Water

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A baseline study of tropical coastal water quality in Port Dickson, Strait of Malacca, Malaysia
(Elsevier, 2013) Sarva Mangala Praveena; Ahmad Zaharin Aris
Tidal variation in tropical coastal water plays an important role on physicochemical characteristics and nutrients concentration. Baseline measurements were made for nutrients concentration and physicochemical properties of coastal water, Port Dickson, Malaysia.
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A Comparative Review on Malaysia's Water Quality Index Model with International Water Quality Index Models for Surface Water Quality Classification
(IOP Publishing, 2023) Y Q Liang; E L Yong; K V Annammala; K Bidin; A Nainar; L S Mazilamani; N A Mohamad
This paper aims at comparing the advantages and the limitations across several different types of WQI models (CCMEWQI, NSFWQI, IWQI, WQI Malaysia), in order to provide suggestions to improve the accuracy and sensitivity of the WQI models. IWQI and CCMEWQI are fully unbiased due to no weightage, however, statistical technique is recommended to be included in parameter selection step to increase its accuracy.
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A GIS-based linear regression modeling approach to assess the impact of geologic rock types on groundwater recharge and its hydrological implication
(Springer, 2019) Kehinde Anthony Mogaji; Hwee San Lim
In this study, the efficacy of the linear regression modeling technique in the company of recharge rate-induced geophysical parameters was implemented through geographical information system to establish the essentiality of geology factor in recharge rate estimate and prediction.
Open Access
A GIS-based water quality model for sustainable tourism planning of Bertam River in Cameron Highlands, Malaysia
(Springer, 2015) Mansir Aminu; Abdul-Nassir Matori; Khamaruzaman Wan Yusof; Amirhossein Malakahmad; Rosilawati Binti Zainol
Cameron Highlands is experiencing rapid development as a popular tourist destination in Malaysia. This causes a rapid boost in construction and other tourism-related activities, such as the growth of vegetables, fruits and flowers. Due to that, the water quality of rivers in the highlands has been adversely affected. In this study, Bertam River, as one of the main streams in Cameron Highlands, was monitored to assess its suitability for recreational activities and conservation. Seven sampling points were selected in the river and tributaries: dissolved oxygen, biochemical and chemical oxygen demands (BOD and COD), total suspended solids (TSS), ammonia nitrate (NH3-N) and pH were measured and the water quality index (WQI) was computed during high and average water flow.
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A half-century record of coral skeletal P/Ca reveals late 20th century nutrient pollution in Port Dickson, Malaysia
(Elsevier, 2022) Chen Mengli; Chia Hao Kai; Patrick Martin; Jen Nie Lee; Ryan P.A. Bettens; Jani T.I. Tanzil
Anthropogenic nutrient pollution has been identified as one of the key stressors of coastal ecosystems. However, the paucity of long-term nutrient records limits our understanding of both the extent of nutrient pollution as well as of the ecological impacts. Here, using coral skeletal phosphorus (P/Ca), we reconstructed a half-a-century record of seawater phosphate at Port Dickson, Malaysia.
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A multidimensional approach for microplastics monitoring in two major tropical river basins, Malaysia
(Elsevier, 2023) Sabiqah Tuan Anuar; Nor Salmi Abdullah; Nasehir Khan E.M Yahya; Teen Teen Chin; Ku Mohd Kalkausar Ku Yusoff; Yuzwan Mohamad; Alyza Azzura Azmi; Maisarah Jaafar; Noorlin Mohamad; Wan Mohd Afiq Wan Mohd Khalik; Yusof Shuaib Ibrahim
Microplastics (MPs) with the size of 1 µm–5 mm are pollutants of great concern ubiquitously found in the environment. Existing efforts have found that most of the MPs present in the seas mainly originated from land via riverine inputs. Asian rivers are known to be among the top in microplastic emissions. However, field data are scarce, especially in Malaysia. This study presents the distribution and characteristics of MPs in the surface water of two major river basins of Malaysia, namely Langat River (West Coast/Straits of Malacca) and Kelantan River (East Coast/South China Sea). Water samples were collected at 21–22 locations in Kelantan and Langat rivers, covering the river, estuary and sea.
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A new soft computing model for daily streamflow forecasting
(Springer, 2021) Saad Sh. Sammen; Mohammad Ehteram; S. I. Abba; R. A. Abdulkadir; Ali Najah Ahmed; Ahmed El-Shafie
The ability to forecast streamflow is crucial, as it can help mitigate flood risks. Long-term stream flow data records are needed for hydropower plant construction, flood prediction, watershed management, and long-term water supply use. An accurate assessment of streamflow is considered as very challenging and critical tasks. A new predicting model is developed in this research, combining the technique of sunflower optimization (SFA) as an evolutionary algorithm with the multi-layer perceptron (MLP) algorithm to predict streamflow in Malaysia's Jam Seyed Omar (JSO) and Muda Di Jeniang (MDJ) stations.
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A preliminary geochemical study on Manukan Island, Sabah
(Universiti Malaysia Sabah, 1997) Mohd. Harun Abdullah; Baba Musta; Mohamad Md. Tan
The study was carried out to determine the geochemical elements in the soil and groundwater in Manukan Island, Sabah.
Open Access
A preliminary study of the distribution of selected trace metals in the Besut River Basin, Terengganu, Malaysia
(Springer, 2008) S. Suratman; H. C. Hang; N. A. M. Shazili; N. Mohd Tahir
This paper presents a preliminary result carried out in the Besut River basin, Terengganu, Malaysia to determine the selected trace metal concentrations.
Open Access
A Review: Removal of Sediment in Water Reservoir by using Siphon
(IOP Publishing, 2021) W N Rizzuan; Mohd Remy Rozainy Mohd Arif Zainol; Mahyun Ab Wahab; Choong Wee Kang; Ikhsan Setiawan
This paper provides a framework to understand deeply the principles of siphon and to improve the design of the siphon to remove the sediment in reservoir.
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A Scientometric Review of The Impacts of Global Climate Change Towards Marine Biodiversity Research: The Rise and Progress
(IOP Publishing, 2022) Mohamad Nor Azra; Mohd Iqbal Mohd Noor; Nadiah Wan Rasdi; Mazlan Abd Ghaffar
The current study aimed to give an overview on the impact of climate change towards global marine biodiversity and ecosystem services. A scientometric methodology was implemented using the Web of Science (WoS) Core Collection database for the period from January 1970 to May 2021.
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A study of the Ampang landfill leachate characteristics and its effects on river water quality parameters
(Universiti Malaya, 2003) Fatimah Kamal Batcha; P. Agamuthu; Shaliza Ibrahim
Physical and inorganic parameters have been measured for leachate from the Ampang Municipal Landfill before and after the landfill was closed. Although there were significant reduction in the parameter concentrations after the landfill closure, the COD value was still 20 times higher than the requirement of EQA 1974 Standard A. BOD, TSS, Fe, Mg, Cd and Pb were also higher than the Standards requirements after closure. The effects of leachate seeping into the Michu River, have been investigated through analyses of water samples taken along the Michu and Langat Rivers up to the Puncak Niaga Langat River water intake point.
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A study on the activity concentration of Po-210 in the marine environment of the Kapar coastal area
(Universiti Kebangsaan Malaysia, 2011) Lubna A.; Nik Azlin N. A.; Afiza Suriani S.; Mohamed, C.A.R
The distribution of a natural radionuclide (Po-210) in seawater, total suspended solid (TSS), sediment and marine organisms was quantified using alpha spectrometry at the coastal area of Kapar, Malaysia. It was observed that the Po-210 activity in TSS was much higher than that of water and sediment samples.
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A two-band algorithm for total suspended solid concentration mapping using THEOS data
(Coastal Education & Research Foundation, Inc., 2013) H.S. Lim; M.Z. MatJafri; K. Abdullah; R. Asadpour
Environmental monitoring through the method of traditional ship sampling is time consuming and requires a high survey cost. This study was carried out to investigate the relationship between total suspended solids (TSS) and satellite THEOS data by using a calibrated algorithm. The study area is the seawater region around Penang Island, Malaysia. Water-quality TSS values were collected simultaneously during the acquisition of the satellite imagery and later analyzed in the laboratory.
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Abundance and distribution of microplastics in tropical estuarine mangrove areas around Penang, Malaysia
(Frontiers Media S.A., 2023) Evonne Tan; Norlaila Binti Mohd Zanuri
Our study aims to provide a basic understanding on the abundance of MPs present in mangrove estuaries around Penang and assess the extent of its pollution. We are interested to see whether the influence of anthropogenic activities coincides with the severity of MP pollution of the study sites. Our study also aims to provide meaningful data that can be used for pollution management and control. Furthermore, we aim to narrow the knowledge gap on MP pollution in Malaysiathat will encourage mitigation efforts in the near future.
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Accumulation and risk assessment of heavy metals employing species sensitivity distributions in Linggi River, Negeri Sembilan, Malaysia
(Elsevier, 2021) Muhammad Raznisyafiq Razak; Ahmad Zaharin Aris; Nurul Amirah Che Zakaria; Sze Yee Wee; Nur Afifah Hanun Ismail
The constant increase of heavy metals into the aqueous environment has become a contemporary global issue of concern to government authorities and the public. The study assesses the concentration, distribution, and risk assessment of heavy metals in freshwater from the Linggi River, Negeri Sembilan, Malaysia. Species sensitivity distribution (SSD) was utilised to calculate the cumulative probability distribution of toxicity from heavy metals. The aquatic organism's toxicity data obtained from the ECOTOXicology knowledgebase (ECOTOX) was used to estimate the predictive non-effects concentration (PNEC).
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An assessment of sediment and nitrogen input into the upper Merbok estuary, Kedah, Malaysia
(Springer, 2015) Wan Ruslan Ismail; Mohd Nazrul Ibrahim
The increased loss of nutrients via agricultural runoff has serious potential ecological and public health implications. This paper discusses water quality and nutrient inputs into Merbok river in Northern Malaysia.
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An integrated toolkit using multiple methods for determining the potential sources of iron and manganese in groundwater: a case study from the lower Kelantan River Basin, Malaysia
(Springer, 2021) Usman Abdullahi Usman; Ismail Yusof; Muggundha Raoov; Yatimah Alias; Jonathan Hodgkinson; Nurzaidi Abdullah
The application of thin-section petrography, field emission scanning electron microscopy and energy dispersive X-ray analysis (FESEM–EDX), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), thermo-analysis, and laser Raman spectral analysis methods can be combined to characterize iron-ores and distinguish clay minerals in alluvial soils. The integrated methodology developed for this work provides the basis for a generic mineral characterization toolkit. Five main alluvial soil types have been defined in the upper layer of the lower Kelantan Basin, Malaysia: sand with low clay content, clay sand, sandy clay, mottled clay, and mud-sand.
Open Access
An overview of groundwater chemistry studies in Malaysia
(Springer, 2015) Nura Umar Kura; Mohammad Firuz Ramli; Wan Nor Azmin Sulaiman; Shaharin Ibrahim; Ahmad Zaharin Aris
In this paper, numerous studies on groundwater in Malaysia were reviewed with the aim of evaluating past trends and the current status for discerning the sustainability of the water resources in the country.
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Analisis pengoptimuman sarian air bawah tanah akuifer berpasir di pulau
(Universiti Malaysia Sabah, 2003) Mohd Harun Abdullah
Kajian ini dijalankan untuk mencari pendekatan yang boleh membantu menglak kemasukan air laut ke dalam akuifer dan pengoptimuman sarian air bawah tanah si sesuatu tempat dan di dalam keadaan tertentu.