Mesopore silica modified with dimethylamine is one of the adsorbents used as a functional group for anion exchange and anion separation. Mesopore silica with the addition of amine compounds can be used to see the absorption capacity of silica against chromate anions using the column method. The absorption capacity of the chromate anion is 0.8609 mg/g with an absorption percentage of 99.3%. If the adsorption process has been maximized, the surface of the adsorbent is saturated or no longer able to absorb the adsorbate and equilibrium occurs, it can be continued with the desorption process. The factor used to see this desorption ability is the type of desorption, namely hydrochloric acid (HCl) with a release of 0.4061 mg of chromate anion with a desorption percentage of 95.3% and an optimum concentration of 0.1 M HCl with a release of 0.4287 mg chromate anion with a desorption percentage of 100%.
二甲胺修饰介孔二氧化硅是一种用于阴离子交换和阴离子分离的官能团吸附剂。加入胺类化合物的介孔二氧化硅可以用柱法观察二氧化硅对铬酸盐阴离子的吸收能力。对铬酸盐阴离子的吸收率为0.8609 mg/g，吸收率为99.3%。如果吸附过程已经达到最大值，吸附剂表面饱和或不再能够吸附吸附质而发生平衡，则可以继续进行解吸过程。考察这种解吸能力的因素是解吸类型，即盐酸(HCl)，其释放的铬酸盐阴离子为0.4061 mg，解吸率为95.3%，最佳浓度为0.1 M HCl，其释放的铬酸盐阴离子为0.4287 mg，解吸率为100%。
{"title":"Desorpsi Anion Kromat (CrO42-) dari Adsorben Silika Mesopori Termodifikasi DMA (Dimethylamine)","authors":"Septya Anggraini, Budhi Oktavia, Indang Dewata, Fajriah Azra","doi":"10.24036/periodic.v12i2.118120","DOIUrl":"https://doi.org/10.24036/periodic.v12i2.118120","url":null,"abstract":"Mesopore silica modified with dimethylamine is one of the adsorbents used as a functional group for anion exchange and anion separation. Mesopore silica with the addition of amine compounds can be used to see the absorption capacity of silica against chromate anions using the column method. The absorption capacity of the chromate anion is 0.8609 mg/g with an absorption percentage of 99.3%. If the adsorption process has been maximized, the surface of the adsorbent is saturated or no longer able to absorb the adsorbate and equilibrium occurs, it can be continued with the desorption process. The factor used to see this desorption ability is the type of desorption, namely hydrochloric acid (HCl) with a release of 0.4061 mg of chromate anion with a desorption percentage of 95.3% and an optimum concentration of 0.1 M HCl with a release of 0.4287 mg chromate anion with a desorption percentage of 100%.","PeriodicalId":213875,"journal":{"name":"Jurnal Periodic Jurusan Kimia UNP","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135055906","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 : 2023-08-01DOI: 10.24036/periodic.v12i2.118347
Mufi Nasda, Desy Kurniawati, Edi Nasra
Methylene blue is an aromatic hydrocarbon compound or thiazine dye with the chemical formula C 16 H 18 N 3 SCl which is most often used in industry, this cationic dye is very dangerous with a threshold value ranging from 5-10 mg/L in water and is difficult to degrade in the environment because it contains benzene compounds. The purpose of this study was to reduce the impact of methylene blue pollution on the waters. The adsorption method was selected in batches by utilizing plantation waste from matoa fruit peel as an adsorbent in the absorption of MB waste, because it is more effective, inexpensive, and environmentally friendly. Matoa skin contains cellulose and lignin, so it is considered potential to be used as an adsorbent. The results showed that the matoa skin adsorbent was able to adsorb methylene blue dye at an optimum contact time of 120 minutes and a stirring speed of 200 rpm, which was measured using a UV-Vis spectrophotometer at a wavelength of 664 nm.
{"title":"Pengaruh Waktu Kontak dan Kecepatan Pengadukan Terhadap Penyerapan Zat Warna Methylene Blue Menggunakan Biosorben Kulit Matoa (Pometia pinnata)","authors":"Mufi Nasda, Desy Kurniawati, Edi Nasra","doi":"10.24036/periodic.v12i2.118347","DOIUrl":"https://doi.org/10.24036/periodic.v12i2.118347","url":null,"abstract":"Methylene blue is an aromatic hydrocarbon compound or thiazine dye with the chemical formula C 16 H 18 N 3 SCl which is most often used in industry, this cationic dye is very dangerous with a threshold value ranging from 5-10 mg/L in water and is difficult to degrade in the environment because it contains benzene compounds. The purpose of this study was to reduce the impact of methylene blue pollution on the waters. The adsorption method was selected in batches by utilizing plantation waste from matoa fruit peel as an adsorbent in the absorption of MB waste, because it is more effective, inexpensive, and environmentally friendly. Matoa skin contains cellulose and lignin, so it is considered potential to be used as an adsorbent. The results showed that the matoa skin adsorbent was able to adsorb methylene blue dye at an optimum contact time of 120 minutes and a stirring speed of 200 rpm, which was measured using a UV-Vis spectrophotometer at a wavelength of 664 nm.","PeriodicalId":213875,"journal":{"name":"Jurnal Periodic Jurusan Kimia UNP","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135055897","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 : 2023-08-01DOI: 10.24036/periodic.v12i2.117621
Qory Sidwa Jufri, Fajriah Azra
An analysis study of the relationship between the net atomic charge modeling of 13 aryloxy metronidazole derivative compounds as anti-breast cancer has been carried out, which aims to obtain the net atomic charge value and the HKSA equation. The method used is the semi-empirical method of Austin Model 1 by performing geometry optimization. The best equation model selection is done by means of statistical correlation analysis and multilinear regression with the Backward . From the research results, model 1 is the best model with the equation LogIC 50= -777.834+(146.644*qC2)+(434.317*qC5)+(1299.237*qN7)-(243.853*qO8)-(65.686*qC10)-(137.823 *qC11)+(66.348*qO12) Dengan n=7; R= 0.943; R 2 = 0.89; SE= 0.14774; Sig= 0.036; PRESS= 0.10914.
{"title":"Pemodelan Hubungan Muatan Atom Bersih dengan Aktivitas Senyawa Turunan Metronidazol Ariloksi sebagai Antikanker Payudara dengan Metode AM1","authors":"Qory Sidwa Jufri, Fajriah Azra","doi":"10.24036/periodic.v12i2.117621","DOIUrl":"https://doi.org/10.24036/periodic.v12i2.117621","url":null,"abstract":"An analysis study of the relationship between the net atomic charge modeling of 13 aryloxy metronidazole derivative compounds as anti-breast cancer has been carried out, which aims to obtain the net atomic charge value and the HKSA equation. The method used is the semi-empirical method of Austin Model 1 by performing geometry optimization. The best equation model selection is done by means of statistical correlation analysis and multilinear regression with the Backward . From the research results, model 1 is the best model with the equation LogIC 50= -777.834+(146.644*qC2)+(434.317*qC5)+(1299.237*qN7)-(243.853*qO8)-(65.686*qC10)-(137.823 *qC11)+(66.348*qO12) Dengan n=7; R= 0.943; R 2 = 0.89; SE= 0.14774; Sig= 0.036; PRESS= 0.10914.","PeriodicalId":213875,"journal":{"name":"Jurnal Periodic Jurusan Kimia UNP","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135055913","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 : 2023-08-01DOI: 10.24036/periodic.v12i2.117510
Berliana Salsabila, Edi Nasra, Hardeli Hardeli, Indang Dewata, Desy Kurniawati
One of the effective methods in handling the impact of pollution by copper metal is the biosorption method using matoa peel powder (Pometia pinnata). The purpose of this research is to determine the optimum absorption conditions and the optimum capacity for absorption of copper metal ions (Cu2+) using the batch method with variations in pH, concentration, particle size, contact time, and stirring speed.. The results of the research showed that the optimum conditions for the absorption of Cu2+ metal ions were at pH 5, concentration of 220 ppm, particle size of 180 m, contact time of 90 minutes and stirring speed of 300 rpm was 12,059 mg/g. The adsorption isotherm of Cu2+ metal with matoa skin biosorbent (Pometia pinnata) tends to follow the Freundlich isotherm equation with a determinant coefficient (R) of 0,9992. Keywords — Biosorption, Metal ion Cu2+, pomettia pinnata, Batch method
{"title":"Pengaruh pH dan Konsentrasi pada Penyerapan Ion Logam Cu(II) Menggunakan Kulit Buah Matoa ( Pometia pinnata )","authors":"Berliana Salsabila, Edi Nasra, Hardeli Hardeli, Indang Dewata, Desy Kurniawati","doi":"10.24036/periodic.v12i2.117510","DOIUrl":"https://doi.org/10.24036/periodic.v12i2.117510","url":null,"abstract":"One of the effective methods in handling the impact of pollution by copper metal is the biosorption method using matoa peel powder (Pometia pinnata). The purpose of this research is to determine the optimum absorption conditions and the optimum capacity for absorption of copper metal ions (Cu2+) using the batch method with variations in pH, concentration, particle size, contact time, and stirring speed.. The results of the research showed that the optimum conditions for the absorption of Cu2+ metal ions were at pH 5, concentration of 220 ppm, particle size of 180 m, contact time of 90 minutes and stirring speed of 300 rpm was 12,059 mg/g. The adsorption isotherm of Cu2+ metal with matoa skin biosorbent (Pometia pinnata) tends to follow the Freundlich isotherm equation with a determinant coefficient (R) of 0,9992. Keywords — Biosorption, Metal ion Cu2+, pomettia pinnata, Batch method","PeriodicalId":213875,"journal":{"name":"Jurnal Periodic Jurusan Kimia UNP","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135055909","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 : 2023-08-01DOI: 10.24036/periodic.v12i2.118009
Juniyas Aditia, Ananda Putra
Biodegradable plastics are plastics that are easily degraded by microorganisms. This study aims to determine the effect of adding carboxymethyl cellulose additives to biodegradable plastics based on PEG bacterial cellulose from coconut water ( cocos nucifera ) and to determine physical, mechanical, and biodegradable properties. This study used 14% polyethylene glycol 400 as a plasticizer with variations in the mass of carboxymethyl cellulose, namely 2 gr, 4 gr, 6 gr, and 8 gr. The results of testing the physical properties obtained are the value of % water content and the degree of swelling increase with the addition of the mass of carboxymethyl cellulose. The maximum result from testing the mechanical properties obtained was in the addition of carboxymethyl cellulose 6 gr with a tensile strength value of 101.05 MPa, elasticity of 2544.83 MPa, and elongation of 13.78 %. In the biodegradation test carried out by burial for 15 days, the results obtained that more carboxymethyl cellulose added the ability of plastic biodegradation increased. The characteristics of the functional group using FTIR showed that there was no new functional group formed, and the results of the characteristics of the degree of crystallinity in biodegradable plastics obtained the degree of pure SB plastic kristanility was 83.75%, SBPEG was 70.68%, and SBPEG-C 6 gr was 74.20%.
{"title":"Pengaruh Penambahan Carboxymethyl Cellulose (CMC) Terhadap Sifat Mekanik Dan Biodegradasi Plastik Biodegradable Berbasis Selulosa Bakteri –Polietilen Glikol (PEG) Dari Air Kelapa (Cocos nucifera)","authors":"Juniyas Aditia, Ananda Putra","doi":"10.24036/periodic.v12i2.118009","DOIUrl":"https://doi.org/10.24036/periodic.v12i2.118009","url":null,"abstract":"Biodegradable plastics are plastics that are easily degraded by microorganisms. This study aims to determine the effect of adding carboxymethyl cellulose additives to biodegradable plastics based on PEG bacterial cellulose from coconut water ( cocos nucifera ) and to determine physical, mechanical, and biodegradable properties. This study used 14% polyethylene glycol 400 as a plasticizer with variations in the mass of carboxymethyl cellulose, namely 2 gr, 4 gr, 6 gr, and 8 gr. The results of testing the physical properties obtained are the value of % water content and the degree of swelling increase with the addition of the mass of carboxymethyl cellulose. The maximum result from testing the mechanical properties obtained was in the addition of carboxymethyl cellulose 6 gr with a tensile strength value of 101.05 MPa, elasticity of 2544.83 MPa, and elongation of 13.78 %. In the biodegradation test carried out by burial for 15 days, the results obtained that more carboxymethyl cellulose added the ability of plastic biodegradation increased. The characteristics of the functional group using FTIR showed that there was no new functional group formed, and the results of the characteristics of the degree of crystallinity in biodegradable plastics obtained the degree of pure SB plastic kristanility was 83.75%, SBPEG was 70.68%, and SBPEG-C 6 gr was 74.20%.","PeriodicalId":213875,"journal":{"name":"Jurnal Periodic Jurusan Kimia UNP","volume":"117 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135055895","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}
Several industrial activities such as fertilizer industry, mining, battery, electronics and machinery can cause heavy metal pollution and one of them is Cu(II) heavy metal. At high levels of metal concentrations of Cu(II) will be very dangerous for the environment and living things, so it is necessary to find a solution to overcome the problem of metal pollution of Cu(II) is. One method that can be used is the biosorption method. In this study, pectin extract from kedondong fruit peel was used as a biosorbent. This research was conducted to determine the optimum mass of biosorbent in the biosorption process. Then the pectin characterization was carried out the Fourier Transform Infra Red instrument, then the absorbed Cu(II) metal content was determined using the Atomic Absorption Spectroscopy instrument. From this study, the optimum mass of biosorbent was 0.1 gram with an absorption capacity of 2,940 mg/g.
{"title":"Pengaruh Massa Biosorben Terhadap Penyerapan Ion Logam Cu(II) Oleh Ekstrak Pektin dari Kulit Buah Kedondong (Spondias dulcis)","authors":"Elinda Fithriana, Trisna Kumala Sari, Indang Dewata, Desy Kurniawati, Romy Dwipa Yamesa Away","doi":"10.24036/periodic.v12i2.118466","DOIUrl":"https://doi.org/10.24036/periodic.v12i2.118466","url":null,"abstract":"Several industrial activities such as fertilizer industry, mining, battery, electronics and machinery can cause heavy metal pollution and one of them is Cu(II) heavy metal. At high levels of metal concentrations of Cu(II) will be very dangerous for the environment and living things, so it is necessary to find a solution to overcome the problem of metal pollution of Cu(II) is. One method that can be used is the biosorption method. In this study, pectin extract from kedondong fruit peel was used as a biosorbent. This research was conducted to determine the optimum mass of biosorbent in the biosorption process. Then the pectin characterization was carried out the Fourier Transform Infra Red instrument, then the absorbed Cu(II) metal content was determined using the Atomic Absorption Spectroscopy instrument. From this study, the optimum mass of biosorbent was 0.1 gram with an absorption capacity of 2,940 mg/g.","PeriodicalId":213875,"journal":{"name":"Jurnal Periodic Jurusan Kimia UNP","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135055900","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 : 2023-08-01DOI: 10.24036/periodic.v12i2.118085
Deni Marlina, Budhi Oktavia, Sri Benti Etika, Syamsi Aini
Mesoporous silica is a solid silica having a pore size of 2-50 nm. Mesoporous silica can be immobilized to the surface. Modification of mesoporous silica with dimethylamine aims to modify amine compounds. Mesoporous silica with the addition of amine compounds reacted with GPTMS can be used as nitrite anion adsorption to see the absorption of silica to nitrite anions using the column method, the adsorption capacity of nitrite anions is 0.0182 mg/g with an absorption percentage of 96.71%. Then the desorption process was carried out, the factor used to see the desorption ability was the type of desorption, namely hydrochloric acid (HCl) with the release of 0.0071 mg of nitrite anion from 0.0085 mg of nitrite anion that was absorbed and the percentage of desorption was 83.52% and a concentration factor with the optimum concentration of 0.15M HCl with the release of 0.0091 mg of nitrite anion with 100% desorption percentage.
{"title":"Penentuan Kondisi Optimum Desorpsi Anion Nitrit Dari Adsorben Silika Mesopori Termodifikasi DMA (Dimethylamine)","authors":"Deni Marlina, Budhi Oktavia, Sri Benti Etika, Syamsi Aini","doi":"10.24036/periodic.v12i2.118085","DOIUrl":"https://doi.org/10.24036/periodic.v12i2.118085","url":null,"abstract":"Mesoporous silica is a solid silica having a pore size of 2-50 nm. Mesoporous silica can be immobilized to the surface. Modification of mesoporous silica with dimethylamine aims to modify amine compounds. Mesoporous silica with the addition of amine compounds reacted with GPTMS can be used as nitrite anion adsorption to see the absorption of silica to nitrite anions using the column method, the adsorption capacity of nitrite anions is 0.0182 mg/g with an absorption percentage of 96.71%. Then the desorption process was carried out, the factor used to see the desorption ability was the type of desorption, namely hydrochloric acid (HCl) with the release of 0.0071 mg of nitrite anion from 0.0085 mg of nitrite anion that was absorbed and the percentage of desorption was 83.52% and a concentration factor with the optimum concentration of 0.15M HCl with the release of 0.0091 mg of nitrite anion with 100% desorption percentage.","PeriodicalId":213875,"journal":{"name":"Jurnal Periodic Jurusan Kimia UNP","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135055907","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 : 2023-08-01DOI: 10.24036/periodic.v12i2.117529
Fazhira Hanifah, Umar Kalmar Nizar
Jicama dregs contain starch which has the potential as a carbon source for advanced materials through the carbonization process to produce carbon. The purpose of this study was to determine the optimum carbonization temperature in order to obtain economical and quality jicama dregs carbon. Jicama dregs were carbonized at various temperatures of 250°C, 300°C, 350°C, 400°C and 450°C for 1 hour. The jicama dregs carbon was then analyzed proximately by testing the ash content, vapor content and bound carbon. The results showed that the optimal carbonization temperature was carbon produced at a temperature of 250°C with an ash content test of 28.92%, vapor content of 1.89% and bound carbon of 72.97%. The proximate analysis value almost meets the standard of SNI 06-3730-199 5.
{"title":"Analisis Proksimat Karbon Ampas Bengkuang (Pachyrhzus erosus) sebagai Sumber Material Maju","authors":"Fazhira Hanifah, Umar Kalmar Nizar","doi":"10.24036/periodic.v12i2.117529","DOIUrl":"https://doi.org/10.24036/periodic.v12i2.117529","url":null,"abstract":"Jicama dregs contain starch which has the potential as a carbon source for advanced materials through the carbonization process to produce carbon. The purpose of this study was to determine the optimum carbonization temperature in order to obtain economical and quality jicama dregs carbon. Jicama dregs were carbonized at various temperatures of 250°C, 300°C, 350°C, 400°C and 450°C for 1 hour. The jicama dregs carbon was then analyzed proximately by testing the ash content, vapor content and bound carbon. The results showed that the optimal carbonization temperature was carbon produced at a temperature of 250°C with an ash content test of 28.92%, vapor content of 1.89% and bound carbon of 72.97%. The proximate analysis value almost meets the standard of SNI 06-3730-199 5.","PeriodicalId":213875,"journal":{"name":"Jurnal Periodic Jurusan Kimia UNP","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135055633","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 : 2023-08-01DOI: 10.24036/periodic.v12i2.118255
Dwi Hartati, Desy Kurniawati, Edi Nasra
This study aims to determine the optimum conditions for absorption of malachite green dye waste using matoa fruit peel biosorbent (Pometia pinnata) using a batch method with variations in particle size and contact time which will be tested with UV-Vis spectrophotometer instruments. Before being used as a biosorbent, matoa skin was activated first using 0.01 M HNO 3 . Activation of the biosorbent was carried out to improve the performance of the biosorbent because activation can enlarge the pores and volume of the biosorbent as well as the impurities contained in the biosorbent. The results showed that the optimum conditions for variations in particle size were 106 µm with an absorption capacity of 44.08 mg/g and a contact time of 90 minutes with an absorption capacity of 46.67 mg/g.
{"title":"Optimasi Penyerapan Malachite Green Menggunakan Biosorben Kulit Matoa (Pometia pinnata) dengan Metode Batch","authors":"Dwi Hartati, Desy Kurniawati, Edi Nasra","doi":"10.24036/periodic.v12i2.118255","DOIUrl":"https://doi.org/10.24036/periodic.v12i2.118255","url":null,"abstract":"This study aims to determine the optimum conditions for absorption of malachite green dye waste using matoa fruit peel biosorbent (Pometia pinnata) using a batch method with variations in particle size and contact time which will be tested with UV-Vis spectrophotometer instruments. Before being used as a biosorbent, matoa skin was activated first using 0.01 M HNO 3 . Activation of the biosorbent was carried out to improve the performance of the biosorbent because activation can enlarge the pores and volume of the biosorbent as well as the impurities contained in the biosorbent. The results showed that the optimum conditions for variations in particle size were 106 µm with an absorption capacity of 44.08 mg/g and a contact time of 90 minutes with an absorption capacity of 46.67 mg/g.","PeriodicalId":213875,"journal":{"name":"Jurnal Periodic Jurusan Kimia UNP","volume":"278 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135055901","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 : 2023-08-01DOI: 10.24036/periodic.v12i2.118025
Karina Ventika Sari, Ananda Putra
Material termoelektrik merupakan suatu material yang dapat mengubah energi panas menjadi listrik. Pada penelitian ini dilakukan pemanfaatan karbon aktif limbah sabut pinang ( Areca catechu L) sebagai material termoelektrik. Komposit karbon aktif – CuO dibuat dengan mecampurkan berbagai perbandingan massa (gram). Material komposit dilakukan pengujian tegangan listrik (efek seebeck), konduktivitas listrik dan daya hantar panas. Untuk melihat bentuk dan struktur kristal dilakukan karakterisasi X-Ray Diffraction (XRD) dan untuk mengetahui komposisi kimia digunakan karakterisasi X-Ray Fluorescence (XRF). Pengujian ini mendapati hasil bahwa material komposit perbandingan massa 0,5 gram karbon aktif dan 1 gram CuO merupakan material terbaik sebagai material termoelektrik karena mempunyai nilai konduktivitas listrik tinggi sebesar 0,0913 MΩ-.cm- dengan daya hantar panas yang rendah yaitu 4,96 J/s serta tegangan listrik (efek seebeck) sebesar 14,44 x 10-3 mV/K. Hasil karakterisasi XRD menunjukkan bahwa bentuk struktur dari komposit karbon aktif – CuO berbentuk amorf kristal yang tidak merubah bentuk kristal dari CuO dan karakterisasi XRF menunjukan tidak ada komposisi baru yang terbentuk pada material.
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