The separation of kreutzonit particles by cationic pullulan derivatives from model suspension

In the present work the flocculation properties of some cationic derivatives based on pullulan have been tested in a synthetic suspension of zirconium silicate (kreutzonit). The flocculants contain either quaternary ammonium salt groups (grafted chains, poly[(3-acrylamidopropyl)-trimethylammonium ch...

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Autores principales:	Luminita Ghimici, Marieta Constantin
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Pullulan derivatives Kreutzonit Flocculation mechanism UV-Vis spectroscopy Zeta potential Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/bee3e585e2b84a60afd68140caee96f2
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spelling	oai:doaj.org-article:bee3e585e2b84a60afd68140caee96f22021-11-06T04:41:59ZThe separation of kreutzonit particles by cationic pullulan derivatives from model suspension2667-010010.1016/j.envc.2021.100352https://doaj.org/article/bee3e585e2b84a60afd68140caee96f22021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2667010021003267https://doaj.org/toc/2667-0100In the present work the flocculation properties of some cationic derivatives based on pullulan have been tested in a synthetic suspension of zirconium silicate (kreutzonit). The flocculants contain either quaternary ammonium salt groups (grafted chains, poly[(3-acrylamidopropyl)-trimethylammonium chloride] onto the pullulan (P-g-pAPTAC)) or tertiary amine groups (3-dimethylamino-1-propylamine-pullulan) (DMAPAX-P). The impact of polymer dose, the charge content and type (tertiary amine or quaternary ammonium salt groups), the grafted chains length and the suspension pH on the flocculation efficiency have been taken into consideration. The separation of mixtures consisting of kreutzonit, K-feldspar, kaolin, hematite (Fe2O3) particles by some of the above mentioned cationic derivatives was also followed. The addition of different doses of pullulan derivatives to kreutzonit dispersion as well as to particles mixture led to the increase of particles removal efficiency up to 95–99% in the optimum dose intervals. The charge patch and bridging mechanisms played an important role in the flocculation process, as revealed by zeta potential measurements. Flocs resulting from the flocculation process have been used successfully in removal of fungicide Bordeaux mixture particles from synthetic wastewater; a removal efficiency higher than 95% has been found for the optimum amount of flocs (10 g flocs per liter of fungicide suspension).Luminita GhimiciMarieta ConstantinElsevierarticlePullulan derivativesKreutzonitFlocculation mechanismUV-Vis spectroscopyZeta potentialEnvironmental sciencesGE1-350ENEnvironmental Challenges, Vol 5, Iss , Pp 100352- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Pullulan derivatives Kreutzonit Flocculation mechanism UV-Vis spectroscopy Zeta potential Environmental sciences GE1-350
spellingShingle	Pullulan derivatives Kreutzonit Flocculation mechanism UV-Vis spectroscopy Zeta potential Environmental sciences GE1-350 Luminita Ghimici Marieta Constantin The separation of kreutzonit particles by cationic pullulan derivatives from model suspension
description	In the present work the flocculation properties of some cationic derivatives based on pullulan have been tested in a synthetic suspension of zirconium silicate (kreutzonit). The flocculants contain either quaternary ammonium salt groups (grafted chains, poly[(3-acrylamidopropyl)-trimethylammonium chloride] onto the pullulan (P-g-pAPTAC)) or tertiary amine groups (3-dimethylamino-1-propylamine-pullulan) (DMAPAX-P). The impact of polymer dose, the charge content and type (tertiary amine or quaternary ammonium salt groups), the grafted chains length and the suspension pH on the flocculation efficiency have been taken into consideration. The separation of mixtures consisting of kreutzonit, K-feldspar, kaolin, hematite (Fe2O3) particles by some of the above mentioned cationic derivatives was also followed. The addition of different doses of pullulan derivatives to kreutzonit dispersion as well as to particles mixture led to the increase of particles removal efficiency up to 95–99% in the optimum dose intervals. The charge patch and bridging mechanisms played an important role in the flocculation process, as revealed by zeta potential measurements. Flocs resulting from the flocculation process have been used successfully in removal of fungicide Bordeaux mixture particles from synthetic wastewater; a removal efficiency higher than 95% has been found for the optimum amount of flocs (10 g flocs per liter of fungicide suspension).
format	article
author	Luminita Ghimici Marieta Constantin
author_facet	Luminita Ghimici Marieta Constantin
author_sort	Luminita Ghimici
title	The separation of kreutzonit particles by cationic pullulan derivatives from model suspension
title_short	The separation of kreutzonit particles by cationic pullulan derivatives from model suspension
title_full	The separation of kreutzonit particles by cationic pullulan derivatives from model suspension
title_fullStr	The separation of kreutzonit particles by cationic pullulan derivatives from model suspension
title_full_unstemmed	The separation of kreutzonit particles by cationic pullulan derivatives from model suspension
title_sort	separation of kreutzonit particles by cationic pullulan derivatives from model suspension
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/bee3e585e2b84a60afd68140caee96f2
work_keys_str_mv	AT luminitaghimici theseparationofkreutzonitparticlesbycationicpullulanderivativesfrommodelsuspension AT marietaconstantin theseparationofkreutzonitparticlesbycationicpullulanderivativesfrommodelsuspension AT luminitaghimici separationofkreutzonitparticlesbycationicpullulanderivativesfrommodelsuspension AT marietaconstantin separationofkreutzonitparticlesbycationicpullulanderivativesfrommodelsuspension
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The separation of kreutzonit particles by cationic pullulan derivatives from model suspension

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