Nur Izzati Iberahim
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Nur Izzati Iberahim
Official Name
Nur Izzati, Iberahim
Alternative Name
Berahim, Nurizzati
Iberahim, N. I.
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Scopus Author ID
57200276640

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  • Publication
    Wastewater remediation and bioelectricity generation in dual chambered salt bridge microbial fuel cell: A mini-review
    ( 2024-09-01)
    Nur Izzati Iberahim
    ;
    Nabilah Aminah Lutpi
    ;
    Ho Li Ngee
    ;
    Wong Y.S.
    ;
    Ong Soon An
    ;
    Farrah Aini Dahalan
    The purpose of this article is to assess the feasibility analysis of microbial fuel cells (MFCs), particularly in the configuration of dual chamber salt bridge microbial fuel cell (DCSB-MFC), as a promising approach for simultaneous bioelectricity generation and wastewater remediation. The application of a salt bridge presents an economically viable alternative to the use of a proton exchange membrane, which is known for its high cost, in the construction of MFCs. This arrangement has been demonstrated to offer significant benefits in terms of enhancing the performance of new elements and evaluating operational parameters. However, it also encounters issues related to the total internal resistance (Rint) of the MFCs as well as power density (P). In addition, it has been found that traditional packing materials such activated carbon and gravel demonstrate poor permeability, internal resistance, and slow biofilm growth. Furthermore, there is a necessity to search for electrodes that possess high resistance to corrosion and are cost-effective to achieve optimal bioelectricity generation. Therefore, this article aims to emphasize the research areas that require attention. By addressing these areas, the actual implementation of this configuration can be brought closer to practical implementation.
      7  27
  • Publication
    Extraction of omega-3 fatty acid from Jade Perch (Scortum barcoo) using enzymatic hydrolysis technique
    (Chemistry Department, Universitas Gadjah Mada, 2020)
    Nur Izzati Iberahim
    ;
    Yee Chee Hann
    ;
    Zainab Hamzah
    ;
    Khairunissa Syairah Ahmad Sohaimi
    Extraction of omega-3 fatty acid from Jade Perch (Scortum barcoo) using enzymatic hydrolysis techniques are expected to be more economically possible techniques due to the uses of the enzyme with the characteristic of environmentally friendly, reusable and less energy required during large-scale production. Design of Experiments (DOE) was used to study the effect of process parameters such as the concentration of alcalase (0.5–1.5%), temperature (50–70 °C) and pH (6.5–8.5) towards the yield of oil. The findings showed 16.55% of oil yield was extracted from the jade perch under an optimum condition at 50 °C, 6.5 pH with 0.5% of enzyme concentration for 2 h incubation time. The fish oil was then undergone enzymatic concentration of omega-3 FA using lipase from Candida rugosa. The acid value and peroxide value of the fish oil was 71.422 mg KOH/g and 0.799 meq/kg, while the acid and peroxide value of the omega-3 concentrated oil was lower to 49.074 mg KOH/g and 0.399 meq/kg. The FTIR spectrum showed the presence of C–H stretch, =C–H stretch and C=O stretch bond justified the existence of lipids as it presents of alkanes, alkene, and carboxylic acids functional group. At the same time, GC-MS analysis showed the fish oil contains higher total PUFA content and omega-3 fatty acid content than omega-3 concentrated oil.
      1  2
  • Publication
    Synthesis and characterization of carboxymethyl cellulose derived from office paper waste for methylene blue dye removal
    ( 2021-02-23)
    Nor Aida Yusoff
    ;
    Yee L.Y.
    ;
    Nur Izzati Iberahim
    ;
    Noor Ainee Zainol
    ;
    Sriyana Abdullah
    ;
    Siti Nazrah Zailani
    The aim of this research was to extract cellulose from office paper waste and converted into carboxymethyl cellulose (CMC) based flocculant to treat methylene blue (MB) dye solution. The yield of extracted cellulose obtained was 62.17%. Three different CMC samples were prepared. Degree of substitution (DS) for CMC-1 is 0.6585, CMC-2 is 0.8124 and CMC-3 is 0.8946. This proved that CMC are substituted into cellulose structure due to the DS of the commercial CMC are in the range of 0.4 to 1.5. The coagulation flocculation process of the MB dye shows that the CMC-3 was effective for methylene blue dye removal with highest percentage (98.14%) at pH 9.0, flocculant dosage of 210 ppm with 100 ppm MB concentration solution.
      2  39
  • Publication
    Hexane-isopropanol extraction and quality assessment of Omega-3 fish oil from Atlantic Salmon (Salmo Salar)
    (IOP Publishing Ltd., 2020)
    Nur Izzati Iberahim
    ;
    B C Tan
    Atlantic salmon (Salmo Salar) is one of the fish species that rich in omega-3 fatty acids. Consumption of omega-3 fatty acids can lower down the risk of cardiovascular disease and coronary heart disease. The extraction of omega-3 fish oil from Atlantic salmon by using hexane and isopropanol was conducted in this research. Response Surface Methodology (RSM) was used to study the impact of parameters which were temperature (50-90°C), centrifuge speed (1000-3000rpm) and solvent ratio of hexane to isopropanol (0.5-1.5) to the percentage of oil yield. The results obtained shows that 15.23%± 0.61 of oil yield from Atlantic salmon under an optimum condition of 70°C, 3000 rpm and solvent ratio of hexane to isopropanol of 1.5. The acid value, peroxide value and p-anisidine value of the fish oil obtained were 7.48 mg KOH/g, 1.94 meq/kg and 5.56 respectively which were all within the acceptable limit which stipulated by Global Organization for EPA and DHA (GOED) and Food and Agricultural Organization of the United Nations (FAO). The FTIR analysis proved the presence of alkane and carboxylic acid in the fish oil. Furthermore, GC-MS analysis showed that the fish oil contains higher monounsaturated fatty acids (MUFA) contents followed by polyunsaturated fatty acids (PUFA) and 4.5525% of total omega-3 fatty acids.
      16  1
  • Publication
    Hydrogen sulfide removal from fermentative biohydrogen process: Effect of ZSM-5 zeolite loading
    ( 2024-03-01)
    Asman M.K.A.
    ;
    Nabilah Aminah Lutpi
    ;
    Wong Y.S.
    ;
    Hanif M.A.
    ;
    Ong Soon An
    ;
    Farrah Aini Dahalan
    ;
    Nur Izzati Iberahim
    ;
    Hamdzah M.
    The production and consumption of biohydrogen is growing because it is a “green,” renewable energy that can be obtained in a relatively cost-effective manner through anaerobic digestion. Biohydrogen produced from biomass is a viable source of renewable energy; nevertheless, the presence of highly toxic and corrosive hydrogen sulfide (H2S) in the process can hinder the quality of biohydrogen production and limit its application in energy conversion equipment. Consequently, the goal of the research was to assess the feasibility of using ZSM-5 zeolite for H2S adsorption that function as activating agent to enhance biohydrogen quality under thermophilic conditions. The effect of ZMS-5 Zeolite loading (0.2–1.0 g) on biohydrogen production via dark fermentation from mixed fruit waste (MFW) was investigated using anaerobic sludge from a sewage treatment plant. The pH of the broth mixture was adjusted to 6.0, anaerobic conditions were created by purging it with nitrogen gas, and the temperature of the fermentative biohydrogen process was maintained at 60°C. Meanwhile, the H2S adsorption test was run at ambient temperature with flow rates (100 ml/min) and an H2S inlet concentration of 10000 ppm. The results indicate that the Z + H2S exhibit spectral lines corresponding to the S-H asymmetric stretching vibration of H2S at 2345.97 cm−1. The ideal adsorption capacity is at 0.8 g with yet, increasing the dosage amount of adsorbents, increases the time required for the adsorbent to achieve 90% saturation. The non-linear curve fitting demonstrated that the adsorption kinetics of all dosages used followed those of the Avrami kinetic model. This approach of using ZSM-5 zeolite for H2S removal provides an advantage in terms of minimizing environmental pollution and having great potential uses in industrial processes.
      41  2
  • Publication
    Ammonium adsorption - Desorption using rice husk biochar
    ( 2021-05-24)
    Khairunissa Syairah Ahmad Sohaimi
    ;
    Nur Izzati Iberahim
    ;
    Ghani A.A.
    ;
    Zafifah Zamrud
    ;
    Heng C.W.
    Rice husk was utilized into biochar by pyrolysis and used as adsorbent for ammonium removal. Rice husk biochar (RHB) was produced at temperature of 3500C, 4000C, 4500C, 5000C, and 5500C. Characteristics of biochar were analyzed by moisture content, ash content, pH Zero Charge and Fourier Transform Infrared (FTIR) Spectroscopy. As the temperature for the pyrolysis increases, the moisture content of RHB decreases while the ash content of RHB increases. From the pH zero charge analysis, the value obtained from analysis is pH 7. The FTIR spectra showed the organic part of RHB with different functional groups such as alkene, alcohol, phenol, ether, ester etc. Based on the result of the characterization test, RHB500 was chosen as the best biochar for the adsorption of ammonium. The equilibrium contact time was 180 minutes and the optimum adsorbent dosage was 0.1g and the optimum concentration of ammonium was 1.2 ppm. For the adsorption-desorption of ammonium, RHB can run up to 5 cycles for biochar regeneration. Adsorption kinetic, pseudo-second-order model is more preferable than pseudo-first-order model because R2 value is 0.9995 which closer to 1.
      33  1
  • Publication
    Enzymatic hydrolysis extraction and quality assessment of fish oil from Patin catfish (Pangasius Hypophthalmus)
    (Wiley, 2023-04)
    Nur Izzaidah Muhammad Indera
    ;
    Nur Izzati Iberahim
    ;
    Myzairah Hamdzah
    ;
    Nabilah Aminah Lutpi
    ;
    Farrah Aini Dahalan
    This study aimed to characterize the extraction of fish oil and investigate the oil quality of Patin catfish (Pangasius hypophthalmus) using the enzymatic hydrolysis technique. The selected parameters were the concentration of enzymes, temperature, and reaction time. Patin catfish available across Southeast Asia is one of the species most accessible to fast‐growing Malaysian population and one of the most convenient food supply alternatives. In this research, alcalase was used as the source of enzyme to obtain the oil yield percentage. The optimization of the recovery process of Patin catfish oil using enzymatic hydrolysis technique was conducted using the multifactor experiments software Design of Experiments (DoE), which obtained an optimum condition for the oil yield percentage at 55.3°C with a 1.2% enzyme concentration for 3 h. The percentage of oil yield obtained was 10.90%. The fish oil was further characterized via the FTIR spectroscopy analysis at 4000–700 cm−1. The investigation of the oil quality was conducted based on analysis test. The acid value test gives 2.24 mg KOH/g, peroxide with 4 meq/kg, and p‐anisidine analysis leads to 0.895.