Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 552248
Title Diffusion of hydrophilic organic micropollutants in granular activated carbon with different pore sizes
Author(s) Piai, Laura; Dykstra, Jouke E.; Adishakti, Mahesa G.; Blokland, Marco; Langenhoff, Alette A.M.; Wal, Albert van der
Source Water Research 162 (2019). - ISSN 0043-1354 - p. 518 - 527.
DOI https://doi.org/10.1016/j.watres.2019.06.012
Department(s) Environmental Technology
WIMEK
BU Veterinary Drugs
Publication type Refereed Article in a scientific journal
Publication year 2019
Keyword(s) Activated carbon - Adsorption kinetics - Hydrophilic micropollutants - Intra-particle diffusion - Pore diffusion
Abstract

Hydrophilic organic micropollutants are commonly detected in source water used for drinking water production. Effective technologies to remove these micropollutants from water include adsorption onto granular activated carbon in fixed-bed filters. The rate-determining step in adsorption using activated carbon is usually the adsorbate diffusion inside the porous adsorbent. The presence of mesopores can facilitate diffusion, resulting in higher adsorption rates. We used two different types of granular activated carbon, with and without mesopores, to study the adsorption rate of hydrophilic micropollutants. Furthermore, equilibrium studies were performed to determine the affinity of the selected micropollutants for the activated carbons. A pore diffusion model was applied to the kinetic data to obtain pore diffusion coefficients. We observed that the adsorption rate is influenced by the molecular size of the micropollutant as well as the granular activated carbon pore size.

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