Articles

MODEL PERPINDAHAN MASSA SISTEM CAIR-CAIR DALAM TANGKI BERPENGADUK DENGAN PENDEKATAN TEORI LAPISAN FILM

GEMA TEKNOLOGI Vol 15, No 1 (2006): Periode April - Oktober 2006
Publisher : GEMA TEKNOLOGI

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Abstract

Zainal Abidin, Wahyuningsih, Mohamad Endy Yulianto, in paper model of mass transfer system of liquid in churn tank with coat film theory approach explain that Mass transfer in the liquid-liquid phase is an important phenomena in the extraction process. Mass transfer coefficient is one of the factors that influence the rate of mass transfer. Nowadays, in the extraction process of free fatty acid from palm oil with methanol, there’s no data of mass transfer coefficient. The goal of this research was todetermine and develop correlation of mass transfer coefficient on the extraction process of palm oil’s free fatty acid with methanol, as the solvent. Therefore, the research was held in two major steps. The first step was held a liquid-liquid extraction in the laboratory, and the second step was develop an empirical correlation for mass transfer coefficient in the term of dimensionless groups. Batch extraction was conducted in an agitated vessel. The variables that is studied in the process include temperature process, solvent to feed weight ratio, and impeller speed. Based on the data that was obtained from the experiment, the correlation equation that can be used to calculate the mass transfer coefficient was expressed by Sherwood number and could be correlated turbine Reynolds number, Schmidt number, (dp/dT) and (L/S). The result by of Sh = 6,648x10-4 Re0,194 Sc0,333 (dp/dT)0,140 (L/S)0,183The averege deviation of the equation is 9,67 % if it is intended to account for mass transfer coefficient. These dimensionless groups are developed in the range of 3169 to 11750, 6321 to 9897, 0,0007 to 0,0013, and 0,333 to 1 in the Reynolds number, Schmidt number, (dp/dT), and (L/S), respectively.Key words : extraction, mass transfer

MODEL DIAGRAM JANECKE KESETIMBANGAN FASA PADAT-CAIR PROSES TIPE SOLVAY UNTUK PEMBUATAN Na2CO3 DAN KCI DARI ABU SABUT KELAPA

METANA Volume 5 Nomor 2 Desember 2007
Publisher : METANA

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Abstract Sodium carbonate and Kalium Chlorde are two major Chemical compound in industry such is glass, pulp, soap and paper industry. Sodium carbonate and kalium chloride can be produces simultaneously from coconut shell  fiber as by solvay type process. The ash coconut shell fiber contain larger portion of Kalium carbonate (35-45%-b Dikaliumoxide). The Material used in the research were kalium carbonate , kalium bicarbonate sadium chloride, carbon dioxide , kalium chloride, sodium carbonate ,sodium bicarbonate and water. The research parameter were the solubility of the salts kalium carbonate sodium chloride, sodium carbonate ,kalium chloride, sodium bicarbonate and kalium bicarbonate. For the solid liquid phase equilibrium data the observation for K+-Nα+- CI- CO3 - -H2O system was conducted. 30-40C and for K+-Nα+- CI- HCO3 - -H2O system the observasion was conducted at 55-65C They also help to identify the separation boundaries , the condition of operation ,the lise of solids that are  most likely to precipitate and many more. Information, the generated SLE-phase ,diagrams such as phase boundary data and saturation point data may be used to solve grapichally the mass balance equations is related to the operational pathson the phase diagrams,  the temperature dependent phase boundaries and the solubility index it is possible to simultaneously design.analize and simulate both continous flow sheets wich crystallization operation and sequences of batch.operations. The Simultaneous graphical not only provides a visualization of the process operation, but also,provides very goods initial estimates for future simulations with rigorous model.Jancke diagram .from Na + K t – CI- HCO3 - -H2O system at 50 C has the crystallization field.while the widest crystallization field for the Na + K t – CI- HCO3 - -H2O system was obtained from process at 400C Keyword : Janecke diagram; proses solvey

ASIDOLISIS ENZIMATIS MINYAK SAWIT MERAH DAN MIINYAK IKAN TUNA DENGAN BIOKATALIS LIPASE PADI MENGHASILKAN ASAM LEMAK KAYA OMEGA -3

METANA Edisi Khusus Februari 2011
Publisher : METANA

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Abstract   Red palm oil is source of p carotene and vitamin E, while Tuna fish is source of omega-3 and 6. Diversification of palm oil and tuna fish oil can be used as food supplement. The utilization of high concentration of minor vitamin is one of strategy to increase the additional value of both oil and also to provide minor vitamin from local product in order to increase the healthy of the society. There was some research conducted on micro encapsulation process of red palm oil which is rich of P carotene, provitamin A, and provitamin E. And there was also research subjected to microencapsulated fish oil which is rich of omega-3. In this research we combined the microencapsutaion of both red palm oil and tuna fish oil through enzymatic cytolysis process. From the cytolysis process, we will got type of fatty acid which is rich of omega 3 and P carotene . The objective of the research were to study the activity of rice bran lipase as biocatalisator in the conversion of palm oil fatty acid into fatty acid which is rich of omega-3, and to develop the bioreactor for the enzymatic cytolysis for fatty acid production. The research result showed that optimum condition for the cytolysis process was the ratio of red palm oil tuna fish oil 3:1, temperature 40oC; reaction time 4 hours, where the yield of fatty acid has EPA and DHA concentration 35,92% and 5,65%, respectively. While the rate of the reaction was 619,67 mol/hour. Red palm oil is an alternative source of fatty acid which is rich of omega 3 (EPA and DHA), and it can be produced by enzymatic cytolysis by using rice bran lipase. Lipase enzyme of R Meithei found to be a good biocatalyst in the red palm oil and tuna fish incorporation process of the fatty acid which is rich of omega-3.   Key words: citolysis, red palm oil, tuna fish oil

PENGAWETAN IKAN BANDENG (CHANOS-CHANOS FORSK) TINGGI LISIN DENGAN PENGASAPAN CAIR DAN PENAMBAHAN SENYAWA ANTI MIKROBIA DAN ANTIOKSIDAN DARI DAUN SIRIH TINGGI OLEORESIN (piper bitttle Linn) DALAM BENTUK KAPSUL

METANA Volume 6 No. 01 April 2009
Publisher : METANA

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Abstracl   On this reaseach have observed liquid smokes ability to pursue microbe activity, antimicrobe and antioxidant compounds in betel oleoresin, give preservation by purse microorganisms growth on chanos-chanos forsk. Fis submerge process by liquid smoke with bettle oleoresin submerge on presmoking, give optimum result in preserve time eight weeks lysine value 26,56 mg/100 g, with TVB value 7,66 mgN/100 g and microorhanism 9,5 x 12 CFU/g. Reach on submerge with liquid smoke 4 %  concentration,  during 15 minutes, and submerge with liquid smoke 4% concentration during I0 minutes. Result above have contribution with sensoric examine of rather hard to hard texture and very like flavor   Keywords : Liquid Smoke - oleoresin sirih- Bandeng Fish

ASIDOLISIS ENZIMATIK MINYAK IKAN TUNA( THUNNUS THYNNUS) MENJADI PRODUK ASAM LEMAK KAYA OMEGA-3 DENGAN PEMANFAATAN LIPASE GETAH PEPAYA (carica papaya latex)

METANA Vol 7, No 01 (2011): Volume 7, No. 01 Juli 2011
Publisher : METANA

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ABSTRACT Incorporation of omega-3 polyunsaturated acids (n-3 PUFA) into Tuna (Thunnus thynnus) fish oil was investigated by using acidolysis enzimatis Process. The product of this modification is expected to be used as an ingredient nutrifition food products, especially in milk and baby food as well as pregnant and lactating The purpose of this study was to optimizing the used of lipased papaya latex (Carica papaya latex) in the product to incorporation fatty acids rich in omega-3.Bioreactor acidolysis enzematik development and Optimization of process the productivity of fatty acids rich in omega-3. Reaction Acidolysis was conducted between tuna (thunnus thynnus) fish oil by microbial lipase (5% of the weight of the substrate mixture) or vegetable lipased (Carica papaya latex) (6-10% by weight subtract mixture) as biocatalist.Acidolysis mixture the bioreactor at 40 o C for (2-6 hours) and the stirring speed of 200 rpm, pH (4.5 to 6.5). to eliminate free fatty acids from the product acidolysis performed neutralization with NaOH The results are expected to show that the lipase papaya latex (Carica papaya latex) can be used as biocatalyst incorporated omega-3 fatty acids in   tunaIthunnus thunnyl) fish oil . In this study sought conditions for optimum incorporation rate, ie the use of papaya latex lipase concentration of 8%, the ratio of concentrations of omega-3 fatty acid and palm oil (1:1), pH = 5.5, Optimal time of 4 hours and the temperature (40oC) . The results were analyzed incorporation of omega-3 (EPA and DHA) with GC.EPA generated: 3.57% and DHA = 3.91% Key word:Acidolysis,Tuna fish oil

Eksperimen pembuatan dodol lidah buaya dengan penambahan tepung ketan

Jurnal Kompetensi Teknik Vol 9, No 2 (2017)
Publisher : Fakultas Teknik, Universitas Negeri Semarang

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Penelitian ini bertujuan untuk mengetahui perbedaan kualitas inderawi dodol lidah buaya dengan penambahan tepung ketan 20%, 30%, 40% ditinjau dari aspek tekstur, warna, rasa dan aroma. Selain itu juga untuk mengetahui kandungan kalium dan serat kasar dodol lidah buaya hasil eksperimen serta mengetahui tingkat kesukaan masyarakat. Data dianalisis dengan analisis varian klasifikasi tunggal untuk mengetahui perbedaan kualitas inderawi dodol lidah buaya dengan penambahan tepung ketan, kandungan kalium dan serat kasar digunakan metode AOAC, sedangkan deskriptif persentase untuk mengetahui tingkat kesukaan masyarakat. Hasil analisis perbedaan kualitas inderawi dodol lidah buaya hasil eksperimen menunjukkan ada perbedaan pada indikator tekstur, warna dan aroma, namun pada indikator rasa tidak menunjukan adanya perbedaan.. Hasil analisis uji kandungan gizi menunjukkan rata-rata kandungan kalium dan serat kasar , penambahan tepung ketan 20%, 30%, dan 40% yaitu 0,025% dan 0,45%, 0,08% dan 0,87% serta 0,16% dan 1,28%. Hasil analisis tingkat kesukaan masyarakat menunjukkan tiga sampel dodol lidah buaya hasil eksperimen disukai masyarakat.

EKSTRAKSI ASAM LEMAK BEBAS DARI MINYAK NABATI DENGAN METANOL KAJIAN PERPINDAHAN MASSA

GEMA TEKNOLOGI Vol 16, No 4 (2012): Periode Oktober 2011 - April 2012
Publisher : GEMA TEKNOLOGI

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Wahyuningsih, Moh Endy Yulianto, in this paper explain that extraction of free fatty acids from vegetable oils with methanol performed in batch stirred tank, in a variety of conditions. Variables experiments in liquid-liquid extraction including temperature, solvent ratio and rotational speed stirrer. This study aims to develop a correlation coefficient of mass transfer in extraction of free fatty acids from vegetable oils methanol. Rresearch was conducted in two phases. Was the first stage liquid-liquid extraction experiments in laboratory. Second step is the development of an empirical correlation for the mass transfer coefficients in the form of numbers not berdemensi results showed that the greater the temperature, turn the mixer speed and solvent-feed ratio of the mass transfer koffisien gained greater. Mass transfer coefficient expressed in Sherwood number and correlated against the Reynolds number, Schmitd, (dP / dT) and (L / S), the results obtained: Sh = 4,669 x 10-5 Re 0,462 Sc0,5 (dP/dT)0,308 (L/S)0,187 If used to calculate the mass transfer coefficients, have an average error of 8.79% for the regression line. This equation was developed in the Re number range 3169 to 11 750; numbers Sc 6321 to 9896, (dp / dT) from 0.0007 to 0.0013 and (L / S) of 0.333 to 1. Keywords: nabati oil extraction

ASIDOLISIS ENZIMATIK MINYAK IKAN TUNA( THUNNUS THYNNUS) MENJADI PRODUK ASAM LEMAK KAYA OMEGA-3 DENGAN PEMANFAATAN LIPASE GETAH PEPAYA (carica papaya latex)

METANA Vol 8, No 01 (2012): Juli
Publisher : METANA

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Incorporation of omega-3 polyunsaturated acids (n-3 PUFA) into Tuna (Thunnus thynnus) fish oil was investigated by using acidolysis enzimatis Process. The product of this modification is expected to be used as an ingredient nutrifition food products, especially in milk and baby food as well as pregnant and lactating The purpose of this study was to optimizing the used of lipased papaya latex (Carica papaya latex) in the product to incorporation fatty acids rich in omega-3.Bioreactor acidolysis enzematik development and Optimization of process the productivity of fatty acids rich in omega-3. Reaction Acidolysis was conducted between tuna (thunnus thynnus) fish oil by microbial lipase (5% of the weight of the substrate mixture) or vegetable lipased (Carica papaya latex) (6-10% by weight subtract mixture) as biocatalist.Acidolysis mixture the bioreactor at 40 o C for (2-6 hours) and the stirring speed of 200 rpm, pH (4.5 to 6.5). to eliminate free fatty acids from the product acidolysis performed neutralization with NaOH The results are expected to show that the lipase papaya latex (Carica papaya latex) can be used as biocatalyst incorporated omega-3 fatty acids in   tunaIthunnus thunnyl) fish oil . In this study sought conditions for optimum incorporation rate, ie the use of papaya latex lipase concentration of 8%, the ratio of concentrations of omega-3 fatty acid and palm oil (1:1), pH = 5.5, Optimal time of 4 hours and the temperature (40oC) . The results were analyzed incorporation of omega-3 (EPA and DHA) with GC.EPA generated: 3.57% and DHA = 3.91% Key word:Acidolysis,Tuna fish oil

KONDISI KEMANTAPAN JALAN BERDASARKAN BEBAN LALU LINTAS DAN KETERSEDIAAN DANA PENANGANAN

Jurnal Teknik Sipil Vol 1, No 1 (2013): Jurnal Teknik Sipil
Publisher : Jurnal Teknik Sipil

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Satuan Kerja Non Vertikal Tertentu (SNVT) Wilayah II Provinsi Jawa Tengah adalah instansi yang menangani jalan strategisnasional Provinsi Jawa Tengah yang mempunyai daya saing tinggi dalam keselamatan dan keamanan. Penelitian ini bertujuanuntuk mengetahui kondisi jalan, besar beban yang terjadi pada jalan, hubungan antara pertumbuhan lalu lintas dengankondisi jalan serta kebijakan Bina Marga dalam mengatur ketersediaan dana untuk pencapaian kondisi jalan mantap.Jenis penelitian ini diskriptif yaitu dengan melakukan perbandingan data kondisi permukaan jalan menggunakan NAASRARoughness-meter untuk menganalisa peningkatan/penurunan kondisi jalan antara Tahun 2008–2013. Beban lalu lintas jalandihitung dari data lalu lintas harian rata-rata (LHR). Regulasi kebijakan Bina Marga untuk penentuan prioritas penangananjalan berdasarkan ketersediaan dana, kertas kerja RKA-KL dan rincian pekerjaan Tahun 2008-2013..Kondisi jalan mantap meningkat dari Tahun 2008 sebesar 78,23% menjadi 97,0% pada Tahun 2013 dengan kecenderunganyaitu y= 139,87*0,01^(1/x). IRI menurun dari Tahun 2008 sebesar 5,66 menjadi 3,91 pada Tahun 2013 dengankecenderungan yaitu y= 1,847*e^(9,136/x). Beban jalan yang terjadi berdasarkan kondisi riil di lapangan Tahun 2008mencapai 484.631 standard axel meningkat pada Tahun 2013 menjadi 661.575 standard axel dengan kecenderungan yaitu y=274,82e^(0,069x). Pertumbuhan lalu lintas meningkat rata-rata 1,07% per tahun. Ketersediaan dana meningkat dari Tahun2008 sebesar Rp 185.059.648.000,00 menjadi Rp 471.865.926.000,00 pada Tahun 2013. Kecenderungan kemantapan jalanterhadap penyerapan dana yaitu y= 69,96*1,0^x.Kata kunci: roughness, jalan, pemeliharaan, kebijakan.

Tinjauan Atas Penetapan Pajak Bumi dan Bangunan pada Kantor Pelayanan PBB Bogor

Jurnal Ilmiah Kesatuan (JIK) Vol 9, No 1 (2007): Jurnal Ilmiah Kesatuan
Publisher : STIE Kesatuan

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Tujuan Penelitian adalah mengetahui cara perhitungan dan penetapan PBB di Kantor Pelayanan PBB Bogor serta kendala apa saja yang dihadapi dalam penetapan Pajak Bumi dan Bangunan. Dalam menetapkan Pajak Bumi dan Banguna di dasarkan pada Surat Pemberitahuan Objek Pajak Pajak Bumi dan Bangunan (SPOP PBB) yang di isi oleh wajib pajak. Rumus untuk menghitung Pajak Bumi dan Bangunan yang terutang adalah 0,5% x ( NJKP ) x ( NJOP – NJOPTKP) Nilai Jual Objek Pajak Tidak Kena Pajak ditetapkan dengan mempertimbangkan perkembangan ekonomi dan moneter serta perkembangan umum objek pajak setiap tahunnya. Untuk wilayah Bogor NJOPTKP tahun 2004 adalah sebesar Rp 5.000.000,00 Keywords: Penetapan Pajak Bumi dan Bangunan (PBB).

Co-Authors Ade S, Egi Adlhani, Erfanur AMALIAH, DITA Ary Setyawan Astati, Astati Basuki, Rokhmat Broto, R.T.D. Wisnu Desyani, Eka Dg. Parani, Syamsul Bahri Djunaidi, Bambang Dua Getan, Maria Amaranta Edy Supriyo ELLY PROKLAMASININGSIH Endri Astuti Endriyani, Lia Ernawati, Tri Fahmi Arifan Fahreza, Ersa Fitriani, Fania Ghita, Azhariyanti Mei Haryani, Diah Suci Haryani, Kayat Heny Kusumayanti Imam Wahyudi Indrawan, Imam Wahyudi Isnawati, Noor Isti Pudjihastuti Jamaluddin Jamaluddin Johnny Tanamal Karnan Karnan, Karnan KORNELIUS, YOBERTH Mahfoedz, Ircham Margaretha T S Margaretha Tuti Susanti mariyati mariyati Miskijan, Miskijan Moh Endy Yulianto Moh Endy Yulianto Mohamad Endy Yulianto Muhammad Nuruzzaman Mulfiroh, Susi Murni Dwiati Muslimin Muslimin Mustika, Ayu Mutakim, Mulyana Zainal Narullita, Veny NDARI, TRIA WULAN Nisviati, Imama NUR ATIFA, FIRDHA Nursiwi Nugraheni, Nursiwi Octavianti Paramita P. Nainggolan, Engky Paly, Muh Basir Paratmanitya, Yhona Ponirin Ponirin, Ponirin Pramesti, Setyoning Widya Prihatiningsih Prihatiningsih, Prihatiningsih PUDJI ASTUTI Purwanti, Ita R TD Wisnu Broto, R TD Wisnu Rani, Dina Elvia Ria Novianti Rizka Amalia Santi, Ira Nuriya Sari, Elok Fariha Sariyati, Susiana Sa`adah, Nikmatus Sembiring, Maranatha Setyaningsih, Nina Setyaningtyas, Nimas Arum Siregar, Vynda Dindasari Sri Astuti Sri Lestari Sufriyatna, Edwin Syamsul Bachri Tanti Diyah Rahmawati, Tanti Diyah Tika Widiastuti, Tika Tria Wulandari, Tria Wulandari Trimurtini, Trimurtini Trimurtini Ulfa, Zakiyah Vita Paramita Yekti Wirawanni Yoberth, Yoberth Yusran Yusran Zainal Abidin Zulkifli N Zulkifli N, Zulkifli N