DocumentCode :
2683673
Title :
Adsorption Removal of Copper, Zinc and Cadmium in Aqueous Solutions and Road Runoff by Carbonized Mulch: Heavy Metal Removal by Carbonized Mulch
Author :
Zuo Xiao-Jun ; Fu Da-Fang ; Li He
Author_Institution :
Dept. of Municipal Eng., Southeast Univ., Nanjing, China
fYear :
2012
fDate :
28-30 May 2012
Firstpage :
1180
Lastpage :
1185
Abstract :
Carbonized mulch (CM) was used to remove copper (Cu), zinc (Zn) and cadmium (Cd) in solutions and urban road runoff in this study. Parameters investigated included pH, sorbent amount and reaction time. The removal of all three metals by CM was determined by pH and the peak at pH 5.5. The adsorption kinetics of all three metals by CM could meet the pseudo-first-order equation. The adsorption isotherms of all three metals by CM could be greatly described by Langmuir equation, as well as by Freundlich equation. The peak uptakes were 30.8 mg Cu/g CM, 69.9 mg Zn/g CM and 27.5 mg Cd/g CM. Obtained results indicate that CM could be used to deal with heavy metals in road runoff, although there are the influences of real runoff qualities (including light metal cations, anions e.g.).
Keywords :
adsorption; cadmium; copper; hydrology; negative ions; positive ions; water treatment; zinc; Cd; Cu; Freundlich equation; Langmuir equation; Zn; adsorption isotherm; adsorption kinetics; adsorption removal; anions; aqueous solution; cadmium removal; carbonized mulch; copper removal; heavy metal removal; light metal cations; pH; pseudo-first-order equation; reaction time; sorbent amount; urban road runoff; zinc removal; Equations; Ions; Kinetic theory; Mathematical model; Roads; Zinc; adsorption; carbonization; metals; mulch; road runoff;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Biomedical Engineering and Biotechnology (iCBEB), 2012 International Conference on
Conference_Location :
Macau, Macao
Print_ISBN :
978-1-4577-1987-5
Type :
conf
DOI :
10.1109/iCBEB.2012.49
Filename :
6245340
Link To Document :
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