Journal Articles

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https://hdl.handle.net/20.500.14170/294

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Browsing Journal Articles by Author "Aeslina Abdul Kadir"
  • Publication
    Mechanical properties and toxicity characteristic of petroleum sludge incorporated with palm oil fuel ash and quarry dust in Solidification/Stabilization Matrices
    ( 2022)
    Mohd Ikhmal Haqeem Hassan
    ;
    Aeslina Abdul Kadir
    ;
    Nor Amani Filzah Mohd Kamil
    ;
    Nurul Nabila Huda Hashar
    ;
    Noor Amira Sarani
    ;
    Badaruddin Ibrahim
    ;
    Kahirol Mohd Salleh
    ;
    Mohd. Mustafa Al Bakri Abdullah
    This paper discussed the treatment of Malaysian petroleum sludge by incorporating palm oil fuel ash (POFA) to replace Portland cement and quarry dust (QD) replaces sand in the solidification /stabilization (S/S) method. Preliminary studies, including chemical composition, heavy metal characterization, density test, compressive strength test, and toxicity characteristic leaching procedure (TCLP), were done to evaluate POFA and QD suitability in S/S matrices. The 10% replacement of POFA recorded a considerable density value ranging from 1500 kg/m3 to 1660 kg/m3 . As for S/S matrices containing petroleum sludge, the results indicate the possibility to of encapsulating the sludge in the matrices up to 10%. The highest strength of S/S matrices with petroleum is from PS5% samples with 15.61 MPa at 28 days. The toxicity characteristic of heavy metals from the S/S matrices was below the permissible limit set by USEPA. This investigation could be an alternative solution for petroleum sludge, POFA, and QD disposal and has excellent potential for replacing other treatment approaches employed at the advanced treatment stage for petroleum refinery effluents.
  • Publication
    Recycling of PET bottles into different types of building materials: A review
    ( 2021)
    Mohd Ikhmal Haqeem Hassan
    ;
    Aeslina Abdul Kadir
    ;
    Intan Seri Izzora Arzlan
    ;
    Mohd Razali Md Tomari
    ;
    Noor Azizi Mardi
    ;
    Mohd Fahrul Hassan
    ;
    Mohd. Mustafa Al Bakri Abdullah
    ;
    M. Nabiałek
    ;
    B. Jeż
    In this globalized era, building materials play an essential role in the civil engineering field. Nowadays, with the increase in population, the demand for construction activities is also increasing. Polyethylene (PET) bottles are among the most widely used materials and cause an abundance of non-degradable waste, at about 0.94 million tonnes in Malaysia. One of the alternatives to reduce this waste's environmental impact is to incorporate it inside building materials such as brick and concrete. As PET bottles' recycling is highly promoted, the physical and mechanical properties of building materials made from PET bottles have also been reviewed. The data analysis shows that the compressive strength, flexural strength, split tensile strength and density of building materials decreases as the percentage of PET waste increases. However, other properties such as water absorption, initial absorption rate, and firing shrinkage increase proportionally with the PET waste. Besides, heavy metals in these building materials comply with the United States Environmental Protection Agency (USEPA) standards. It can be concluded that the percentage of PET waste incorporated into brick and concrete must be less than 5% and 2%, respectively, to produce suitable materials to provide alternatives in reducing and recycling PET waste.