Flocculation properties of pectin in various suspensions.
Pectin had a flocculating activity and its flocculating activities in various suspensions were investigated. Flocculating activity of pectin in a kaolin suspension was markedly stimulated by the addition of Al3+ and Fe3+ to the suspension. Optimum temperature for flocculating activity of pectin in the kaolin suspension was around 30 degrees C and high flocculating activity was obtained when 30 mg/l of pectin and 0.2 mM Fe3+ were added to the suspension. Other inorganic suspensions of activated carbon and acid clay were flocculated by pectin in the presence of Al3+ or Fe3+. Flocculation of organic suspensions such as cellulose and yeast by pectin occurred when 0.1-0.2 mM Fe3+ was present in the suspensions.
Department of Applied Chemistry, Faculty of Engineering, Miyazaki University, Japan. yokoi@cc.miyazaki-u.ac.jp
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Hirose
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Hayashi
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Takasaki
D000535:Aluminum / Q000032:analysis; D019149:Bioreactors; D001709:Biotechnology / Q000379:methods; D002412:Cations; D004305:Dose-Response Relationship, Drug; D005427:Flocculation; D007501:Iron / Q000032:analysis; D010368:Pectins / Q000737:chemistry*; D013696:Temperature
D002412:Cations; D010368:Pectins; D000535:Aluminum; D007501:Iron