Konversi最新文献

CHEMICAL COMPOSITION STUDY OF COAL ASH CONTENT AS POTENTIAL MATERIAL 潜在原料煤灰含量的化学成分研究

Konversi Pub Date : 2023-10-30 DOI: 10.20527/k.v12i2.16592

Karmaili Karmaili, Muthia Elma, Totok Wianto, Andy Mizwar, Nurul Huda, Satria Anugerah Suhendra, Aulia Rahma

{"title":"CHEMICAL COMPOSITION STUDY OF COAL ASH CONTENT AS POTENTIAL MATERIAL","authors":"Karmaili Karmaili, Muthia Elma, Totok Wianto, Andy Mizwar, Nurul Huda, Satria Anugerah Suhendra, Aulia Rahma","doi":"10.20527/k.v12i2.16592","DOIUrl":"https://doi.org/10.20527/k.v12i2.16592","url":null,"abstract":"Coal in Indonesia is used as fuel for power plants to support the availability of electricity. Besides that, several industries such as the cement, paper, textile, and fertilizer also use coal as fuel for production process. Due to that the coal waste such as ash was generating as increasing coal usage. Therefore, further research was carried out to investigate ash content and chemical composition of coal with various types of calories in the South Kalimantan and Central Kalimantan. In addition, this study provides information about management and potential processing of coal ash so that environmental pollution able to minimized. The method used to obtain primary data to determine the content of each parameter is by direct testing on each parameter for variations in the type of coal calorie. As a result, coal with low to high value has a percentage of ash content, respectively 2.5%; 2.3% and 9.7% and mineral content, respectively 77.40%; 0,96% and 95.06%. As well as the chemical composition of coal for SiO2, respectively 26.56%; 30;50% and 58.76%, Al2O3 respectively 11.14%, 12.41% and 28.86%, Fe2O3 respectively 16.12%, 16.40% and 4.24%. CaO and TiO2 respectively 0.50%, 0.64% and 1.53%. The results obtained, namely the value of ash content and the amount of minerals show an increase in each variation of the type of coal calories as well as the economic value shows a graph that always increases.","PeriodicalId":32236,"journal":{"name":"Konversi","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136069247","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

Making Methane Gas from CO2 using Ni/Al2O3 Catalyst in a fixed bed reactor 用Ni/Al2O3催化剂在固定床反应器中从CO2制甲烷气

Konversi Pub Date : 2023-10-30 DOI: 10.20527/k.v12i2.17111

Tasya Dwi Yuliani, Robert Junaidi, Anerasari Meidinariasty

{"title":"Making Methane Gas from CO2 using Ni/Al2O3 Catalyst in a fixed bed reactor","authors":"Tasya Dwi Yuliani, Robert Junaidi, Anerasari Meidinariasty","doi":"10.20527/k.v12i2.17111","DOIUrl":"https://doi.org/10.20527/k.v12i2.17111","url":null,"abstract":"CO2 emissions are a component of greenhouse gases, it is estimated that around 18.35 billion tons of CO2 are released each year (Sulistyono, 2012). This is the result of the global economic recovery from the COVID-19 pandemic. IEA data shows that industrial processes and energy combustion account for nearly 89% of the energy sector's greenhouse gas emissions by 2021, with greenhouse gas emissions from gas combustion of just 0.7%. Converting CO2 to chemicals, or hydrogenating CO2 to methane, is one way of reducing CO2 in the atmosphere. Many studies have been conducted on how CO2 turns into CH4 using various methods, catalysts and other variables. The aim of this research is to make a fixed reactor bed for CO2 methanation. In addition, this research will use a nickel catalyst with alumina support (Al2O3).The method used is in situ. In this study, CO₂ was used as a raw material with a Ni/Al2O3 catalyst. The NaOH concentration was adjusted with variations of 1M, 1.5M, 2M, 2.5M, 3M. The CO2 flow rate was adjusted with 0.1 L/Minute, 0.2 L /Minute, 3 L/Minute Operating Time 60 minutes at 55°C. For the analysis of the Methane (CH) gas produced, it will be analyzed using a Multi Gas Detector Analyzer.","PeriodicalId":32236,"journal":{"name":"Konversi","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136068723","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

Effect of Si/Al Molar Ratio on Zeolite Synthesis from Nipah Leaf and Used Canned Alumunium 硅铝摩尔比对尼帕叶和废铝罐头合成沸石的影响

Konversi Pub Date : 2023-10-30 DOI: 10.20527/k.v12i2.16985

Arsita Nur Rizkia Putri, Ilma Fadlilah, Oto Prasadi

引用次数: 0

VALIDASI METODE ANALISIS LOGAM Pb DALAM LIMBAH LABORATORIUM PADA FITOREMEDIASI ECENG GONDOK (EICHORNIA CRASSIPES) DENGAN SPEKTROFOTOMETRI UV-VIS 将Pb的金属分析方法与UV-VIS摄谱分析应用于我们的外部利益

Konversi Pub Date : 2023-10-30 DOI: 10.20527/k.v12i2.17051

Lina Malina, Yayan Kamelia

{"title":"VALIDASI METODE ANALISIS LOGAM Pb DALAM LIMBAH LABORATORIUM PADA FITOREMEDIASI ECENG GONDOK (EICHORNIA CRASSIPES) DENGAN SPEKTROFOTOMETRI UV-VIS","authors":"Lina Malina, Yayan Kamelia","doi":"10.20527/k.v12i2.17051","DOIUrl":"https://doi.org/10.20527/k.v12i2.17051","url":null,"abstract":"Pb merupakan salah satu logam yang sangat berbahaya, Pb dalam limbah laboratorium temasuk kategori limbah B3 bahan berbahaya dan beracun. Oleh karena itu Limbah laboratorium perlu dilakukan proses pengolahan terlebih dahulu. Salah satu proses pengolahan dengan cara fitoremediasi menggunakan media eceng gondok yang dianggap sebagai gulma dengan metode analisis yang tepat. Menurut Standar Nasional Indonesia SNI 8910-2021, cara uji analisis logam pada limbah dengan menggunakan Spektrofotometer Serapan Atom atau Inductively Coupled Plasma Optional Emission Spectrometric. Meskipun kedua metode ini sudah tervalidasi, namun ketersediaannya sangat terbatas. Dengan demikian diperlukan metode alternatif lain yang dapat digunakan untuk analisis logam Pb. Metode alternatif lain yang dapat digunakan untuk analisis Pb adalah Spektrofotometri UV-Vis. Tujuan peneltian ini untuk memvalidasi metode analisis logam Pb dalam limbah laboratorium pada fitoremediasi eceng gondok dengan menggunakan metode Spektrofometri UV-Vis. Validasi metode analisis Pb dengan Spektrofotometri UV-Vis mempunyai linearitas yang baik dengan koefisien korelasi sebesar 0,9919, akurasi sebesar 103,17%, presisi sebesar 0.8129%, limit deteksi sebesar 0,5667 ppm sedangkan limit kuantifikasi sebesar 1,889 ppm. Berdasarkan hasil uji parameter validasi tersebut dapat disimpulkan bahwa metode analisis logam Pb dalam limbah laboratorium pada fitoremediasi eceng gondok dengan spektrofotometri UV-Vis memenuhi kriteria yang ditetapkan. Hasil Penelitian ini menjadi alternatif penanganan limbah yang ramah lingkungan dengan metode analisis yang efektif dan efisien.","PeriodicalId":32236,"journal":{"name":"Konversi","volume":"18 12","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136068819","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

CATALYTIC CRACKING OF CRUDE PALM OIL USING Cr/PALM SHELL CHARCOAL IMPREGNATION CATALYST 铬/棕榈壳炭浸渍催化剂对粗棕榈油的催化裂化

Konversi Pub Date : 2023-10-30 DOI: 10.20527/k.v12i2.15893

Nazarudin Nazarudin, Hadistya Sundari, Adrima Putra

引用次数: 0

CONVERSION OF WASTE POLYPROPILENE (PP) USING THE ZEOLITE Ni/ZSM-5 TO LIQUID FUEL 利用Ni/ZSM-5沸石将废聚丙烯(PP)转化为液体燃料

Konversi Pub Date : 2023-10-30 DOI: 10.20527/k.v12i2.15972

Ramli Thahir

引用次数: 0

CHARACTERIZATION OF CORN STARCH EDIBLE FILMS BY THE ADDITION OF CHITOSAN AS A VEGETABLE OIL PACKAGING MATERIAL 添加壳聚糖作为植物油包装材料对玉米淀粉可食用薄膜的表征

Konversi Pub Date : 2023-10-30 DOI: 10.20527/k.v12i2.15959

Doni Rahmat Wicakso, Dwi Fortuna, Ivan Aldino Hernadin

{"title":"CHARACTERIZATION OF CORN STARCH EDIBLE FILMS BY THE ADDITION OF CHITOSAN AS A VEGETABLE OIL PACKAGING MATERIAL","authors":"Doni Rahmat Wicakso, Dwi Fortuna, Ivan Aldino Hernadin","doi":"10.20527/k.v12i2.15959","DOIUrl":"https://doi.org/10.20527/k.v12i2.15959","url":null,"abstract":"Abstract - Vegetable oil packaging materials use a type of synthetic polymer that is harmful to the body and the environment. Edible film as an environmentally friendly packaging material can be a solution for vegetable oil packaging material. Edible films are made from natural ingredients such as starch and chitosan. The objective of this study is to determine the best conditions of addition of chitosan in making edible film in terms of its physio-chemicals and determine the best glycerol concentration in terms of its physical properties. The composition of raw materials in the form of corn starch is 5 grams and the composition of chitosan is (0,5%, 1% and 1,5% b/v). Glycerol concentrations vary in (4%, 5% and 6% v/v). the result of the analysis of the physical properties of the edible film through the analysis of the physical tensile strength test, namely the best composition on the addition of 1 gr chitosan as well as the elongation analysis at termination. Analysis of the solubility of the edible film at a concentration of 1 gr as well the analysis of water vapor permeability. Whereas the analysis of the best antioxidant capacity in the composition of chitosan is 1,5 gr. Keywords: corn starch, chitosan, edible film","PeriodicalId":32236,"journal":{"name":"Konversi","volume":"184 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136068755","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

BIOSYNTHESIS OF SILVER NANOPARTICLES USING LEAVES EXTRACT OF JATROPHA CURCAS L 麻疯树叶提取物生物合成纳米银的研究[j]

Konversi Pub Date : 2023-10-30 DOI: 10.20527/k.v12i2.16610

Dennis Farina Nury

引用次数: 0

Performance of diesel engine with biodiesel fuel from cooking oil 以食用油为原料制备生物柴油的柴油机性能

Konversi Pub Date : 2023-05-28 DOI: 10.20527/k.v12i1.15098

Marlinda Marlinda, S. Suparno, R. Ramli, M. Irwan, M. K. Yandi

{"title":"Performance of diesel engine with biodiesel fuel from cooking oil","authors":"Marlinda Marlinda, S. Suparno, R. Ramli, M. Irwan, M. K. Yandi","doi":"10.20527/k.v12i1.15098","DOIUrl":"https://doi.org/10.20527/k.v12i1.15098","url":null,"abstract":"Biodiesel from used cooking oil is a very potential material to replace diesel fuel. Besides being cheap, it can also reduce waste. The purpose of the study was to determine the performance of the Nissan SD22 diesel engine on the use of biodiesel as fuel and the optimum composition of biodiesel and diesel mixtures. The results of the diesel engine performance show that a high rotational speed of 2800 rpm could produce a torque of 112 N.m at B10, while the results for the power parameter at a rotational speed of 2750 rpm produced a large power of 33.46 KW for B10. As for fuel consumption for a rotation speed of 2750 rpm, B10 fuel provided 0.293 kg/(kW.hour) of specific fuel while Pertamina Dex requires 0.310 kg/(kW.hour) of specific fuel, meaning that the use of B10 saved 5.48% more than B10. As for fuel consumption for a rotation speed of 2750 rpm, B10 fuel provides 0.293 kg/kW.hour of specific fuel while Pertamina Dex requires 0.310 kg/kW.hour of specific fuel, meaning that the use of B10 saves 5.48% more than B10. Biodiesel B10 is able to provide good performance for use as a diesel engine fuel. The resulting gas emissions are smaller than diesel emissions. This proves that biodiesel is an environmentally friendly fuel.","PeriodicalId":32236,"journal":{"name":"Konversi","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90611943","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

Production of biogas from coffee husk waste with rumen fluid and mixture of rumen fluid and cow dung 利用咖啡壳废物与瘤胃液及瘤胃液与牛粪的混合物生产沼气

Konversi Pub Date : 2023-05-11 DOI: 10.20527/k.v12i1.15810

H. Anwar, Ridho Ulya, Miftahul Djana, R. Mayasari

引用次数: 0