Naimah Ibrahim
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Preferred name
Naimah Ibrahim
Official Name
Ibrahim, Naimah
Alternative Name
Ibrahim, Naimah
Ibrahim, N.
Naimah, I.
Main Affiliation
Scopus Author ID
23767004300
Researcher ID
AAA-9532-2021

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  • Publication
    Biochar: A review of its history, characteristics, factors that influence its yield, methods of production, application in wastewater treatment and recent development
    ( 2022-12-15)
    Nur Salsabila Kamarudin
    ;
    Farrah Aini Dahalan
    ;
    Masitah Hasan
    ;
    Ong Soon An
    ;
    Nor Azizah Parmin
    ;
    Naimah Ibrahim
    ;
    Hamdzah M.
    ;
    Zain N.A.M.
    ;
    Muda K.
    ;
    Wikurendra E.A.
    Biochar can alleviate several issues, and it should also be inexpensive to produce. Most biochars have a high pore structure and diverse functional groups that assist in the adsorption process. Due to the attributed properties of biochar, several studies have demonstrated that biochar is getting more attention for its efficiency in facilitating wastewater treatment. However, to ensure the feasibility of biochar in wastewater treatment, the factors involved in the preparation of biochar that influences its characteristics and adsorption capacity must be understood. This study reviews the history, characteristics, factors that influence its yield, production methods, application, and recent development of biochar in wastewater treatment.
      1
  • Publication
    A comprehensive review on the advancements in catalyst regeneration strategies for enhanced reactivity in CO methanation
    ( 2023-10-01)
    Hatta A.H.
    ;
    Jalil A.A.
    ;
    Hassan N.S.
    ;
    Hamid M.Y.S.
    ;
    Bahari M.B.
    ;
    Aziz M.A.
    ;
    Alhassan M.
    ;
    Naimah Ibrahim
    ;
    Jusoh N.W.C.
    ;
    Hairom N.H.H.
    Rising energy demand worldwide has led to increased interest in renewable energy, but natural gas remains a significant indigenous energy source due to its wide use, lower carbon impact, and established infrastructure. In the creation of substituted natural gas through CO methanation, a catalyst is essential. However, maintaining the catalyst's stability requires understanding its deactivation and regeneration. Therefore, it is vital to understand the catalyst's deactivation and regeneration phenomenon for the CO methanation reaction which is the requirement for the catalyst's stability. A small number of review reports have been published on CO methanation, however, despite substantial investigation, none of them fully explain the catalyst's deactivation and regeneration. In light of these considerations, we have provided recent thorough research on the catalyst's deactivation and regeneration for CO methanation reaction. The fundamentals, kinetics, and effects of operating parameters involving temperature, pressure, and feed ratio were systematically deliberated. The major contribution of this study, which is catalyst deactivation, including carbon and coke formation, thermal degradation, metal sintering, and poisoning, as well as their regeneration method have then conversed. Lastly, a critical standpoint on the forthcoming difficulties and opportunities in CO methanation, especially in the catalyst's deactivation and regeneration field was conferred in detail.
      1
  • Publication
    Performance of Waste Cooking Oil Esterification for Biodiesel Production Using Various Catalysts
    ( 2024-03-01)
    Herman I.T.
    ;
    Khairuddin Md Isa
    ;
    Naimah Ibrahim
    ;
    Saiful Azhar Saad
    ;
    Abdullah T.A.T.
    ;
    Aziz M.A.A.
    ;
    Hairunnaja M.A.
    In this study, waste cooking oil (WCO) with high free fatty acid (FFA) content was esterified to produce biodiesel, and the catalysts’ performance was investigated. Two deep eutectic solvents (DESs) were employed as the liquid catalysts (K2CO3-Gly and KOH-Gly), while the solid heterogeneous catalysts used were spent bleaching earth (SBE), KCC-1, and Na/KCC-1. DESs were prepared by mixing at reaction temperature and time of 80°C and 120 min, respectively. The American Standard Testing Method (ASTM) D974 determined the acid value. The catalysts were first screened for their catalytic activity in WCO esterification. The parameters investigated in this study were oil-to-methanol molar ratio, catalyst loading, reaction time, and temperature. The highest conversion (94.7%) was obtained using Na/KCC-1. The performance of solid and liquid catalysts was evaluated using KOH-Gly and SBE for the reduction of FFA in WCO under different conditions of oil-to-methanol molar ratio (1:6–1:10), catalysts loading (0.2–2.0 g), reaction time (30–60 min), and temperature (40–100°C). The highest reduction of FFA in the esterification process for KOH-Gly and SBE as catalysts was 97.74% and 84.2%, respectively. Transesterification of the esterified oil shows a promising result (97%), and the process can potentially be scaled up. The GC-MS result shows that the produced oil has the highest percentage of hexadecanoic acid and methyl ester.
      1