Paper Title:
Use of Bauxite Minerals to Control Pollutant Outflow in Urban Areas
  Abstract

Enormous use of ground for various purposes in urban areas has led to disappearance of green-planted surfaces. Considering space constraints, planted roofs become one promising and stabilizing choice to improve amenity and reduce the thermal loads on the building’s shell. However, a critical issue for rooftop garden is the release of pollutants in urban runoff. Not only particles but also dissolved pollutants should be removed from building drainage because of their potential impact on water environment. To add functions for the control of pollutant outflow, bauxsite minerals made of red waste from alumina refineries were incorporated in the rooftop garden as a special soil. The minerals have high trapping capacities for trace metals and other soluble species. Moreover, they are easy to integrate with rooftop garden systems. Based on their equilibrium capacity for removing pollutants, an optimum amount of bauxsite minerals is suggested. The characteristics of rainwater runoff and pollutants release were compared for normal and modified rooftop garden in laboratory scale. As expected, the green roof system with the bauxsite layer reduces the concentration of heavy metals. The technique used in this study is also likely to be implemented in other green surfaces in housing complexes.

  Info
Periodical
Materials Science Forum (Volumes 510-511)
Edited by
Hyung Sun Kim, Yu Bao Li and Soo Wohn Lee
Pages
922-925
DOI
10.4028/www.scientific.net/MSF.510-511.922
Citation
R. H. Kim, J. Jeong, S. H. Lee, C. S. Gee, "Use of Bauxite Minerals to Control Pollutant Outflow in Urban Areas", Materials Science Forum, Vols. 510-511, pp. 922-925, 2006
Online since
March 2006
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Heng Luo, Ning Wang, Xiao Yan Ye, Lu Gao, Jun Chen Li, Tong Jing
Chapter 2: Construction and Structural Engineering, Materials and Technologies
Abstract:Roof greening is a promising solution for improving urban thermal environment and water quality. This paper studies the performance of a...
294
Authors: Marco Carbone, Giuseppina Garofalo, Gennaro Nigro, Patrizia Piro
Chapter 14: Soil and Water Conservation and Desertification Control
Abstract:Green roofs (GRs) may represent a solution for minimizing the impact of urbanization on the hydrological cycle and for sustainably managing...
749
Authors: Chiou Chuan Chen
Chapter 5: Building Materials and Technologies in Construction
Abstract:March to May at noon control area (exposed roof) temperature of 37.56°C, test below (green roofs) surface only 24.69°C, 24.79°C room...
420