Zaity Syazwani Mohd Odli
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Preferred name
Zaity Syazwani Mohd Odli
Official Name
Zaity Syazwani, Mohd Odli
Alternative Name
Odli, Zaity Syazwani Mohd
Odli, Z. S.
Odli, Z. S.M.
Mohd Odli, Zaity Syazwani
Main Affiliation
Scopus Author ID
57189063151
Researcher ID
FRV-0453-2022

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The relationship between land use and marine litter at Kuala Perlis coastal area

2020-06-10 , Zaity Syazwani Mohd Odli , Anisah Lee Abdullah , Farah Naemah Mohd Saad , Nurliana Syahirah Aris Fadzillah

Abundance of litter exist in our ocean are listed among the crucial threat to the biodiversity that caused a particular concern due to the abundance, durability and persistence in the coastal environment since the area is highly productive. This research paper is to focus on coastal pollution with the objectives of identifying marine litter to relate with the land use in Kuala Perlis, Malaysia. Marine litter is collected at three points along the shoreline stretching 30 meters in length and 5 meters in width. Collected litter varied between categories and the highest amount was plastic weighing 53.15 kg/m2 followed by fabric, wood, glass, rubber and metal. Generally, there are significant relationship between land use and accumulation of marine debris. As there is a development in the area, the accumulation of marine debris increases, in contrast with the small amount of debris found in undeveloped or nonpopulated areas. The accuracy assessment obtained from Landsat 8 year 2014 and 2018 and Kappa statistics shows value range from 0.7 to 0.9 which indicate good classification performance using ERDAS Imagine 2015. Slight changes in urban development, cultivation area and forest with 1 % while for the water bodies and unclassified or cloud with 9% and 8 %.

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Marine Macro-and Micro Plastic Litter on Beach Sediment of Northern Peninsular Malaysia

2024-02-01 , Zaity Syazwani Mohd Odli , Lee A.J. , Hamzah M.S.A.

This paper investigates the spatial distribution of small plastic litter on the beach of Kuala Perlis and Pulau Langkawi in the northern region of Peninsular Malaysia. The objectives are to ascertain the categories of macro marine litter and macroplastic types, the amount of microplastic in the sediment layer, and the relationship between macroplastic and microplastic. Macro marine litter was collected in 100-meter transects at six different locations. Sediment samples for microplastic identification were collected using a quadrat measuring 0.5 m × 0.5 m with a depth of 0.05 m. Plastic accounts up most of the macro marine litter collected (73.8%), followed by glass (12%), fabric (7.8%), rubber (4.4%), wood (2%), and metal (0.07%). Between 2018 and 2020, the overall weight of macroplastic (>5 mm) litter and the amount of microplastic (<5 mm) litter on northern beaches were 80.371 g/m2 and 11.094 g/m3, respectively. In this investigation, macroplastic collected on the beach surface ranged from 0.02 g to 14.09 g/m2, while microplastic in the beach sediment ranged from 0 to 1.192 g/m3. The packaging category seems to have the highest percentage of collected macroplastic. At the 95% confidence level, the calculated R2 of 0.7444 indicates a substantial association between macroplastic and microplastic. The linear regression equation is y = 0.1927x + 0.0226, with y representing microplastic (g/m3) and x being macroplastic (g/m2). This strong link demonstrates that the presence of microplastic in sediment is strongly related to the abundance of macroplastic on the beach. This finding provides a good approximation of actual microplastic occurrence to macroplastic abundance, which will be useful in environmental evaluation and management approaches.

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A study on Hydrogen Sulphide as potential tracer in landfill gas monitoring

2013 , Tengku Nuraiti Tengku Izhar , Zaity Syazwani Mohd Odli , Irnis Azura Zakarya , Farah Naemah Mohd Saad , Tan Ley Binn , Roshazita Che Amat , Norlia Mohamad Ibrahim

Municipal solid waste (MSW) landfills are one of the major source of hydrogen sulphide (H2S) which is the offensive odours potentially creating annoyance in adjacent communities. This project focuses on H2S emission from landfills in Perlis, Malaysia. Landfill gas (LFG) samples were collected and analyzed accordance with NIOSH method 6013. The mean concentrations of H2S in Kuala Perlis Landfill and Padang Siding Landfill are 210.68 ppm and 242.85 ppm respectively. High concentrations of H2S may be a concern for employees working on the landfill site. These results indicate that workers should use proper personal protection at landfill when involved in excavation, landfill gas collection, and refuse compaction. The formation of H2S most likely to be contributed by the biological conversion of sulfate from gypsum-rich soils and landfill wastewater treatment sludges by sulfate-reducing bacteria (SRB) which can utilize dissolved sulfate as an electron acceptor. H2S is conveniently detected by hand held analyzer, such Jerome meter, landfill gas analyzer. In the organic range, in the ease of detection range in the dispersion rate within the landfill site, the monitored H2S gas form a very noticeable concentration with the travelling wind direction. It proved that the dispersion rate of H2S are suitable as tracer to detect route of travelling in a certain distance.

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