doi: 10.18178/ijesd.2021.12.6.1336
Recycling of Non-metallic Residue from Waste Printed Circuit Boards to Produce Interlocking Concrete Blocks
Thailand (e-mail:sawitri.ppia@gmail.com1
,
Suphaphat Kwonpongsagoon1 , ,
Chakrapan Tuakta3,4
- 1the
- 2National Metal and Materials
- 3Pathum Thani, 12120, Thailand
- 4the Department of Civil Engineering, Faculty
Abstract
The process of copper recovery from wasteprinted circuit board has generated large amounts ofnon-metallic fraction (NMF) residue. In this research, theresidue was recycled as a substitute for fine aggregates at 0%,5%, 10%, 15%, and 20% to produce interlocking concreteblocks. Properties of the interlocking concrete blocks producedin this study, such as density, water absorption, compressivestrength, were firstly examined and the selected mixes werefurther evaluated for the heavy metal leachability. The resultsindicated that the NMF residue affected physical, mechanicaland chemical properties of NMF interlocking concrete blocksamples. When increasing NMF contents, the density andcompressive strength decreased, while the water absorptionincreased. In the leachability results, the leaching of Cudecreased as cement content increased, and its concentrationlevel was well below the Soluble Threshold Limit Concentrationlimit (STLC). Thus, the high content of Cu and all other metalsembedded in the NMF material were immobilized in theinterlocking concrete block specimens.
Keywords
- Interlocking concrete block
- non-metallic fraction residue
- recycling
- waste printed circuit board
How to Cite
Thailand (e-mail:sawitri.ppia@gmail.com, Suphaphat Kwonpongsagoon, Premrudee Kanchanapiya, and Chakrapan Tuakta, "Recycling of Non-metallic Residue from Waste Printed Circuit Boards to Produce Interlocking Concrete Blocks," International Journal of Environmental Science and Development, vol. 12, no. 6, pp. 169-174, 2021. https://doi.org/10.18178/ijesd.2021.12.6.1336
Copyright & License
Copyright © 2021 by the authors. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).