Flocculation of diatomite by methylated milk casein in seawater

Seki, Hideshi; Suzuki, Akira; Shinguh, Masahiro; Maruyama, Hideo

doi:10.1016/j.jcis.2003.09.025


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Flocculation of diatomite by methylated milk casein in seawater

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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/44070

Title:	Flocculation of diatomite by methylated milk casein in seawater
Authors:	Seki, Hideshi Browse this author →KAKEN DB
	Suzuki, Akira Browse this author
	Shinguh, Masahiro Browse this author
	Maruyama, Hideo Browse this author →KAKEN DB
Keywords:	Flocculation
	Methylated protein
	Milk casein
	Seawater
	Diatomite
Issue Date:	15-Feb-2004
Publisher:	Elsevier
Journal Title:	Journal of Colloid and Interface Science
Volume:	270
Issue:	2
Start Page:	359
End Page:	363
Publisher DOI:	10.1016/j.jcis.2003.09.025
Abstract:	A new biodegradable flocculant was prepared from a common and inexpensive protein. Milk casein was methylated in a 0.05 M HCl methyl alcohol solution at room temperature. The methylated milk casein (MeCS) having a methylation degree of 81% was applied to the separation or flocculation of diatomite in seawater (pH8.1±0.1) at room temperature (18 - 23°C). The flocculating ability of MeCS was evaluated by a sedimentation balance method (cumulative measuring method). The diatomite suspension was effectively flocculated by the addition of a small amount of MeCS (0.25 wt% of the diatomite weight). The results of sedimentation analysis showed that the size-frequency curve had a very sharp and high peak thus the diatomite floc formed by MeCS had a rather uniform size. The settling velocity of diatomite floc at the appropriate MeCS dosages (0.25 - 2 wt% to diatomite) was about 3 × 10-3 m s-1.
Type:	article (author version)
URI:	http://hdl.handle.net/2115/44070
Appears in Collections:	水産科学院・水産科学研究院 (Graduate School of Fisheries Sciences / Faculty of Fisheries Sciences) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

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