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AuthorMaryam, Al-Ejji
AuthorHassan, Mohammad K.
AuthorYoussef, Khaled
AuthorElmakaty, Farah
AuthorMehanna, Hanin
AuthorSliem, Mostafa
AuthorIrshidat, Mohammad
Available date2024-04-17T07:11:00Z
Publication Date2023-09-30
Publication NameJournal of Environmental Management
Identifierhttp://dx.doi.org/10.1016/j.jenvman.2023.119105
CitationAl-Ejji, M., Hassan, M. K., Youssef, K., Elmakaty, F., Mehanna, H., Sliem, M., & Irshidat, M. (2023). Novel surface-treatment for bottom ash from municipal solid waste incineration to reduce the heavy metals leachability for a sustainable environment. Journal of Environmental Management, 347, 119105.
ISSN0301-4797
URIhttps://www.sciencedirect.com/science/article/pii/S0301479723018935
URIhttp://hdl.handle.net/10576/53926
AbstractUnconventional treatments can provide a modification to convert ash waste into valuable materials that can be used in various applications. This study focuses on bottom ash (BA) collected from a local incineration plant and characterizes its chemical composition before and after pretreatment by coating with polymers. The toxicity-characteristic leaching procedure (TCLP) was used to identify selected heavy metal leaching after treatment with vinyl-terminated polydimethylsiloxane (PDMS) of different molecular weights. BA coatings were incorporated in two ratios, 0.5% and 1%, by milling to avoid heavy metal leaching. The results showed that all the coating batches had reduced concentrations of copper (Cu), manganese (Mn), and zinc (Zn), whereas the concentrations of chromium (Cr) and cadmium (Cd) showed higher amounts of BAV34 (0.5%) and BAV25 (1%). The treated BA with GP demonstrated percentages of reduction of 70%, 65%, 80%, 75%, 90%, and 80% for Cu, Mn, Ni, Zn, Pb, and Cd, respectively. The milling procedure reduced the particle size of the coated ash. Hydrophobicity was observed in all coating batches compared to untreated BA. The thermogravimetric analysis (TGA) results showed variations between BA and treated BA, which confirmed that PDMS caused surface modification. These features have potential significance for extending the use of coated ash as a sustainable material for construction applications.
SponsorThis work was partially supported by Qatar University International collaboration grant #: IRCC-2022-563.
Languageen
PublisherElsevier
SubjectBottom ash
Coating
Heavy metals leachability
Milling
Sustainable
TitleNovel surface-treatment for bottom ash from municipal solid waste incineration to reduce the heavy metals leachability for a sustainable environment
TypeArticle
Volume Number347
ESSN1095-8630
dc.accessType Full Text


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