Irnis Azura Zakaria
Thumbnail Image
Preferred name
Irnis Azura Zakaria
Official Name
Zakaria, Irnis Azura
Alternative Name
Zakarya, I. A.
Azura Binti Zakarya, Irnis
Main Affiliation
Scopus Author ID
55749533300
Researcher ID
B-9251-2012

Research Output

Filters

2
Reset filters

Settings
Now showing 1 - 2 of 2
  • Publication
    Anaerobic co-digestion of different types of cow dung with food waste
    (Universitatea Gheorghe Asachi din Iasi, 2023)
    Irnis Azura Zakaria
    ;
    Nur Adlina Mohd Hilmi
    ;
    Muhd Fakhrul Samah
    ;
    Zaki Abdul Aziz Mh Daud
    ;
    Madalina Boboc
    The value of manure as a source of clean energy can be increased through the conversion of animal waste into energy, which can also reduce the negative effects that animal waste disposal has on the environment. Anaerobic digestion (AD) is a potential bioprocess for the utilisation of waste biomass and the conservation of energy. It is also an alternative method of energy recovery and waste treatment that produces biogas, which can be used to generate either electricity or heat and is a byproduct of the digestion process. In this study, different types of cow dung in terms of nutritional processes (grass: bran); 100 % grass, 95 % grass: 5 % bran, and 80 % grass: 20 % bran were taken for anaerobic co-digestion with food waste. The purpose of this study is to investigate the production of biogas as well as the properties of anaerobic co-digestion using different types of cow dung under mesophilic temperature (37°C). Biogas production was measured by the water displacement method. The pH value, Organic Matter (OM) content, C/N ratio, and Volatile Acid (VA) were recorded throughout the experiment. Samples of 100 % grass accumulated the highest biogas production (1250 ml) followed by samples of 80 % grass: 20 % bran (1080 ml) and samples of 95 % grass: 5% bran (780 ml) between the 20th and 23rd days. This shows the sample of 100 % grass-feeding has a better performance on biogas production among the samples.
      15  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