Sustainable utilization of municipal solid waste i incineration fly ash for ceramic bricks with eco-friendly biosafety

Deng, Yi and Gong, B. and Chao, Y. and Dong, T. and Yang, W. and Hong, Min and Shi, X. and Wang, G. and Jin, Y. and Chen, Z.-G. (2018) Sustainable utilization of municipal solid waste i incineration fly ash for ceramic bricks with eco-friendly biosafety. Materials Today Sustainability, 1-2. pp. 32-38. ISSN 2589-2347

Abstract

Municipal solid waste (MSW) has become a global environmental issue due to the rapid development of economy, industrialization, and urbanization. Re-utilization of municipal solid waste incineration (MSWI) fly ash is a sustainable solution to address the environmental pollution of MSW. Here, we rationally develop a strategy to fabricate ceramic bricks with MSWI fly ash serving as the primary additive. Water absorption, shrinkage, and bending strength of the fly ash–derived ceramics meet the Chinese criterion of second-class ceramic tiles (GB16889-2008). Leaching toxicity tests demonstrate that leaching concentrations of heavy metals from ceramics are much lower than their limits of GB16889-2008, indicating a low potential hazard to surroundings. The biotoxicity of the fly ash–derived ceramics is evaluated through bioassays involving bacteria (Escherichia coli and Staphylococcus aureus) and mammalian cells (MG63). The results show that the fly ash–derived ceramics have favorable biosecurity, indicating that MSWI fly ash can be potentially utilized as raw materials to produce eco-friendly ceramics. Besides, this work provides a novel methodology to investigate the biosafety of recycled materials through the joint use of microorganisms and cells.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Published version cannot be displayed due to copyright restrictions.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - No Department
Date Deposited: 20 Feb 2019 05:30
Last Modified: 06 Mar 2019 05:41
Uncontrolled Keywords: municipal solid waste; fly ash; ceramic brick; leaching concentration; biosecurity
Fields of Research : 03 Chemical Sciences > 0302 Inorganic Chemistry > 030206 Solid State Chemistry
10 Technology > 1007 Nanotechnology > 100708 Nanomaterials
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970103 Expanding Knowledge in the Chemical Sciences
Identification Number or DOI: 10.1016/j.mtsust.2018.11.002
URI: http://eprints.usq.edu.au/id/eprint/35489

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