in the chalk. The breakthrough curves also exhibit a long tail in t

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38

Pimentel, Catarina Helena, María Sonia Freire, Diego Gómez-Díaz, and Julia González-Álvarez. "Continuous Adsorption of Acid Wood Dyes onto an Activated Carbon Prepared from Pine Sawdust." Applied Sciences 14, no. 2 (2024): 841. http://dx.doi.org/10.3390/app14020841.

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In this paper, an activated carbon obtained from Pinus radiata sawdust is applied to remove blue, red, and black wood dyes from aqueous solutions in a fixed-bed column. The flow rate (7.7–30.8 mL min−1), initial dye concentration (25–500 mg L−1), and bed height (2–4 cm) highly influence the breakthrough-curves’ features. The results indicate that the adsorption capacity increased by decreasing the flow rate and increasing the initial dye concentration, except for the black dye, and increasing bed height, except for the red dye. In addition, the breakthrough time changed by modifying the studie

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39

Liu, Hai Ning, Hui Fang Zhang, Can Gao, Xiu Shen Ye, and Zhi Jian Wu. "Adsorption Breakthrough Curves for Alkaline-Earth Metal Ions on the Resins in a Fixed-Bed Column." Advanced Materials Research 884-885 (January 2014): 16–20. http://dx.doi.org/10.4028/www.scientific.net/amr.884-885.16.

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A column sorption study was carried out by using four resins (D113, D001, LS-1000, LS-5000) for the adsorption of alkaline-earth metal ions from aqueous solutions. The breakthrough curve was obtained as a function of feed flow rate, and the total and breakthrough capacity values of the resins were calculated. Four kinetic models: Adams-Bohart, Wolborska and Thomas models were applied to experimental data to predict the breakthrough curves of Na-form resins and to determine the characteristic parameters of the column useful for process design. All models were found suitable for describing the w

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40

Nedoma, Marek, Marek Staf, and Jan Hrdlička. "Experimental and simulation study of CO2 breakthrough curves in a fixed-bed adsorption process." Acta Polytechnica 62, no. 3 (2022): 370–85. http://dx.doi.org/10.14311/ap.2022.62.0370.

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This paper focuses on the laboratory experiments of low-temperature adsorption of CO2 at elevated pressure and on the validation of our mathematical model with the data obtained. The numerical approach uses fitting of adsorption isotherm parameters and sensitivity analysis of parameters influencing the breakthrough curve shape and onset time. We first evaluate the results of breakthrough experiments for zeolite 13X. Then, we use the results obtained to design a dynamic mathematical model to predict the breakthrough curve profile. Experimental results show that zeolite 13X possesses high adsorp

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41

Sánchez-Machado, Dalia I., Jaime López-Cervantes, Ma A. Correa-Murrieta, and Reyna G. Sánchez-Duarte. "Modeling of breakthrough curves for aqueous iron (III) adsorption on chitosan-sodium tripolyphosphate." Water Science and Technology 74, no. 10 (2016): 2297–304. http://dx.doi.org/10.2166/wst.2016.409.

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A fixed bed column packed with chitosan-sodium tripolyphosphate (CTPP) beads was used to remove aqueous Fe (III) ions. The adsorption of Fe (III) ions on CTPP beads was found to be dependent on operating conditions, such as the flow rate, adsorbent bed length, and feed concentration. The experimental data were assessed with Thomas, Adams-Bohart and Yoon-Nelson models to predict the breakthrough curves using linear regression. The breakthrough curves were better fitted with the Thomas and Yoon-Nelson models when the flow rate was varied and the feed concentration and the bed height of the colum

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42

Liu, Zheng, Sijie Zheng, and Daolong Zhang. "Al-Impregnated Granular Activated Carbon for Removal of Fluoride from Aqueous Solution: Batch and Fixed-Bed Column Study." Water 14, no. 21 (2022): 3554. http://dx.doi.org/10.3390/w14213554.

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Fluoride pollution in water has been reported in many regions and countries. Adsorption is the most commonly used process for treating fluoride-containing water. For industrial applications, the treatment of a pollutant is normally performed in continuous column mode. In this work, batch and lab-scale column studies were conducted by applying modified granular activated carbon (MGAC) to remove fluoride (F−) from an aqueous solution. MGAC was prepared by a wet impregnation method and characterized using SEM and FTIR. Batch studies presented the adsorption of F− onto MGAC following the Freundlic

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43

Kannan, Pravin, Priyabrata Pal, and Fawzi Banat. "Design of adsorption column for reclamation of methyldiethanolamine using homogeneous surface diffusion model." Oil & Gas Science and Technology – Revue d’IFP Energies nouvelles 75 (2020): 82. http://dx.doi.org/10.2516/ogst/2020073.

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A predictive simulation model was applied to design a fixed-bed adsorber for studying the removal of Total Organic Acid (TOA) anions from lean Methyldiethanolamine (MDEA) solution using Calcium Alginate Bentonite (CAB) clay hybrid composite adsorbent. Unlike other conventional techniques typically used for packed bed design, the predictive Homogeneous Surface Diffusion Model (HSDM) does not require any test column breakthrough curves a priori. Mass transfer coefficients and isotherm model parameters are provided as input data to HSDM for simulating column breakthrough curves. Various isotherm

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Tsai, Wan-Chi, Mark Daniel G. de Luna, Hanna Lee P. Bermillo-Arriesgado, Cybelle M. Futalan, James I. Colades, and Meng-Wei Wan. "Competitive Fixed-Bed Adsorption of Pb(II), Cu(II), and Ni(II) from Aqueous Solution Using Chitosan-Coated Bentonite." International Journal of Polymer Science 2016 (2016): 1–11. http://dx.doi.org/10.1155/2016/1608939.

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Fixed-bed adsorption studies using chitosan-coated bentonite (CCB) as adsorbent media were investigated for the simultaneous adsorption of Pb(II), Cu(II), and Ni(II) from a multimetal system. The effects of operational parameters such as bed height, flow rate, and initial concentration on the length of mass transfer zone, breakthrough time, exhaustion time, and adsorption capacity at breakthrough were evaluated. With increasing bed height and decreasing flow rate and initial concentration, the breakthrough and exhaustion time were observed to favorably increase. Moreover, the adsorption capaci

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Heijman, S. G. J., W. Siegers, R. Sterk, and R. Hopman. "Prediction of breakthrough of pesticides in GAC-filters and breakthrough of colour in ion-exchange-filters." Water Supply 2, no. 1 (2002): 103–8. http://dx.doi.org/10.2166/ws.2002.0013.

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Adsorption columns are widely used in drinking water treatment to improve a number of water quality parameters. Granular activated carbon filtration (GAC) can be used to decrease the concentration of DOC, colour, taste, odour and pesticides. Columns filled with ion-exchange resins are used to remove colour, nitrate and DOC. The regeneration frequency of these types of filters depends strongly on the natural water quality. Especially the DOC-concentration and DOC-composition determines the efficiency of the processes. Because pilot-plant experiments with realistic contact-times will last for mo

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Rajniak, P., and J. Ilavský. "Mathematical and Experimental Modelling of Adsorption in Fixed Bed. II. Experimental Investigation of Nonisothermal Single Solute Adsorption and a Priori Adsorber Simulation." Adsorption Science & Technology 3, no. 4 (1986): 245–52. http://dx.doi.org/10.1177/026361748600300405.

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The adsorption separation process of n-heptane on a molecular sieve in a fixed bed adsorber is investigated. Experimental concentration and temperature breakthrough curves are obtained using different gas inlet concentration and temperature, different bed length and gas mixture flow rate. The mentioned experimental data are simulated a priori by means of a two-phase mathematical model. The model parameter values used in the simulations are estimated either through available semiempirical correlations or by independent experimental runs. An example of predicted and experimental concentration an

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Futalan, Cybelle Morales, and Meng-Wei Wan. "Fixed-Bed Adsorption of Lead from Aqueous Solution Using Chitosan-Coated Bentonite." International Journal of Environmental Research and Public Health 19, no. 5 (2022): 2597. http://dx.doi.org/10.3390/ijerph19052597.

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In this study, fixed-bed adsorption of Pb(II) from an aqueous solution using chitosan-coated bentonite (CCB) was investigated. Characterization of CCB was performed using Fourier transform infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM). The effects of varying bed height (1.3 to 4.3 cm), flow rate (0.20 to 0.60 mL/min), and initial concentration (500 to 1500 mg/L) on the length of mass transfer zone (Zm) and adsorption capacity at breakthrough (qb) and exhaustion (qe) were examined. Low flow rate and high bed height were determined to cause a longer time to reach breakthro

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Apiratikul, Ronbanchob, and Khim Hoong Chu. "Improved fixed bed models for correlating asymmetric adsorption breakthrough curves." Journal of Water Process Engineering 40 (April 2021): 101810. http://dx.doi.org/10.1016/j.jwpe.2020.101810.

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Yu, C., A. W. Warrick, and M. H. Conklin. "A moment method for analyzing breakthrough curves of step inputs." Water Resources Research 35, no. 11 (1999): 3567–72. http://dx.doi.org/10.1029/1999wr900225.

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Shackelford, Charles D., and Patrick L. Redmond. "Solute Breakthrough Curves for Processed Kaolin at Low Flow Rates." Journal of Geotechnical Engineering 121, no. 1 (1995): 17–32. http://dx.doi.org/10.1061/(asce)0733-9410(1995)121:1(17).

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