Utilization of Coal Fly Ash from Power Plant for Zeolite Synthesis
<p align="justify">Fly ash is a coal combustion residue that consist of crystalline substances such as quartz and mullite as well as amorphous substances such as aluminosilicate and other minerals. Aluminosilicate components from the fly ash may have a potential to be used as a raw m...
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id-itb.:274562018-05-28T09:00:08ZUtilization of Coal Fly Ash from Power Plant for Zeolite Synthesis PALWAGUNA (NIM : 13014094), METI FATMAWATI (NIM : 13014096) , GANJAR Indonesia Final Project INSTITUT TEKNOLOGI BANDUNG https://digilib.itb.ac.id/gdl/view/27456 <p align="justify">Fly ash is a coal combustion residue that consist of crystalline substances such as quartz and mullite as well as amorphous substances such as aluminosilicate and other minerals. Aluminosilicate components from the fly ash may have a potential to be used as a raw material for synthesizing zeolites. In this experiment, zeolite A which is often used as an adsorbent was synthesized from coal fly ash by using alkali-fusion hydrothermal method. <br /> <br /> This method of synthesizing zeolite A from coal fly ash consists of two steps, which are pretreatment and main experiment. The pretreatment steps of coal fly ash are calcination of fly ash samples at 850°C for one hour prior to washing of the samples by using HCl 3M at 90°C for one hour. The main experiment consist of two substeps, which are fusion reaction between NaOH and pretreated fly ash at 550°C for two hours prior to hydrothermal step at 90°C for two hours. This experiment used fly ash/NaOH ratio of 1,0 and 1,4; ratio of addition of NaAlO2 of 0,75 an 1,25 to manipulate Si/Al ratio; and aging time of 8 and 24 hours. Zeolite A product was then characterized by XRD, XRF, SEM, BET, and AAS to determine the quality of the products. <br /> <br /> This experiment shows that the pretreatment of coal fly ash by calcination yield to the decreasement of magnetite (Fe3O4) which was converted to hematite (Fe2O3). XRF results also showed that HCl washing reduces the impurity from coal fly ash such as hematite (from 40,2% to 17,3%) and CaO (from 25,2% to 4,48%). Zeolite A that was synthesized have high crystallinity, around 98%, with specific area varies from 19,64—195,82 m2/g. The highest specific area of zeolite A resulted from ratio of fly ash/NaOH of 1,4; ratio of NaAl2/fly ash of 0,75; and aging time of 8 hours. AAS analysis showed that all of the zeolite A that was synthesized able to reduce 99% of Cu2+ which means that the zeolite A is applicable to be used as adsorbent. <p align="justify"> <br /> <br /> text |
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<p align="justify">Fly ash is a coal combustion residue that consist of crystalline substances such as quartz and mullite as well as amorphous substances such as aluminosilicate and other minerals. Aluminosilicate components from the fly ash may have a potential to be used as a raw material for synthesizing zeolites. In this experiment, zeolite A which is often used as an adsorbent was synthesized from coal fly ash by using alkali-fusion hydrothermal method. <br />
<br />
This method of synthesizing zeolite A from coal fly ash consists of two steps, which are pretreatment and main experiment. The pretreatment steps of coal fly ash are calcination of fly ash samples at 850°C for one hour prior to washing of the samples by using HCl 3M at 90°C for one hour. The main experiment consist of two substeps, which are fusion reaction between NaOH and pretreated fly ash at 550°C for two hours prior to hydrothermal step at 90°C for two hours. This experiment used fly ash/NaOH ratio of 1,0 and 1,4; ratio of addition of NaAlO2 of 0,75 an 1,25 to manipulate Si/Al ratio; and aging time of 8 and 24 hours. Zeolite A product was then characterized by XRD, XRF, SEM, BET, and AAS to determine the quality of the products. <br />
<br />
This experiment shows that the pretreatment of coal fly ash by calcination yield to the decreasement of magnetite (Fe3O4) which was converted to hematite (Fe2O3). XRF results also showed that HCl washing reduces the impurity from coal fly ash such as hematite (from 40,2% to 17,3%) and CaO (from 25,2% to 4,48%). Zeolite A that was synthesized have high crystallinity, around 98%, with specific area varies from 19,64—195,82 m2/g. The highest specific area of zeolite A resulted from ratio of fly ash/NaOH of 1,4; ratio of NaAl2/fly ash of 0,75; and aging time of 8 hours. AAS analysis showed that all of the zeolite A that was synthesized able to reduce 99% of Cu2+ which means that the zeolite A is applicable to be used as adsorbent. <p align="justify"> <br />
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Final Project |
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PALWAGUNA (NIM : 13014094), METI FATMAWATI (NIM : 13014096) , GANJAR |
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PALWAGUNA (NIM : 13014094), METI FATMAWATI (NIM : 13014096) , GANJAR Utilization of Coal Fly Ash from Power Plant for Zeolite Synthesis |
author_facet |
PALWAGUNA (NIM : 13014094), METI FATMAWATI (NIM : 13014096) , GANJAR |
author_sort |
PALWAGUNA (NIM : 13014094), METI FATMAWATI (NIM : 13014096) , GANJAR |
title |
Utilization of Coal Fly Ash from Power Plant for Zeolite Synthesis |
title_short |
Utilization of Coal Fly Ash from Power Plant for Zeolite Synthesis |
title_full |
Utilization of Coal Fly Ash from Power Plant for Zeolite Synthesis |
title_fullStr |
Utilization of Coal Fly Ash from Power Plant for Zeolite Synthesis |
title_full_unstemmed |
Utilization of Coal Fly Ash from Power Plant for Zeolite Synthesis |
title_sort |
utilization of coal fly ash from power plant for zeolite synthesis |
url |
https://digilib.itb.ac.id/gdl/view/27456 |
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1822021340919496704 |