臺灣國際科展

Sustainable G-Polymer From Industrial Waste

科展類別
臺灣國際科展作品
屆次
2021年
科別
化學
學校名稱
SMK SERI DAMAI
指導老師
MOHD FAKHARUDIN BIN MAHMOD
作者
NUR FATIMA BT. FARUVASH KHAN;MUHAMMAD LUQMANUL HAKIM BIN AZYME
關鍵字
Geopolymer、paper sludge ash compression test

摘要或動機

This study focuses on the pre-treatment of paper sludge ash (PSA) as a by-product of paper milling industry that contains high amount of calcium, yet low in silica. The presence of high calcium content in geopolymer system will accelerate the setting time of fresh geopolymer and may disrupt the development of its mechanical strength. Therefore, in this study, the refinement of PSA properties was conducted by treating raw PSA in hydrochloric acid solution with different molarities of 0.5 M, 1.0 M and 2.0 M. The pre-treatment process was mainly purposed to decrease the amount of calcium and other impurities through leaching mechanism. Based on the experimental results, 2.0 M hydrochloric acid solution (HCl) was determined as the optimum concentration due to its ability in removing higher amount of calcium from the ash, yet still able to increase the amount of silica. Compression test on the hardened properties of geopolymer specimen also showed the deceleration of fresh fly ash based geopolymer and produced a more workable fresh geopolymer.


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TISF2021-030030.pdf 974 KB Adobe Reader(Pdf)檔案