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Sodium adsorption using activated alumina for application in the dairy industry

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conference contribution
posted on 2005-01-01, 00:00 authored by Dong Wang, L Palmowski, Bas BaskaranBas Baskaran
Basic activated alumina with negatively charged surface is considered as a potential adsorbent for a targeted molecule with positive polarity. Adsorption of sodium by basic activated alumina was investigated as a method for desalting dairy waste streams, in which sodium ion concentration averaged 600 mg/L. Sodium equilibrium and kinetic adsorption were investigated using basic activated alumina with synthetic brines. The results of equilibrium adsorption show that uptake of sodium by activated alumina is significantly higher when the pH is greater than 8 and increases as the pH of the brines increases until pH reaches around 10. The results of kinetic adsorption show that 90 hours were needed to reach equilibrium for sodium adsorption. Binding and diffusion processes are suggested to have taken place within the activated alumina.

History

Location

Singapore

Open access

  • Yes

Start date

2005-07-10

End date

2005-07-15

ISBN-13

9781843395645

ISBN-10

1843395649

Language

eng

Publication classification

E1 Full written paper - refereed

Copyright notice

2005, IWA Publishing

Editor/Contributor(s)

T Paw

Title of proceedings

IWA-ASPIRE 2005 : Wastewater management and environmental protection in Asia, selected proceedings of ASPIRE 2005, the 1st International Water Association - Asia Pacific Group conference & exhibition

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