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Characterization of floc size, strength and structure in various aluminum coagulants treatment

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Abstract.
Flocs generated in various aluminum coagulants treatment exhibit difference in size, strength and
structure. The formation, breakage and re-formation of flocs were investigated by using a laser
diffraction instrument (Malvern Mastersizer 2000, Malvern, UK). Different Al coagulants – conventional
Al salt (AlCl3), polyaluminum chloride (PAC-1) and the purified polyaluminum chloride (PAC-2) – were
investigated for the coagulation of humic acid (HA). The results showed the properties of HA flocs
depend on which species of aluminum used. The monomeric and dimeric aluminum species (denoted
as Almono) formed the largest and strongest HA flocs with longest growth time. The HA flocs formed by
Al13O4(OH)247+ (Al13 for short) is the smallest and weakest. The properties of HA flocs made it possible to
investigate the relationship between the flocs growth process and aluminum species.

Keywords:
Al species
Humic acid
Size
Floc strength
Fractal dimension

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Informasi Detail

Judul Seri

Journal of Colloid and Interface Science

No. Panggil

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Penerbit

London : Elsevier Inc.., 2009

Deskripsi Fisik

Journal of Colloid and Interface Science 332 (2009) 354–359

Bahasa

English

ISBN/ISSN

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Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

KIMIA

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

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