Understanding the coagulation mechanism and floc properties induced by Fe(VI) and FeCl3: population balance modeling

Coagulation kinetics and floc properties are of great fundamental and practical importance in the field of water treatment. To investigate the performance of Fe(VI) and Fe(III) salt on particle coagulation, Malvern Mastersizer 2000 was employed to continuously and simultaneously monitor the kaolin f...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Xinliang Liu, Hailiang Yin, Jian Zhao, Ziqi Guo, Zhen Liu, Yizhou Sang
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	collision efficiency ferric(iii) chloride floc strength population balance model potassium ferrate(vi) restructure rate Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/4c5f267a2194479190ffffd006154394
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:4c5f267a2194479190ffffd006154394
record_format	dspace
spelling	oai:doaj.org-article:4c5f267a2194479190ffffd0061543942021-11-06T11:05:22ZUnderstanding the coagulation mechanism and floc properties induced by Fe(VI) and FeCl3: population balance modeling0273-12231996-973210.2166/wst.2021.150https://doaj.org/article/4c5f267a2194479190ffffd0061543942021-05-01T00:00:00Zhttp://wst.iwaponline.com/content/83/10/2377https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732Coagulation kinetics and floc properties are of great fundamental and practical importance in the field of water treatment. To investigate the performance of Fe(VI) and Fe(III) salt on particle coagulation, Malvern Mastersizer 2000 was employed to continuously and simultaneously monitor the kaolin floc size and structure change, and population balance modeling was used to investigate the coagulation mechanism. The results show dosage increase had positive effect on collision efficiency and floc strength and negative effect on restructure rate. Low shear rate resulted in higher collision efficiency and stronger floc. Low water temperature had a pronounced detrimental effect on coagulation kinetics. Temperature increase showed the most significant positive effect on collision efficiency, floc strength and restructure rate. The optimum pH zone for the coagulation was found to be between 6 and 8. Further pH increase lowered the collision efficiency and floc strength and increased the restructure rate. FeCl3 resulted in a larger ratio of the mass to volume of kaolin flocs (compactness) than those induced by ferrate. HIGHLIGHTS Population balance modeling achieved excellent approximation of coagulation process.; FeCl3 produced larger, stronger and more compact flocs than those by ferrate(VI).; Dosage increase had positive effect on collision efficiency and floc strength.; High temperature resulted in high collision efficiency, floc strength and restructure.; Optimum pH for both coagulation systems was between 6 and 8.;Xinliang LiuHailiang YinJian ZhaoZiqi GuoZhen LiuYizhou SangIWA Publishingarticlecollision efficiencyferric(iii) chloridefloc strengthpopulation balance modelpotassium ferrate(vi)restructure rateEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 83, Iss 10, Pp 2377-2388 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	collision efficiency ferric(iii) chloride floc strength population balance model potassium ferrate(vi) restructure rate Environmental technology. Sanitary engineering TD1-1066
spellingShingle	collision efficiency ferric(iii) chloride floc strength population balance model potassium ferrate(vi) restructure rate Environmental technology. Sanitary engineering TD1-1066 Xinliang Liu Hailiang Yin Jian Zhao Ziqi Guo Zhen Liu Yizhou Sang Understanding the coagulation mechanism and floc properties induced by Fe(VI) and FeCl3: population balance modeling
description	Coagulation kinetics and floc properties are of great fundamental and practical importance in the field of water treatment. To investigate the performance of Fe(VI) and Fe(III) salt on particle coagulation, Malvern Mastersizer 2000 was employed to continuously and simultaneously monitor the kaolin floc size and structure change, and population balance modeling was used to investigate the coagulation mechanism. The results show dosage increase had positive effect on collision efficiency and floc strength and negative effect on restructure rate. Low shear rate resulted in higher collision efficiency and stronger floc. Low water temperature had a pronounced detrimental effect on coagulation kinetics. Temperature increase showed the most significant positive effect on collision efficiency, floc strength and restructure rate. The optimum pH zone for the coagulation was found to be between 6 and 8. Further pH increase lowered the collision efficiency and floc strength and increased the restructure rate. FeCl3 resulted in a larger ratio of the mass to volume of kaolin flocs (compactness) than those induced by ferrate. HIGHLIGHTS Population balance modeling achieved excellent approximation of coagulation process.; FeCl3 produced larger, stronger and more compact flocs than those by ferrate(VI).; Dosage increase had positive effect on collision efficiency and floc strength.; High temperature resulted in high collision efficiency, floc strength and restructure.; Optimum pH for both coagulation systems was between 6 and 8.;
format	article
author	Xinliang Liu Hailiang Yin Jian Zhao Ziqi Guo Zhen Liu Yizhou Sang
author_facet	Xinliang Liu Hailiang Yin Jian Zhao Ziqi Guo Zhen Liu Yizhou Sang
author_sort	Xinliang Liu
title	Understanding the coagulation mechanism and floc properties induced by Fe(VI) and FeCl3: population balance modeling
title_short	Understanding the coagulation mechanism and floc properties induced by Fe(VI) and FeCl3: population balance modeling
title_full	Understanding the coagulation mechanism and floc properties induced by Fe(VI) and FeCl3: population balance modeling
title_fullStr	Understanding the coagulation mechanism and floc properties induced by Fe(VI) and FeCl3: population balance modeling
title_full_unstemmed	Understanding the coagulation mechanism and floc properties induced by Fe(VI) and FeCl3: population balance modeling
title_sort	understanding the coagulation mechanism and floc properties induced by fe(vi) and fecl3: population balance modeling
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/4c5f267a2194479190ffffd006154394
work_keys_str_mv	AT xinliangliu understandingthecoagulationmechanismandflocpropertiesinducedbyfeviandfecl3populationbalancemodeling AT hailiangyin understandingthecoagulationmechanismandflocpropertiesinducedbyfeviandfecl3populationbalancemodeling AT jianzhao understandingthecoagulationmechanismandflocpropertiesinducedbyfeviandfecl3populationbalancemodeling AT ziqiguo understandingthecoagulationmechanismandflocpropertiesinducedbyfeviandfecl3populationbalancemodeling AT zhenliu understandingthecoagulationmechanismandflocpropertiesinducedbyfeviandfecl3populationbalancemodeling AT yizhousang understandingthecoagulationmechanismandflocpropertiesinducedbyfeviandfecl3populationbalancemodeling
_version_	1718443727356166144

Understanding the coagulation mechanism and floc properties induced by Fe(VI) and FeCl3: population balance modeling

Ejemplares similares