Article Per Year (5 Year)
p-Index From 2021 - 2026
1.116
P-Index
This Author published in this journals
All Journal JOURNAL OF COASTAL DEVELOPMENT Reaktor International Journal of Science and Engineering (IJSE) International Journal of Renewable Energy Development TEKNIK JURNAL TEKNOLOGI KIMIA DAN INDUSTRI IPTEK The Journal for Technology and Science Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik Agrointek Bulletin of Chemical Reaction Engineering & Catalysis Seminar Nasional Teknik Kimia Kejuangan Majalah Ilmiah MOMENTUM Jurnal Aplikasi Teknologi Pangan Communications in Science and Technology Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia JURNAL PANGAN Jurnal Inovasi Teknik Kimia Jurnal Pasopati : Pengabdian Masyarakat dan Inovasi Pengembangan Teknologi Jurnal Profesi Insinyur Indonesia Journal of Bioresources and Environmental Sciences Bulletin of Chemical Reaction Engineering & Catalysis
M. Djaeni
Department Of Chemical Engineering ; Faculty Of Engineering; Diponegoro University Jl Prof H. Soedharto, SH, Tembalang Semarang, Indonesia Phone: +62247460058; Facs: +62247460055
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Social Sciences Transportation Other

Published : 43 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 43 Documents
Search

 1   2   3   4   5 
PENGERINGAN KARAGINAN DARI RUMPUT LAUT Eucheuma Cottonii PADA SPRAY DRYER MENGGUNAKAN UDARA YANG DIDEHUMIDIFIKASI DENGAN ZEOLIT ALAM M. Djaeni; A. Prasetyaningrum1; A. Mahayana
JURNAL ILMIAH MOMENTUM Vol 8, No 2 (2012)
Publisher : Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36499/jim.v8i2.428

Abstract

Tinjauan: Kualitas Produk dan Efisiensi Energi Proses pengeringan dengan suhu tinggi akan menurunkan kualitas karaginan yang dihasilkan. Penelitian ini membahas penggunaan spray dryer yang dilengkapi dengan sistem adsorpsi menggunakan zeolit untuk pengeringan karaginan. Pada proses ini udara sebagai media pengering dikontakkan dengan zeolit untuk menurunkan kelembabannya. Kelembaban udara yang rendah akan meningkatkan driving force proses pengeringan, sehingga proses dapat dijalankan secara lebih efisien pada suhu yang lebih rendah dari pengeringan konvensional. Aspek yang dikaji pada penelitian ini adalah pengaruh suhu operasi dan kecepatan linier udara terhadap evaluasi efisiensi energi, mutu dan kadar air produk. Hasil menunjukkan bahwa semakin tinggi suhu dan kecepatan udara pengering, proses pengeringan akan lebih cepat. Pada suhu 125°C dan kecepatan udara 14 m/detik dihasilkan karaginan dengan kadar air 11,35%, kekuatan gel 116 g/cm2 dengan efisiensi rendemen produk 0,92, serta efisiensi energi 83,52%.Kata kunci : pengeringan; spray dryer; dehumidifikasi; karaginan; zeolit.
PENGERINGAN GABAH MENGGUNAKAN ZEOLIT 3A PADA ALAT UNGGUN TERFLUIDISASI Djoko Mulyono; Jefri Chandra Runanda; R Ratnawati; M. Djaeni
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 2, Nomor 2, Tahun 2013
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro,

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (214.533 KB)

Abstract

Indonesia sebagai negara agraris memiliki tanah yang subur dan hasil pertanian yang melimpah, salah satu hasil pertanian tersebut adalah gabah. Produksi gabah di Indonesia termasuk tiga besar penghasil gabah dunia. Penanganan gabah di Indonesia sering kali terkendala dengan masalah pengeringan. Masih banyak di Indonesia para petani menggunakan cahaya matahari sebagai media pengering, tentu hal ini tidak selalu menguntungkan karena cuaca di Indonesia tidak selalu cerah dan pengeringan menggunakan cahaya matahari ini membutuhkan waktu yang lama, sehingga dibutuhkan proses pengeringan yang lebih efisien dari segi energi dan waktu pengeringan, maka dari itu digunakan pengeringan dengan menggunakan zeolit sintetis. Pada proses pengeringan ini lebih efisien karena proses perpindahan panas dan massa terjadi secara simultan di dalam unggun terfluidisasi. Bahan yang dikeringkan dikontakkan dengan gas panas sehingga dengan panas tersebut dapat menguapkan uap air yang terdapat pada bahan dan dengan ditambahakannya zeolit sehingga udara menjadi lebih kering yang dapat mempercepat proses pengeringan sehingga lebih efisien. Pada pengeringan ini digunakan beberapa variabel diantaranya suhu 30-60oC, flow rate udara 2-5 m/s dan perbandingan gabah dan zeolit 40, 60, 80 dan 100 % gabah dan variabel yang diamati adalah 5 gr gabah setiap 5 menit. Dari hasil percobaan diperoleh temperatur yang baik untuk proses pengeringan adalah pada suhu 60oC, untuk variabel flow rate yang paling baik adalah pada kecepatan udara sebesar 5 m/s dan untuk variabel perbandingan gabah dan zeolit yang paling baik adalah pada perbandingan gabah : zeolit sebesar 40 : 60.
PENINGKATAN KUALITAS GABAH DENGAN PROSES PENGERINGAN MENGGUNAKAN ZEOLIT ALAM PADA UNGGUN TERFLUIDISASI Rohmat Figiarto; Sheila Luvi Galvani; M. Djaeni
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 1, Nomor 1, Tahun 2012
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro,

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (156.433 KB)

Abstract

One of problem in paddy production in Indonesia is at paddy grain drying process. This far, farmers in indonesia are very dependent on sun rays to dry their paddy grain, therefore, when the rain season comes, they find it hard to dry it. Also, the quality of sun drying is considered low. The goals of this research are to dry paddy grain in fluidized bed using natural zeolite to make drying process faster, to obtain the effect of operation condition to drying process, and to obtain the effect of operation condition to paddy quality. the  condition operation in this research are air temperatures (30, 40, 50, 60C), air velocity (1.5, 2, 2.5, 3 m/s),  and rasio of paddy grain to zeolite (0%, 20, 40, 60% zeolite).  this research are done by drying paddy grain in fluidized bed  in certain time until the moisture content of paddy grain  is 12 - 14%. The result of this research are as follow: at 30C Nc = 0.0054, at 60C Nc = 0.012. air velocity at 1.5 m/s  Nc = 0.0071, where at 3 m/s Nc = 0.0115. Non zeolit variable  Nc = 0.0051, where at 60% zeolite, Nc = 0.0068. From these data, we can conclude that as the air temperature, air velocity and %w zeolite increase, the drying rate will increase therefore drying process takes shorter time. The best quality of dry paddy grain is produced when the air temperature is 40C. The increasity of air velocity %w zeolite can improved the quality of paddy grain.
PEMANFAATAN MINYAK GORENG BEKAS MENJADI DETERGEN ALAMI MELALUI KOMBINASI REAKSI TRANS-ESTERIFIKASI DAN SULFONASI Aga Aulia Rahman; Galih Satrio Lelono; Mohamad Djaeni
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 2, Nomor 2, Tahun 2013
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro,

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (279.594 KB)

Abstract

Deterjen adalah produk yang banyak digunakan oleh masyarakat untuk membersihkan pakaian. Mengingat efek buruk detergen sintetis bagi alam yaitu susah terdegradasi oleh alam, maka perlu di cari inovasi pengganti bahan pembuatan detergen yang ramah lingkungan dan juga pengurangan limbah minyak goreng bekas yang cukup melimpah. Dengan dilakukannya studi ini diharapkan dapat mengetahui kondisi optimum pembuatan detergen alami dari minyak goreng bekas dengan teknologi tepat guna, serta mengetahui variabel yang berpengaruh dalam pembuatannya. Penelitian dilakukan dengan memproduksi Metil ester sulfonat (MES) sebagai bahan aktif dalam detergen dengan proses kombinasi trans-esterifikasi dan sulfonasi dengan bahan baku minyak goreng bekas yang selanjutnya di pelajari kondisi operasi dalam pembuatan detergen alami dari MES yang di campurkan bahan lain sebagi komposisi detergen tersebut. Penelitian ini mengkaji suhu operasi, %zeolit, dan kecepatan pengadukan sehingga di dapat kondisi operasi optimum dalam pembuatan detergen alami dari minyak goreng bekas. Variabel tetap yang digunakan dalam penelitian ini adalah volume MES sebanyak 100ml, berat CMC sebanyak 20%, berat soda ash sebanyak 45%, dan jenis bahan penunjang yaitu zeolit Na . Sedangkan variabel berubahnya adalah suhu operasi pada 60oC, 80oC dan 100oC, % zeolit sebanyak 10%, 20%, dan 30%, serta kecepatan pengadukan 120 rpm, 180 rpm dan 240 rpm.  Hasil penelitian menunjukkan bahwa kondisi optimum pada suhu 105°C, kecepatan pengadukan 260 rpm, dan % zeolit sebanyak 32% sehingga menghasilkan daya detergensi sebesar 46% mendekati daya detergensi surfaktan LAS murni sehingga detergen dari minyak goring bekas ini layak di gunakan. Variabel bebas yang paling berpengaruh adalah kecepatan pengadukan, di ikuti oleh %zeolit kemudian suhu.
APLIKASI SPRAY DRYER UNTUK PENGERINGAN LARUTAN GARAM AMONIUM PERKLORAT SEBAGAI BAHAN PROPELAN Cynthia Anggi Maulina; Ahdayani Rosarrah; Mohammad Djaeni
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 2, Nomor 4, Tahun 2013
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro,

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (320.627 KB)

Abstract

Ammonium perchlorate ( AP ) is an  inorganic oxidizer that is widely used as a component of rocket propellants. In this research, spray drying was used to produce crystalline AP from  its saturated solution. A method of spray dryer is viscous liquid or paste contacted with thot air co-currently. Fluid is passed at a nozzle and came out into the form of fine granules ( droplet . Drying method was conducted to run4 variables change, such as the inlet temperature (80, 90, 100, 110, 120oC), flow rate air dryer (9,1 and 16.3 m/s), the material flow rate (5.5 and 5.8 ml/s) and material concentration (5, 10, 15, 20, 25% salt). The drying process lasts for 13 minutes and divided into 3 minutes of time spraying and 10 minutes for residence time in a spray dryer column.At a temperature of80° C, the concentration of20%, materialflow rateof 5.5ml/sand aair flow rate of9.1m /sobtainedsaltparticlediameterof67.144µmthen calculatesimilarityusingWebernumber, obtainedAPdiameter of42.79µm.While ata temperature of 100° C, the concentration of20%, with asame material and air flow rate,obtaineddriedsaltparticle diameterof23.433µm.Afterwards,similaritycalculationusing theWebernumberobtainedAPdiameter13.877µm. It can be seenthatthe result ofAPdiametersmaller than thediameter of theparticlesinLAPAN (National Aeronautics and Space Institute), rangedbetween100-170µm. We can conclude that the higher concentration of salt solution, then the diameter of products are also getting bigger. The higher temperature then the diameter of products are getting smaller. Calculation of similarity both ammonium perchlorate and salt with the weber number has the same graph trends.
PROSES PENGERINGAN JAMUR LINGZHI (GANODERMA LUCIDIUM) MENGGUNAKAN MEDIA UDARA YANG DIDEHUMIDIFKASI OLEH ZEOLIT ALAM M. Ikhwan Shofarudin; Tri Nugroho; M. Djaeni
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 1, Nomor 1, Tahun 2012
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro,

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (466.049 KB)

Abstract

Drying is process that establish the quality of Lingzhi mushrom and then it will influence the price of mushrom. Dryng process which did by farmer of lingshi mushrom use the light of sun which have some weakness, drying time reached 5 days, dependence on season, bigger space need to drying, and operational cost that reach 3 times more expensive in rainy season. The goals of this research are to dry lingzhi mushrom in tray dryer using natural zeolite to make drying process faster, to obtain the effect of operation condition to drying process, and to obtain the effect of operation condition to lingzhi mushrom quality. the condition operation in this research are air temperatures ( 40, 50, 60C), air velocity (6, 8, 10 m/s), and the use of natural zeolite. this research are done by drying lingzhi mushrom in tray dryer during 15 hours until the obtaine the certain moisture content. The result of this research are as follow: at air velocity 8 m/s Nc 400C = 0.0268, Nc 500C = 0.0295, Nc 600C = 0.0297. at temperature 600C obtained Nc at velocity 6 m/s, Nc = 0.0291, at velocity 8 m/s, Nc = 0.0297, and at velocity 10 m/s, Nc = 0.0315, whereas at air velocity 8 m/s with temperature 600C Non zeolite variable Nc = 0.0256, where using of zeolite, Nc = 0.0297. From these data, we can conclude that as the air temperature and air velocity increase, the drying rate will increase therefore drying process takes shorter time. Using of zeolite on drying process make it faster, The best quality of dry lingzhi mushrome with maximum moisture content 12-14% is obtained when using zeolite at air velocity 8 m/s, air temperature 600C also at air velocity 10 m/s at temperature 400C, 500C, and 600C.
PENGGUNAAN ZEOLITE SINTETIS DALAM PENGERINGAN GABAH DENGAN PROSES FLUIDISASI INDIRECT CONTACT Affian Widjanarko; R. Ridwan; M. Djaeni; R. Ratnawati
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 1, Nomor 1, Tahun 2012
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro,

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1023.06 KB)

Abstract

Drying grain commonly used in Indonesia is drying by using sunlight. Drying is still constrained by the type of season. The research objective to accelerate the use of zeolite grain drying process, determine the relationship inlet air temperature dryer drying rate, and determine the relationship of the inlet air flow rate of air at the rate of drying. The operating conditions in this experiment is the drying air temperature ((30oC; 40oC; 50oC and 60oC),  drying air flow rate (1 m / s; 1.5 m / s, 2 m / s and 2.5 m / s) and zeolite 1 kg. The research was carried out by flowing dry air at specific operating conditions and then brought into contact with the grain in the fluidized bed to obtain the water content of 12-14%. The results obtained indicate the temperature of 30oC, Nc = 0.0082, while the temperature of 60oC, Nc = 0.0138. In the air flow rate of 1 m / s, Nc = 0.0094 while the air flow rate of 2.5 m / s, Nc = 0.0118. From this data it can be concluded that the higher the temperature and the rate of air dryer, the drying rate wil be faster.
PENGARUH KONDISI OPERASI PADA PROSES PENGERINGAN KARAGENAN DENGAN FOAM Verona Amelia; Bery Kristanti; Moh. Djaeni
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 2, Nomor 4, Tahun 2013
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro,

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (461.479 KB)

Abstract

Foam mat drying is an option to speed up the drying process to maintain quality carrageenan. In this case, carrageenan mixed with egg white (albumin) as a foaming agent and methyl cellulose as a foam stabilizer. Carrageenan gel foam will break and create a porous structure so that a higher surface area for moisture transfer. Drying is carried out at various compositions (comparison agent and foam stabilizer), the air temperature and the thickness of the foam. Decrease in water content determined during the drying period. The results showed that the egg whites be stabilized with methyl cellulose can accelerate the rate of drying and drying time of carrageenan. Result show that at 80oC operating temperature and thickness of 2 mm carrageenan in the presence of egg whites 20% and 10% methyl cellulose, moisture diffusion and drying rate can be twiced compared with carrageenan drying without foam.
PENGGUNAAN ZEOLITE SINTETIS DALAM PENGERINGAN GABAH DENGAN PROSES FLUIDISASI INDIRECT CONTACT Affian Widjanarko; R Ridwan; M. Djaeni; R Ratnawati
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 2, Nomor 2, Tahun 2013
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro,

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (985.719 KB)

Abstract

Grain drying process being one of the constraints experienced by grain farmers in Indonesia. This is because the farmers still rely on the sun to dry their grain crops. Meanwhile, the drying is still constrained by the type of season. Drying by fluidization processes using zeolite considered an alternative to grain drying process. The purpose of this research, make use of zeolite to accelerate the drying of grain, determine the relation of drying air temperature with drying rate and determine the relation of air flow rate into the dryer with drying rate. The operating conditions in this experiment is the drying air temperature 30oC; 40°C; 50oC and 60oC), drying air flow rate (1 m/s; 1,5 m/s; 2 m/s and 2,5 m/s) and 1 kg of zeolite. The research was conducted by flowing dry air at a specific operating conditions and then contacted with the grain in the fluidized bed to obtain the water content of 12-14%. The results obtained indicate the temperature of 30oC, Nc = 0,0082, while the temperature of 60°C, Nc = 0,0138. In the air flow rate of 1 m/s, Nc = 0,0094 while the air flow rate of 2,5 m/s, Nc = 0,0118. From this data it can be concludedthatthe higher the temperature and the rate of the air dryer, the drying rate will be faster, so as to make the drying process faster.
Corn Drying with Zeolite in The Fluidized Bed Dryer under Medium Temperature Mohamad Djaeni; Nurul Aishah Aishah; Harum Nissaulfasha; Luqman Buchori
IPTEK The Journal for Technology and Science Vol 24, No 2 (2013)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20882033.v24i2.182

Abstract

Drying is an important step to find high quality of corn. Based on Standard of National Industry, populer as SNI, number 01-3920-1995, the corn was well stored at moisture content 14% or below (wet basis). However, conventional corn drying dealed with in-efficient energy process and corn quality degradation. This research evaluated the performance of corn drying assisted by zeolite as moisture adsorbent. In this process, the zeolite and corn were placed in the dryer fluidized by warm air as drying medium under 40 - 50oC. The air evaporated water product from corn, and at same time the zeolite adsorbed moisture in air. So, the relative humidity of air in dryer can be kept low in which enhanced the driving force for drying. Beside that, the moisture adsoprtion by zeolite was exothermic process that can supply the energy for drying or keep the dryer temperature. Thus, the drying rate can be faster. This work foccussed to observe the effect of drying temperature, air velocity, and corn to zeolite ratio on drying time as well as corn quality. As indicators, the drying rate was estimated and the proxymates content such as protein, fat, and carbohydrate content were analyzed. The results showed that compared with conventional fluidised bed dryer, corn drying with zeolite, can speed up drying time as well as improving the constant of drying rate. In addition, the corn proximate nutrition content can be well retained. At operating temperature 40oC, air velocity 9 m.s-1, and zeolite to corn ratio 1:2, the drying time can be 60 minutes shorter compared to that without zeolite.
Co-Authors . Widayat A. Agusniar A. Mahayana A. Nurhasanah A. Prasetyaningrum1 A. Sutanto Affian Widjanarko Affian Widjanarko Aga Aulia Rahman Ahdayani Rosarrah Ahmad M. Fuadi Ainiyyah Fatin Ajeng Yulianti Dwi Lestari Aji Prasetyaningrum Andri Cahyo Kumoro Annisa, Arianti Nuur Aprilina Purbasari Azafilmi Hakiim Berkah Fajar Tamtomo kiono Bery Kristanti Cindi Yasintasia Cynthia Anggi Maulina D. Setyani Dessy Agustina Sari Dewi Ayuningtyas Djoko Mulyono Febiani Dwi Utari Febiani Dwi Utari Febiani Utari Galih Satrio Lelono H Hadiyanto Hadiono Soegeng Rahardjo Hargono . Hargono Hargono Hargono Hargono Hargono Hargono Hartono, Damin Harum Nissaulfasha Ismi Ari Fitria Jefri Chandra Runanda Jumali Jumali Kristin Valentina Sinabutar Laeli Kurniasari Lisna Krisan Wibowo Listyadevi, Yuniar Luthfia Luqman Buchori M. Ikhwan Shofarudin Maharani Ratridewi Maulana, Kemal Meilya Suzan Triyastuti, Meilya Suzan N. Asiah Nita Ariani Novita, Dewi Ayu Nurul Aishah Aishah Nurul Asiah Nurul Asiah Prakoso, Satrio Budi R Ridwan R. Ridwan Rahmat Hidayat Raka Dimas Saputra Ratnawati Ratnawati Rohmat Figiarto S Suherman Sari, Anisa Rachma Setia Budi Sasongko Sheila Luvi Galvani Siqhny, Zulhaq Dahri Suci Dhiya Mayra Suherman Sumirat Sumirat Tri Nugroho Uma Fadzilia Arifin Uma Fadzilia Arifin, Uma Fadzilia Utari, Febiani Utari, Febiani Dwi Vera Pangni Fahriani Verona Amelia Vita Efelina Wiratno Wiratno