Pub Date : 2024-03-01DOI: 10.24114/ijcst.v7i1.56442
Jamius Bin Stepanus, D. Kolibongso
The aim of this research is to determine the potential of biodiesel from the algae Sargassum binderi from the North Coast of Manokwari by determining the lipid components contained in the algae. Lipid extraction was carried out using the soxhletation method with n-hexane solvent. Lipid percentage was determined via GCMS analysis. The research results obtained 4 lipid components consisting of hexadecanoic acid (palmitic acid), 9,12-hexadecadienoic acid, 9-octadecenoic acid (Z) (oleic acid) and octadecanoic acid (stearic acid) with a percentage of 18.12%, 4.75%, 19.4% and 4.29% respectively. The total percentage of lipid components extracted was 46.56%, almost half of the total extract.
{"title":"Exploration of Lipid Content in Sargassum binderi Algae from the North Coast of Manokwari West Papua","authors":"Jamius Bin Stepanus, D. Kolibongso","doi":"10.24114/ijcst.v7i1.56442","DOIUrl":"https://doi.org/10.24114/ijcst.v7i1.56442","url":null,"abstract":"The aim of this research is to determine the potential of biodiesel from the algae Sargassum binderi from the North Coast of Manokwari by determining the lipid components contained in the algae. Lipid extraction was carried out using the soxhletation method with n-hexane solvent. Lipid percentage was determined via GCMS analysis. The research results obtained 4 lipid components consisting of hexadecanoic acid (palmitic acid), 9,12-hexadecadienoic acid, 9-octadecenoic acid (Z) (oleic acid) and octadecanoic acid (stearic acid) with a percentage of 18.12%, 4.75%, 19.4% and 4.29% respectively. The total percentage of lipid components extracted was 46.56%, almost half of the total extract.","PeriodicalId":13519,"journal":{"name":"Indonesian Journal of Chemical Science and Technology (IJCST)","volume":"78 20","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140087004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-03-01DOI: 10.24114/ijcst.v7i1.56441
R. Namira, Atha Nissa
One of the most widely used complimentary bath products is lavender bath bomb, which has a pleasant scent, a foamy feel, and a relaxing effect. This is a chance to expand the production of bath bombs. The manufacture of lavender bath bombs on a large scale (industry) can be done using a continuous stirred tank reactors (CSTRs). This research aims to design a reactor to react the raw materials of lavender bath bomb through mixing reaction. The method used is by conducting computational analysis and calculation of the reactor and its stirrer and mass balance as the basis for calculation using Microsoft Excel. According to the computation results, the examined reactor needs one stirrer with a power of 141 horsepower and a total volume of 7.2334 ft3 with a height of 27.1045 in. These computational and analytical results can describe the production system using the reactor as a learning tool.
薰衣草浴霸是使用最广泛的免费沐浴产品之一，它气味宜人，泡沫丰富，具有放松身心的效果。这是一个扩大浴霸生产的机会。使用连续搅拌罐反应器（CSTR）可以大规模（工业化）生产薰衣草浴霸。本研究旨在设计一种反应器，通过混合反应对薰衣草浴霸的原材料进行反应。采用的方法是使用 Microsoft Excel 对反应器及其搅拌器进行计算分析和计算，并以质量平衡作为计算基础。根据计算结果，所研究的反应器需要一个功率为 141 马力的搅拌器，总容积为 7.2334 立方英尺，高度为 27.1045 英寸。这些计算和分析结果可以描述将反应器作为学习工具的生产系统。
{"title":"Type Design of Continuous Stirred Tank Reactors (CSTRs) for Bath Bomb Lavender Production","authors":"R. Namira, Atha Nissa","doi":"10.24114/ijcst.v7i1.56441","DOIUrl":"https://doi.org/10.24114/ijcst.v7i1.56441","url":null,"abstract":"One of the most widely used complimentary bath products is lavender bath bomb, which has a pleasant scent, a foamy feel, and a relaxing effect. This is a chance to expand the production of bath bombs. The manufacture of lavender bath bombs on a large scale (industry) can be done using a continuous stirred tank reactors (CSTRs). This research aims to design a reactor to react the raw materials of lavender bath bomb through mixing reaction. The method used is by conducting computational analysis and calculation of the reactor and its stirrer and mass balance as the basis for calculation using Microsoft Excel. According to the computation results, the examined reactor needs one stirrer with a power of 141 horsepower and a total volume of 7.2334 ft3 with a height of 27.1045 in. These computational and analytical results can describe the production system using the reactor as a learning tool.","PeriodicalId":13519,"journal":{"name":"Indonesian Journal of Chemical Science and Technology (IJCST)","volume":"117 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140088280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-03-01DOI: 10.24114/ijcst.v7i1.56444
Astri Aulia Savitri, Wilda Amananti, Joko Santoso
One metal that is widely researched is silver (Ag) which can be used as an antibacterial and antifungal. The method that is widely developed is the biological method, also called biosynthesis. Biosynthesis is a synthesis method using media from plant extracts. This research was conducted to determine the best formulation of Ag nanoparticle soap from turi (sesbania grandiflora) leaf extract based on its stability test. To obtain turi leaf extraction using the infusion method, a flavonoid compound test was carried out to determine the flavonoid compound content. After knowing the existence of flavonoid compounds, the wavelength was determined using UV-Vis Spectrophotometry. In the nanoparticle soap formula, a nanoparticle soap preparation was made which was then tested for the physical quality of Ag nanoparticle soap from turi leaf extract (Sesbania Grandiflora L). The gel-shaped preparation has a characteristic oleum rosae odor and a yellow to blackish soap color. Test the homogeneity to see if there are coarse grains on the surface of the soap. The specific gravity test results of all soap formulations meet the criteria for good soap. The high foam value in soap preparations is between 6.1 – 12.5 mM. The results of measuring the absorption values for concentrations of 1 mM, 2 mM, and 3 mM show that the optimum absorption results in liquid soap preparations are a concentration of 3 mM with a wavelength of 300 nm with an absorbance value of 1.105. The research results showed that turi leaf extract (sesbania grandiflora L) had an effect on the physical stability of Ag nanoparticle soap and met the standards set by SNI. Among formulation 1 with a concentration of 0.03, formulation II with a concentration of 0.06 and formulation III with a concentration of 0.09, the turi leaf extract soap preparation showed the best physical properties in formulation 1 with a concentration of 0.03 in the pH stability test.
{"title":"Formulation dan Phyical Stability Test Of Turi Leaf Extract (Sesbania grandiflora L.) Silver Nanoparticle Soap","authors":"Astri Aulia Savitri, Wilda Amananti, Joko Santoso","doi":"10.24114/ijcst.v7i1.56444","DOIUrl":"https://doi.org/10.24114/ijcst.v7i1.56444","url":null,"abstract":"One metal that is widely researched is silver (Ag) which can be used as an antibacterial and antifungal. The method that is widely developed is the biological method, also called biosynthesis. Biosynthesis is a synthesis method using media from plant extracts. This research was conducted to determine the best formulation of Ag nanoparticle soap from turi (sesbania grandiflora) leaf extract based on its stability test. To obtain turi leaf extraction using the infusion method, a flavonoid compound test was carried out to determine the flavonoid compound content. After knowing the existence of flavonoid compounds, the wavelength was determined using UV-Vis Spectrophotometry. In the nanoparticle soap formula, a nanoparticle soap preparation was made which was then tested for the physical quality of Ag nanoparticle soap from turi leaf extract (Sesbania Grandiflora L). The gel-shaped preparation has a characteristic oleum rosae odor and a yellow to blackish soap color. Test the homogeneity to see if there are coarse grains on the surface of the soap. The specific gravity test results of all soap formulations meet the criteria for good soap. The high foam value in soap preparations is between 6.1 – 12.5 mM. The results of measuring the absorption values for concentrations of 1 mM, 2 mM, and 3 mM show that the optimum absorption results in liquid soap preparations are a concentration of 3 mM with a wavelength of 300 nm with an absorbance value of 1.105. The research results showed that turi leaf extract (sesbania grandiflora L) had an effect on the physical stability of Ag nanoparticle soap and met the standards set by SNI. Among formulation 1 with a concentration of 0.03, formulation II with a concentration of 0.06 and formulation III with a concentration of 0.09, the turi leaf extract soap preparation showed the best physical properties in formulation 1 with a concentration of 0.03 in the pH stability test.","PeriodicalId":13519,"journal":{"name":"Indonesian Journal of Chemical Science and Technology (IJCST)","volume":"67 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140085197","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-31DOI: 10.24114/ijcst.v6i2.49373
Nurul Arista, R. Siregar
Barangan banana (Musa acuminata linn) is also called Medan banana which is often found in North Sumatra. Banana peels are known to contain phenolic compounds that have potential as antioxidants. This study aims to determine the antioxidant activity of raw and ripe banana peel extract of Barangan banana (Musa acuminata linn) using the DPPH (1,1-diphenyl-2-pikrihidrazil) method. The data obtained was calculated to determine the antioxidant activity. The results showed that the antioxidant activity of the ethanol extract of Barangan raw banana peel IC50 = 32,52 μg/mL, the ethanol extract of Barangan ripe banana peel IC50 = 83,60 μg/mL, and the vitamin C comparator obtained an IC50 value of 5,00. Raw banana peel extract has higher antioxidant activity than ripe banana peel extract.
{"title":"Antioxidant Activity Test of Barangan Banana Peel (Musa Acuminata Linn) Etanol Extract With DPPH Method","authors":"Nurul Arista, R. Siregar","doi":"10.24114/ijcst.v6i2.49373","DOIUrl":"https://doi.org/10.24114/ijcst.v6i2.49373","url":null,"abstract":"Barangan banana (Musa acuminata linn) is also called Medan banana which is often found in North Sumatra. Banana peels are known to contain phenolic compounds that have potential as antioxidants. This study aims to determine the antioxidant activity of raw and ripe banana peel extract of Barangan banana (Musa acuminata linn) using the DPPH (1,1-diphenyl-2-pikrihidrazil) method. The data obtained was calculated to determine the antioxidant activity. The results showed that the antioxidant activity of the ethanol extract of Barangan raw banana peel IC50 = 32,52 μg/mL, the ethanol extract of Barangan ripe banana peel IC50 = 83,60 μg/mL, and the vitamin C comparator obtained an IC50 value of 5,00. Raw banana peel extract has higher antioxidant activity than ripe banana peel extract.","PeriodicalId":13519,"journal":{"name":"Indonesian Journal of Chemical Science and Technology (IJCST)","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76147731","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-31DOI: 10.24114/ijcst.v6i2.49368
Rahma Hidayah, D. Kurniawati, Alizar Alizar
Pumice is often found around the banks of rivers, this stone is a type of igneous rock formed from volcanic eruptions. One of the compounds contained in pumice is silica. Therefore, the synthesis of silica nanoparticles from pumice using the sol gel method was used because it is simpler and more efficient in terms of cost and processing time. the initial step was by reacting pumice powder and NaOH at 70°C - 80°C then synthesized by adding 2M HCI to form a gel or white precipitate, soaking in ethanol, teos, hexane solutions was then synthesized to become an aerogel. Silica synthesis results into silica aerogels were characterized by FTIR and XRF. From FTIR silanol and siloxane functional groups were found, and the SiO2 composition increased to 93,299% after synthesis.
{"title":"Characterization of Silica Nanoparticles from Pumice as an Aerogel Adsorbent","authors":"Rahma Hidayah, D. Kurniawati, Alizar Alizar","doi":"10.24114/ijcst.v6i2.49368","DOIUrl":"https://doi.org/10.24114/ijcst.v6i2.49368","url":null,"abstract":"Pumice is often found around the banks of rivers, this stone is a type of igneous rock formed from volcanic eruptions. One of the compounds contained in pumice is silica. Therefore, the synthesis of silica nanoparticles from pumice using the sol gel method was used because it is simpler and more efficient in terms of cost and processing time. the initial step was by reacting pumice powder and NaOH at 70°C - 80°C then synthesized by adding 2M HCI to form a gel or white precipitate, soaking in ethanol, teos, hexane solutions was then synthesized to become an aerogel. Silica synthesis results into silica aerogels were characterized by FTIR and XRF. From FTIR silanol and siloxane functional groups were found, and the SiO2 composition increased to 93,299% after synthesis.","PeriodicalId":13519,"journal":{"name":"Indonesian Journal of Chemical Science and Technology (IJCST)","volume":"93 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80015422","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-31DOI: 10.24114/ijcst.v6i2.49375
Rissah Maulina, R. Selly, H. Nasution, Jasmidi Jasmidi, M. Zubir, Siti Rahmah, P. Faradilla
This study aims to determine the stages in the process of making activated carbon, synthesis of porous polymer composites Cu(TAC) and activated carbon composites (KA-Cu(TAC) for adsorption of dissolved ammonia (NH4OH). To know the characterization results of activated carbon and KA- Cu(TAC), as well as knowing the optimum mass, concentration, and contact time of activated carbon KA-Cu(TAC) for the adsorption of dissolved ammonia. The research stages started from Empty Oil Palm Bunches (EFB) used as biosorbents for carbon production at 500oC. The resulting product was activated with H3PO4, then modified with porous polymer Cu(TAC) to make a composite. The KA-Cu(TAC) composite was synthesized by reflux method. Then MOFs, activated carbon and KACu(TAC) composite were characterized by BET. The BET characterization results showed that the successfully synthesized KA-Cu(TAC) composite experienced an increase in surface area.In the NH4OH adsorption process the optimum mass efficiency on activated carbon still increased at 8 grams while the KA-Cu(TAC) composite obtained an efficiency of 36, 6% and optimally at a mass of 4 g. At variations in concentration, the efficiency of the two samples still decreased. And the optimum time efficiency obtained in the NH4OH adsorption process with activated carbon was 70% and the KA-Cu(TAC) composite was 86.6%, both samples were equally optimal at 75 minutes.
{"title":"Adsorption Of Soluble Ammoniac Using A Porous Polymer Composite Cu-(TAC) And Activated Carbon Empty Fruit Palm Oil","authors":"Rissah Maulina, R. Selly, H. Nasution, Jasmidi Jasmidi, M. Zubir, Siti Rahmah, P. Faradilla","doi":"10.24114/ijcst.v6i2.49375","DOIUrl":"https://doi.org/10.24114/ijcst.v6i2.49375","url":null,"abstract":"This study aims to determine the stages in the process of making activated carbon, synthesis of porous polymer composites Cu(TAC) and activated carbon composites (KA-Cu(TAC) for adsorption of dissolved ammonia (NH4OH). To know the characterization results of activated carbon and KA- Cu(TAC), as well as knowing the optimum mass, concentration, and contact time of activated carbon KA-Cu(TAC) for the adsorption of dissolved ammonia. The research stages started from Empty Oil Palm Bunches (EFB) used as biosorbents for carbon production at 500oC. The resulting product was activated with H3PO4, then modified with porous polymer Cu(TAC) to make a composite. The KA-Cu(TAC) composite was synthesized by reflux method. Then MOFs, activated carbon and KACu(TAC) composite were characterized by BET. The BET characterization results showed that the successfully synthesized KA-Cu(TAC) composite experienced an increase in surface area.In the NH4OH adsorption process the optimum mass efficiency on activated carbon still increased at 8 grams while the KA-Cu(TAC) composite obtained an efficiency of 36, 6% and optimally at a mass of 4 g. At variations in concentration, the efficiency of the two samples still decreased. And the optimum time efficiency obtained in the NH4OH adsorption process with activated carbon was 70% and the KA-Cu(TAC) composite was 86.6%, both samples were equally optimal at 75 minutes.","PeriodicalId":13519,"journal":{"name":"Indonesian Journal of Chemical Science and Technology (IJCST)","volume":"31 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91430443","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-31DOI: 10.24114/ijcst.v6i2.49371
Lidia Mutia Sari, Jasmidi Jasmidi, H. Nasution, M. Zubir, Siti Rahmah, R. Selly, P. Faradilla
This study aims to determine the adsorption and desorption abilities of activated carbon and Cu-(TAC) composites in the β-carotene adsorption process on Crude Palm Oil (CPO). Oil Palm Empty Fruit Bunches (EFB) are used as activated carbon and modified with MOFs Cu-(TAC). Activated carbon and Cu-(TAC) composites were characterized by XRD, SEM-EDX, and BET. The concentration of β-carotene absorbed during the adsorption process was analyzed using a UV-Vis spectrophotometer. The variations used to determine the optimum conditions for absorption of β-carotene were the mass variation of the adsorbent and the variation in the contact time between the adsorbent and adsorbate. The results of the characterization of activated carbon showed a sharp absorption in the presence of O-H, C-H and C-O groups indicating the presence of cellulose. Activated carbon is amorphous and the Cu-(TAC) composite has a crystal structure and its pore size is mesoporous. The optimum conditions for the use of activated carbon for β-carotene adsorption were the mass variation of 8 grams with 0.495 ppm of β-carotene and contact time at 120 minutes with 2.605 ppm of β-carotene. The optimum condition of the Cu-(TAC) composite in the β-carotene adsorption process was at 4 gram mass variation with 1.026 ppm β-carotene content and optimum contact time at 60 minutes with 6.384 ppm β-carotene content. The ability of desorption can be seen from the percentage of desorption showing activated carbon in the 150th minute with 96.252% while in the Cu-(TAC) composite in the 30th minute with 88.188%.
{"title":"Synthesis of Cu-(TAC) Composite with Oil Palm Empty Fruit Bunch Waste Activated Carbon Through the Adsorption Mechanism of βCarotene","authors":"Lidia Mutia Sari, Jasmidi Jasmidi, H. Nasution, M. Zubir, Siti Rahmah, R. Selly, P. Faradilla","doi":"10.24114/ijcst.v6i2.49371","DOIUrl":"https://doi.org/10.24114/ijcst.v6i2.49371","url":null,"abstract":"This study aims to determine the adsorption and desorption abilities of activated carbon and Cu-(TAC) composites in the β-carotene adsorption process on Crude Palm Oil (CPO). Oil Palm Empty Fruit Bunches (EFB) are used as activated carbon and modified with MOFs Cu-(TAC). Activated carbon and Cu-(TAC) composites were characterized by XRD, SEM-EDX, and BET. The concentration of β-carotene absorbed during the adsorption process was analyzed using a UV-Vis spectrophotometer. The variations used to determine the optimum conditions for absorption of β-carotene were the mass variation of the adsorbent and the variation in the contact time between the adsorbent and adsorbate. The results of the characterization of activated carbon showed a sharp absorption in the presence of O-H, C-H and C-O groups indicating the presence of cellulose. Activated carbon is amorphous and the Cu-(TAC) composite has a crystal structure and its pore size is mesoporous. The optimum conditions for the use of activated carbon for β-carotene adsorption were the mass variation of 8 grams with 0.495 ppm of β-carotene and contact time at 120 minutes with 2.605 ppm of β-carotene. The optimum condition of the Cu-(TAC) composite in the β-carotene adsorption process was at 4 gram mass variation with 1.026 ppm β-carotene content and optimum contact time at 60 minutes with 6.384 ppm β-carotene content. The ability of desorption can be seen from the percentage of desorption showing activated carbon in the 150th minute with 96.252% while in the Cu-(TAC) composite in the 30th minute with 88.188%.","PeriodicalId":13519,"journal":{"name":"Indonesian Journal of Chemical Science and Technology (IJCST)","volume":"48 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78571775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-31DOI: 10.24114/ijcst.v6i2.49362
R. Selly, Angel Shylvia Panjaitan, Dinda Natalisa Br. Gurusinga,, Dira Khairunissa, Santa Maria Manalu, Siti Rahmah
Liquid organic fertilizer (LOF) is a solution resulting from the decomposition of organic matter originating from plant residues, agro-industrial waste, animal waste, and human waste containing more than one nutrient. LOF can be made from liquid organic matter (liquid organic waste), by composting and providing composting activators so that a LOF that is stable and contains complete nutrients can be produced. The use of LOF has the advantage that although it is often used it does not damage the soil and plants, the use of organic waste as fertilizer can help improve soil structure and quality, because it contains nutrients and other organic matter. The process of adding different fertilizers to the plants for 10 days showed that there were different height changes for each plant. With only water, the plants only reach 0.1 cm difference in 7 days. The plants that were given LOF and NPK (Chemical Fertilizer) gained height in only 4 days with heights 15.6 cm and 16 cm respectively. The growth percentage between LOF and NPK showed a significant difference in 4 days with 0.6% and 3.2 % respectively.
{"title":"The Jasmine Plant Growth Effect Supplemented with Liquid Organic Fertilizer from Banana Peels","authors":"R. Selly, Angel Shylvia Panjaitan, Dinda Natalisa Br. Gurusinga,, Dira Khairunissa, Santa Maria Manalu, Siti Rahmah","doi":"10.24114/ijcst.v6i2.49362","DOIUrl":"https://doi.org/10.24114/ijcst.v6i2.49362","url":null,"abstract":"Liquid organic fertilizer (LOF) is a solution resulting from the decomposition of organic matter originating from plant residues, agro-industrial waste, animal waste, and human waste containing more than one nutrient. LOF can be made from liquid organic matter (liquid organic waste), by composting and providing composting activators so that a LOF that is stable and contains complete nutrients can be produced. The use of LOF has the advantage that although it is often used it does not damage the soil and plants, the use of organic waste as fertilizer can help improve soil structure and quality, because it contains nutrients and other organic matter. The process of adding different fertilizers to the plants for 10 days showed that there were different height changes for each plant. With only water, the plants only reach 0.1 cm difference in 7 days. The plants that were given LOF and NPK (Chemical Fertilizer) gained height in only 4 days with heights 15.6 cm and 16 cm respectively. The growth percentage between LOF and NPK showed a significant difference in 4 days with 0.6% and 3.2 % respectively.","PeriodicalId":13519,"journal":{"name":"Indonesian Journal of Chemical Science and Technology (IJCST)","volume":"34 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87976818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-31DOI: 10.24114/ijcst.v6i2.49364
Srunika Boangmanalu, E. Ginting
Biodiesel is a biofuel made from vegetable oil through an esterification-transesterification process. The process of making biodiesel is carried out by conventional heating methods and microwave heating. The reaction process was carried out according to the specified variables, with a concentration of 0.1% of the volume of methanol and a variable microwave power of 135, 225 and 315 watts with time variations of 5, 3 and 1 minute, as well as conventional heating at 60°C for 1 hour. The best result is the one using microwave heating with a power of 315 watts for 1 minute. The best biodiesel yield is 88.879%, with water content of 0.01%, an acid number of 0.56 Kg-KOH/g, a density of 0.892 g/mL and a viscosity of 2.617 cSt. The best result of biodiesel oil in comparison of is using the microwave heating method.
{"title":"Comparison between Transesterification Reaction with Microwave Heating and Conventional Heating for Biodiesel Production from Coconut Oil with Alkaline Catalyst","authors":"Srunika Boangmanalu, E. Ginting","doi":"10.24114/ijcst.v6i2.49364","DOIUrl":"https://doi.org/10.24114/ijcst.v6i2.49364","url":null,"abstract":"Biodiesel is a biofuel made from vegetable oil through an esterification-transesterification process. The process of making biodiesel is carried out by conventional heating methods and microwave heating. The reaction process was carried out according to the specified variables, with a concentration of 0.1% of the volume of methanol and a variable microwave power of 135, 225 and 315 watts with time variations of 5, 3 and 1 minute, as well as conventional heating at 60°C for 1 hour. The best result is the one using microwave heating with a power of 315 watts for 1 minute. The best biodiesel yield is 88.879%, with water content of 0.01%, an acid number of 0.56 Kg-KOH/g, a density of 0.892 g/mL and a viscosity of 2.617 cSt. The best result of biodiesel oil in comparison of is using the microwave heating method.","PeriodicalId":13519,"journal":{"name":"Indonesian Journal of Chemical Science and Technology (IJCST)","volume":"81 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83912415","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-31DOI: 10.24114/ijcst.v6i2.49369
Atikah Nur Syahirah, Jasmidi Jasmidi, Z. Muchtar, Siti Rahmah, A. Pulungan, M. Zubir, R. Selly, P. Faradilla
OPEFB is one source of natural fiber-based composites which have the potential to become activated carbon and nanocellulose. This study aims to synthesize and characterize the activated carbon/alginate/nanocellulose-Cu composite. The characterization used in this study is FTIR and PSA. The synthesis of activated carbon/alginate/nanocellulose-Cu composites began with a process of carbonization and activation with H3PO4 to produce Activated Carbon. Followed by a bleaching process with NaClO2 and a delignification process with Na2SO3 and NaOH to produce Nanocellulose. Alginate using commercial alginate. Furthermore, the three ingredients were mixed until homogeneous and put into a 0.1M CuSO4 solution to produce beads. The results of the characterization of characterization of PSA Nanocellulose obtained a particle size of 41.05 nm and the result of FTIR characterization on the activated carbon/alginate/nanocellulose-Cu composite contained the functional group OH group, triple C bond from stretching alkyne, C=C aromatic group, C-H alkane group, C-O group, the P=O stretching vibration of the P-O-C group and the alcohol OH group expressing the active carbon; there are functional groups of hydroxyl (OH), carboxyl, carbonyl, and C-O-C and –COOH bonds which represent alginate and there are OH functional groups, stretching C-H bonds, C-O stretching, stretching C-C, and β- glucosidic bonds between glucose units which indicate nanocellulose.
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