Article Per Year (5 Year)
p-Index From 2020 - 2025
0.817
P-Index
This Author published in this journals
All Journal Reaktor TEKNIK METANA Jurnal Ilmu Lingkungan JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Bulletin of Chemical Reaction Engineering & Catalysis Majalah Ilmiah MOMENTUM JITEK (Jurnal Ilmiah Teknosains) Jurnal Aplikasi Teknologi Pangan Communications in Science and Technology Abdimas UNWAHAS : Jurnal Pengabdian Masyarakat UNWAHAS Jurnal Inovasi Teknik Kimia ASEAN Journal of Chemical Engineering Jurnal Profesi Insinyur Indonesia Bulletin of Chemical Reaction Engineering & Catalysis
Nita Aryanti
Chemical Engineering Department, Faculty Of Engineering, Diponegoro University, Jl. Prof. Sudarto, Tembalang-Semarang, 50275, Telp/fax: (024)7460058/(024)76480675
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Social Sciences Transportation Veterinary Other

Published : 23 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 23 Documents
Search

 1   2   3 
PENGAMBILAN MINYAK KEDELAI DARI AMPAS TAHU SEBAGAI BAHAN BAKU PEMBUATAN BIODIESEL Buchori, Luqman; Sasongko, Setia Budi; Anggoro, Didi Dwi; Aryanti, Nita
Jurnal Ilmu Lingkungan Vol 10, No 2 (2012): Oktober 2012
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (764.317 KB) | DOI: 10.14710/jil.10.2.49-53

Abstract

ABSTRAK Kedelai adalah komoditi terbesar setelah padi di Indonesia. Kebutuhannya mencapai 2,3 juta ton per tahun. Dari jumlah tersebut 50% dikonsumsi berupa tempe, 40% berupa tahu, dan 10% berupa minyak kedelai. Dari produksi tahu, dihasilkan limbah ampas tahu. Dalam penelitian ini, lemak pada ampas tahu diekstraksi untuk mendapatkan minyak kedelai yang dijadikan bahan baku biodiesel. Hasil ekstraksi kemudian dianalisa untuk dibandingkan dengan standar bahan baku biodiesel. Penelitian ini bertujuan untuk menghitung berat lemak yang terekstrak dari ampas tahu terhadap lama waktu ekstraksi dan jenis solven yang digunakan, serta mengetahui komposisi minyak ampas tahu tersebut. Hasil penelitian menunjukan bahwa waktu ekstraksi dan jenis solven mempengaruhi jumlah lemak yang dapat terekstrak. Benzene merupakan solven yang dapat mengekstrak minyak lebih baik daripada solven toluene dan n-heksane. Solven benzene memiliki waktu optimum lima jam untuk mengekstrak lemak yang terdapat di dalam ampas tahu. Dari hasil analisa, diketahui bahwa kadar FFA minyak kedelai yang menggunakan solven benzene sebesar 4,8%, lebih kecil daripada menggunakan solven toluene (5,4%) dan n-heksan (5,8%). Sedangkan bilangan penyabunan diperoleh 184,22 mgKOH/gr untuk benzene, 193,55 mgKOH/gr untuk toluene dan 184,22 mgKOH/gr untuk n-heksan. Kandungan posfor yang didapat sebesar 0,19 untuk benzene, 0,23 untuk toluene dan 0,12% untuk n-heksan. Nilai ini masih dalam kategori besar sehingga harus melewati pretreatment terlebih dahulu sebelum melewati proses transesterifikasi menjadi biodiesel. Kata Kunci: ampas tahu; biodiesel; kedelai; minyak kedelai; transesterifikasi ABSTRACT Soybeans are the largest commodity after rice in Indonesia. Needs to reach 2.3 million tons per year. Of this amount 50% is consumed in the form of tempeh, 40% in the form of knowing, and 10% of soybean oil. From tofu production, tofu waste generated. In this study, fat on tofu extracted for soybean oil used as biodiesel feedstock. The results are then analyzed for compared to standard biodiesel feedstock. This study aimed to calculate the weight of fat extracted from the tofu waste to extraction time and the type of solvent and determines the composition of the oil tofu. The results showed that the extraction time and the type of solvent affects the amount of fat that can be extracted. Benzene is a solvent that can extract oil better than the solvents toluene and n-hexane. Benzene had five hours optimum to extract the fat in the tofu. From the analysis, it is known that the FFA content of soybean oil using benzene was 4.8%, smaller than toluene (5.4%) and n-heksane (5.8%). While these numbers obtained by saponification 184.22 mgKOH/gr for benzene, 193.55 mgKOH/gr for toluene and 184.22 mgKOH/gr for n-heksane. The content of phosphorus of 0.19 for benzene, 0.23 for toluene and 0.12% for n-heksane. This value is still in the major categories that must be passed before pretreatment process trough transesterification into biodiesel. Keywords: tofu waste; biodiesel; soybean; soybean oil; transesterification
ROTATING MEMBRANE EMULSIFICATION FOR PRODUCING UNIFORM EMULSION Aryanti, Nita
METANA Edisi Khusus Februari 2011
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (6056.774 KB) | DOI: 10.14710/metana.v0i0.1655

Abstract

Abstract   A versatile and high capacity membrane emulsification system which utilises a rotating membrane for the precision manufacture of uniform emulsions droplet was investigated. Single emulsions were produced with a very low viscosity of paraffin wax. Tween 20 and  carbomer, as dispersed phase, emulsifier and stabilizer, respectively. Emulsion droplets in the range of 138 µm  to 305 µm with coefficient of variation (CV) ranging from 9% to 29% were obtained. The methodology allows control of droplet production through adjustment of system operating parameters (membrane type, rotation speed, dispersed phase flux) to influence the average droplet size and droplet uniformity.   Keywords : Emulsion, membrane emulsification, rotating membrane, stainless steel membrane, uniform droplet.
EKSTRAKSI GLUKOMANAN DARI PORANG LOKAL (Amorphophallus oncophyllus dan Amorphophallus muerelli blume) Aryanti, Nita; Abidin, Kharis Yohan
METANA Vol 11, No 01 (2015): Juli 2015
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1416.188 KB) | DOI: 10.14710/metana.v11i01.13037

Abstract

Abstrak Porang (Amorphophallus oncophyllus dan Amorphophallus muerelli blume) merupakan salah satu jenis tanaman yang memiliki potensial baik secara teknologi maupun secara komersial dalam segi medis, industri serta pangan. Porang memiliki kandungan glukomannan yang tinggi, yaitu sebesar 45-65%. Penelitian ini difokuskan pada ekstraksi dua jenis umbi porang yaitu porang putih (Amorphophallus oncophyllus  ) dan porang kuning (Amorphophallus muerelli blume) dengan tujuan menentukan yield ekstraksi glukomannan dan mendapatkan karakteristik glukomannan meliputi kadar glukomannan, morfologi dengan SEM dan gugus fungsi dengan FTIR. Penelitian ini dilakukan melalui 4 tahap, yaitu (1) tahap pembentukan tepung porang, (2) tahap analisa tepung porang, (3) tahap ekstraksi glukomannan dari tepung porang, dan (4) analisa produk glukomannan. Variabel kendali dalam penelitian meliputi : suhu operasi 75%, kecepatan pengadukan 4000 rpm, dan waktu ekstraksi 15 menit. Variabel bebasnya berupa jenis tepung porang (porang putih dan porang putih), dan jenis pelarut (alumunium sulfat dan air, etanol). Produk kemudian di analisa dengan kadar KGM (konjac glukomannan), struktur molekul dengan FTIR (fourier transform infra red), dan morfologi dengan SEM (scanning electron microscope). Untuk tepung porang putih memiliki kadar air 13,477%, kadar abu 4,612%, kadar pati 47,554%, kadar amilosa 17,536%. Sedangkan untuk porang kuning memiliki kadar air 12,326%, kadar abu 3,901%, kadar pati 5,598%, kadar amilosa 16,948%. Untuk hasil ekstraksi dari tepung porang putih dengan pelarut air diperoleh kadar glukomannan 73,70% dan untuk pelarut etanol diperoleh kadar glukomannan sebesar 64,67%. Analisa morfologi tepung glukomannan porang putih dan kuning untuk pelarut air menghasilkan panjang gelombang yang lebih besar dibandingkan pelarut etanol pada panjang gelombang 3000-3700 cm-1. Hasil analisa struktur permukaan pada tepung glukomannan porang putih dan porang kuning dengan pelarut air memiliki bentuk permukaan oval yang persebarannya tidak seragam tanpa adanya struktur jarum, sedangkan dengan pelarut etanol memiliki struktur jarum yang merupakan struktur Ca-oksalat. Kata Kunci : glukomannan, Porang, ekstraksi  AbstractPorang is one of the plants having high glucomannan content, about 45-65% which is potentially applied both in medical or food industry. This study focused on the extraction of the two types of porang, white porang (Amorphophallus oncophyllus) and yellow Porang (Amorphophallus blume muerelli). The aim of this study is to determine the yield of glucomannan extraction and its characteristics including the levels of glucomannan, morphology and specific functional groups. This research comprosed (1) the formation of porang flour, (2) the analysis of porang flour, (3) the extraction of glucomannan from porang flour, and (4) analysis of glukomannan product. The control variables were temperature of 75oC, stirring speed of 4000 rpm, and the extraction time for 15 minutes. The product was analyzed by levels of KGM (konjac glucomannan), FTIR (fourier transform infra red) for specific fungtional groups, and particle morphology with SEM (Scanning Electron Microscope). White porang flour had moisture content of 13.477%, 4.612% ash content, 47.554% starch content, and 17.536% amylose content. While for the yellow porang, the moisture content of 12.326%, ash content of  3.901%,  5.598%  starch content,  and  16.948% amylose content were found. The extract from white porang flour with water solvent obtained glucomannan levels of 73.70% and for ethanol solvent obtained glaucoma-nnan levels of 64.67%. Analysis of morphology of the glucomannan flour from white and yellow porang with water solvent produce greater wavelength than the one extracted with ethanol solvent at 3000-3700 cm-1. Results of analysis on surface structures is the glucomannan flour from white and yellow porang with solvent water has a non-uniform oval surface shape without needle structure, whereas the glucomannan flour with ethanol solvent has a needle structure reprensenting a structure of Ca-oxalate.         Keyword: Glucomannan, Porang, Extraction
CO-COMBUSTION SLUDGE IPAL PLTU TANJUNG JATI B UNIT 1&2 DENGAN BATUBARA : TINJAUAN ENERGI TERMAL PEMBAKARAN DAN PENGARUH TERHADAP EMISI SOX DAN SLAGGING PADA BOILER SAC, Ragil Darmawan; Aryanti, Nita; Soetrisnanto, Danny
METANA Vol 9, No 01 (2013): Juli 2013
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (215.475 KB) | DOI: 10.14710/metana.v9i01.7207

Abstract

Abstract Electricity production process at TanjungJati B unit 1&2 Power Plant is also producing B3 waste (sludge) obtained from waste water treatment plant. E-Green principles can encourage company to reduce amount of waste generated. A co-combustion process (re-combusting the sludge with coal in boiler) can be applied to reduce the sludge waste. Previous study literature shows there is no experiment related co-combustion between sludge and coal. Moreover, characteristic of sludge (proximate, ultimate, chemical composition and temperature of ash fusion) effective for combustion and the process are unknown. The aims of this research are to find sludge characteristic, to evaluate caloric value from sludge combustion, to study the effect of co-combustion coal-sludge to emission and potential of slagging formation. The research carried out by proximate analysis (moisture, ash, volatile matter, sulfur and caloric content), ultimate analysis (C, H, S, N, and O), chemical composition of ash (SiO2, Al2O3, Fe2O3, CaO, MgO, K2O, Na2O, TiO2, and P­2O5), and ash fusion temperature. Results showedthat thecaloricvalue, sulfurandCaO content are differentsludgewithcoal. The caloric value of sludge is 428.22kcal/kg, sulfur content is 12.46% and CaO content is 34.11%. Caloric value of coal is 6125 kcal/kg, sulfur content is 1.14% and CaO content is 1.73%. The sulfur contentrepresentthe amount of produced SOxemissionsdue to there is no sulfur content at formed ash. The combustion with coal produced 427.318 mg/Nm3 SOx emission. The mixingratiothatstillmeets the standardis(15:1) with711.547mg/Nm3 of SOx emission. Mixing ratio variation show that higher ratio gives higher caloric value, lower sulfur content and decrease slagging index. Based on existing boiler requirement conditions, the mixing ratio of (20:1) and (15:1) is applicable due to have enough caloric value, low slagging index, and not exceed the limit for emission.The optimum condition for co-combustion in this research is ratio (15:1). Higher ratio is recommended for application of co-combustion due to result higher caloric value, lower emission and lower slagging index.  38Keywords :Co-combustion, Batubara, Sludge IPAL, Slagging
Analisis Pengaturan Temperatur, Konsentrasi, dan Waktu Pengadukan pada Tekanan Atmosferik untuk Meningkatkan Kepresisian Densitas Larutan Alginat Permanadewi, Indrasukma; Kumoro, Andri Cahyo; Wardhani, Dyah Hesti; Aryanti, Nita
TEKNIK In Press
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/teknik.v42i1.35994

Abstract

Alginat merupakan polimer polisakarida linier yang sangat mudah larut dalam air dengan densitas dan viskositas yang dapat diatur sesuai keperluan. Sifat khas ini membuat alginat banyak digunakan dalam industri pangan maupun non pangan. Seperti pada kebanyakan bahan alam lainnya, densitas larutan alginat pada umumnya juga dipengaruhi oleh temperatur, konsentrasi dan waktu pengadukan. Karenanya, penelitian ini bertujuan untuk meningkatkan kepresisian densitas larutan alginat dengan pengaturan temperatur (30, 45, 60 dan 75°C), konsentrasi alginat (1, 2, 3, 4 dan 5% massa) dan waktu pengadukan (15, 30, 45 dan 60 menit) menggunakan metode piknometri. Hasil penelitian menunjukkan bahwa semakin tinggi temperatur maka densitas akan semakin rendah, sebaliknya semakin tinggi konsentrasi dan waktu pengadukan maka densitas larutan alginat akan semakin meningkat. Dengan demikian, dapat disimpulkan apabila menginginkan densitas larutan alginat 0,9228 g/ml maka konsentrasi alginat yang digunakan 2% dengan suhu 30°C dan waktu pengadukan 30 menit.
KINERJA MEMBRAN ULTRAFILTRASI UNTUK PENGOLAHAN LIMBAH EMULSI MINYAK-AIR SINTETIS Nita Aryanti; Indah Prihatiningtyas; Diyono Ikhsan; Dyah Hesti Wardhani
Reaktor Volume 14, No. 4, OKTOBER 2013
Publisher : Dept. of Chemical Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (410.678 KB) | DOI: 10.14710/reaktor.14.4.277-283

Abstract

Kegiatan pengilangan minyak bumi untuk memenuhi kebutuhan bahan bakar menghasilkan limbah cair emulsi minyak-air. Pengolahan limbah emulsi minyak-air dengan metode konvensional belum mampu untuk menerapkan prinsip reuse dan recycle karena hasil pengolahan limbah hanya dibuang ke perairan. Selain itu, proses konvensional menimbulkan produk samping berupa sludge yang tidak diinginkan.Membran ultrafiltrasi telah banyak digunakan untuk pengolahan limbah berminyak. Pada penelitian ini digunakan umpan model limbah emulsi minyak dengan fasa terdispersi berupa minyak pelumas, bensin dan solar.Fasa kontinu adalah air, sedangkan surfaktan adalah sebagai mediator.Minyak pelumas, bensin dan solar digunakan untuk mewakili limbah kilang minyak bumi yang berasal dari kolom-kolom distilasi serta limbah yang berasal dari utility plant, misalnya limbah bahan bakar solar.Penggunaan model limbah pengilangan bertujuan untuk mendapatkan pemahaman yang lebih detail tentang kinerja membran ultrafiltrasi untuk pengolahan limbah emulsi minyak bumi. Pengujian kinerja membran ultrafiltrasi dilakukan dengan mengetahui profil fluks dan rejeksi. Karakterisasi membran menunjukkan bahwa membran polyethersulfone yang digunakan merupakan membran ultrafiltrasi asimetrik dengan permeabilitas 17,32 (l/m2.jam.bar). Profil fluks emulsi bensin, minyak pelumas dan solar menunjukkan bahwa penurunan fluks bensin yang tertinggi. Selain itu dapat dilihat bahwa membran polyethersulfone yang digunakan mampu merejeksi COD sebesar 98% dan minyak sebesar 98% untuk umpan emulsi bensin. Untuk emulsi minyak pelumas, 94% COD dan 99% minyak dapat direjeksi, sedangkan untuk umpan emulsi minyak solar, rejeksi COD sebesar 90% dan rejeksi minyak sebesar 98%.
Application of Square and Oblong Pore Shapes in Rotating Membrane Emulsification to Produce Novel Particulate Products Nita Aryanti; Richard Andrew Williams; Qinchung Yuan
Reaktor Volume 20 No.1 March 2020
Publisher : Dept. of Chemical Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (404.93 KB) | DOI: 10.14710/reaktor.20.1.47-56

Abstract

Rotating membrane emulsification (RMR) has been intensively developed and applied for producing emulsion as well as particulate products such as microcapsules. Polyurea microcapsules were generally prepared by interfacial polycondensation polymerisation with addition of modifier to produce more stable microcapsules. In this research, development of the RMR was applied for producing polymer particles stabilised by nanoparticle without any addition of surfactant or modifier. Two types of membrane pores, the square (Type-A) with hydraulic diameter (Dh) of 84 mm and oblong pores with an aspect ratio of 0.33 (Type-B) having Dh of 69 mm was investigated. For the membranes designed in this research, pore shape A membrane could produce good uniformity in both polyurea microcapsule and polymer particle. In the polymer stabilised particle, this membrane type obtained a narrower size distribution than the usage for o/w emulsification. Reasonable uniform particles at high membrane rotation speed could also be achieved with the use of Type-A membrane. The uniformity confirmed that there was only minor breakup of products during operation at high membrane rotation. This attractive feature was significant in the production of fragile or shear-sensitive particulate products since the delicate structure of these products is possibly easy to destroy at high membrane rotation speed.  Keywords: polyurea microcapsules; particles stabilised nanoparticles; slotted pore
PATI TALAS (Colocasia Esculenta (L.) Schott) SEBAGAI ALTERNATIF SUMBER PATI INDUSTRI Nita Aryanti; Yovita Asih Kusumastuti; Wida Rahmawati
JURNAL ILMIAH MOMENTUM Vol 13, No 1 (2017)
Publisher : Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36499/jim.v13i1.1759

Abstract

Kandungan pati dalam talas mencapai 13-29% dengan karakteristik yang baik. Penelitian ini difokuskan pada ekstraksi pati dari umbi talas, tepung talas dan modifikasi pati dengan hidrolisa asam. Tujuan penelitian ini adalah mengkaji pengaruh metode ekstraksi dan modifikasi pati talas terhadap karakteristik produk serta sifat amilograf pati talas. Tahapan penelitian yang dilakukan terdiri dari pembuatan pati dari umbi talas dan tepung talas, modifikasi pati talas, analisis hasil pati dan karakterisasi pati. Karakterisasi pati meliputi kadar air, kadar pati, kadar amilosa, kadar amilopektin dan karakterisasi fisik. Sedangkan karakterisasi fisik yang dilakukan adalah bentuk dan ukuran granula pati (berdasarkan hasil Scanning Electron Microscopy), serta sifat amilografi pati. Hasil penelitian menunjukkan bahwa yield pati yang diperoleh dari umbi talas lebih besar dari yield pati yang diperoleh dari tepung talas yaitu sebesar 46,67%. Karakterisasi pati talas menunjukan bahwa kadar air pati modifikasi menunjukkan nilai yang paling rendah yaitu 5.3%. Pati dari umbi talas memiliki kadar pati dan amilopektin paling tinggi dibandingkan dengan pati hasil penelitian lainnya dengan nilai kadar pati 80% dan kadar amilopektin 74,45%. Sedangkan kadar amilosa pati hasil penelitian lebih rendah dibandingkan dengan kadar amilosa pati komersial lainnya. Temperatur gelatinisasi paling tinggi terjadi pada pati dari umbi talas yaitu, 70oC. Hasil SEM pada pati talas menunjukan bahwa bentuk pati talas cenderung bulat dengan ukuran granula mendekati pati jagung dan pati beras. Kata kunci: pati, talas, modifikasi, asam
POTENSI MEMBRAN MIKROFILTRASI DAN ULTRAFILTRASI UNTUK PENGOLAHAN LIMBAH CAIR BERMINYAK Maria Widyasmara; Cindika Kusuma Dewi; Nita Aryanti
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 (1176.996 KB)

Abstract

Oily wastewater in the form of stable oil in water emulsion is found as one source of industrialwastewater in Indonesia. Conventional wastewater treatment has several limitations and is not able to achieverequirement for effluent standard. Nowadays, membrane microfiltration and ultrafiltration have been used forwater purification as well as wastewater treatment. Studies on the application of microfiltration andultrafiltration for wastewater have been conducted. However, the studies used real wastewater consistingcomplex compound. In this research a model of oily wastewater was used. The model of oily wastewatercomprised an oil in water emulsion stabilized with a surfactant. By using this model, it is expected that analysisof membrane performance based on permeate flux and rejection can be conducted more comprehensively. Thisresearch used microfiltration and ultrafiltration membrane and the oily wastewater model was made by mixingTween 80 with concentration of 2% with several types oil (vegetable oil, diesel oil dan cutting oil). The researchis carried out in order to obtain wastewater and membrane characteristic as well as the influence of TMP, oilytypes and oil concentration on membrane performance based on permeate flux, COD and surfactantrejection.Based on this research characteristics of oily wastewater could be obtained. In general, increase ofTMP resulted on higher permeate flux. By varying the oily type, it was found that the vegetable oil has thehighest permeate flux, the effect of oil concentration on permeate flux in addition was depend on TMP. When theTMP was 1 bar, the increase of oil concentration produced lower flux. However at TMP of 2 bar, the permeateflux is independent on oil concentration. Experimental works using ultrafiltration resulted on 94,89 – 98,83%rejection of COD and 69 – 86% rejection of surfactant. Based on this research it is concluded that theultrafiltration is capable to treat oily wastewater in the form of stable oil in water emulsion.
PEMISAHAN KONJAK GLUKOMANAN MENGGUNAKAN MEMBRAN ULTRAFILTRASI Yusiana Dewi Afriyani; Anisah Nirmala; Nita Aryanti
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 (185.677 KB)

Abstract

Glucomannan is a polysaccharide from hemicelulose variety that consist of the chain bunch of galactose, glucose and mannose. Glucomannan can be produced from porang (Amorphallus konjac) with isolation method using enzyme amylase where carbohydrate structure from the material will be broken to be monomers glucose such as galactose, glucose and mannose. One of the efford for increasing yhe quality and pureness of glucomannan can be used separation method using ultrafiltration membrane. To know the potential of ultrafiltration membrane for purification glucomannan will be done research for separation of glucomannan solution using ultrafiltration membrane. The membrane used in this experiment is Poly ether sulfon with pores 20 kda. This research used feed concentration of 0.5 gr/L and 1.5 gr/L, with operation pressure 1 bar, 2 bar and 3 bar. The characteristic of KGM showed that the KGM having particle size of 81.2 to 186 μm. The membrane permeability is 11.87 L/m2 h bar with porous assimetric type. Flux profile show that the increase of pressure will decrease the membrane flux. In addition, the membrane rejection is higher for pressure 3 bar than 1 bar and 2 bar. However at pressure of 2 and 3 bar membrane rejection decrease with the increase of concentration due to lower permeate mass transfer. Moreover, low permeate flux is caused by fouling and polarization of concentration. We suggest for the next research about fouling affect and polarization of membrane ultrafiltration.
Co-Authors Adina, Alifia Rizki Adristy, Vania Zulfa Aininu Nafiunisa Aininu Nafiunisa Aji Prasetyaningrum Amelia Maharani Amelia Maharani Andri Cahyo Kumoro Anisah Nirmala Cindika Kusuma Dewi Daliman, Daliman Danny Soetrisnanto Dessy Kurniawati Dessy Kurniawati Didi Dwi Anggoro Diyono Ikhsan Dyah Hesti Wardhani Fathia Mutiara Willis Fatoni Nugroho Febrian Murvianto Fella Ryanitha A. Hargono Hargono Henny Ikka Safitri Heri Cahyono I Nyoman Widiasa Indah Prihatiningtyas Ken Dimas Yogananda Khairil Anwar Kharis Yohan Abidin, Kharis Yohan Khoiriyah, Lu'luatul Kristinah Haryani Luqman Buchori Maria Widyasmara Nafiunisa, Aininu Noer Abyor Handayani Permanadewi, Indrasukma Qinchung Yuan Ragil Darmawan SAC RATNAWATI Richard Andrew Williams Setia Budi Sasongko Wida Rahmawati Wida Rahmawati Yovita Asih Kusumastuti Yovita Asih Kusumastuti Yuliani, Sari Yusiana Dewi Afriyani Zakki, Abdurrahman