MOHAMAD RAZIF BIN MOHD RAMLI

EDUCATION

2022-2024: PhD (Wastewater treatment & toxic materials), Universiti Sains Malaysia
2019-2021: M.Sc. (Chemical Engineering), Universiti Sains Malaysia
2014-2018: B.Eng. (Hons) in Chemical Engineering, Universiti Sains Malaysia

RESEARCH, TEACHING, or OTHER INTERESTS

Chemical Engineering, Engineering, Water Science and Technology, Renewable Energy, Sustainability and the Environment

Scopus Publications

Rapid drying for LFP cathodes and graphite anodes: A review of processing, challenges, and techno-economic perspectives
Mohd Hazarel Zairy Mohd Harun, Mohd Asyadi Azam, Mohamad Razif Mohd Ramli
Materials Science in Semiconductor Processing, 2026
Desalination brine as a resource: Emerging opportunities in valuable minerals recovery via membrane distillation
Mohamad Razif Mohd Ramli, Mohd Sobri Takriff, Abdul Wahab Mohammad
Journal of Water Process Engineering, 2026
Advancements in integrating activated carbon with membrane bioreactors for enhanced removal of emerging contaminants
Mohamad Razif Mohd Ramli, Abdul Wahab Mohammad, Mohd Sobri Takriff, Adewale Giwa
Chemical Engineering and Processing Process Intensification, 2026
Acetaminophen removal using porous activated carbon derived from corn cob: optimization and mass transfer modelling
Mohamad Razif Mohd Ramli, Noor Fazliani Shoparwe, Mohd Azmier Ahmad, Mohamad Firdaus Mohamad Yusop
Journal of Chemical Technology and Biotechnology, 2024
BACKGROUNDAcetaminophen, also known as paracetamol, has been notably detected in aquatic environments, including wastewater, surface water and drinking water, causing significant concern within the scientific and environmental research communities. This study focuses on two main objectives: (i) optimizing corn cob‐based activated carbon (CCAC) through response surface methodology for the adsorption of acetaminophen and (ii) simulating the acetaminophen adsorption process using the polymath mass transfer (PMT) model.RESULTSThe optimized CCAC was prepared via physiochemical activation under microwave radiation (265 W power) for 6 min, with a KOH impregnation ratio of 0.50 g g−1. This process resulted in a high Brunauer–Emmett–Teller surface area of 976.29 m2 g−1, accompanied by a corresponding pore volume of 0.39 cm3 g−1 and a pore diameter of 2.38 nm. The adsorption study, employing differential initial concentrations (ranging from 5 to 30 mg L−1) of acetaminophen, revealed a substantial adsorption capacity of 22.43 mg g−1 (74.77%) at 30 °C and 20.74 mg g−1 (69.13%) at pH 6. The PMT model indicated an adsorption capacity (Qm) of 21.14 mg g−1, with an error of 5.75%, demonstrating high precision compared to the experimental result. Additionally, the calculated R2 values equal to or above 0.90 indicated strong agreement between the PMT model and experimental data.CONCLUSIONThus, applying the PMT model proved to be economical and cost‐effective, providing accurate predictions on surface area during adsorption performance compared to the time‐consuming and costly process of conducting characterizations. © 2024 Society of Chemical Industry (SCI).
Adsorption of Acetaminophen onto activated carbon derived from corn cobs: Optimizations by using response surface methodology
M.R.M. Ramli, N.F. Shoparwe, M.A. Ahmad
Journal of Physics Conference Series, 2024
Acetaminophen (ACN) is widely used for analgesic with antipyretic and analgesics applications. The presence of ACN in the aquatic environment contributes towards the degradation of the aromatic ring of carbon, which harms human health and the ecosystem. This research aims to optimize the preparation condition of corn cob based activated carbon (CCAC) for adsorption of acetaminophen (ACN) by employing response surface methodology (RSM). The faced centered central composite design (CCD) was used to study the correlation between CCAC preparation conditions and ACN removal, and CCAC’s yield. The preparation conditions of CCAC are radiation power (X1), activation time (X2) and impregnation ratio, IR (X3). The optimal preparation conditions for CCAC were 264 W, 2 minutes, and 2.5 g/g for X1, X2, and X3, respectively.
Methylene Blue Removal Using Activated Carbon Adsorbent from Jengkol Peel: Kinetic and Mass Transfer Studies
Mohamad Razif Mohd Ramli, Noor Fazliani Shoparwe, Mohd Azmier Ahmad
Arabian Journal for Science and Engineering, 2023
Non-solvent Flux Augmentation of an LDPE-Coated Polytetrafluoroethylene Hollow Fiber Membrane for Direct Contact Membrane Distillation
Mohamad Razif Mohd Ramli, Abdul Latif Ahmad, Ebenezer Idowu Oluwasola, Choe Peng Leo
ACS Omega, 2021
Membrane distillation (MD) is a thermal technology for the desalination process that requires a hydrophobic microporous membrane to ensure that the membrane can maintain the liquid–vapor interface. This work aims to enhance the water permeation flux of the previously coated membrane by modifying the surface of the polytetrafluoroethylene hollow fiber (PTFE HF) membrane with a selected non-solvent such as acetone, cyclohexanone, and ethanol in low-density polyethylene as a polymeric coating solution. However, the modification using acetone and cyclohexanone solvents was unsuccessful because a reduction in membrane hydrophobicity was observed. The modified PTFE HF membrane with ethanol content exhibits high wetting resistance with a high water contact angle, which can withstand pore wetting during the direct contact MD process. Since MD operates under a lower operating temperature range (50–90 °C) compared to the conventional distillation, we herein demonstrated that higher flux could be obtained at 7.26 L m–2 h–1. Thus, the process is economically feasible because of lower energy consumption. Performance evaluation of the modified PTFE HF membrane showed a high rejection of 99.69% for sodium chloride (NaCl), indicating that the coated membrane preferentially allowed only water vapor to pass through.
Advanced Application and Fouling Control in Hollow Fibre Direct Contact Membrane Distillation (HF-DCMD)
Mohamad Razif Mohd Ramli, Nurul Hafifah Mat Radzi, Mohamad Izrin Mohamad Esham, Mohammed Karama Alsebaeai, Abdul Latif Ahmad
Arabian Journal for Science and Engineering, 2021
Surface Modification of Polytetrafluoroethylene Hollow Fiber Membrane for Direct Contact Membrane Distillation through Low-Density Polyethylene Solution Coating
Mohamad Razif Mohd Ramli, Abdul Latif Ahmad, Choe Peng Leo
ACS Omega, 2021
Membrane distillation (MD) is an attractive technology for the separation of highly saline water used with a polytetrafluoroethylene (PTFE) hollow fiber (HF) membrane. A hydrophobic coating of low-density polyethylene (LDPE) coats the outer surface of the PTFE membrane to resolve membrane wetting as well as increase membrane permeability flux and salt rejection, a critical problem regarding the MD process. LDPE concentrations in coating solution have been studied and optimized. Consequently, the LDPE layer altered membrane morphology by forming a fine nanostructure on the membrane surface that created a hydrophobic layer, a high roughness of membrane, and a uniform LDPE network. The membrane coated with different concentrations of LDPE exhibited high water contact angles of 135.14 ± 0.24 and 138.08 ± 0.01° for membranes M-3 and M-4, respectively, compared to the pristine membrane. In addition, the liquid entry pressure values of LDPE-incorporated PTFE HF membranes (M-1 to M-5) were higher than that of the uncoated membrane (M-0) with a small decrease in the percentage of porosity. The M-3 and M-4 membranes demonstrated higher flux values of 4.12 and 3.3 L m–2 h–1 at 70 °C, respectively. On the other hand, the water permeation flux of 1.95 L m–2 h–1 for M-5 further decreased when LDPE concentration is increased.
Effect of additives on hydrophobicity of PVDF membrane in two-stage coagulation baths for desalination
, Abdul Latif Ahmad, Mohamad Razif Mohd Ramli, , Mohamad Izrin Mohamad Esham, and
Journal of Physical Science, 2019
This research aimed to improve the hydrophobic polyvinylidene fluoride (PVDF) membrane for direct contact membrane distillation (DCMD) desalination by mixing various additives (dibutyl phthalate and glycerol) in polymer solution via twostage/dual coagulation bath (CB) system. The effect of each additive on the surface and cross-sectional morphology of PVDF membrane was investigated. The addition of additives showed increased in membranes porosity, but the water contact angle was less than 90° when immersed in single CB (distilled water). Membrane prepared with two-stage CB system immersed into methanol CB for 20 min and transferred into distilled water CB for 24 h exhibited high water contact angle of 114.2°, 142.6° and 120.1° for membrane M-3, M-4 and M-5, respectively. The porosity of membrane significantly increased when incorporated with additives. The membrane was further evaluated in DCMD operation for separation performance. The DCMD tested using distilled water and 35 g l–1 of sodium chloride (NaCl) aqueous solution in feed showed M-4 achieved the highest flux among other membranes at 13.85 kg–2 m–2 h–1 with 99% salt rejection under 70°C of feed temperature.