Mohd Zulham Affandi Mohd Zahid
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Preferred name
Mohd Zulham Affandi Mohd Zahid
Official Name
Mohd Zulham Affandi , Mohd Zahid
Alternative Name
Zahid, Mohd Zulham Affandi bin Mohd
Zahid, M. Z.A.Mohd
Zahid, Mohd Zulham Affandi Mohd
Zahid, M. Z.A.M.
Mohd Zahid, M. Z.A.
Main Affiliation
Scopus Author ID
55540220800
Researcher ID
AAC-7605-2020

Research Output
Now showing 1 - 2 of 2
  • Publication
    Statistical optimization of adsorption process for removal of Methylene blue using Durio Zibethinus Murr shell
    (AIP Publishing Ltd., 2023)
    Muhamad Faizal Pakir Mohamed Latiff
    ;
    Nur Salsabilah Ruzami
    ;
    Mohamad Anuar Kamaruddin
    ;
    Nasehir Khan E. M. Yahaya
    ;
    Mohd Zulham Affandi Mohd Zahid
    Adsorption of methylene blue (MB) was investigated using physically prepared Durio Zibethinus Murr shell activated carbon (DZMAC). Response surface methodology (RSM) statistical technique was used to optimise the preparation conditions: activation power, activation time, and CO2 flow, with the percentage of MB dye removal and DZMAC yield as the targeted responses. Based on the central composite design (CCD), two empirical models were developed and validated by applying ANOVA analysis incorporating interaction effects of three variables using RSM to the two responses. The optimum conditions for preparing DZMAC for adsorption of MB dye were found as follows: activation power of 666-Watt, activation time of 2.83 minutes, and CO2 flow of 100 cm3, which resulted in 70% of MB dye removal and 25.21% of DZMAC yield. Experimental results obtained agreed satisfactorily well with the model predictions.
  • Publication
    Improving sustainability of road construction by partial replacement of natural aggregates in subbase layer with crushed brick and reclaimed asphalt pavement
    (IOP Publishing, 2023)
    Sk Muiz Sk Abdul Razak
    ;
    Norhaizura Yahya
    ;
    Mohd Zulham Affandi Mohd Zahid
    ;
    Ainis Khairunnisa Bulkini
    ;
    Mohd Irwan Adiyanto
    ;
    Noor Sheena Herayani Harith
    ;
    Ahmad Nurfaidhi Rizalman
    ;
    Mazizah Ezdiani Mohamad
    Reducing dependent on naturally sourced materials is among the priority in improving the sustainability of road construction. The subbase layer which provides strength and stability across the road profile, comprised mainly of natural aggregates. This study aims to explore the feasibility of partial replacement of natural aggregates in subbase layer with 20% Crushed Brick (CB) and 20 to 50% Reclaimed Asphalt Pavement (RAP). California Bearing Ratio (CBR) test and Constant Head Permeability tests were carried out to determine the effect of this partial replacement on the geotechnical properties of the subbase layer. The results obtained denotes that the combination of 20% CB and 50% RAP is the optimum partial replacement of natural aggregates in subbase layer with CB and RAP. The use of CB further complements RAP in improving the stiffness and compressibility of the subbase layer while contributing significantly toward sustainability in road construction.