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
    Phytoremediation potential of Azolla pinnata on water quality and nutrients from agricultural water
    ( 2022-09-01)
    Farah Naemah Mohd Saad
    ;
    Remlee N.N.
    ;
    Irnis Azura Zakaria
    ;
    Kamaruddin M.A.
    ;
    Tengku Nuraiti Tengku Izhar
    ;
    Ibrahim M.H.
    ;
    Alam M.
    ;
    Andini A.
    ;
    Ratnasari A.
    ;
    Boopathy R.
    ;
    Syafiuddin A.
    The area of polluted water expands day by day due to the rapid increase in agricultural activities. Application and the excessive amount of fertilizer in the agricultural activity can reduce the water quality. One of the alternative way to remove pollutants from polluted water is phytoremediation technique. This paper attempt to evaluate the potential of Azolla pinnata act as a phytoremediation to treat the agricultural water. Three types of media with different dosage which are tap water, water added with organic fertilizer (chicken manure: dosage range of 10–30 g), and water added with inorganic fertilizer (growing fertilizer: dosage range of 10–30 g) were employed. Media B10 (water added with 10 g organic fertilizer) had the highest removal 3– – efficiencies for NH3 –N, PO4, and NO3 with 25%, 38.5% and 30%. In addition, turbidity and pH value diminished to 15.65% and 18.6%, respectively. However, it indicated that Azolla pinnata has the potential as an agent of phytoremediation especially for water polluted with organic fertilizers.
  • Publication
    Malaysian and Libyan Perspectives on Single-Use Plastic's Environmental Impact During the Pandemic COVID-19: A Pilot Study
    ( 2023-01-01)
    Zreba K.Y.A.
    ;
    Tengku Nuraiti Tengku Izhar
    ;
    Farah Naemah Mohd Saad
    ;
    Irnis Azura Zakaria
    ;
    Hwidi R.S.A.
    Plastics have become a significant threat to natural ecosystems as well as human health. The use and consumption of plastics improves our quality of life significantly, but it is critical to transition to more sustainable alternatives. Thus, the current study proposes an investigation into the impact of single use plastic products during pandemic on the impact to the environment from the Malaysian and Libyan perspective. A pilot study was conducted to examine the strength of the questionnaire in collecting on the environmental impacts of single use plastic during COVID-19 pandemic distributed across two countries (Libya and Malaysia). SPSS was used to test the questionnaires' strength with 40 participants, 20 in each nation. The reliability test results with Cronbach’s Alpha predicted values of 0.7-0.86 and actual data Alpha values 0.87-0.93, normal test of variance inflation factor ranging between 1 and 5, skewness and kurtosis values of -1.343 to -0.076 and 5.312 to -0.024 respectively confirmed the strength of the questionnaires as benchmarked in the literature. Further, the participants' responses to the quality of the questionnaire in determining the single use plastic impact to environmental have clearly revealed the strength and applicability of this questionnaire for wider data collections.
  • Publication
    Effects of magnesium ions in microbial cells adhesion of attached growth system for the enhancement of biogas production
    ( 2020-01-01)
    Nabilah Aminah Lutpi
    ;
    Wong Yee Shian
    ;
    Tengku Nuraiti Tengku Izhar
    ;
    Kiong, Yiek Wee
    This research aims to improve the biogas production by employing cell immobilisation technique under thermophilic conditions. The thermophilic fermentative biogas production was carried out by immobilising the anaerobic sludge obtained from palm oil mill treatment plant on granular activated carbon (GAC) in repeated batch mode. Different concentration of magnesium ions (Mg2+) (0.25, 0.5, 0.75, 1.0 and 1.5 g/l) on biogas production was investigated at 60°C with an initial sucrose concentration of 5 g/l as feedstock. The effect of Mg2+supplementation at the initial stage of immobilisation process is important to increase the formation of biofilm in the attached growth system. This study had found that Mg2+could enhance the biogas production capacity with optimum Mg2+concentration of 0.75 g/l.
  • Publication
    Comparative Environmental Impact Evaluation of Disposable Surgical and Reusable Cloth Face Masks
    ( 2023-01-01)
    Ragaven R.
    ;
    Sara Yasina Yusuf
    ;
    Dewika M.
    ;
    Zulkifli A.R.
    ;
    Tengku Nuraiti Tengku Izhar
    ;
    Amneera W.A.
    Malaysia, wearing face mask during Covid-19 outbreak were mandatory. This action has caused significant surge in face mask production which deem to affect environment and human health. This paper evaluates and compared the environmental impacts, in a life cycle assessments perspective between disposable surgical face mask and reusable cloth face mask using cradle-to-grave approaches according to ISO 14040. The environmental impacts were assessed based on nine midpoint impact categories which are ozone depletion, greenhouse gases, acidification, eutrophication, smog formation, human health cancer and non-cancer, human health particulates and ecotoxicity. The functional unit for both types of face masks is a person wearing face mask as protection every day for one year (365 masks for disposable surgical face mask and 3 masks for reusable cloth face mask). The LCA tool used was OpenLCA software with Ecoinvent consequential 3.7.1 version database and TRACI 2.1 for impact method assessment. The study showed that reusable cloth face mask had the lowest impact compared to disposable surgical face mask across the assessed midpoint impact categories. This study suggested incineration as the best disposal method for the End-of-Life (EoL) of both face masks. Sensitive analysis also performed by manipulating the amount of face mask used per individual and it was found that the amount of mask used had significant effects to the environmental performance.
  • Publication
    Comparative Study between Organic Liquid Fertilizer and Commercial Liquid Fertilizer and Their Growth Performances on Mustard Greens
    ( 2023-01-01)
    Muthu H.D.
    ;
    Tengku Nuraiti Tengku Izhar
    ;
    Irnis Azura Zakaria
    ;
    Farah Naemah Mohd Saad
    ;
    Ngaa M.H.
    Organic liquid fertilizers (OLF) are made up of essential plant nutrients, as well as beneficial microbes that assist in the recycling of organic waste. The purpose of this study was to determine the macronutrient content of organic liquid fertilizers and compare the growth performance of mustard greens under Wick System hydroponic conditions. Market wastes also known as vegetable wastes, were utilized to produce organic liquid fertilizers and compare it to commercial fertilizer (Nutrient Solution, NS). The vegetable wastes were fermented with water and Effective Microorganisms (EM) Bokashi separately. The ratios used for fermentation are 2 kilograms of vegetable wastes, 0.5 litres of water and 100 grams of EM Bokashi. A parameter study on the OLF and OLF with Bokashi to determine the nitrogen (N), phosphorus (P) and potassium (K) were done. Thereafter, four Wick System (pure water, OLF, OLF with Bokashi and NS) were setup to monitor the growth performance of mustard greens twice a week. The organic liquid fertilizers are produced after 40 days of fermentation and used at a dilution of 1: 10 in the hydroponic system. The OLF and OLF with Bokashi showed the ranges of pH values as 5.1 and 4.6 respectively. The results for the hydroponic system showed that OLF demonstrated the best growth performance. The number and size of leaves and the height of the plants in the NS hydroponic system were almost similar to the plants in OLF hydroponic system. The colour of plants in OLF changed slightly to yellowish green towards the end of the growing season. The life spent of mustard greens in OLF with Bokashi hydroponic system was the least compared to other hydroponic system. This study showed that organic liquid fertilizer is as effective as commercial liquid fertilizer. Considering, it has all the nutrients that plants need to grow.
  • Publication
    User, industry, and waste management perspectives on single-use plastic's environmental impact during the pandemic : a pilot study
    ( 2022-01-01)
    Zreba K.Y.A.
    ;
    Tengku Nuraiti Tengku Izhar
    ;
    Irnis Azura Zakaria
    ;
    Hwidi R.S.A.
    Plastics have become a significant threat to natural ecosystems as well as human health. The use and consumption of plastics improves our quality of life significantly, but it is critical to transition to more sustainable alternatives. Thus, this study proposes an investigation into the impact of single use plastic products during pandemic on the impact to the environment from the perspective of the user, industry, and waste management. A pilot study was conducted to examine the strength of the questionnaire in collecting on the environmental impacts of single use plastic during coronavirus pandemic with two groups of participants (industry and users) distributed across two countries (Libya and Malaysia). SPSS was used to test the questionnaires' strength with 40 participants, 20 in each nation. The reliability test results with Cronbach's Alpha predicted values of 0.7-0.86 and actual data Alpha values 0.87-0.93, normal test of variance inflation factor ranging between 1 and 5, skewness and kurtosis values of -1.343 to -0.076 and 5.312 to -0.024 respectively confirmed the strength of the questionnaires as benchmarked in the literature. Further, the participants' responses to the quality of the questionnaire revealed the strength and applicability of this questionnaire for wider data collections.
  • 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
    Overview on use of zeolites as bulking agent to optimize organic waste composting process
    ( 2020-12-29)
    Hamid N.J.A.
    ;
    Kadir A.A.
    ;
    Sarani N.A.
    ;
    Hassan M.I.H.
    ;
    Hashar N.N.H.
    ;
    Hashim A.A.
    ;
    Hissham N.F.N.
    ;
    Yi L.Q.
    ;
    Tengku Nuraiti Tengku Izhar
    There is about 2.01 billion metric tons of municipal solid waste (MSW) produced annually and organic waste constitutes of a major portion from total waste generation worldwide. This current circumstance not only create extra burden on the landfill, but also causing some environmental issues such as greenhouse gases emission, odor emission and leachate production. Therefore, a sustainable and pro-environmental of organic waste disposal solution is acknowledged by composting practice. However, organic waste consists of some significant properties include high in salt, oil, nitrogen and moisture content. All of these properties contributing difficulties on the efficiency of organic waste composting process. In previous studies, researchers had studied various bulking agents such as biochar, sawdust, lime and others in order to optimize the efficacy of composting process. Nevertheless, utilization of zeolite as bulking agent in composting process is getting famous in the recent years due to its unique physiochemical characteristics. Hence, this article attempts to review the potential of zeolites in optimizing the composting process for better understanding of the mechanism as well provides valuable insights for sustainable organic waste management practice.
  • Publication
    Mediating Effect of COVID-19 Pandemic on Single Use Plastic Production, Usage and Disposal Management Models Correlations
    ( 2023-01-01)
    Zreba K.Y.A.
    ;
    Tengku Nuraiti Tengku Izhar
    ;
    Irnis Azura Zakaria
    ;
    Hwidi R.S.A.
    ;
    Hweidi A.S.A.
    This research examines the consequences of the COVID-19 epidemic on the production, use, and disposal of single-use plastics. This research explores the intricate relationships between the impacts of COVD-19 on single-use plastic production, usage, and waste management with a focus on the mediating effects of the pandemic related to model parameters and correlations to develop a trustworthy approach. The report examines first the increasing evidence regarding the pandemic's influence on various users and industries, and then the consequences for waste management and the environment. The research then examined the relationships and modelling framework correlations between the variables utilised to estimate the influence of COVID-induced changes in production, consumption, and management on single-use plastics. The study variables captured the influence of production, usage, and disposal on the environment. The study's parameters are equally linked to types of usage, have a pronominal effect, and disposal plays a vital role in the environmental impact, which makes them extremely dynamic for parameters in this study. Single-use plastic aggregation in the environment is predicted to be a dominant mechanism by disposal behaviour.
  • Publication
    A Comparative Study on Generation and Composition of Food Waste in Desa Pandan Kuala Lumpur During Covid-19 Outbreak
    ( 2022-01-01)
    Irnis Azura Zakaria
    ;
    Rashidy N.A.
    ;
    Tengku Nuraiti Tengku Izhar
    ;
    Ngaa M.H.
    ;
    Laslo L.
    Food waste is a type of solid waste that is heavily influenced by consumers. The composition (%) and the total weight generation (kg) of food waste were determined during the Covid-19 outbreak. The data was obtained by direct weighing of the food waste collected where it was generated throughout the day. Findings have shown that 63.3% of the composition of uncooked food waste types identified is generated by internal organs, vegetables, fruits, and eggshells, while 36.7% of the identified composition of cooked food waste types is generated by rice and noodles, bones, vegetables, fruits, and others in Desa Pandan. During six days of collection, the total food waste generated by 30 households, 10 restaurants, and 3 schools was 146.5 kg (0.20 kg/capita/day), 231.7 kg (0.026 kg/capita/day), and 155.4 kg (0.010 kg/capita/day) respectively. A food waste awareness survey was conducted online with 100 respondents using Google Forms. Findings show that the Covid-19 pandemic did influence people's attitudes and practices regarding food purchase, management, and consumption habits, all of which have a substantial impact on reducing food waste generation at the household level.