Journal of Chemical Engineering & Process Technology最新文献

{"title":"Pemodelan Empirik Desulfurisasi Batubara Secara Flotasi Dengan Metode Rayleigh","authors":"Andi Aladin","doi":"10.33536/jcpe.v5i1.567","DOIUrl":"https://doi.org/10.33536/jcpe.v5i1.567","url":null,"abstract":"Model empirik penting untuk diciptakan berdasarkan data empirik berupa data penelitian atau pengamatan yang diperoleh guna mengungkapkan dalam bahasa matematik terhadap fenomena riil (empirik) yang diamati. Model empirik bermanfaat untuk mengeneralisasi suatu fenomena, sehingga dengan model empirik tersebut bisa dilakukan prediksi baik secara ekstrapolasi maupun intrapolasi hingga pada batas tingkat toleransi tertentu. Dalam artikel ini disajikan langkah-langkah menyusun model empirik berdasar data empirik hasil penelitian dengan contoh kasus fenomena desulfurisasi batubara dengan cara flotasi menggunakan surfaktan crud palm oil (CPO). Pemodelan empirik dilakukan berbasis analisis dimensi menggunakan metode Reyleigh. Diperoleh model empirik desulfurisasi batubara dengan tingkat validasi cukup baik ditandai dengan ralat cukup rendah yaitu 2,78%.","PeriodicalId":15308,"journal":{"name":"Journal of Chemical Engineering & Process Technology","volume":"37 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75507930","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":"Pengaruh Temperatur Operasi Terhadap Penurunan Kadar Biuret Dalam Urea Prill dari Evaporator Tingkat II di PT. Pupuk Kaltim","authors":"Mimin Septiani, Dhasvianty Dhasvianty, R. Ratnawati","doi":"10.33536/jcpe.v5i1.538","DOIUrl":"https://doi.org/10.33536/jcpe.v5i1.538","url":null,"abstract":"Biuret merupakan hasil samping dalam sintesa pembentukan urea. Kandungan biuret yang tinggi dalam produk urea dapat menjadi racun bagi tanaman sehingga keberadaan biuret harus ditekan. Salah satu faktor terbentuknya biuret adalah temperatur yang tinggi. Penelitian ini bertujuan untuk menentukan temperatur operasi optimum terhadap penurunan kadar biuret dalam urea prill. Analisa dilakukan terhadap enam variabel temperatur operasi 137 oC, 138 oC, 139 oC, 140 oC, 141oC, dan 142 oC. Sampel dari Evaporator berupa produk urea prill diambil dari belt conveyor, kemudian dilakukan uji kandungan biuret menggunakan spektrofotometer dan kadar air urea prill dengan metode aquatitrator. Hasil penelitian menunjukkan bahwa temperatur operasi optimum pada evaporator adalah 138 oC, karena mampu menghasilkan kadar biuret yang rendah sebesar 0,798% dengan kadar air yang juga rendah sebesar 0,44%, dan tingkat efisiensi penggunaan steam sebesar 211,541 kg/jam.","PeriodicalId":15308,"journal":{"name":"Journal of Chemical Engineering & Process Technology","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84289525","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":"Enhancing the Uranium Recovery Performance in Gattar Pilot Plant Using Pulsed Column Technique","authors":"W. M. Morsy","doi":"10.35248/2157-7048.20.11.400","DOIUrl":"https://doi.org/10.35248/2157-7048.20.11.400","url":null,"abstract":"Comparison of various technologies for uranium recovery from sulphuric acid leach solutions shows that the moving bed systems are more effective processing routes than fixed bed. Developed system using air pulsation for resin moving was tested and examined for uranium recovery from Gattar pilot plant project (North Eastern Desert, Egypt) sulphuric acid leach liquor using Chinese resin D263B. Recovery equilibrium and kinetic isotherms are established. The obtained results showed high performance and the validity of derived pulsed resin column for uranium extraction. Elution behavior was improved by using intense fractional eluent which gives efficient results.","PeriodicalId":15308,"journal":{"name":"Journal of Chemical Engineering & Process Technology","volume":"61 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2020-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84615996","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":"Editorial Note for Journal of Chemical Engineering and Process Technology","authors":"Pratik Sarkar","doi":"10.35248/2157-7048.20.11.402","DOIUrl":"https://doi.org/10.35248/2157-7048.20.11.402","url":null,"abstract":"I am pleased to introduce Journal of Chemical Engineering & Process Technology (JCEPT) a rapid peer reviewed Journal which provides an opportunity to share the information among the medical scientists and researchers. It comes under the various field like physical science, chemistry, physics biochemistry and so on I am pleased to announce that, all issues of volume 10 were published online well within the time and the print issues were also brought out and dispatched within 30 days of publishing the issue online during the year of 2019. The Journals aims to flourish and to publish most complete and reliable source of information on the discoveries and current developments in the mode of original articles, review articles, case reports, short communications, etc. in all areas of the field and making them freely available through online without any restrictions or any other subscriptions to researchers worldwide. The Index Copernicus value of the journal is 97.45. And also the journal is indexed in Google Scholar, CAS Source Index (CASSI), Open J Gate, RefSeek, OCLC- WorldCat, Sherpa Romeo, Genamics JournalSeek, JournalTOCs, Ulrich's Periodicals Directory, Directory of Research Journal Indexing (DRJI), Hamdard University, EBSCO A-Z, Scholarsteer, Publons, Geneva Foundation for Medical Education and Research. During the calendar year of 2019, JCEPT received a total of 40 manuscript, out of which 28 articles (70%) were rejected in the preliminary screening due to plagiarism or being out of the format and peer review process. During 2019 around 10 articles were subjected for publication after they are accepted in the peer review process. In the 5 issues of Volume 10 published during the year 2019, a total of 10 articles were published (at an average of 5 articles per issue) of which, articles were published from authors all around the world. Globally articles have been accessed by the research scientists and also cited. During the calendar year 2019, a total of two Editors, five Reviewers joined the board of JCEPT and contributed their valuable services towards contribution as well as publication of articles, and their valuable reviewer comments will beneficial to publish quality of article in the Journal. I take this opportunity to acknowledge the contribution of Dr. Garry Chen during the final editing of articles published and the support rendered by the editorial assistant, in bringing out issues of JCEPT in time. I would also like to express my gratitude to all the authors, reviewers, the publisher, the advisory and the editorial board of JCEPT, the office bearers for their support in bringing out yet another volume of JCEPT and look forward to their unrelenting support to bring out the Volume 12 of JCEPT in scheduled time.","PeriodicalId":15308,"journal":{"name":"Journal of Chemical Engineering & Process Technology","volume":"24 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74191186","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":"Cellulose Acetate-Graft-Poly (Methyl Methacrylate): A andldquo;Graft fromandrdquo; Approach of Nitroxide Mediated Radical Polymerization","authors":"V. Mbah, A. Celli, R. Cipolletti, S. Sabbatini, P. Stipa","doi":"10.35248/2157-7048.20.11.399","DOIUrl":"https://doi.org/10.35248/2157-7048.20.11.399","url":null,"abstract":"Poly (methyl methacrylate) was grafted onto cellulose acetate backbone using a “graft from” of Nitroxide Mediated Radical Polymerization (NMRP). The formation of cellulose acetate-co-poly (methyl methacrylate) using N-tert-butyl- N- (1-diethylphosphono-2,2-dimethylpropyl) (SG1)-nitroxide based macroalkoxyamine system was confirmed by FTIR and NMR analyses. The copolymer exhibited living characteristics as shown by NMR. DSC investigations showed a copolymer with a rich poly (methyl methacrylate) phase around 120°C and a rich cellulose acetate phase at around 175°C.","PeriodicalId":15308,"journal":{"name":"Journal of Chemical Engineering & Process Technology","volume":"1 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89166996","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":"Optimization of the Physicochemical Parameters of Selected Crop Residues for Enhanced Biosynthetic Gas Yields","authors":"W. Wanasolo, A. Okullo, J. Masa, I. Kalega, I. Gumula, J. Opedun","doi":"10.35248/2157-7048.20.11.401","DOIUrl":"https://doi.org/10.35248/2157-7048.20.11.401","url":null,"abstract":"In this study, the influence of physico-chemical parameters; average particle size, moisture, and cellulose content on the yield of biosynthetic gas from biomass pyrolysis was investigated. Response Surface Methodology and Box-Behnken design methods were used to analyze the experimental data. The results showed that at a given average particle size, the biosynthetic gas yield increased gradually with increase in cellulose content until at cellulose content of 35% when the yield starts to decrease with further increase in cellulose content. This implies that within experimental conditions, a cellulose content of 35% was ideal for obtaining maximum biosynthetic gas yield. The variations in average particle size affected biosynthetic gas yield in such a way that at low cellulose content below 30% and for a given average particle size, the biosynthetic gas yield was nearly constant. The same trend was observed at high cellulose content beyond 40%. However, between 30% and 40% cellulose content, the biosynthetic gas yield decreased with increase in average particle size until about 1.81 mm when the biosynthetic gas yield starts to increase with increase in average particle size. This implied that the minimum biosynthetic gas yield was obtained at 1.81 mm average particle size. It was concluded that for better biosynthetic gas yields, cellulose content of 35% would be preferred at average particle sizes other than 1.81 mm which yielded lowest biosynthetic gas.","PeriodicalId":15308,"journal":{"name":"Journal of Chemical Engineering & Process Technology","volume":"8 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75052759","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":"Synthesis and Characterization of Biodegradable Blend based on LDPE/cassava stem nanofiber cellulose","authors":"L. Lismeri, Lismeri Lia, N. Herdiana, Pramita Anung putri","doi":"10.33536/jcpe.v6i1.732","DOIUrl":"https://doi.org/10.33536/jcpe.v6i1.732","url":null,"abstract":"Conventional plastic becomes trend topic due to its long degradation time and needs attention related to environmental problem. One type of plastic that is difficult to be degraded is LDPE. Some of the efforts done is to synthesize plastics with organic material so that it becomes biodegradable plastic. Cellulose is an organic material that is abundant in nature and can be used as a filler. This research aims to synthesis the biodegradable plastic films composted by nanocellulose – LDPE. Mechanical (UTM), water resistance and degradation test has been done. The properties of the biodegradable blend still meet the commercial LDPE standart. Even though the biocomposite based on LDPE-nanofiber cellulose can not totally degradable but it is can be used as a solution to reduce the degradation time of a plastic waste.","PeriodicalId":15308,"journal":{"name":"Journal of Chemical Engineering & Process Technology","volume":"61 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86041411","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":"Sintesis ZeolitT Lynde Type-A (LTA) Dari Zeolit Alam Lampung (ZAL) Menggunakan Metode Step Change Temperature Of Hydrotermal Dengan Variasi SiO2/Al2O3 Diaplikasikan Untuk Dehidrasi Etanol","authors":"S. Ginting, Devi Permata Sari, D. Iryani, Darmansyah Darmansyah, M. Hanif, Herry Wardono","doi":"10.33536/JCPE.V4I1.324","DOIUrl":"https://doi.org/10.33536/JCPE.V4I1.324","url":null,"abstract":"Zeolit Lynde Type-A (LTA) merupakan zeolit sintesis yang memiliki berbagai kegunaan antara lain sebagai adsorben, katalis, membran, penukar ion, dan molecular sieve . Sebagai molecular sieve , zeolit LTA memiliki kemampuan dehidrasi yang tinggi sehingga dapat digunakan untuk dehidrasi air dalam campuran etanol-air. Zeolit LTA tergolong dalam kadar si/al rendah, maka zeolit ini mempunyai sifat hidrofilik dan afinitas yang tinggi untuk menjerap air dalam etanol. Penelitian ini bertujuan untuk memperoleh zeolit LTA sintesis dari variasi rasio SiO 2 /Al 2 O 3 terbaik agar diperoleh persen kristalinitas yang tinggi sehingga didapatkan etanol yang sesuai dengan FGE ( Fuel Grade Ethanol ), yaitu kemurnian mencapai >99%. Variasi rasio SiO 2 /Al 2 O 3 pada penelitian ini adalah 1; 1,2; 1,4 dan 1,8 mol/mol. Sumber silika dan alumina yang digunakan berasal dari Zeolit Alam Lampung (ZAL). Tahapan sintesis dilakukan pada sebuah water bath dengan metode step change temperature pada 90 o C selama 1,5 jam dan 95 o C selama 2,5 jam. Berdasarkan analisis XRD didapatkan persen kristalinitas tertinggi pada rasio SiO 2 /Al 2 O 3 1,8 mol/mol sebesar 71,39 %. Hasil analisis FTIR terdapat ciri khas zeolit LTA yaitu adanya double rings pada bilangan gelombang 500-650 cm -1 . Hasil analisis BET didapatkan zeolit LTA berukuran mesopori dan tergolong dalam loop histerisis tipe H3. Dari hasil uji dehidrasi adsorptif etanol-air diperoleh kemurnian etanol tertinggi pada rasio SiO 2 /Al 2 O 3 1,8 mol/mol sebesar 99,56 %. Pola isoterm adsorpsi air mengikuti model isoterm Langmuir dengan nilai R 2 = 0,995, kapasitas adsorpsi q m = 0,8217 mg air/g adsorben dan intensitas adsorpsi K a = 0,0231. Kinetika adsorpsi air oleh zeolit LTA sintetis sesuai dengan model kinetika adsorpsi pseudo orde 2 dengan nilai tetapan laju reaksi sebesar 0,3065 g/(min-mg) dan nilai q e sebesar 0,2695 g air/g adsorben","PeriodicalId":15308,"journal":{"name":"Journal of Chemical Engineering & Process Technology","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73875394","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":"Perbandingan Karakteristik Biodiesel Berbahan Baku Minyak Jelantah Hasil Proses Transesterifikasi Berkatalis NaOH, CaO Superbasa, dan Zeolit","authors":"Yoel Pasae, Lise Bulo, Brigita Ivonne","doi":"10.33536/JCPE.V4I1.331","DOIUrl":"https://doi.org/10.33536/JCPE.V4I1.331","url":null,"abstract":"Salah satu faktor penentu keberhasilan dalam pengembangan proses Produksi biodiesel adalah ketersediaan katalis yang mudah diperoleh dan harganya murah. Secara umum katalis yang paling banyak digunakan dalam proses transesterifikasi adalah NaOH, namun dalam beberapa tahun terakhir penelitian untuk memanfaatkan jenis katalis lainnya seperti zeolit, dan CaO superbasa juga telah dikembangkan. Penelitian ini bertujuan untuk membandingkan karakteristik biodiesel yang diproduksi dari bahan baku minyak jelantah dengan menggunakan katalis NaOH, CaO superbasa, dan zeolit. Proses reaksi transesterifikasi dilangsungkan dalam reaktor gelas dengan tipe reaktor tangki berpengaduk pada suhu 65oC, waktu reaksi 3 jam dengan kecepatan pengadukan 200rpm. Karakteristik biodiesel yang diuji yaitu densitas, viskositas, dan angka asam. Hasil penelitian menunjukkan bahwa karakteristik biodiesel yang diperoleh dengan katalis NaOH, CaO superbasa, dan zeolit masing-masing adalah densitas (kg/m3) 872; 914; dan 918, viskositas (mm2/s) 2,93; 17,65; dan 17,34, angka asam (mg NaOH/g sampel) 0,56; 0,6; 0,6. Jika dibandingkan dengan karakteristik standar yang ditetapkan oleh Standar Nasional Indonesia (SNI) yaitu densitas 850-890, viskositas 2,3-6,0 mm2/s dan angka asam max 0,6, maka dapat disimpulkan bahwa hanya angka asam untuk biodiesel berkatalis CaO super basa dan biodiesel berkatalis zeolit yang tidak memenuhi standar SNI.","PeriodicalId":15308,"journal":{"name":"Journal of Chemical Engineering & Process Technology","volume":"71 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81519503","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":"Adsorpsi Gas CO2 Menggunakan Kapur Tohor, Arang Aktif Dan Zeolit Pada Kendaraan Bermotor Roda Dua","authors":"Rifai Ramli, A. Suryanto, S. Yani","doi":"10.33536/JCPE.V4I1.294","DOIUrl":"https://doi.org/10.33536/JCPE.V4I1.294","url":null,"abstract":"Pemanasan global yang terjadi akibat emisi gas rumah kaca merupakan salah satu persoalan yang menjadi perhatian dunia secara luas dalam dekade terakhir. Berbagai upaya pengendalian emisi gas CO2 yang menjadi komponen utama gas rumah kaca telah banyak diupayakan dan diteliti, antara lain penggunaan teknologi zero emission dan pengendalian gas CO2 pada sumber emisi. Penelitian ini difokuskan pada upaya pengurangan kandungan CO2 dari gas buang kendaraan bermotor roda dua dengan metode adsorpsi menggunakan 3 jenis adsorben (kapur tohor, arang aktif, dan zeolit), dengan variasi massa adsorben 50 gram, 100 gram, dan 150 gram. Selain itu dilakukan juga pengamatan daya adsorpsi dari campuran ketiga jenis adsorben tersebut dalam berbagai komposisi. Pengukuran emisi dilakukan sebelum dan setelah penggunaan adsorben menggunakan flux 4005 infrared multigas analyser pada menit ke 1, 5, 10, 15 dan 20. Hasil penelitian menunjukkan bahwa adsorpsi maksimal terjadi pada berat 150 gram dan menit ke 10 untuk setiap jenis adsorben. Adsorben yang paling besar daya adsorpsinya adalah kapur tohor yaitu 30,68% kemudian zeolit sebesar 28,94% dan yang paling kecil adalah arang aktif sebesar 27,45%. Komposisi campuran adsorben yang paling besar daya adsorpsinya adalah perbandingan 1 : 1 : 1 (K1Z1A1) dengan daya adsopsi CO2 sebesar 27,61%.","PeriodicalId":15308,"journal":{"name":"Journal of Chemical Engineering & Process Technology","volume":"48 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77140288","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}