SDI UMT

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Browsing SDI UMT by Title

Now showing 1 - 20 of 50
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    Advanced Technologies for Sustainable Aquaculture
    (Universiti Malaysia Terengganu, 2022-06-27) PSNZ
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    The Application of Pyrolysis in Achieving UNs Sustainable Development Goals
    (Universiti Malaysia Terengganu, 2022-01-27) PSNZ
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    Aquaculture Wastewater
    (Universiti Malaysia Terengganu, 2023-05-24) PSNZ
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    AUTOMATED CONTAINER TERMINAL AND MARITIME CONSTRUCTION RISK
    (Universiti Malaysia Terengganu, 2023-09-25) PSNZ
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    Biological Security and Sustainability
    (Universiti Malaysia Terengganu, 2022-07-27) PSNZ
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    Black Soldier Larvae Meal
    (Universiti Malaysia Terengganu, 2023-01-26) PSNZ
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    Circular Economy and Blue Economy Initiative
    (Universiti Malaysia Terengganu, 2023-03-27) PSNZ
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    Climate Change Adaptation and Fisheries
    (Universiti Malaysia Terengganu, 2022-02-27) PSNZ
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    Climate Change And Sea Turtle Nesting
    (Universiti Malaysia Terengganu, 2024-01) PSNZ
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    The common european framework of reference dissemination in english language education
    (Universiti Malaysia Terengganu, 2024-04-28) PSNZ
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    COMPARATIVE ANALYSIS OF WASTE COOKING OIL BIODIESEL MIXED WITH NANOPARTICLE ADDITIVES ON PHYSICOCHEMICAL PROPERTIES AND DIESEL ENGINE PERFORMANCE
    (UNIVERSITI MALAYSIA TERENGGANU, 2025-09) PSNZ
    The hazardous effect of the pollution of fossil fuels has brought the necessity of shifting conventional energy sources to renewable and clean ones. In this study, the effect of hydrogen addition and CeO2 nanoparticle addition in waste cooking palm biodiesel on a CRDI engine is evaluated. The dosage of the nanoparticle is fixed at 75 ppm and a hydrogen flow rate of 10 L/min is selected for the engine operations. The crystalline structure of the nanoparticles is determined by XRD analysis. Results showed that on the addition of both H2 and CeO2 in a B20 biodiesel blend (80% diesel and 20% biodiesel) the performance, emission, and combustion parameters of the diesel engine improved compared to neat diesel. The brake thermal efficiency was improved by 3.53% and brake fuel consumption was reduced by 16.12% in comparison to diesel at 90% loading condition. The addition of both nanoparticles and hydrogen in the biodiesel blend lowered the emissions of CO by 30%, and HC and smoke by 50% and 42% respectively. However, NOx increased by 11% as compared to diesel. A 6% higher HRR values and 8% higher in-cylinder pressure were obtained while using hydrogen and CeO2 nanoparticle blended biodiesel. This blend also shows the lowest ignition delay period at full load condition which results in more engine power and efficiency. This experimental study has helped pave the way for the use of hydrogen-enriched and nanoparticle-blended biodiesel in place of fossil fuel for the applications of diesel engines.
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    Compassionate Leadership
    (Universiti Malaysia Terengganu, 2023-10-26) PSNZ
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    Cruise and Digital Tourism
    (Universiti Malaysia Terengganu, 2023-02-26) PSNZ
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    Cultural Heritage
    (Universiti Malaysia Terengganu, 2023-06-26) PSNZ
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    Dive Guides and Competency Skill
    (Universiti Malaysia Terengganu, 2023-07-27) PSNZ
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    EFFECT OF LACTIC ACID BACTERIA AS BIO-PRESERVATIONFFECT OF LACTIC ACID BACTERIA AS BIO-PRESERVATION AAGAINST SPOILAGE FUNGI FROM PAPAYA FRUITGAINST SPOILAGE FUNGI FROM PAPAYA FRUIT
    (Universiti Malaysia Terengganu, 2025-08-24) NUR ILIDA MOHAMAD; MUSAALBAKRI ABDUL MANAN; MOHD IZWAN MOHD LAZIM; NORRAKIAH ABDULLAH SANI
    Lactic acid bacteria (LAB) produce several antibacterial compounds, including organic acids that inhibit many types of pathogenic bacteria. The antibacterial activity of LAB with the ability to inhibit growth of pathogenic bacteria associated with foodborne illness is seen as a natural way to improve food safety. This study was carried out to isolate and identify LAB from local pickled guava (Psidium guajava) and papaya (Carica papaya) and to evaluate their antibacterial activity against selected foodborne pathogens. Standard method was used for the isolation of LAB, while identificationwas done based on their morphological characteristics, biochemical reaction and polymerase chain reaction (PCR) amplificationof 16S rRNA gene and sequencing. This study evaluated the ability of cell free supernatant (CFS) of the identifiedLAB to inhibit the growth of selected Gram-positive and Gram-negative foodborne pathogens through microtiter plate method. Determination of the organic acids formation in the CFS that are responsible for the antibacterial activity of the LAB was also conducted using high-performance liquid chromatography (HPLC). The results showed that three LAB from the genus Lactobacillus have been successfully isolated and identifiedas Lactobacillus plantarum (LABP), Lactobacillus reuteri (LABR) and Lactobacillus paracasei (LABC). All three Lactobacillus sp. were able to demonstrate antibacterial activity against foodborne bacterial pathogens used in this study. The results also suggested that the antibacterial activity of CFS of all three Lactobacillus sp. was due to organic acids production.
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    ELUCIDATING THE CALCIUM OXIDE DERIVED FROM THE WASTE SHELLS OF MUD CLAM (GELOINA EXPANSA) AS A CATALYST FOR BIODIESEL PRODUCTION ELUCIDATING THE CALCIUM OXIDE DERIVED FROM THE WASTE SHELLS OF MUD CLAM (GELOINA EXPANSA) AS A CATALYST FOR BIODIESEL PRODUCTION
    (UNIVERSITI MALAYSIA TERENGGANU, 2025-10) PSNZ
    Biodiesel is one of the alternative forms of diesel fuel and can be obtained using the transesterification process of waste cooking oil with a catalyst to accelerate the reaction. The heterogeneous catalyst from waste scallop shells is used due to its potential for being reused in the subsequent transesterification reactions. Heterogeneous catalysts can also be recycled, contributing to their environmentally friendly nature. This study aims to identify the performance of recycling a calcium oxide (CaO) catalyst from scallop shell waste on synthesis biodiesel. The method used is the transesterification method with the basic ingredients of waste cooking oil using a CaO catalyst. Then, after the transesterification process is complete, the catalyst is separated from the biodiesel and recycled to be reused in the transesterification process up to five times. The biodiesel samples obtained are identified for yield value, physico-chemical properties, thermal properties and performance. X-ray diffraction characterization results for the CaO catalyst show that it has a crystal size of 67.83 nm. Scanning electron microscope characterization shows that it has spherical particle shapes. Fourier transform infrared characterization shows the presence of Ca–O bonds. The highest biodiesel yield value of 74.23% is obtained in biodiesel Cycle 1. The flash point value of biodiesel samples ranges from 141.2°C to 149°C. Further, all of the biodiesel samples exhibit a cetane number of 75. The highest lower heating value of 38.22 MJ/kg is obtained in biodiesel Cycle 1 and the viscosity of the biodiesel samples ranges from 5.65 to 5.88 cSt. The density of the biodiesel samples ranges from 881.23 to 882.92 kg/m3. Besides, ester functional groups (C=O) and methyl functional groups have been successfully formed in all samples, with the methyl oleate compound observed as dominating the biodiesel samples. The cloud point value of the biodiesel samples ranges from 12°C to 13°C, and their pour point value ranges from 10°C to 12°C. The lead content in biodiesel is 0.8826 mg/kg. The lowest sulphur content is obtained from biodiesel Cycles 1 and 2 at 0.005%. Performance tests show that biodiesel has lower torque and brake power values than commercial diesel fuel and higher specific fuel consumption values than commercial diesel fuel.