Jurnal Chemurgy最新文献

PERMODELAN SPASIAL PENCEMARAN LOGAM BERAT DI SUNGAI BERBEK KAWASAN INDUSTRI SIDOARJO

Jurnal Chemurgy Pub Date : 2022-12-25 DOI: 10.30872/cmg.v6i2.9360

L. Fitrianah

引用次数: 0

OPTIMALISASI PROSES EKSTRAKSI MINYAK BIJI NYAMPLUNG MENGGUNAKAN RESPONSE SURFACE METHODOLOGY (RSM)

Jurnal Chemurgy Pub Date : 2022-12-25 DOI: 10.30872/cmg.v6i2.9450

Ahmad Moh. Nur, H. Huda, R. Fathoni

{"title":"OPTIMALISASI PROSES EKSTRAKSI MINYAK BIJI NYAMPLUNG MENGGUNAKAN RESPONSE SURFACE METHODOLOGY (RSM)","authors":"Ahmad Moh. Nur, H. Huda, R. Fathoni","doi":"10.30872/cmg.v6i2.9450","DOIUrl":"https://doi.org/10.30872/cmg.v6i2.9450","url":null,"abstract":"Nyamplung (Calophyllum inophyllum L.) is a plant with great potential as a fuel source that can be developed in Indonesia. The oil content of nyamplung seeds is 60-75%. This study aims to optimize the process of extracting oil from nyamplung seeds using hexane solvent at various operating conditions and obtain optimum extraction operating conditions. In the process stage, extraction will be carried out using hexane solvent with several operating variations, namely extraction temperature (35-45oC); extraction time (4-6 hours); stirring speed (200-600 rpm), the process of optimizing oil extraction from nyamplung seeds was carried out using the Response Surface Methodology (RSM). The oil obtained was then characterized through several analyzes, namely yield, acid number, density and viscosity. Based on the research results, optimization of the nyamplung seed oil extraction process resulted in an oil yield of 52.43% which was obtained at 40oC, 5 hours of extraction time and 500 rpm of stirrer speed. Optimization with the aim of maximizing the oil yield response was obtained 55.33% yield at 45oC, 6 hours extraction time and 600 rpm stirrer speed. Optimization of each oil quality does not produce a significant model response. The quality of the oil resulting from the optimization of the yield is an acid number of 10.51 mgKOH/g, a density of 0.94 g/ml, and a viscosity of 4.47 cP.Keywords: calophyllum, oil, optimization, response surface methodology ","PeriodicalId":118641,"journal":{"name":"Jurnal Chemurgy","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123487475","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}

引用次数: 0

DISPERSION OF SO2 AND NO2 EMITTED BY AUXILIARY BOILER OF PT KMI METHANOL INDUSTRIAL USING THE GAUSSIAN PLUM MODEL AERMOD IN BONTANG CITY EAST KALIMANTAN INDONESIA 利用高斯梅模型对印尼加里曼丹邦塘市pt kmi甲醇工业辅助锅炉排放的so2和no2进行了分散

Jurnal Chemurgy Pub Date : 2022-12-25 DOI: 10.30872/cmg.v6i2.9560

E. Sarwono, Eka Wijayanto, Hairul Huda, Reynaldi Ferdhani Harrits, Iqbal Fathur Zain

{"title":"DISPERSION OF SO2 AND NO2 EMITTED BY AUXILIARY BOILER OF PT KMI METHANOL INDUSTRIAL USING THE GAUSSIAN PLUM MODEL AERMOD IN BONTANG CITY EAST KALIMANTAN INDONESIA","authors":"E. Sarwono, Eka Wijayanto, Hairul Huda, Reynaldi Ferdhani Harrits, Iqbal Fathur Zain","doi":"10.30872/cmg.v6i2.9560","DOIUrl":"https://doi.org/10.30872/cmg.v6i2.9560","url":null,"abstract":"The petrochemical industry PT Kaltim Methanol Industri Bontang City, uses auxiliary boilers with natural gas fuel and is connected to the stack to emit pollutants into the atmosphere. The objectives of this study are SO2 modeling with a radius of 5 kilometers and modeling of NO2 with a radius of 10 kilometers from the emission source. Modeling using AERMOD software, AERMET Software, and Aermap ArcGIS Software. The wind rose in the dominant research area from the southwest and northeast directions. Dispersion of SO2 and NO2 decreases according to the distance. The increase in concentration occurred in areas that experienced elevation increases, in Teluk Pandan District with a distance of about 10 kilometers northwest with an elevation of about 100 meters above sea level, and part of the West Bontang District with a distance of about 5 kilometers to the southwest with an elevation of about 90 meters above sea level. The maximum concentration of SO2 at the receptor was 6.2631 μg/m3 on hourly modeling, 0.58132 μg/m3 on modeling per 24 hours, and 0.0317 μg/m3 on annual modeling. The maximum NO2 concentration at the receptor was 1.96781 μg/m3 on hourly modeling, 0.18089 μg/m3 on hourly modeling, and 0.01002 μg/m3 on annual modeling. The distribution of pollutants based on hourly modeling per 24 hours is spreading in all directions and irregularly while for annual modeling it tends to spread towards the southwest and northeast according to the wind rose.Keywords: AERMOD, Emissions, Modeling, Air Dispersion, Auxiliary boiler ","PeriodicalId":118641,"journal":{"name":"Jurnal Chemurgy","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121383000","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}

引用次数: 0

PREDICTION ANALYSIS OF FOULING MODEL ON HEAT EXCHANGER IN THE CRUDE OIL REFINERY 原油炼油厂换热器结垢模型预测分析

Jurnal Chemurgy Pub Date : 2022-06-22 DOI: 10.30872/cmg.v6i1.7672

Hairul Huda, Renanto Renanto, T. R. Biyanto, Rif'an Fathoni, Tantra Diwa Larasati

{"title":"PREDICTION ANALYSIS OF FOULING MODEL ON HEAT EXCHANGER IN THE CRUDE OIL REFINERY","authors":"Hairul Huda, Renanto Renanto, T. R. Biyanto, Rif'an Fathoni, Tantra Diwa Larasati","doi":"10.30872/cmg.v6i1.7672","DOIUrl":"https://doi.org/10.30872/cmg.v6i1.7672","url":null,"abstract":"Fouling mainly occurs in the oil industry. Fouling is an unwanted deposit in HE (heat exchanger). Reliable fouling models are scarce, although empirical and theoretical models have been proposed to describe fouling in heat exchangers. The general models of empirical fouling used are linear, falling rate, and asymptotic. The research methodology begins with the acquisition and use of operational fouling data, which is then followed by the use of an asymptotic fouling model and ends with calculating the thickness of fouling in all HE. The object of this research study is all HE in the crude oil refinery HEN (heat exchanger network). The aim of this research is to use the asymptotic fouling model and get the fouling thickness. The fouling resistance from time to time increases, but in the end, it tends to be stationary, where for the final value, the highest fouling resistance is in HE-10, namely 14.8E-03 (m2°C/W), and the lowest value is fouling resistance at HE- 01 is 1.27E-03 (m2°C/W). The thickness of HE fouling in asymptotic conditions indicates that HE undergoes the same deposition process as suppression.Keywords: fouling, heat exchanger, asymptotic, crude oil refinery, heat exchanger network","PeriodicalId":118641,"journal":{"name":"Jurnal Chemurgy","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131126325","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}

引用次数: 0

STUDI KINETIKA DEGRADASI LIMBAH ALKILBENZEN SULFONAT (ABS) DENGAN PROSES ELEKTRO FENTON 与芬顿电气工艺相关的氢气降解学研究

Jurnal Chemurgy Pub Date : 2022-06-22 DOI: 10.30872/cmg.v6i1.7746

R. Fathoni, P. Purwanto

{"title":"STUDI KINETIKA DEGRADASI LIMBAH ALKILBENZEN SULFONAT (ABS) DENGAN PROSES ELEKTRO FENTON","authors":"R. Fathoni, P. Purwanto","doi":"10.30872/cmg.v6i1.7746","DOIUrl":"https://doi.org/10.30872/cmg.v6i1.7746","url":null,"abstract":"This study describes the effect of operating conditions such as weight ratio (H2O2/COD), the initial pH of waste and molar ratio fenton reagent (H2O2/Fe2+) to the degradation of waste alkylbenzene sulfonate (ABS). The degradation of ABS with the Electro Fenton process (E-Fenton) conducted in a laboratory scale batch reactor. The increasing doses of the weight ratio the production of hydroxil radicals will be increase and of course will increase the rate of organic degradation. Using a weight ratio that exceeds the theoretical calculations tend to decrease the degradation of ABS concentration. The weight ratio of 2,1 resulted in a decrease of ABS concentration, COD and BOD5 of 94,075%, 94,040%, 81,273%, respectively. Medium acidity (pH) is one of the most decisive factor of Electro-Fenton process, at a pH 3 yield degradation of ABS amounted 98,093%. ABS removal efficiency increased with the increase of ferrous ion dosage at fenton’s reagent molar ratio and reached highest of ABS concentration, COD and BOD5 of 99,05%, 96,64%, and 91,18%, respectively, for the operating time for 60 minutes. A kinetic study was carried out using first order reaction kinetics model. Temperature changes that occur when the research generates activation energy of 80,811 J/K.mol through the Arrhenius equation. Keywords: alkylbenzene sulfonat, arrhenius, electro fenton, fenton reagent, kinetic study","PeriodicalId":118641,"journal":{"name":"Jurnal Chemurgy","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130706836","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}

引用次数: 0

ADSORPSI LOGAM KADMIUM (Cd) PADA KADMIUM SULFAT (CdSO4) MENGGUNAKAN BATANG POHON PISANG SEBAGAI ADSORBEN

Jurnal Chemurgy Pub Date : 2022-06-22 DOI: 10.30872/cmg.v6i1.7905

Diaz Galuh Purwitasari, Rahma Tussania, R. Fathoni

引用次数: 0

DESAIN INVERS DECOUPLING PADA SISTEM MIMO 3×3 DENGAN PENGENDALI PID

Jurnal Chemurgy Pub Date : 2022-06-22 DOI: 10.30872/cmg.v6i1.7477

Zahrotul Azizah

引用次数: 1

PROSES PIROLOSIS PENGOLAHAN SAMPAH PLASTIK MENJADI BAHAN BAKAR CAIR 塑料废物处理的彼得罗加工变成液体燃料

Jurnal Chemurgy Pub Date : 2022-06-22 DOI: 10.30872/cmg.v6i1.7300

M. A. Batutah, M. A. Setiawan, Hadi Kusnanto

{"title":"PROSES PIROLOSIS PENGOLAHAN SAMPAH PLASTIK MENJADI BAHAN BAKAR CAIR","authors":"M. A. Batutah, M. A. Setiawan, Hadi Kusnanto","doi":"10.30872/cmg.v6i1.7300","DOIUrl":"https://doi.org/10.30872/cmg.v6i1.7300","url":null,"abstract":"The research aims to utilize polyethylene (PET), polypropylene (PP) and polystyrene (PS) plastic waste into liquid fuel by the pyrolysis process, currently, especially in Surabaya, a lot of waste, 13% - 14% is plastic. The results of the sample from this study are to distinguish the temperature of the steam entering the condenser and also the temperature of the water in the condenser. And what will later be tested is that the oil from the plastic is close to the type of gasoline or diesel. The results of this study found that the optimum temperature to get a lot of results in 1 kg of plastic type Polyethylene (PET) is with a steam temperature of 142°C and a time of 90 minutes, while the type of plastic Polypropylene (PP) with a vapor temperature of 180°C and plastic type Polystyrene (PS) with a vapor temperature of 100°C and a condenser temperature of 15°C. The amount of oil produced by Polyethylene (PET) plastic at that temperature is 40 ml. while the plastic type Polypropylene (PP) the amount of oil produced is 100 ml. and this type of polystyrene (PS) plastic can produce 20 ml of oil. This result means that it is worth 75% of the weight of the plastic that has been processed. Meanwhile, the yield of this oil is close to the premium type.. Keywords: plastic waste, pyrolysis, liquid fuel","PeriodicalId":118641,"journal":{"name":"Jurnal Chemurgy","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117230097","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}

引用次数: 1

PROSES PERLAKUAN AWAL AMPAS TEBU DENGAN PELARUT ASAM DAN GELOMBANG MIKRO SEBAGAI BAHAN BAKU BIOETHANOL

Jurnal Chemurgy Pub Date : 2021-12-29 DOI: 10.30872/cmg.v5i2.6735

Medya Ayunda Fitri, Y. T. Rahkadima

{"title":"PROSES PERLAKUAN AWAL AMPAS TEBU DENGAN PELARUT ASAM DAN GELOMBANG MIKRO SEBAGAI BAHAN BAKU BIOETHANOL","authors":"Medya Ayunda Fitri, Y. T. Rahkadima","doi":"10.30872/cmg.v5i2.6735","DOIUrl":"https://doi.org/10.30872/cmg.v5i2.6735","url":null,"abstract":"Proses pretreatment perlu dilakukan pada penggunaan ampas tebu sebagai bahan baku generasi kedua pembuatan bioethanol. Hal ini dikarenakan sebagian besar kandungan ampas tebu adalah lignoselulosa yang memiliki struktur yang kuat dan susah difermentasi. Proses pretreatment ampas tebu dengan menggunakan senyawa asam dan pemanasan gelombang mikro dilakukan dalam penelitian ini. Penelitian itu bertujuan untuk mengetahui pengaruh varibel proses yaitu konsentrasi senyawa asam (0,1; 0,4 dan 1,0 M) dan waktu reaksi (10-30 menit) terhadap komposisi produk solid yang diperoleh. Penelitian ini dilakukan dengan menggunakan reaktor microwave yang diperoleh dengan memodifikasi microwave domestik dengan alat pengatur suhu dan kondensor refluk. Hasil penelitian menunjukkan bahwa metode yang dirancang pada penelitian ini telah berhasil mengubah struktur selulosa dan hemiselulosa pada produk yang diperoleh. Kenaikan waktu reaksi menurunkan persentase kandungan selulosa dan hemiselulosa pada produk. Pengaruh yang sama juga ditunjukan oleh perubahan konsentrasi pelarut. Kenaikan konsentrasi pelarut menyebabkan semakin kecilnya persentase selulosa dan hemiselulosa yang diperoleh. Hasil penelitian menunjukkan bahwa ukuran kristal pada ampas tebu sebelum dan sesudah reaksi mengalami penurunan. Kata Kunci: perlakuaan awal, asam, gelombang mikro, ampas tebu ","PeriodicalId":118641,"journal":{"name":"Jurnal Chemurgy","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127420408","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}

引用次数: 0

PENGOLAHAN SAMPAH PLASTIK DENGAN METODE PIROLISIS MENJADI BAHAN BAKAR MINYAK 用热解的方法将塑料垃圾加工成燃料

Jurnal Chemurgy Pub Date : 2021-06-18 DOI: 10.30872/CMG.V5I1.4755

Juliya Ascha Riandis, A. Setyawati, A. Sanjaya

{"title":"PENGOLAHAN SAMPAH PLASTIK DENGAN METODE PIROLISIS MENJADI BAHAN BAKAR MINYAK","authors":"Juliya Ascha Riandis, A. Setyawati, A. Sanjaya","doi":"10.30872/CMG.V5I1.4755","DOIUrl":"https://doi.org/10.30872/CMG.V5I1.4755","url":null,"abstract":"Masyarakat membakar plastik untuk mengurangi jumlah sampah plastik di lingkungan, padahal sampah plastik jika dibakar akan menghasilkan gas hidrogen sulfida (H2S) yang dapat menjadi racun bagi lingkungan. Sehingga dari itu dibutuhkan solusi untuk menanggulangi jumlah sampah plastik diantaranya dengan mengolah sampah plastik sebagai bahan bakar alternatif dengan pirolisis. Pirolisis merupakan suatu proses dekomposisi material dengan temperatur tinggi serta tanpa adanya O2. Tujuan dari penelitian ini yaitu untuk mengetahui perbandingan volume minyak di dalam sampah plastik berdasarkan jenis plastik yang diteliti serta mengetahui pengaruh suhu terhadap densitas, dan berat abu. Penelitian ini menggunakan dua jenis plastik yaitu jenis LDPE dan plastik campuran yaitu plastik bekas kemasan makanan dan minuman instan dengan massa setiap sampel yaitu 150 g dan perbandingan suhu 350˚C, 400˚C, 450˚C. Hasil penelitian menunjukkan perbandingan suhu terhadap densitas pada plastik LDPE, semakin tinggi suhu maka densitas semakin tinggi sedangkan pada plastik campuran apabila semakin tinggi suhu maka semakin rendah densitas. Perbandingan suhu terhadap berat abu yang didapatkan adalah pada temperatur rendah wax cenderung terbentuk dari minyak pirolisis yang dihasilkan dimana semakin besar temperatur pada proses pirolisis wax yang dihasilkan akan berkurang sedangkan sisa abu/lapisan film dari plastik campuran ada di semua variasi suhu. Perbandingan suhu terhadap volume minyak yang diperoleh adalah suhu berbanding lurus dengan volume minyak yang diperoleh.Kata Kunci: pirolisis, LDPE, densitas, abu, volume minyak","PeriodicalId":118641,"journal":{"name":"Jurnal Chemurgy","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124842351","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}

引用次数: 4