Role of flocculation aid particles in clarification of colloidal suspension using composite dry powdered flocculant

The clarification method by using composite flocculants in powder form has been proposed in the literature. In this study, fundamental aspects of the mechanism of turbidity removal using a composite dry powdered flocculant were investigated. The model composite flocculant comprises a mixture of ino...

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Main Authors:	Iwata, Masashi, Shimo, Takayuki, Tanaka, Takanori, Jami, Mohammed Saedi
Format:	Conference or Workshop Item
Language:	English
Published:	2016
Subjects:	TP155 Chemical engineering
Online Access:	http://irep.iium.edu.my/52594/ http://irep.iium.edu.my/52594/1/52594_ROLE%20OF%20FLOCCULATION.pdf

id	iium-52594
recordtype	eprints
spelling	iium-525942016-11-24T08:48:41Z http://irep.iium.edu.my/52594/ Role of flocculation aid particles in clarification of colloidal suspension using composite dry powdered flocculant Iwata, Masashi Shimo, Takayuki Tanaka, Takanori Jami, Mohammed Saedi TP155 Chemical engineering The clarification method by using composite flocculants in powder form has been proposed in the literature. In this study, fundamental aspects of the mechanism of turbidity removal using a composite dry powdered flocculant were investigated. The model composite flocculant comprises a mixture of inorganic flocculant (aluminum sulfate), anionic polymer flocculant, and a flocculation aid (calcium carbonate powder of 10 μm median diameter). A suspension of polymethyl methacrylate particle (PMMA, 0.15 or 0.4 μm in diameter) was used as a colloidal material. When the composite dry powdered flocculant is added to the colloidal suspension, the inorganic flocculant dissolves immediately. The polymer flocculant particles disperse well in the suspension with the help of flocculation aid particles and dissolve moderately. Flocculation aid particles play an important role; i.e. they accelerate flocculation of PMMA particles and attenuate the ability of the polymer flocculant particles to produce undissolved lumps. Since flocculation aid particles are much bigger than the colloidal particles, the aid particles act as targets for heterocoagulation of all suspended particles. The existence of flocculation aid particles in the flocculation system seems to stabilize the flocculation process. It was observed that by the usage of composite flocculant which results in clear supernatant, percentages of adsorbed polymer flocculant were nearly constant; this implies that the adsorption of polymer flocculant onto solid particles is diffusion-limited. 2016-10-11 Conference or Workshop Item NonPeerReviewed application/pdf en http://irep.iium.edu.my/52594/1/52594_ROLE%20OF%20FLOCCULATION.pdf Iwata, Masashi and Shimo, Takayuki and Tanaka, Takanori and Jami, Mohammed Saedi (2016) Role of flocculation aid particles in clarification of colloidal suspension using composite dry powdered flocculant. In: FILTECH 2016, 11th-13th Oct. 2016, Cologne, Germany. (Unpublished)
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English
topic	TP155 Chemical engineering
spellingShingle	TP155 Chemical engineering Iwata, Masashi Shimo, Takayuki Tanaka, Takanori Jami, Mohammed Saedi Role of flocculation aid particles in clarification of colloidal suspension using composite dry powdered flocculant
description	The clarification method by using composite flocculants in powder form has been proposed in the literature. In this study, fundamental aspects of the mechanism of turbidity removal using a composite dry powdered flocculant were investigated. The model composite flocculant comprises a mixture of inorganic flocculant (aluminum sulfate), anionic polymer flocculant, and a flocculation aid (calcium carbonate powder of 10 μm median diameter). A suspension of polymethyl methacrylate particle (PMMA, 0.15 or 0.4 μm in diameter) was used as a colloidal material. When the composite dry powdered flocculant is added to the colloidal suspension, the inorganic flocculant dissolves immediately. The polymer flocculant particles disperse well in the suspension with the help of flocculation aid particles and dissolve moderately. Flocculation aid particles play an important role; i.e. they accelerate flocculation of PMMA particles and attenuate the ability of the polymer flocculant particles to produce undissolved lumps. Since flocculation aid particles are much bigger than the colloidal particles, the aid particles act as targets for heterocoagulation of all suspended particles. The existence of flocculation aid particles in the flocculation system seems to stabilize the flocculation process. It was observed that by the usage of composite flocculant which results in clear supernatant, percentages of adsorbed polymer flocculant were nearly constant; this implies that the adsorption of polymer flocculant onto solid particles is diffusion-limited.
format	Conference or Workshop Item
author	Iwata, Masashi Shimo, Takayuki Tanaka, Takanori Jami, Mohammed Saedi
author_facet	Iwata, Masashi Shimo, Takayuki Tanaka, Takanori Jami, Mohammed Saedi
author_sort	Iwata, Masashi
title	Role of flocculation aid particles in clarification of colloidal suspension using composite dry powdered flocculant
title_short	Role of flocculation aid particles in clarification of colloidal suspension using composite dry powdered flocculant
title_full	Role of flocculation aid particles in clarification of colloidal suspension using composite dry powdered flocculant
title_fullStr	Role of flocculation aid particles in clarification of colloidal suspension using composite dry powdered flocculant
title_full_unstemmed	Role of flocculation aid particles in clarification of colloidal suspension using composite dry powdered flocculant
title_sort	role of flocculation aid particles in clarification of colloidal suspension using composite dry powdered flocculant
publishDate	2016
url	http://irep.iium.edu.my/52594/ http://irep.iium.edu.my/52594/1/52594_ROLE%20OF%20FLOCCULATION.pdf
first_indexed	2023-09-18T21:14:29Z
last_indexed	2023-09-18T21:14:29Z
_version_	1777411470812774400

Role of flocculation aid particles in clarification of colloidal suspension using composite dry powdered flocculant

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