Searched for: subject:"adsorption"
(1 - 20 of 52)

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Zietzschmann, F.E. (author), Dittmar, Stefan (author), Splettstößer, Lydia (author), Hunsicker, Jonas (author), Dittmann, Daniel (author), Meinel, Felix (author), Rößler, Annette (author), Metzger, Steffen (author), Jekel, Martin (author), Ruhl, Aki Sebastian (author)
Powdered activated carbon (PAC) for organic micro-pollutant (OMP) removal can be applied effectively on wastewater treatment plant (WWTP) effluents by using re-circulation schemes, accumulating the PAC in the system. This technique is complex because several factors are unknown: (i) the PAC concentration in the system, (ii) specific and...
journal article 2019
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Andres Garcia, E. (author), Dikhtiarenko, Alla (author), Fauth, Francois (author), Silvestre-Albero, Joaquin (author), Ramos-Fernandez, Enrique V. (author), Gascon Sabate, J. (author), Corma, Avelino (author), Kapteijn, F. (author)
Clathrates are well-known compounds whose low thermal stability makes them extremely rare and appreciated. Although their formation mechanism is still surrounded by many uncertainties, these ice-like structures have the potential to be an alternative for transport and storage of different gases, especially methane. For the formation of...
journal article 2019
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Suresh Kumar, P. (author), Korving, Leon (author), Keesman, Karel J. (author), van Loosdrecht, Mark C.M. (author), Witkamp, G.J. (author)
Phosphate is a vital nutrient but its presence in surface waters even at very low concentrations can lead to eutrophication. Adsorption is often suggested as a step for reducing phosphate down to very low concentrations. Porous metal oxides can be used as granular adsorbents that have a high surface area and hence a high adsorption capacity....
journal article 2019
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Saffarionpour, S. (author), de Jong, Tessa F. (author), van der Wielen, L.A.M. (author), Brouwer, Eric (author), Ottens, M. (author)
For simulating an adsorption/elution step for separation and recovery of flavor-active esters in beer in the presence of ethanol at various temperatures, and validating the predicted breakthrough behavior, equilibrium data on concentration of each ester is required. This work evaluates the application of frontal analysis method (FA) for...
journal article 2019
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Poursaeidesfahani, A. (author), Andres Garcia, E. (author), de Lange, M.F. (author), Torres-Knoop, Ariana (author), Rigutto, Marcello (author), Nair, Nitish (author), Kapteijn, F. (author), Gascon Sabate, J. (author), Dubbeldam, D. (author), Vlugt, T.J.H. (author)
A mathematical model is used to predict adsorption isotherms from experimentally measured breakthrough curves. Using this approach, by performing only breakthrough experiments for a mixture of two (or more) components, one can obtain pure component adsorption isotherms up to the pressure of the experiment. As a case study, the adsorption of...
journal article 2019
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Gude, J.C.J. (author), Rietveld, L.C. (author), van Halem, D. (author)
In the top layer of aerated rapid sand filtration systems, uncharged As(III) is biologically converted to charged As(V). Subsequently, the main removal mechanism for As(V) is adsorption onto oxidised, flocculated Fe(III) (hydrous ferric hydroxides; HFO). The aim of this research was to understand the interactions between As and Fe in...
journal article 2018
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Suresh Kumar, P. (author)
Eutrophication and the resulting formation of harmful algal blooms causes huge economic and environmental damages. Phosphorus (P) has been identified as a major limiting nutrient for eutrophication. Phosphorous concentration greater than 100 µg P/L is usually considered high enough for causing eutrophication. The strictest regulations however...
doctoral thesis 2018
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Jiang, N. (author), Shang, R. (author), Heijman, Sebastiaan (author), Rietveld, L.C. (author)
High-silica zeolites have been found to be effective adsorbents for the removal of organic micro-pollutants (OMPs) from impaired water, including various pharmaceuticals, personal care products, industrial chemicals, etc. In this review, the properties and fundamentals of high-silica zeolites are summarised. Recent research on mechanisms and...
review 2018
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de Ridder, D.J. (author), van de Wetering, T.S.C.M. (author), van Dijk, T. (author), van Halem, D. (author)
on Fe flocculation and As(III) removal in the complex natural water matrix. For this purpose, three different anaerobic groundwaters were selected and...
journal article 2018
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Hadi Mosleh, Mojgan (author), Turner, Matthew (author), Sedighi, Majid (author), Vardon, P.J. (author)
stored in coal due to changes in...
journal article 2018
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de Lange, M.F. (author), Kapteijn, F. (author), Moultos, O. (author), Vlugt, T.J.H. (author)
A computational screening of 2930 experimentally synthesized metal-organic frameworks (MOFs) is carried out to find the best-performing structures for adsorption-driven cooling (AC) applications with methanol and ethanol as working fluids. The screening methodology consists of four subsequent screening steps for each adsorbate. At the end of...
journal article 2018
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Suresh Kumar, P. (author), Ejerssa, Wondesen Workneh (author), Wegener, Carita Clarissa (author), Korving, Leon (author), Dugulan, A.I. (author), Temmink, Hardy (author), van Loosdrecht, Mark C.M. (author), Witkamp, G.J. (author)
Phosphate is a vital nutrient for life but its discharge from wastewater effluents can lead to eutrophication. Adsorption can be used as effluent polishing step to reduce phosphate to very low concentrations. Adsorbent reusability is an important parameter to make the adsorption process economically feasible. This implies that the adsorbent...
journal article 2018
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Yang, Ning (author), Yang, Daoguo (author), Zhang, G.Q. (author), Chen, Liangbiao (author), Liu, Dongjing (author), Cai, Miao (author), Fan, Xuejun (author)
The effects of graphene stacking are investigated by comparing the results of methane adsorption energy, electronic performance, and the doping feasibility of five dopants (i.e., B, N, Al, Si, and P) via first-principles theory. Both zigzag and armchair graphenes are considered. It is found that the zigzag graphene with Bernal stacking has...
journal article 2018
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Zuo, Y. (author), Ye, G. (author)
The pore structure of alkali-activated slag has a significant influence on its performance. However, the literature shows insufficient studies regarding the suitability of different techniques for characterizing the pore structure and the influences of Na2O and curing age on pore structure development. In pursuit of a better understanding, the...
journal article 2018
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Ouyang, X. (author), Koleva, D.A. (author), Ye, G. (author), van Breugel, K. (author)
A complete understanding of the mechanisms upon which a filler acts in a cement-based material, e.g. as a C–S–H nucleation and/or growth-inducing factor, is of high importance. Although various studies report on accelerated cement hydration in the presence of fillers, the reason behind these observations is not completely understood yet. This...
journal article 2017
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Fernandez Dacosta, C. (author), Van Der Spek, Mijndert (author), Hung, Christine Roxanne (author), Oregionni, Gabriel David (author), Skagestad, Ragnhild (author), Parihar, Prashant (author), Gokak, D. T. (author), Strømman, Anders Hammer (author), Ramirez Ramirez, C.A. (author)
is either stored, or partly...
journal article 2017
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Sajadi, B. (author), Goosen, J.F.L. (author), van Keulen, A. (author)
The electrostatic instability (pull-in) of a flat electrode in a parallel plate capacitor has been shown to be highly sensitive to external mechanical loads such as pressure. In this paper, we substantiate the possibility of prompting additional unstable configurations in such a system, with a remarkable sensitivity to the applied pressure....
journal article 2017
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Suresh Kumar, P. (author), Prot, T.J.F. (author), Korving, Leon (author), Keesman, Karel J. (author), Dugulan, A.I. (author), van Loosdrecht, Mark C.M. (author), Witkamp, G.J. (author)
Adsorption is often suggested for to reach very low phosphate levels in municipal wastewater effluent and even to recover phosphate. Adsorbent performance is usually associated with surface area but the exact role of the pore size distribution (PSD) is unclear. Here, we show the effect of the PSD on phosphate adsorption. Granular activated...
journal article 2017
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Luna-Triguero, Azahara (author), Vicent Luna, J.M. (author), Becker, T.M. (author), Vlugt, T.J.H. (author), Dubbeldam, D. (author), Gomez Alvarez, P (author), Calero, S (author)
An increase in demand for energy efficient processes for the separation of saturated and unsaturated light hydrocarbons mixtures drives the need of noncryogenic processes. The adsorptive separation using Metal-Organic Frameworks with coordinatively unsaturated metal sites may provide a cost-effective alternative due to the strong binding of the...
journal article 2017
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Farajzadeh, R. (author), Bedrikovetsky, P (author), Lotfollahi, M (author), Lake, L. W. (author)
Physical adsorption and mechanical entrapment are two major causes of polymer retention in porous media. Physical adsorption is considered an equilibrium process and is often modeled by assuming a Langmuir isotherm. The outcome is a steady state pressure response because the permeability reduction is also accounted for by adsorption. However,...
journal article 2016
Searched for: subject:"adsorption"
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