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

Research Output

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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.

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The Effect of Low Initial C:N Ratio during Composting of Rice Straw Ash with Food Waste in Evaluating the Compost Quality

2020-06-10 , Khalib S.N.B. , Irnis Azura Zakaria , Tengku Nuraiti Tengku Izhar

The physicochemical and biological changes was examined during composting of rice straw ash with food waste in order to assess the effectiveness as stability and maturity of compost at low initial C:N ratio of 20 with three different aeration rates of 0.4, 0.6, 0.8 L/min.kg. The rice straw was burned at 300°C temperature to produced rice straw ash before being used to compost with a food waste. A laboratory-scale of bin composter reactor in a cone-shape was used during the composting process. The composting mixture with aeration rates of 0.6L/min.kg maintained the temperature exceeding 55°C for three days to meet the requirement of pathogen destruction compared to the composting mixture with aeration rate 0.4L/min.kg and 0.8L/min.kg. The final C:N ratio for composting mixture with aeration rates 0.4, 0.6 and 0.8L/min.kg was 11. The pH values and moisture content obtained for all composting mixture was in a range of 7-8 and 40-70%. However, the final germination index in all composting mixture was never over 80%.

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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.

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Adsorption of hydrogen sulfide (H2s) from municipal solid waste by using biochars

2022-12-15 , Tengku Nuraiti Tengku Izhar , Kee G.Z. , Farah Naemah Mohd Saad , Shayfull Zamree Abd. Rahim , Irnis Azura Zakaria , Che Besom , Ibad M. , Syafiuddin A.

The emission of hydrogen sulfide (H2 S) from municipal solid waste is one of the environmental issues that raised the public’s attention and awareness. Exposure to H2 S that brings a foul smell of rotten eggs will cause headaches, irritation, dizziness, fatigue, and even death if the concentration of H2 S is too high. The study’s goals are to investigate the properties of biochars made from rice hulls, banana peels, and sawdust; to compare the biochars’ physical and chemical properties; and establish the H2 S removal efficiency of the three biochars. Biochars derived from rice hull (RHB-500), banana peel (BPB-550), and sawdust (SDB-500) by pyrolysis were used as the adsorbents. The biochar yield, pH, ash content, surface functional group, and morphology of the biochars produced were investigated. In this study, H2 S was synthesized by mixing food waste and soil in the experimental column. The H2S produced was reduced by the adsorption method. The removal efficiencies of H2 S for each biochar were determined by allowing the synthetic H2 S to flow through the two columns that were packed with sand (act as control) and biochars, respectively. All biochars were alkaline, and BPB-550 had the highest pH, followed by SDB-500 and finally RHB-500. The order for removal efficiency of H2 S (>94%) is BPB-550 > SDB-500 > RHB-500. Overall, the biochars derived from biomass had a strong ability to act as the adsorbents for H2S removal.

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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.

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Malaysian and Libyan perspectives on single-use plastic's environmental impact during the pandemic COVID-19: a pilot study

2023 , Kamal Yousef Ali Zreba , Tengku Nuraiti Tengku Izhar , Farah Naemah Mohd Saad , Irnis Azura Zakarya , Rajeb Salem A.Hwidi

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.

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Publication

The Effect of Chemical Treated Spent Mushroom Substrate (SMS) on Lignocellulosic Content

2023-01-01 , Adi M.R.M. , Tengku Nuraiti Tengku Izhar , Norlia Mohamad Ibrahim , Norhidayah Abd Aziz , Hadiyanto H. , Matei M.

A by-product of the mushroom industry, spent mushroom substrate (SMS) is primarily made of lignocellulosic agricultural waste. SMS contains cellulose (38-46.6%), lignin (25-34.5%), and hemicellulose (19-27.7%) and is nutrient-rich. The primary objectives of this study included the characterization of SMS, analysis of lignocellulosic content prior to and following pre-treatment, analysis of the effects of various NaOH concentrations with varying molarities (1.0 to 5.0 Molar), and analysis of surface morphology using a scanning electron microscope (SEM). The result that comparison between untreated and treated sample The result for untreated are contain high amount of lignin from 23.85% to 27.39% and for treated are amount reduce from 20.6% to 23.85%. The difference of NaOH concentration from 1.0 to 5.0 Molar, so the best pre-treatment is alkaline pre-treatment from 1.0 to 3.0 M are the best concentration to treat SMS sample from alkaline pre-treatment and proved sodium hydroxide pre-treatment as an effective method to reduce the hemicellulose and lignin contents. Images clearly showed how the pre-treatment could alter the biomass's structural makeup and distort it, increasing the surface area that was open to enzymatic attack. The pre-treated SMS's surface had numerous sporadic pores and cracks. The study's findings demonstrated that SMS from the P. sajor-caju species has the potential to provide a new source of glucose for bioethanol production.

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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.

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Iron removal efficiency in synthetic Acid Mine Drainage (AMD) treatment using peat soil

2022-01-01 , Mohd Syazwan Mohd Halim , Abdul Haqi Ibrahim , Tengku Nuraiti Tengku Izhar , Suhaina Ismail , Ku Esyra Hani Ku Ishak , Moncea Andreea

Acid mine drainage (AMD) formation is due to the sulfide minerals reaction either chemically or biologically when exposed to atmospheric conditions. The AMD formation often occurred in the region involved with anthropogenic activities, including mining, agricultural plantation, urban development and logging. Treatment of AMD is a challenging part of most mining operations around the world. Selection of method treatment is crucial depending on the area’s geological, mineralogical, topography and AMD characteristic. There are two types of method treatment; active and passive treatment method. In this study, passive treatment method was adopted; which is successive alkalinity producing system (SAPS). The study aims to analyze effect of variable parameters on iron (Fe) concentration and propose optimum operating condition for AMD treatment. Peat soil and limestone aggregate was used as treatment media in treatment tank. Synthetic AMD was formulated using sulphuric acid (H2SO4) and iron sulfate (FeSO4) to represent actual AMD. Once the synthetic AMD was introduced, water samples were collected and analyzed using UV–Vis test after 6 to 48 h’ retention time. Based on the analysis, the proposed methodology has successfully reduced more than 85% iron content only after 6 h of retention time. The maximum Fe removal percentage recorded was 95%, using the higher peat soil depth configuration. The statistical analysis results show that the optimum operating condition for SAPS with high Fe removal is using high peat soil depth. Experiments with higher peat soil depth provide satisfactory results in treating the high initial Fe concentration regardless of the retention time for the AMD treatment.

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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.

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