Proses pirolisis limbah biomassa serbuk gergaji kayu ulin menghasilkan produk charcoal sebagai produk utama. Charcoal merupakan produk yang kaya akan carbon dan dapat digunakan sebagai sumber energi alternatif yang ramah terhadap lingkungan. Penelitian ini dilakukan dengan tujuan untuk mengetahui pengaruh penambahan gas nitrogen ke dalam reaktor pirolisis secara batch terhadap kualitas charcoal dari bahan baku limbah biomassa serbuk gergaji kayu ulin dan untuk mengetahui pengaruh penambahan gas nitrogen ke dalam reaktor pirolisis secara kontinyu terhadap kualitas charcoal dari bahan baku limbah biomassa serbuk gergaji kayu ulin. Metode Penelitian dengan cara preparasi sampel limbah biomassa serbuk gergaji kayu ulin dengan berat sampel 1000 gram, kemudian dilanjutkan dengan tahapan proses pirolisis yaitu tanpa dialirkan gas nitrogen, ditambahkan gas nitrogen secara batch kedalam reaktor dengan rasio perbandingan volume reaktor yaitu sebanyak 10 liter, 20 liter dan 30 liter serta dialirkan gas nitrogen secara kontinyu 0,5 liter/menit dan 1 liter/menit dengan waktu pirolisis 120 menit dan temperatur pirolisis yang dipertahankan yaitu 400oC, hasil pirolisis diperoleh tiga produk yaitu arang, asap cair dan sedikit tar, arang hasil pirolisis didiamkan untuk proses pendinginan selama 1 jam kemudian ditimbang beratnya dan selanjutnya arang disiapkan untuk dianalisa komposisi kimia, analisa nilai kalor, dan kadar karbon terikat dengan metode analisa proximate. Hasil penelitian ini menunjukan bahwa karakteristik charcoal yang memilki nilai fixed carbon tertinggi yaitu pada penambahan gas nitrogen secara kontinyu kedalam reaktor 1 liter/menit dengan presentase fixed carcbon 66,16%, dan menghasilkan nilai kalor 6986 cal/gr dan yang memilki presentase fixed carbon terendah yaitu tanpa penmabahan gas nitrogen kedalam reaktor dengan presentase fixed carcon 58,03% dan nilai kalor 6628 cal/gr. Berdasarkan hasil penelitian dapat disimpulkan bahwa kondisi pirolisis yang terbaik yaitu pada penambahan gas nitrogen kedalam reaktor secara kontinyu 1 liter/menit yang menghasilkan presentase fixed carbon dan nilai kalor tertinggi.
{"title":"Pengaruh Penambahan Gas Nitrogen Terhadap Kualitas Charcoal Yang Diproduksi Secara Pirolisis Dari Limbah Biomassa Serbuk Gergaji Kayu Ulin (Euxideroxylon Zwageri)","authors":"S. Hasan, Andi Aladin, Takdir Syarif, M. Arman","doi":"10.33536/jcpe.v5i1.472","DOIUrl":"https://doi.org/10.33536/jcpe.v5i1.472","url":null,"abstract":"Proses pirolisis limbah biomassa serbuk gergaji kayu ulin menghasilkan produk charcoal sebagai produk utama. Charcoal merupakan produk yang kaya akan carbon dan dapat digunakan sebagai sumber energi alternatif yang ramah terhadap lingkungan. Penelitian ini dilakukan dengan tujuan untuk mengetahui pengaruh penambahan gas nitrogen ke dalam reaktor pirolisis secara batch terhadap kualitas charcoal dari bahan baku limbah biomassa serbuk gergaji kayu ulin dan untuk mengetahui pengaruh penambahan gas nitrogen ke dalam reaktor pirolisis secara kontinyu terhadap kualitas charcoal dari bahan baku limbah biomassa serbuk gergaji kayu ulin. Metode Penelitian dengan cara preparasi sampel limbah biomassa serbuk gergaji kayu ulin dengan berat sampel 1000 gram, kemudian dilanjutkan dengan tahapan proses pirolisis yaitu tanpa dialirkan gas nitrogen, ditambahkan gas nitrogen secara batch kedalam reaktor dengan rasio perbandingan volume reaktor yaitu sebanyak 10 liter, 20 liter dan 30 liter serta dialirkan gas nitrogen secara kontinyu 0,5 liter/menit dan 1 liter/menit dengan waktu pirolisis 120 menit dan temperatur pirolisis yang dipertahankan yaitu 400oC, hasil pirolisis diperoleh tiga produk yaitu arang, asap cair dan sedikit tar, arang hasil pirolisis didiamkan untuk proses pendinginan selama 1 jam kemudian ditimbang beratnya dan selanjutnya arang disiapkan untuk dianalisa komposisi kimia, analisa nilai kalor, dan kadar karbon terikat dengan metode analisa proximate. Hasil penelitian ini menunjukan bahwa karakteristik charcoal yang memilki nilai fixed carbon tertinggi yaitu pada penambahan gas nitrogen secara kontinyu kedalam reaktor 1 liter/menit dengan presentase fixed carcbon 66,16%, dan menghasilkan nilai kalor 6986 cal/gr dan yang memilki presentase fixed carbon terendah yaitu tanpa penmabahan gas nitrogen kedalam reaktor dengan presentase fixed carcon 58,03% dan nilai kalor 6628 cal/gr. Berdasarkan hasil penelitian dapat disimpulkan bahwa kondisi pirolisis yang terbaik yaitu pada penambahan gas nitrogen kedalam reaktor secara kontinyu 1 liter/menit yang menghasilkan presentase fixed carbon dan nilai kalor tertinggi.","PeriodicalId":15308,"journal":{"name":"Journal of Chemical Engineering & Process Technology","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77145118","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}
Mimin Septiani, Dhasvianty Dhasvianty, R. Ratnawati
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.
{"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}
Pub Date : 2020-04-01DOI: 10.35248/2157-7048.20.11.400
W. M. Morsy
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.
{"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}
Pub Date : 2020-01-01DOI: 10.35248/2157-7048.20.11.402
Pratik Sarkar
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.
我很高兴向大家介绍《化学工程与过程技术杂志》(JCEPT)，这是一本快速同行评审的杂志，为医学科学家和研究人员提供了一个分享信息的机会。它属于物理科学，化学，物理生物化学等各个领域，我很高兴地宣布，第10卷的所有问题都在时间内在线出版，印刷问题也在2019年在线出版后30天内提出并发出。该期刊旨在通过原创文章、评论文章、案例报告、简短通讯等模式，在该领域的所有领域蓬勃发展并发布有关发现和当前发展的最完整和可靠的信息来源，并通过在线免费提供给全球研究人员，不受任何限制或任何其他订阅。该期刊的索引哥白尼值为97.45。并被Google Scholar、CAS Source Index (CASSI)、Open J Gate、RefSeek、OCLC- WorldCat、Sherpa Romeo、Genamics JournalSeek、JournalTOCs、Ulrich’s Periodicals Directory、Research journal Indexing (DRJI)、Hamdard University、EBSCO A-Z、Scholarsteer、Publons、Geneva Foundation for Medical Education And Research检索。2019日历年，JCEPT共收到稿件40篇，其中28篇(70%)因抄袭或格式和同行评议程序不规范在初审中被拒稿。在2019年，大约有10篇文章在同行评议过程中被接受后发表。在2019年出版的第10卷5期中，共发表了10篇文章(平均每期5篇)，其中作者来自世界各地。全球范围内的文章已经被研究科学家访问并被引用。在2019日历年度，共有2位编辑、5位审稿人加入了JCEPT的董事会，为文章的投稿和发表贡献了宝贵的服务，他们的宝贵审稿意见将有利于文章在期刊上的发表质量。我借此机会感谢Garry Chen博士在发表文章的最后编辑过程中所做的贡献，以及编辑助理在及时提出JCEPT问题方面所提供的支持。我也要感谢所有支持《JCEPT》再版的作者、审稿人、出版人、顾问和编委会、办公室负责人，并期待他们的不懈支持，使《JCEPT》第12卷如期出版。
{"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}
Pub Date : 2020-01-01DOI: 10.35248/2157-7048.20.11.399
V. Mbah, A. Celli, R. Cipolletti, S. Sabbatini, P. Stipa
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.
{"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}
Pub Date : 2020-01-01DOI: 10.35248/2157-7048.20.11.401
W. Wanasolo, A. Okullo, J. Masa, I. Kalega, I. Gumula, J. Opedun
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.
{"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}
L. Lismeri, Lismeri Lia, N. Herdiana, Pramita Anung putri
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.
{"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}
S. Ginting, Devi Permata Sari, D. Iryani, Darmansyah Darmansyah, M. Hanif, Herry Wardono
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
Zeolit Lynde typea (LTA)是一种具有多种用途的合成酶，可以作为导体、催化剂、膜、离子交换器和分子。作为分子辅助体，zeolit LTA有很高的脱水能力，因此可以在酒精混合的水中用于脱水。绿利石的含量较低，因此Zeolit具有水的特性和高度亲和力，可以在乙醇中释放水分。这项研究的目的是获得自属相2 /Al - 2 - O - 3比例的合成物，以获得最高结晶率的比例，从而获得与FGE相匹配的乙醇，即纯粹达到>99%。本研究采用SiO 2 /Al 2 O 3的变体为1;1.2;1.4和1.8摩尔。用于硅和阿卢米纳的资源来自楠榜天然Zeolit (ZAL)。合成阶段是在一个水浴中进行的，该溶液以90摄氏度的温度变化为例，持续1.5小时，95摄氏度为2.5小时。根据XRD的分析，它的晶体与SiO 2 /Al 2 O 3 1.8 mol/mol的比例为71.39 %。FTIR的分析表明，LTA zeolit的特点是波数为500-650厘米-1的双环。BET分析的结果获得了中位数的LTA zeolit，并归类为H3型歇斯底里环。从脱水补充乙醇测试中获得的纯乙醇比SiO 2 /Al 2 O 3 1.8 mol/mol占99.56 %。水异位模型遵循的是R 2 = 0.995，吸收能力qm = 0.8217 mg /g adsorben和高强度adsorben K = 0.0231。合成zeolit LTA的水调节动力学模型与pseudo方案2模型一致，其反应速度为0.3065 g/(min mg)， q e值为0.2695 g/ g adsorben
{"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}
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.
{"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}
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%.
{"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}
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