Research Output
The modified phase inversion and sintering technique for fabrication of ceramic membrane: Influence of kaolin composition and drying temperature
Potential Impact of Climate Change on Hydropower System in Malaysia
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Publication
The practical use of ceramic membrane has been limited by their fabrication technique and brittleness. Nowadays, phase inversion and sintering technique for ceramic membrane fabrication has been received widely attention. However, the unavoidable unstable structure for fabrication of flat-sheet ceramic membrane using this technique is still becoming an issue. To overcome this problem, in this paper, flat-sheet ceramic membrane have been developed via modified phase inversion and sintering technique using kaolin as main ceramic material, polyethersulfone (PESf) as the polymeric binder and N-methylpyyrolidone (NMP) as the solvent, respectively. The modified phase inversion has been done by adding drying process before the immersion into solvent. The influence of kaolin composition (60-80g) and drying temperature (room temperature and 3oC) have been investigated extensively to optimize the preparation. The results showed that the ceramic membrane prepared at 80g kaolin composition with drying temperature of 3oC displayed the highest bending strength of 53.1g with excellent BSA and humic acid rejection. Therefore, this study proved that the problem of unstable fabrication technique for flat-sheet ceramic membrane can be solved via modified phase inversion through the influence of high composition and low drying temperature.
Publication
Hydropower emerged as the predominant renewable source, constituting 83.3 % of the overall renewable electricity generated and contributing to 15.9 % of the total electricity output in Malaysia. The adverse effects of climate change, including extreme temperature and precipitation events, pose challenges to the performance and infrastructure of the hydropower plant. The main objective of this research is to investigate the potential ramifications of climate change on hydropower generation in Malaysia, with a particular emphasis on the projected impacts of temperature and precipitation changes. Data from ClimateAP software using global climate models are used to estimate the percentage changes in annual average temperature by 2070 under high emissions scenarios in comparison to baseline data from the end of the 20th century. The heat map was used to show the projected maximum temperature and precipitation across Malaysia under the Radiative Concentration Pathways 8.5 scenario. The hydraulic power generated formula was modified to determine the relationship between climate change and power generation. The findings reveal that an increase in temperature reduces power generation while an increase in precipitation increases energy production. Enhancements, additional analysis, and validation of these findings would help mitigate climate change and provide valuable insight into hydropower systems.