caa a22 4500 606196293 CHVBK 20210128100923.0 cr unu---uuuuu 210128e20150401xx s 000 0 eng 10.1007/s10934-015-9920-1 doi (NATIONALLICENCE)springer-10.1007/s10934-015-9920-1 Surface interaction of humic acids with natural and synthetic phillipsite [Elektronische Daten] [A. Colella, B. de Gennaro, S. Salvestrini, C. Colella] Starting from previous encouraging results, pointing out the ability of natural zeolites to remove large, hydrophilic, organic molecules from water, this paper deals with the surface interactions between humic acids, a frequent contaminant of natural waters, and the zeolite phillipsite, with the aim to obtain valuable insights on the possible use of low-cost, natural phillipsite-rich materials in decontamination technology. Accordingly, an enriched sample of Neapolitan yellow tuff, containing ca. 70% phillipsite, was compared with a synthetic phillipsite in both kinetic and equilibrium sorption experiments of humic acids from model waters. Tests, carried out at 25°C, were performed on Ca2+-pre-exchanged samples, which proved to be more effective in the sorption process. The results highlighted the marked affinity of phillipsite for the humic acids, better than any other zeolite tested previously, pointing out, moreover, that natural phillipsite behaves as a slightly diluted phillipsite, with no adverse effects from the mineral impurities present in the sample. Moreover, natural phillipsite performance, in both kinetic tests and in sorption capacity, was comparatively better than the synthetic counterpart, which was attributed to the presence of structural defects in the latter, due to the stressing conditions under which it had been obtained. Springer Science+Business Media New York, 2015 Sorption nationallicence Humic acids nationallicence Zeolite nationallicence Natural phillipsite nationallicence Synthetic phillipsite nationallicence Colella A. Dipartimento di Scienze della Terra, dell'Ambiente e delle Risorse, Università Federico II, Via Mezzocannone 8, 80134, Naples, Italy aut de Gennaro B. Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale, Università Federico II, Piazzale V. Tecchio 80, 80125, Naples, Italy aut Salvestrini S. Dipartimento di Scienze e Tecnologie Ambientali, Biologiche e Farmaceutiche, Seconda Università di Napoli, Via Vivaldi 43, 81100, Caserta, Italy aut Colella C. Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale, Università Federico II, Piazzale V. Tecchio 80, 80125, Naples, Italy aut Journal of Porous Materials Springer US; http://www.springer-ny.com 22/2(2015-04-01), 501-509 1380-2224 22:2<501 2015 22 10934 https://doi.org/10.1007/s10934-015-9920-1 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10934-015-9920-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Colella A. Dipartimento di Scienze della Terra, dell'Ambiente e delle Risorse, Università Federico II, Via Mezzocannone 8, 80134, Naples, Italy aut NATIONALLICENCE 700 1- de Gennaro B. Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale, Università Federico II, Piazzale V. Tecchio 80, 80125, Naples, Italy aut NATIONALLICENCE 700 1- Salvestrini S. Dipartimento di Scienze e Tecnologie Ambientali, Biologiche e Farmaceutiche, Seconda Università di Napoli, Via Vivaldi 43, 81100, Caserta, Italy aut NATIONALLICENCE 700 1- Colella C. Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale, Università Federico II, Piazzale V. Tecchio 80, 80125, Naples, Italy aut NATIONALLICENCE 773 0- Journal of Porous Materials Springer US; http://www.springer-ny.com 22/2(2015-04-01), 501-509 1380-2224 22:2<501 2015 22 10934