[1] Yang Liqiong, Wang Jianlong, Zhang Xiaoran, Che Wu, et al. Adsorption characteristics of Pbfrom urban stormwater runoff by construction wastes [J]. Journal of Southeast University (English Edition), 2014, 30 (2): 212-219. [doi:10.3969/j.issn.1003-7985.2014.02.014]

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Adsorption characteristics of Pbfrom urban stormwater runoff by construction wastes()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

30

Issue:

2014 2

Page:

212-219

Research Field:

Civil Engineering

Publishing date:

2014-06-20

Info

Title:

Adsorption characteristics of Pbfrom urban stormwater runoff by construction wastes

Author(s):

Yang Liqiong¹;  Wang Jianlong¹;  Zhang Xiaoran²;  Che Wu³

¹Key Laboratory of Urban Stormwater System and Water Environment of Ministry of Education, Beijing Universityof Civil Engineering and Architecture, Beijing 100044, China
²Beijing Cooperative Innovation Research Center on Architectural Energy Saving and Emission Reduction, Beijing Universityof Civil Engineering and Architecture, Beijing 100044, China
³Beijing Climate Change Response Research and Education Center, Beijing University of Civil Engineeringand Architecture, Beijing 100044, China

Keywords:

stormwater runoff;  heavy metal;  construction waste;  adsorption

PACS:

TU993.1

DOI:

10.3969/j.issn.1003-7985.2014.02.014

Abstract:

Construction wastes were selected as the adsorbents, and static and dynamic adsorption batch experiments were carried out to investigate the adsorption of Pb to construction wastes with different particle size gradations in the simulated stormwater runoff system. The experimental results show that the pseudo-second-order kinetics model can better characterize the adsorption process of Pb than the pseudo-first-order kinetics model. The adsorption equilibrium data can be well fitted by the Freundlich isotherm model. The construction wastes with different tested size gradations can greatly remove Pb from stormwater runoff and their average removal rate can reach up to 99%. The construction wastes with narrow size distribution can better remove Pb but with worse permeability than those with wide size distribution. The particle size gradation of construction wastes greatly influences the equilibrium time, rate and the capacity of Pb adsorption. The equilibrium adsorption rate and capacity are 18.1 μg/min and 5.5 μg/g, respectively, for the construction wastes with the size of 2.36 to 4.75 mm, which are the greatest among the different size gradations. The present study provides a scientific basis for effectively controlling Pb pollution from stormwater runoff and the construction wastes resource utilization.

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Memo

Memo:

Biographies: Yang Liqiong(1988—), female, graduate; Wang Jianlong(corresponding author), male, doctor, associate professor, wjl_xt@163.com.
Foundation items: The National Natural Science Foundation of China(No.51208022), the National Science and Technology Major Project of China(No.2011ZX07301-004-01).
Citation: Yang Liqiong, Wang Jianlong, Zhang Xiaoran, et al. Adsorption characteristics of Pb from urban stormwater runoff by construction wastes[J].Journal of Southeast University(English Edition), 2014, 30(2):212-219.[doi:10.3969/j.issn.1003-7985.2014.02.014]

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