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A practical approach for solving disposal of rubber waste: leachability of heavy metals from foamed concrete containing rubber powder waste (RPW)

Abdul Kadir, Aeslina and Hassan, Mohd Ikhmal Haqeem and Sarani, Noor Amira and Mohamed Yatim, Fatin Syahirah and Mohd Jaini, Zainorizuan (2017) A practical approach for solving disposal of rubber waste: leachability of heavy metals from foamed concrete containing rubber powder waste (RPW). In: 3rd Electronic And Green Materials International Conference 2017 (EGM 2017), 29–30 April 2017, Krabi, Thailand.

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Abstract

Enormous disposal of rubber wastes has become an issue with the facts that all tires have its own life span. Inefficient disposal method of RPW from used tire can cause environmental impact as the heavy metals content in tire can easily leach out thus causing contamination to the soil and waterways. The goals of this study is to identify the heavy metals content of rubber powder waste (RPW) and to determine the potential of leachability of heavy metals from foamed concrete containing different percentages of RPW. Therefore, this study is focused on the leachability of RPW incorporated in foamed concrete. Different percentages of RPW were incorporated in foamed concrete (0%, 6%, 12% and 18%) for the investigation. Leachability tests were done by using toxicity characteristic leaching procedure (TCLP) on crushed samples of foamed concrete incorporated with RPW and were analyzed by using inductive coupled plasma mass spectrometry (ICP-MS). The results from XRF indicated that RPW is high in metals such as Zn, Cu, Ba and Co. The highest concentration of heavy metals in raw RPW is Zn with 51403 ppm which is exceeded USEPA (2010) maximum contaminant level (MCL) of Zn with only 5 ppm. After RPW had been incorporated into a foamed concrete, the results demonstrated that the Zn, Cu, Ba and Co heavy metals were less leached and complied with USEPA standard. The incorporation of RPW into foamed concrete in this study demonstrated that it could be a potential alternative raw material for concrete thus enhancing the possibility of its reuse in safe and sustainable way.

Item Type: Conference or Workshop Item (Paper)
Subjects: T Technology > TD Environmental technology. Sanitary engineering > TD785-812 Municipal refuse. Solid wastes
Divisions: Faculty of Civil and Environmental Engineering > Department of Water and Environmental Engineering
Depositing User: Mr. Mohammad Shaifulrip Ithnin
Date Deposited: 30 Sep 2019 02:58
Last Modified: 30 Sep 2019 02:58
URI: http://eprints.uthm.edu.my/id/eprint/11632
Statistic Details: View Download Statistic

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