Variation of the fraction transformations and mobility of Cu and Zn in municipal sludge with pH

Author

Wang, Yuexiang ; Chen, Maolin

Author_Institution

Sch. of Transp., Southeast Univ., Nanjing, China

fYear

2011

fDate

15-17 July 2011

Firstpage

3741

Lastpage

3744

Abstract

Based on the laboratory experiment, the variation of the fraction transformations and mobility of Cu and Zn in municipal sludge with pH were discussed in this study. The results show that pH has an important influence on the fraction transformations and mobility of Cu and Zn. The oxidizable fraction and residual fraction are the main ones of Cu in sludge solutions, While the percentage of acid soluble/exchangeable fraction and reducible fraction are not negligible to the fractions of Zn in sludge solutions. According to the fractions of Cu and Zn, the stability of Cu is high and the bioavailability is poor, but the mobility and bioavailability of Zn are all high. It is concluded that with pH level increased the mobility and bioavailability of Cu and Zn have dropped according to the experiment result that the fractions of Cu and Zn have been transferred to oxidizable fraction and residual fraction.

Keywords

copper; oxidation; pH; sludge treatment; waste disposal; zinc; Cu; Zn; acid soluble-exchangeable fraction; bioavailability; fraction transformation; mobility; municipal sludge; oxidizable fraction; pH level; reducible fraction; residual fraction; sludge solution; Cadmium; Copper; Leaching; Soil; Water pollution; Zinc; fraction transformation; heavy metals; mobility; municipal sludge;

fLanguage

English

Publisher

ieee

Conference_Titel

Mechanic Automation and Control Engineering (MACE), 2011 Second International Conference on

Conference_Location

Hohhot

Print_ISBN

978-1-4244-9436-1

Type

conf

DOI

10.1109/MACE.2011.5987809

Filename

5987809