Azduwin Khasri
Thumbnail Image
Preferred name
Azduwin Khasri
Official Name
Azduwin, Khasri
Alternative Name
Khasri, Azduwin
Azduwin, Y. K.
Main Affiliation
Scopus Author ID
55993350600
Researcher ID
K-8421-2019

Research Output

Filters

1
8
Reset filters

Settings
Now showing 1 - 8 of 8
  • Publication
    Adsorption of basic green 4 onto gasified Glyricidia sepium woodchip based activated carbon: optimization, characterization, batch and column study
    (Scientific Scholar, 2020)
    Anis Atikah Ahmad
    ;
    Azam Taufik Mohd Din
    ;
    Nasehir Khan EM Yahaya
    ;
    Azduwin Khasri
    ;
    Mohd Azmier Ahmad
    The abundance of gasification char residues which contributed to solid waste management problem is one of the major concerns in biomass gasification industry. This study focuses on synthesizing gasified Glyricidia sepium woodchip based activated carbon (GGSWAC) for the removal of basic green 4 (BG4) dye, evaluating the GGSWAC physicochemical properties and assessing the BG4 adsorption performance in batch and fixed-bed column systems. The optimal conditions of GGSWAC synthesis were at radiation power, time, and impregnation ratio (IR) of 616 W, 1 min and 1.93 g/g, respectively. The surface area (SBET) and total pore volume (TPV) of GGSWAC were 633.30 m2/g and 0.34 cm3/g, respectively. The Fritz–Schlünder best fitted to the experimental data at all temperatures in the isothermal studies, indicating a monolayer adsorption. The kinetic study showed that BG4 adsorption followed Avrami kinetic model. Based on thermodynamic parameters, the adsorption of BG4 dye onto GGSWAC was an endothermic and spontaneous process. In continuous operation, the Thomas and Yoon–Nelson models successfully predicted BG4 adsorption onto GGSWAC. The low production cost of 0.54 USD/kg showed that GGSWAC is economically feasible for commercialization.
  • Publication
    Valorization of face mask waste as an adsorbent for cationic dye adsorption
    (Desalination Publications, 2023)
    Goy Khai Sze
    ;
    Anis Atikah Ahmad
    ;
    Azduwin Khasri
    The increasing environmental pollution caused by the disposal of untreated dye-containing effluent and face mask wastes in landfills has become a significant concern. To address this issue, this work focuses on the utilization of face mask wastes as alternative adsorbents for the adsorption of malachite green (MG) dye. These adsorbents offer advantages such as ease of operation, cost-effectiveness, high efficiency, and ready availability. In this study, the raw face mask wastes (RFM) undergo a thermal treatment process in a furnace at 800°C for 21 h before conducting the adsorption tests. The Fourier-transform infrared spectroscopy analysis revealed the presence of various functional groups, including alkane, alkene, alcohol, and carbonyl, in both the treated face mask adsorbent (TFMA) and RFM. The scanning electron microscopy with energy-dispersive X-ray spectroscopy analysis displayed the surface morphologies of RFM as a porous and homogeneous carbon sorbent structure, while TFMA exhibited a heterogeneous and flaky structure. Energy-dispersive X-ray spectroscopy analysis indicated that RFM primarily consisted of carbon elements, followed by oxygen and calcium elements, whereas TFMA predominantly comprised calcium and oxygen elements with a limited amount of carbon. The adsorption experiments, considering various parameters such as initial dye concentration (1,000–1,200 mg/L) and contact time (5–1,500 min), demonstrated that increasing the contact time and initial concentration led to an enhanced adsorption capacity. The maximum adsorption capacity of 2,127 mg/g confirmed the effectiveness of TFMA as an adsorbent for MG. Thermodynamic analysis revealed that the adsorption process was spontaneous and endothermic. The isotherm and kinetic studies showed a good fit between the adsorption data and the Brunauer–Emmett–Teller and pseudo-second-order models as evidenced by high R2 values and low error function values, suggesting a heterogenous adsorption of MG on TFMA.
  • Publication
    Process optimization of microwave assisted KOH-activated carbon derived from sugarcane bagasse using central composite design
    (AIP Publishing, 2023)
    Nor Azmiera Mat Rasul
    ;
    Azduwin Khasri
    ;
    Mohd Azmier Ahmad
    In this work, the process optimization for the synthesis of activated carbon (AC) derived from sugarcane bagasse via microwave assisted potassium hydroxide (KOH) activation for methylene blue (MB) dye adsorption was employed using Central Composite Design. Characterization of AC using Brunauer Emmett and Teller (BET) revealed specific surface area of 307.2 m2/g. Three variables namely power, time and char/KOH ratio were chosen for the process optimization and MB removal percentage as the investigated response. The optimum preparation conditions were found occurred at power of 200 W, time of 2 min and char/KOH ratio of 0.5, resulting in the removal of 94.30% MB. The sugarcane bagasse-based AC produced shows the great potential to be utilized as a raw material for the production of AC with good adsorption properties.
      1  1
  • Publication
    Effect of elevated temperature on the tensile strength of Napier/glass-epoxy hybrid reinforced composites
    ( 2017-11-07)
    Mohd Ridzuan Mohd Jamir
    ;
    Mohd Shukry Abdul Majid
    ;
    Mohd Afendi Rojan
    ;
    Ahmad Firdaus Ahmad Zaidi
    ;
    Azduwin Khasri
    The effects of elevated temperature on the tensile strength of Napier/glass-epoxy hybrid reinforced composites and its morphology of fractured surfaces are discussed. Napier/glass-epoxy hybrid reinforced composites were fabricated by using vacuum infusion method by arranging Napier fibres in between sheets of woven glass fibres. Napier and glass fibres were laminated with estimated volume ratios were 24 and 6 vol. %, respectively. The epoxy resin was used as matrix estimated to 70 vol. %. Specimens were tested to failure under tension at a cross-head speed of 1 mm/min using Universal Testing Machine (Instron) with a load cell 100 kN at four different temperatures of RT, 40°C, 60°C and 80°C. The morphology of fractured surface of hybrid composites was investigated by field emission scanning electron microscopy. The result shows reduction in tensile strength at elevated temperatures. The increase in the temperature activates the process of diffusion, and generates critical stresses which cause the damage at first-ply or at the centre of the hybrid plate, as a result lower the tensile strength. The observation of FESEM images indicates that the fracture mode is of evolution of localized damage, from fibre/matrix debonding, matric cracking, delamination and fibre breakage.
      1  14
  • Publication
    Effect of surface roughness of pure aluminium A1100 on the cold work extrusion by using different angles of taper die
    ( 2014)
    Mohd Ridzuan Mohd Jamir
    ;
    Mohd Hafis Sulaiman
    ;
    Azduwin Khasri
    ;
    Alina Rahayu Mohamed
    ;
    N. Fitriah Suhaimi
    ;
    Mohd Shahril Shariff
    The study presented in this paper is focused on the effect of surfaces roughness of pure aluminium A1100 on the cold work extrusion process by three different angles of taper die. Different angles of taper die will affect the surface roughness of the workpiece. To protect the surface and to reduce friction, lubricants are often used in extrusion process [1]. Different lubricants may have different optimum taper die angle that are suitable to be applied. Two types of materials used in this experiment are steel SKD 11 for taper die and aluminium A1100 for workpiece and different angles applied are 30°, 45°, and 60°. Moreover, with respect to each angle, three different types of lubricants were used which are Daphne Draw S Series, Palm Olein, and EFB bio oil. The Universal Testing Machine and Surface Roughness Tester were used in this experiment. The result obtained from the experiment shows that at 30° of taper die angle were producing the smooth product surfaces for each lubricant and Daphne Draw S Series could reduce the surface roughness compared to other lubricant test.
      1  11
  • Publication
    Effect of pineapple leaf (PALF), napier, and hemp fibres as filler on the scratch resistance of epoxy composites
    ( 2019)
    Mohd Ridzuan Mohd Jamir
    ;
    Mohd Shukry Abdul Majid
    ;
    Azduwin Khasri
    ;
    E.H.D. Gan
    ;
    Zuradzman Mohamad Razlan
    ;
    S. Syahrullail
    This article presents the effects of pineapple leaf (PALF), napier, and hemp fibres as filler on the scratch resistance of epoxy composites. In particular, it explores the effect of these natural fillers on the horizontal load, coefficient of friction (COF), penetration depth, fracture toughness, scratch hardness, brittleness index and scratch observation. The mixing method using magnetic stirrer was used to produce the natural fibre-filled epoxy composites with different wt%, namely, 5, 7.5, and 10 wt%. The test was performed using a CSM Revetest Xpress, which consisted of a cone of the half-apex angle of 60° ending with a sphere having a tip radius of 200 μm. The indenter scratch distance and speed were 7 mm and 1.5 mm/min, respectively. The results show that the napier fibre-filled epoxy composites have the highest peak load and COF. It was also noted that the napier fibre-filled epoxy composites have the lowest penetration depth for each wt% of filler. Lastly, the fracture toughness (Kc) for the napier fibre-filled epoxy composites with 10 wt% of filler yielded the highest value of 4.33 MPa.m1/2. It can also be seen that using a scanning electron microscope (SEM), the amount of debris increased with higher of wt% of the natural fibre fillers in the composites. Hence it was demonstrated that the napier fibre-filled epoxy composites have higher scratch resistance compared to the PALF and hemp fibre-filled epoxy composites. Keywords: Surface analysis, Fracture toughness, Scratch resistance, PALF, Napier, Hemp fibres.
      2  7