Research on the degradation of methyl orange has been carried out using the photosonolysis method with the help of a TiO₂ catalyst. This study aims to determine how the effect of adding catalyst mass to the degradation of methyl orange and to determine the optimum time to degrade methyl orange. The variation of the mass of the catalyst used to degrade the methyl orange dye is from 0 grams to 0.25 grams, while the time variation is in the range of 30 minutes to 150 minutes with a 30 minute interval. The results of the measurement of the maximum wavelength and the color of methyl orange using a UV-Vis spectrophotometer were 462.8 nm with an absorbance value of 0.772. In the variation of the catalyst mass, the maximum mass obtained at 0.1 grams of TiO₂ catalyst with %D obtained was 23.46% while for the variation of the degradation time the optimum time was obtained at 120 minutes with the %D result of 32.04%. In this study, the presence of hydroxyl radicals produced during the photosynthesis process plays an important role in the process of degrading methyl orange.
在tio2催化剂的作用下，采用光声解法对甲基橙进行了降解研究。本研究旨在确定添加催化剂质量对甲基橙降解的影响，并确定降解甲基橙的最佳时间。降解甲基橙染料所用催化剂的质量变化范围为0克~ 0.25克，时间变化范围为30分钟~ 150分钟，间隔为30分钟。紫外可见分光光度计测定甲基橙的最大波长为462.8 nm，吸光度值为0.772。在催化剂质量的变化中，0.1 g tio2催化剂的最大质量为23.46%，得到的%D;在降解时间的变化中，最佳降解时间为120 min，得到的%D为32.04%。在本研究中，光合作用过程中产生的羟基自由基的存在在甲基橙降解过程中发挥了重要作用。
{"title":"Degradasi Zat Warna Methyl Orange dengan Katalis TiO2 Menggunakan Metode Fotosonolisis","authors":"Suci Ramadhani, Hary Sanjaya, Yohandri Yohandri","doi":"10.24036/p.v12i1.116883","DOIUrl":"https://doi.org/10.24036/p.v12i1.116883","url":null,"abstract":"Research on the degradation of methyl orange has been carried out using the photosonolysis method with the help of a TiO₂ catalyst. This study aims to determine how the effect of adding catalyst mass to the degradation of methyl orange and to determine the optimum time to degrade methyl orange. The variation of the mass of the catalyst used to degrade the methyl orange dye is from 0 grams to 0.25 grams, while the time variation is in the range of 30 minutes to 150 minutes with a 30 minute interval. The results of the measurement of the maximum wavelength and the color of methyl orange using a UV-Vis spectrophotometer were 462.8 nm with an absorbance value of 0.772. In the variation of the catalyst mass, the maximum mass obtained at 0.1 grams of TiO₂ catalyst with %D obtained was 23.46% while for the variation of the degradation time the optimum time was obtained at 120 minutes with the %D result of 32.04%. In this study, the presence of hydroxyl radicals produced during the photosynthesis process plays an important role in the process of degrading methyl orange.","PeriodicalId":213875,"journal":{"name":"Jurnal Periodic Jurusan Kimia UNP","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135721350","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}
— Silica is a mineral with potential for use in a variety of industries. Silica can be produced an extraction process using natural materials such as Napa Soil from the South Coast as the raw material. In this study, the extraction method used is a modification of the alkali fusion and hydrothermal methods. The Napa soil was calcined at 750°C for 4 hours, then reacted with NaOH (2; 4 ; 6; and 8) M at 95°C to form Na silicate, then 6M HCl was added to form silicic acid and finally the silica gel was dried to form SiO 2 . The extracted silica was also characterized using XRF which showed the silica purity level increased to 61.84%. The maximum extraction yield was obtained with an 8 M NaOH concentration of 30.78 %, according to the data. The extracted silica was also analyzed using XRF, which confirmed that the purity level of the silica had enhanced to 69.85 %.
{"title":"Ekstraksi Silika (SiO2) dari Mineral Tanah Napa Pesisir Selatan","authors":"Asy Syifa Hanawindy, M. Mawardi","doi":"10.24036/p.v12i1.116507","DOIUrl":"https://doi.org/10.24036/p.v12i1.116507","url":null,"abstract":"— Silica is a mineral with potential for use in a variety of industries. Silica can be produced an extraction process using natural materials such as Napa Soil from the South Coast as the raw material. In this study, the extraction method used is a modification of the alkali fusion and hydrothermal methods. The Napa soil was calcined at 750°C for 4 hours, then reacted with NaOH (2; 4 ; 6; and 8) M at 95°C to form Na silicate, then 6M HCl was added to form silicic acid and finally the silica gel was dried to form SiO 2 . The extracted silica was also characterized using XRF which showed the silica purity level increased to 61.84%. The maximum extraction yield was obtained with an 8 M NaOH concentration of 30.78 %, according to the data. The extracted silica was also analyzed using XRF, which confirmed that the purity level of the silica had enhanced to 69.85 %.","PeriodicalId":213875,"journal":{"name":"Jurnal Periodic Jurusan Kimia UNP","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121574794","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}
– Molecularly Imprinted Conducting Polymers (MICPs) are polymers that have cavities that can conduct electricity. Cavities in the polymer result from template removal. The method used for the synthesis of MICPs membrane is the photopolymerization method using Ultra-Violet light. Determination of uric acid levels in solution can be analyzed using a UV-Vis spectrophotometer and in blood using an easy touch. Meanwhile, to determine the electrical conductivity using a four point probe (FPP). Based on the research, it was found that the uric acid MICPs membrane had optimum absorption at a contact time of 24 hours, with an absorption capacity of 0.532 mg/g. The uric acid MICPs membrane can absorb uric acid molecules in human blood with an absorption capacity of 0.57 mg/g according to blood pH by easy touch testing. The results of this study indicate that the MICPs membrane can absorb uric acid both in solution and in blood.
{"title":"Pengaruh Waktu Perendaman Terhadap Penyerapan Asam Urat Menggunakan Membran Molecularly Imprinted Conducting Polimers (MICPs)","authors":"Nilu Gussarsi, Budhi Oktavia, Alizar Ulianas","doi":"10.24036/p.v12i1.116991","DOIUrl":"https://doi.org/10.24036/p.v12i1.116991","url":null,"abstract":"– Molecularly Imprinted Conducting Polymers (MICPs) are polymers that have cavities that can conduct electricity. Cavities in the polymer result from template removal. The method used for the synthesis of MICPs membrane is the photopolymerization method using Ultra-Violet light. Determination of uric acid levels in solution can be analyzed using a UV-Vis spectrophotometer and in blood using an easy touch. Meanwhile, to determine the electrical conductivity using a four point probe (FPP). Based on the research, it was found that the uric acid MICPs membrane had optimum absorption at a contact time of 24 hours, with an absorption capacity of 0.532 mg/g. The uric acid MICPs membrane can absorb uric acid molecules in human blood with an absorption capacity of 0.57 mg/g according to blood pH by easy touch testing. The results of this study indicate that the MICPs membrane can absorb uric acid both in solution and in blood.","PeriodicalId":213875,"journal":{"name":"Jurnal Periodic Jurusan Kimia UNP","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123623503","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}
Muhammad Satrio Hutomo, Edi Nasra, Syamsi Aini, Hesty Parbuntari
— The study of has been the subject of research the Pb(II) association complex using KI and Rhodamine B. The goal of this research is to determine the best conditions for the Pb(II) association complex, such as iodine concentration, solution pH, and Rhodamine B concentration. The measurement method used is the UV spectrophotometry method. -Vis and AAS (Atomic Absorption Spectrophotometer). Pb(II) is reacted with excess iodine to form an anion complex (PbI 4 ) 2- . The anion complex formed is then reacted with a Rhodamine B cation complex (RB + ) to form an association complex [RB] 2 [PbI 4 ]. The findings revealed that the optimal iodine condition for the formation of the anion complex (PbI 4 ) 2- at a time of 2 hours, a concentration of 0.4 M with an absorbance of 0.1069 A at a maximum wavelength of 266 nm. While the optimum conditions for the association complex [RB] 2 [PbI 4 ] 2- occurred at a wavelength of 555 nm with an absorbance of 0.3348 A, pH 5 with an absorbance of 3.4101 A and a concentration of Rhodamine B 0.001% with an absorbance of 2.2798 A. The resulting association complex contacted with Pb(NO 3 ) 2- at a concentration of 0.01 ppm succeeded in concentrating by obtaining a concentration of 0.7419 ppm and an absorbance value of 0.0108 A. So that a concentration factor of 74.19 times was obtained.
{"title":"Studi Kompleks Assosiasi Pb (II) Dengan Penambahan KI dan Rhodamin B","authors":"Muhammad Satrio Hutomo, Edi Nasra, Syamsi Aini, Hesty Parbuntari","doi":"10.24036/p.v12i1.117111","DOIUrl":"https://doi.org/10.24036/p.v12i1.117111","url":null,"abstract":"— The study of has been the subject of research the Pb(II) association complex using KI and Rhodamine B. The goal of this research is to determine the best conditions for the Pb(II) association complex, such as iodine concentration, solution pH, and Rhodamine B concentration. The measurement method used is the UV spectrophotometry method. -Vis and AAS (Atomic Absorption Spectrophotometer). Pb(II) is reacted with excess iodine to form an anion complex (PbI 4 ) 2- . The anion complex formed is then reacted with a Rhodamine B cation complex (RB + ) to form an association complex [RB] 2 [PbI 4 ]. The findings revealed that the optimal iodine condition for the formation of the anion complex (PbI 4 ) 2- at a time of 2 hours, a concentration of 0.4 M with an absorbance of 0.1069 A at a maximum wavelength of 266 nm. While the optimum conditions for the association complex [RB] 2 [PbI 4 ] 2- occurred at a wavelength of 555 nm with an absorbance of 0.3348 A, pH 5 with an absorbance of 3.4101 A and a concentration of Rhodamine B 0.001% with an absorbance of 2.2798 A. The resulting association complex contacted with Pb(NO 3 ) 2- at a concentration of 0.01 ppm succeeded in concentrating by obtaining a concentration of 0.7419 ppm and an absorbance value of 0.0108 A. So that a concentration factor of 74.19 times was obtained.","PeriodicalId":213875,"journal":{"name":"Jurnal Periodic Jurusan Kimia UNP","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129609064","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}
— This study aims to determine the effect of the addition of TiO 2 dopant on the electrical conductivity of polyaniline synthesis using the photopolymerization method and characterization with Fourier Transform Infrared (FTIR) and Diffuse Reflectance UV-Vis (DR UV-Vis). Synthesis of polyaniline was carried out by mixing aniline monomer with Ethylene Glycole Dimetacrylate (EGDMA) as a crosslinker and Dimethoxy Phenylacetophenone (DMPP) as an initiator, and the addition of TiO 2 dopant as much as 0.006 g, 0.011 g, 0.016 g, 0.021 g and 0.026 g. The obtained PANI and PANI/TiO 2 were measured for electrical conductivity using the Four Point Probe (FPP). The result shows that the optimal electrical conductivity value was 12.60 × 10 -3 S/cm which was owned by PANI added with TiO 2 of 0.006 g.
{"title":"Pengaruh Penambahan Titanium Dioksida (TiO2) terhadap Sifat Konduktor dari Polianilin (PANI)","authors":"S. Wulandari, Umar Kalmar Nizar","doi":"10.24036/p.v12i1.117166","DOIUrl":"https://doi.org/10.24036/p.v12i1.117166","url":null,"abstract":"— This study aims to determine the effect of the addition of TiO 2 dopant on the electrical conductivity of polyaniline synthesis using the photopolymerization method and characterization with Fourier Transform Infrared (FTIR) and Diffuse Reflectance UV-Vis (DR UV-Vis). Synthesis of polyaniline was carried out by mixing aniline monomer with Ethylene Glycole Dimetacrylate (EGDMA) as a crosslinker and Dimethoxy Phenylacetophenone (DMPP) as an initiator, and the addition of TiO 2 dopant as much as 0.006 g, 0.011 g, 0.016 g, 0.021 g and 0.026 g. The obtained PANI and PANI/TiO 2 were measured for electrical conductivity using the Four Point Probe (FPP). The result shows that the optimal electrical conductivity value was 12.60 × 10 -3 S/cm which was owned by PANI added with TiO 2 of 0.006 g.","PeriodicalId":213875,"journal":{"name":"Jurnal Periodic Jurusan Kimia UNP","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116459768","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}
Carbon material is one example of the development of advanced materials. Carbon is the result of the decomposition of an organic compound through an imperfect carbonization process. Carbon can be utilized from organic waste materials containing cellulose, hemicellulose, lignin and starch. The composition of peanut shells is 65.7% cellulose, the high content of cellulose in peanut shells makes it a potential carbon source. The method used for the manufacture of peanut shell carbon is calcination at various temperatures of 250 0C, 300 0C, 350 0C and 400 0C. Carbon proximate analysis was carried out by testing the ash content, vapor content and bound carbon content. In this study the standard used is SNI 06-3730-1995. The results of the analysis showed that the ash content increased with increasing calcination temperature, while the vapor content decreased with increasing calcination temperature. The carbon content obtained decreases with increasing calcination temperature. The optimum condition of peanut shell carbon close to SNI 06-3730-1995 was obtained at carbon with a calcination temperature of 250 0C, 5.10% and a vapor content of 7.41% and a bound carbon content of 87.49%.
{"title":"Potensi Kulit Kacang Tanah (Arachis hypogaea) Sebagai Sumber Karbon Untuk Material Maju","authors":"Rida Rida, Umar Kalmar Nizar","doi":"10.24036/p.v12i1.117109","DOIUrl":"https://doi.org/10.24036/p.v12i1.117109","url":null,"abstract":"Carbon material is one example of the development of advanced materials. Carbon is the result of the decomposition of an organic compound through an imperfect carbonization process. Carbon can be utilized from organic waste materials containing cellulose, hemicellulose, lignin and starch. The composition of peanut shells is 65.7% cellulose, the high content of cellulose in peanut shells makes it a potential carbon source. The method used for the manufacture of peanut shell carbon is calcination at various temperatures of 250 0C, 300 0C, 350 0C and 400 0C. Carbon proximate analysis was carried out by testing the ash content, vapor content and bound carbon content. In this study the standard used is SNI 06-3730-1995. The results of the analysis showed that the ash content increased with increasing calcination temperature, while the vapor content decreased with increasing calcination temperature. The carbon content obtained decreases with increasing calcination temperature. The optimum condition of peanut shell carbon close to SNI 06-3730-1995 was obtained at carbon with a calcination temperature of 250 0C, 5.10% and a vapor content of 7.41% and a bound carbon content of 87.49%.","PeriodicalId":213875,"journal":{"name":"Jurnal Periodic Jurusan Kimia UNP","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122799172","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}
— The carbon approximation test of coconut coir has been successfully carried out. Carbon made at a temperature of 350 o C with variations in the length of time of 30, 45, 60 and 75 minutes was found to meet the test levels of SNI No. 06-3720-1995 and the best carbonization time for 60 minutes. In coconuts, coconut fiber is the dominating part because almost 35% of the weight of coconuts is coconut husk. The existence of waste is supported by the average production of coconuts in Indonesia of 15.5 billion eggs/year, so that the available material is quite a lot. This is a support in producing carbon because 60% of lignin has a carbon content.
{"title":"Pengujian Aproksimat Karbon Limbah Sabut Kelapa (Cocos nucifera)","authors":"Nanditho Azima Putra, Ananda Putra","doi":"10.24036/p.v12i1.116901","DOIUrl":"https://doi.org/10.24036/p.v12i1.116901","url":null,"abstract":"— The carbon approximation test of coconut coir has been successfully carried out. Carbon made at a temperature of 350 o C with variations in the length of time of 30, 45, 60 and 75 minutes was found to meet the test levels of SNI No. 06-3720-1995 and the best carbonization time for 60 minutes. In coconuts, coconut fiber is the dominating part because almost 35% of the weight of coconuts is coconut husk. The existence of waste is supported by the average production of coconuts in Indonesia of 15.5 billion eggs/year, so that the available material is quite a lot. This is a support in producing carbon because 60% of lignin has a carbon content.","PeriodicalId":213875,"journal":{"name":"Jurnal Periodic Jurusan Kimia UNP","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127568566","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}
{"title":"Potensi Asap Cair Hasil Pirolisis Tempurung Kelapa sebagai Biopestisida terhadap Ulat Penggerek Polong (Maruca testulalis) Tanaman Kacang Panjang (Vigna sinensis)","authors":"Nofrin Alisa, Iswendi Iswendi","doi":"10.24036/p.v12i1.116958","DOIUrl":"https://doi.org/10.24036/p.v12i1.116958","url":null,"abstract":"","PeriodicalId":213875,"journal":{"name":"Jurnal Periodic Jurusan Kimia UNP","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125226291","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}
{"title":"Potensi Pemanfaatan Sabut Pinang (Arecha cathecu L.) Kecamatan Lengayang sebagai Sumber Karbon untuk Bahan Baku Material Maju","authors":"Nadia Nadia, Umar Kalmar Nizar","doi":"10.24036/p.v12i1.117077","DOIUrl":"https://doi.org/10.24036/p.v12i1.117077","url":null,"abstract":"","PeriodicalId":213875,"journal":{"name":"Jurnal Periodic Jurusan Kimia UNP","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115009323","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}
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