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INDONESIA
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI
Published by Universitas Diponegoro
ISSN : -     EISSN : -     DOI : -
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Chemistry Engineering Industrial & Manufacturing Engineering
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI adalah jurnal yang diterbitkan oleh Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro untuk mempublikasikan karya ilmiah - karya ilmiah mahasiswa Program S1 Teknik Kimia Undip.
Arjuna Subject : -
Articles 24 Documents
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Search results for , issue "Volume 2, Nomor 3, Tahun 2013" : 24 Documents clear
SINTESIS SELULOSA DIASETAT DARI ECENG GONDOK (Eichhornia crassipes) DAN POTENSINYA UNTUK PEMBUATAN MEMBRAN Richa Rachmawaty; Metty Meriyani; Slamet Priyanto
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 2, Nomor 3, Tahun 2013
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro,

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Abstract

Water hyacinth population that continues to grow every day becomes a problem that must be solve immediately. One of the prospective utilization is synthesis cellulose diacetate based on  cellulose which containing in water hyacinth. The purpose of this research are to determine the potential of water hyacinth in the manufacture of membranes and determine the effect of polymer concentration and evaporation time on membrane performance. In this research, there were two series of experiments, synthesis of cellulose diacetate from water hyacinth and manufacture of membranes. Synthesis cellulose diacetate was done by two steps, cellulose insulation and cellulose acetylation. While, manufacture of membranes was done by phase inversion method, where the parameters that will be examined is the optimization point of polymer concentration 13, 14 and 15% weight as well as  evaporation time 0, 5, 10 and 15 seconds. Cellulose diacetate used as polymer, with acetone as solvent and polyethylene glycol (PEG) as additives. Characterization of membrane was done by measuring flux and rejection to separate humic acid water, and analysis using FTIR and SEM. The results showed that water hyacinth can be utilized as cellulose diacetate and has potential to be used as membranes. In addition, it can be concluded that the concentration of polymer and evaporation time have an affect to the performance of the membrane where the greater concentration of the polymer and the longer of the evaporation time caused the morphological structure of the membrane will be more dense and pores become smaller, so flux getting smaller while the rejection getting larger. Membrane with 15 %wt polymer concentration and 10 seconds evaporation time produces the best performance with flux 460,54 L/m2.hour and rejection 64,28%.
PEMANFAATAN MEMBRAN MIKROFILTRASI UNTUK PEMBUATAN REFINED CARRAGEENAN DARI RUMPUT LAUT JENIS Euchema cottonii Novianto D K; Y. Dinarianasari; Aji Prasetyaningrum
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 2, Nomor 3, Tahun 2013
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro,

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Abstract

Indonesia merupakan salah satu negara penghasil rumput laut terbesar di dunia. Hal ini merupakan satu potensi ekonomi yang sangat besar karena pengolahan rumput laut menjadi tepung karaginan murni mampu menaikkan nilai tambah rumput laut. Karaginan merupakan senyawa hidrokoloid dari rumput laut merah (Rhodophyceae). Salah satu rumput laut merah penghasil karaginan adalah Euchema cottonii. Namun teknologi pasca panen yang ada masih kurang baik sehingga mutu karaginan Indonesia dinilai masih kurang memenuhi standar yang ada. Proses yang digunakan oleh industri secara umum adalah filtrasi dengan bantuan filter aid. Proses ini mempunyai kelemahan karena mempengaruhi kualitas produk yang dihasilkan. Oleh karena itu penelitian ini bertujuan untuk menentukan kondisi yang berpengaruh pada proses filtrasi dan membandingkan produk karaginan hasil mikrofiltrasi. Metode yang digunakan antara lain ekstraksi alkali panas dan proses mikrofiltrasi. Berdasarkan hasil penelitian, filter dengan ukuran pori 2,5 mikron fluks paling baik diperoleh pada konsentrasi 0.3 % berat dan filter dengan ukuran pori 20 mikron fluks paling baik pada konsentrasi 0.2 % berat yang nilainya masing-masing sebesar 2.085 ml/cm2.s dan 4.0662 ml/cm2.s. Hasil uji karakterisasi yang  meliputi uji viskositas, kadar sulfat dan kekuatan gel menunjukkan bahwa karaginan murni proses mikrofiltrasi dengan ukuran pori filter 2,5 mikron memberikan hasil yang lebih baik dibandingkan dengan karaginan murni dari proses mikrofiltrasi dengan ukuran pori filter 20 mikron.
PENGARUH INITIAL MOISTURE CONTENT DAN MASSA TEPUNG PADA PROSES PENGERINGAN TEPUNG TAPIOKA MENGGUNAKAN PENGERING UNGGUN FLUIDISASI Ika Permatasari; Laela Khaerunnisa Eugenia; S Suherman
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 2, Nomor 3, Tahun 2013
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro,

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Abstract

In tapioca starch home industry, flour drying still using conventional drying which relies on sunlight that cause product quality not uniform and under standard. From conventional drying weakness, fluidized bed drying technology can be applied to flour drying. The purpose of this research is to make drying curve, studied the effect of feed mass and initial moisture content to drying, and quality test of tapioca starch product. In this study, dependent variables are operating temperature 60 °C, drying air flow rate 2,7 m/s, operation time 45 minutes, and humidity inlet air. The independent variables are initial moisture content and feed mass.The result obtained is the value of RH and T air dryer air dryer exit out obtained through the curve will show the rate of drying. Analysis of products made with white test, starch content, moisture content, and fiber content. During drying process, relative humidity and humidity of outlet drying air are decreases, while temperature outlet drying air is increase. The effect of mass feed to moisture content product profile is the less of mass feed to be dried, and flour can dry faster. The effect of mass feed to drying rate is the less mass feed to be dried, the higher drying rate.
PENINGKATAN KUALITAS BIOGAS DENGAN PENGATURAN RASIO NUTRISI DAN pH Ervid Mifthah P.; Hastih Dwi S.; Agus Hadiyarto
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 2, Nomor 3, Tahun 2013
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro,

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Abstract

Biogas is one of alternative fuel which is cheap and environment welfare. Component of biogas are CH4, CO2, N2, H2, O2, and H2S. Besides of methane the other content is much in biogas is carbondioxide as a pollutanttha is off 10%-55%. If the carbondioxide in biogas is too much, that can decrease of heat value or biogas quality. Improve of biogas quality can be conducted by way of regulating nutrient ratio and start up pH .The purpose of this reseaarch are to know the methane produced by differences nutrient and start up pH The result of the research are at start up pH 9 methane’s volume is 1823 ml, at start up pH 8 methane’s volume is 523 ml, and at start up pH 7 methane’s volume is 1202 ml.0,013 m3 of  methane is produced per gram ofCODMn removed.At nutrient ratio C/N:P is 43:1 methane’s volume is 523 ml, at nutrient ratio C/N:P is 42:1 methane’s volume is 773 ml, and at nutrient ratio C/N:P is 41:1 methane’s volume is 1823 ml. The best quality of biogas is obtained at the start up pH is 7 and the ratio of C/N:P is 41:1 with methane's composition is 96.64% and carbon dioxide's composition is 2,94%.

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