Tengku Nuraiti Tengku Izhar
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Preferred name
Tengku Nuraiti Tengku Izhar
Official Name
Tengku Nuraiti, Tengku Izhar
Alternative Name
Tengku Izhar, Tengku Nuraiti
Tengku Izhar, T. N.
Izhar, T. N.T.
Izhar, T. Nuraiti T.
Izhar, T. N.Tengku
Main Affiliation
Scopus Author ID
57189071410
Researcher ID
AAY-2768-2021

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  • Publication
    Performance of Two Phase Anaerobic Digestion on Food Waste for Biogas Production
    ( 2022-01-01)
    Zakarya I.A.
    ;
    Tengku Nuraiti Tengku Izhar
    ;
    Siti Khadijah Za'aba
    ;
    Hilmi N.A.M.
    ;
    Mohd Rashidi Che Beson
    ;
    Matei M.
    Every year, the total amount of solid waste generated in Peninsular Malaysia grew, according to the Malaysia government. The typical solid waste management system practiced in developing country brings many problems that can cause risks and hazards for living things and the environment in Malaysia if there are not managed properly. For example, illegal dumping cause groundwater and soil pollution. The methane gas produced from the landfill causes greenhouse effect. Food waste is categorized under household waste, where it is produced in residential areas, restaurants, cafeteria, markets and commercial areas. Therefore, anaerobic digestion process is introduced for organic waste with higher solids contents such as food waste as an alternative method. The effectiveness of anaerobic digestion process can be investigated through this process. In this study, two phase of anaerobic digesters was proposed. The reactor was operated at a temperature 35 °C, analyzed for biogas production, pH values and C/N ratio. The highest biogas production in this study is 50.4%. For a co-digestion containing more sludge can increase the pH value and biogas production.
  • Publication
    Municipal solid waste characterization and quantification as a measure towards effective solid waste management in UniMAP
    ( 2020-12-29)
    Irnis Azura Zakaria
    ;
    Fazhil N.S.A.
    ;
    Tengku Nuraiti Tengku Izhar
    ;
    Siti Khadijah Za'aba
    ;
    Jamaluddin M.N.F.
    The most common environmental problems in Malaysia is increasing in solid waste generation. Solid waste generation and composition knowledge is compulsory as a benchmark for the decision making in managing municipal solid waste management strategy. The objective of this study was to measure solid waste generation and compare solid waste composition at cafeterias of UniMAP. Three different cafeterias had been chosen as a sampling location. Waste was sorted out into several components such as food waste, plastic, papers, metal, glass, and other types of waste. There is significance difference in data collection between the three locations where the organic waste was the main component in waste composition. Solid waste sampling and laboratory analysis were carried out based on random sampling method by using American Standard Test Method (ASTM) standards for proximate analysis (moisture content, ash content, volatile matter and fixed carbon). Ultimate analysis which is C:N ratio was carried out. Results showed that total municipal solid waste generated during two weeks of collection at School of Manufacturing, Tuanku Tengku Fauziah Residential College (PFI 2) and Tan Sri Aisyah Ghani Residential College (KKTAG) were 459.9 kg (0.1452 kg/p/day), 709.0 kg (0.0292 kg/p/day) and 201.90 kg (0.0163 kg/p/day). Based on this information, a proper waste management can be introduced to treat organic waste such as food waste and paper including inorganic waste efficiently.
      1
  • Publication
    Life cycle assessment of expanded polystyrene
    ( 2021-01-26)
    Lim Y.S.
    ;
    Tengku Nuraiti Tengku Izhar
    ;
    Irnis Azura Zakaria
    ;
    Sara Yasina Yusuf
    ;
    Siti Khadijah Za'aba
    ;
    Mohamad M.A.
    Expanded polystyrene (EPS) is one of the most common materials used in packaging. In Malaysia, EPS is a type of plastic which is not in the recycling category. Usually, EPS wastes will end up in landfill and incinerator, leading to severe environmental impacts. Therefore, a cradle-to-grave life cycle assessment (LCA) study of EPS was carried out to investigate the potential environmental impacts of EPS. The most significant potential environmental impact will also be identified. Both will be identified under 2 different scenarios. The study was analyzed using GaBi Education Software with the method of TRACI 2.1 to the environmental indicators of global warming potential (GWP), acidification potential (AP), eutrophication potential (EP), and ozone depletion potential (ODP). In scenario 1, the emission percentage for GWP, AP, EP, and ODP are 99.73 %, 0.21 %, 0.06 %, and 3x10-6 %, respectively. As for scenario 2, all the 3 conditions show similar trend with scenario 1. The LCA study of EPS is particularly focused on the manufacturing, distribution, and the end-of-lifetime treatments, with the introduction of recycling into the system. The findings show that manufacturing of EPS is the major contributor of the environmental impacts and GWP contributes to the most significant potential environmental impacts. Overall, recycling was found to have the least impact to the environment, which possibly be used as the new end-of-lifetime treatment of EPS in Malaysia.
      13  4
  • Publication
    Co-digestion of food waste with cow dung by anaerobic digestion for biogas production
    ( 2023-01-01)
    Hilmi N.A.M.
    ;
    Irnis Azura Zakaria
    ;
    Ahmad Anas Nagoor Gunny
    ;
    Tengku Nuraiti Tengku Izhar
    ;
    Siti Khadijah Za'aba
    ;
    Samah M.F.
    ;
    Daud Z.A.A.M.
    ;
    Beson M.R.C.
    Food waste is categorized under household waste which were produce in large amount every day and it can be a good potential to generate biogas production via anaerobic digestion. In this research, the characteristics of co-digestion process are measured to determine the biogas production between food waste and cow dung. The food waste is co-digest with two different type of cow dung are collected depends on their food consuming (grass:bran); 100% grass and 95% grass: 5% bran. The digester is maintained at 35°C of temperature for mesophilic condition. pH values and C/N ratio are noted until 35 days. The biogas production is analysed by using biogas analyzer. The highest biogas production in this study is 67.2% which are co- digest between food waste and cow dung (100%) compared cow dung (95%) is 53.9% on day 26. This shows that the cow dung (100%) produces more biogas than cow dung (95%). Anaerobic digestion process will best suits for biogas production and for the best utilization of food waste.
      1
  • Publication
    Performance of two phase anaerobic digestion on food waste for biogas production
    ( 2022-01-01)
    Irnis Azura Zakaria
    ;
    Mohammad Rizam Che Beson
    ;
    Tengku Nuraiti Tengku Izhar
    ;
    Siti Khadijah Za'aba
    ;
    Monica Matei
    ;
    Nur Adlina Mohd Hilmi
    Every year, the total amount of solid waste generated in Peninsular Malaysia grew, according to the Malaysia government. The typical solid waste management system practiced in developing country brings many problems that can cause risks and hazards for living things and the environment in Malaysia if there are not managed properly. For example, illegal dumping cause groundwater and soil pollution. The methane gas produced from the landfill causes greenhouse effect. Food waste is categorized under household waste, where it is produced in residential areas, restaurants, cafeteria, markets and commercial areas. Therefore, anaerobic digestion process is introduced for organic waste with higher solids contents such as food waste as an alternative method. The effectiveness of anaerobic digestion process can be investigated through this process. In this study, two phase of anaerobic digesters was proposed. The reactor was operated at a temperature 35 °C, analyzed for biogas production, pH values and C/N ratio. The highest biogas production in this study is 50.4%. For a co-digestion containing more sludge can increase the pH value and biogas production.
      7  6