NDLI: Enhancement of As(V) adsorption onto activated sludge by methylation treatment

Content Provider	Springer Nature Link
Author	Kang, So Young Kim, Dong Wook Kim, Kyoung Woong
Copyright Year	2007
Abstract	Biosorption properties of arsenate [As(V)] onto activated sludge were investigated in batch systems. The adsorption of As(V) onto sludge increased from 23 to 266 μg/g dry weight through the methylation of the activated sludge. This increase resulted from neutralization of carboxylic groups via the methylation process. The pH effect of As(V) uptake was also investigated and As(V) adsorption by methylated sludge decreased significantly at high pH (pH > 11) due to competition between As(V) and OH− ions for binding sites distributed on sludge surfaces. In contrast, low pH favored As(V) adsorption by methylated sludge because of the elevated quantities of positively charged functional groups. The results suggest that methylated activated sludge may provide promising applications for the simultaneous removal and separation of As(V) from aqueous effluents.
Starting Page	313
Ending Page	318
Page Count	6
File Format	PDF
ISSN	02694042
Journal	Environmental Geochemistry and Health
Volume Number	29
Issue Number	4
e-ISSN	15732983
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2007-05-16
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Biosorption Arsenic Activated sludge Methylation Esterification FTIR analysis Atmospheric Protection/Air Quality Control/Air Pollution Public Health/Gesundheitswesen Geochemistry Environment
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Medicine Geochemistry and Petrology Environmental Engineering Water Science and Technology

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