Abstract
In this study, particle size distribution and zeta potential of the suspended particles in municipal water and lake surface water of Curtin Sarawak's lake were compared and the samples were analysed using dynamic light scattering method. High concentration of suspended particles affects the water quality as well as suppresses the aquatic photosynthetic systems. A new approach has been carried out in the current work to determine the particle size distribution and zeta potential of the suspended particles present in the water samples. The results for the lake samples showed that the particle size ranges from 180nm to 1345nm and the zeta potential values ranges from -8.58 mV to -26.1 mV. High zeta potential value was observed in the surface water samples of Curtin Sarawak's lake compared to the municipal water. The zeta potential values represent that the suspended particles are stable and chances of agglomeration is lower in lake water samples. Moreover, the effects of physico-chemical parameters on zeta potential of the water samples were also discussed.
Highlights
Surface water and ground water are important components in the environment for the fresh water resources
The zeta potential values represent that the suspended particles are stable and chances of agglomeration is lower in lake water samples
The lake water samples contain smaller suspended particles and their zeta potential discloses that the suspended particles have less chances of agglomeration
Summary
Surface water and ground water are important components in the environment for the fresh water resources. Photosynthetic activity of phytoplankton’s and other primary producers in the aquatic environment commonly occurs in the surface water bodies [1, 2] These planktons are the main source of food for aquatic organisms [3]. In-situ decomposition of suspended particle with high organic content can depletes dissolved oxygen levels in water. This process will lead to a critical oxygen shortage in surface water bodies that will affect the life of aquatic organisms [17]. Particle size distribution and zeta potential of the suspended particles in municipal water and surface water of Curtin Lake, Miri, East Malaysia was compared and analyzed using dynamic light scattering technique. The tap water was supplied by local municipal authority and the drinking water was purified by Curtin University water treatment facility
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