Journal Articles

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https://hdl.handle.net/20.500.14170/9527

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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
    Performance optimization of sulfur dioxide (So2) desulfurization by oil palm-based activated carbon using box-behnken design
    ( 2022-12-15)
    Sooriyan S. Kathiroly
    ;
    Naimah Ibrahim
    ;
    Muhammad Adli Hanif
    ;
    Masitah Hasan
    ;
    Abdullah S.
    ;
    Adriansyah A.A.
    ;
    Setianto B.
    ;
    Syafiuddin A.
    Sulfur dioxide (SO2) emission into the atmosphere brought by the burning of fossil fuels in the industries posed significant negative effects on the environment and human beings. Adsorption using activated carbon from agricultural wastes is a viable method commonly used to counter this major problem. SO2 breakthrough experiment was conducted on a fixed bed reactor using oil palm empty fruit bunch activated carbon. The sorbent utilized in this study was characterized via N2 adsorption-desorption isotherm, field emission scanning electron microscopy, and Fourier transform infrared spectroscopy. Three parameters, i.e., reaction temperature, inlet SO2 concentration, and adsorbent dosage, were optimized using Box-Behnken Design. The highest SO2 removal was obtained at 70 °C, 2000 ppm of SO2, and 1 g of adsorbent with adsorption capacity of approximately 1101 mg SO2 /g activated carbon. The developed model was validated using Analysis of Variance (ANOVA), and good agreement between predicted and actual values was obtained. Inlet SO2 concentration, adsorbent dosage, the interaction between these two parameters, and all quadratic terms were found to be significant factors, with adsorbent dosage being most significant based on its highest F-value.
      1