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Zainal Arifin
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Department Of Chemical Engineering, Politeknik Negeri Samarinda Jl. Dr. Ciptomangunkusumo Kampus Gunung Panjang Samarinda 75131
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Kota samarinda,
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JIMSI
Published by Politeknik Negeri Samarinda
ISSN : 27759083     EISSN : 27759075     DOI : http://dx.doi.org/10.46964/jimsi
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Energy Engineering Materials Science & Nanotechnology
This Journal publishes current original research on Chemical Engineering and Chemistry, especially on catalysts, biofuel, petro and oleo, and enviroment.
Arjuna Subject : Teknik Kimia (semua kategori) - Kimia Proses dan Teknologi
Articles 20 Documents
 1   2 
ANALISIS KINERJA HEAT EXCHANGER PADA PREHEATER CDU V DI KILANG RU V BALIKPAPAN Ibnu Eka Rahayu; Siti Nur Izzah; Muhammad Rahadian Hidayat
JURNAL TEKNIK KIMIA VOKASIONAL (JIMSI) Vol 1, No 1 (2021): JURNAL TEKNIK KIMIA VOKASIONAL (JIMSI)
Publisher : Politeknik Negeri Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (994.926 KB) | DOI: 10.46964/jimsi.v1i1.614

Abstract

Separation of crude oil in a petroleum processing plant requires a tool for heat exchanger. Heat Exchanger is used to transfer heat between two or more fluids that have a temperature difference, ranging from a high-temperature fluid to a low-temperature fluid. This process at PT. PERTAMINA RU V Balikpapan is located in the Crude Distillation Unit V (CDU V). The part of the heat exchanger that serves as preheating of petroleum is E-201-01A / B to E-201-11 or commonly referred as a pre-heater circuit. The important role of the pre-heater in the Crude Distillation Unit (CDU V) is significant in order to evaluate the performance of the heat exchanger so that it can be used as a basis for carrying out the cleaning process if it is found when its performance has decreased. Performance evaluation is conducted by comparing the Dirt Factor / Fouling factor (Rd) of the design data and the actual data obtained. The results obtained were heat exchanger E-201-04A / B, E-201-05A / B, E-201-06, E-201-08A / B, E-201-09, E-201-10A / B, and the E-201-11 had the actual Rd value higher than the design Rd, which indicated that there had been a decrease in performance on the heat exchanger. Heat exchanger E-201-04A / B, E-201-05A / B, E-201-06, E-201-08A / B, E-201-09, E-201-10A / B, E-201- 11 had the actual Rd value lower than the design Rd which indicated that the heat exchanger was still performing well. Heat exchangers that have a higher Actual Rd value than RD design are recommended to carry out immediate cleaning according to the conditions of the tool.
Penurunan Kadar Zat Warna Dalam Sampel Limbah Cair Industri Sarung Tenun Samarinda Menggunakan Adsorben CaO Dari Cangkang Kerang Darah (Anadara granosa) Kusyanto Kusyanto; Siti Sahraeni; Yusak Yusak
JURNAL TEKNIK KIMIA VOKASIONAL (JIMSI) Vol 2, No 1 (2022): JURNAL TEKNIK KIMIA VOKASIONAL (JIMSI)
Publisher : Politeknik Negeri Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (843.179 KB) | DOI: 10.46964/jimsi.v2i1.1473

Abstract

Industri sarung tenun Samarinda menghasilkan limbah cair dari sisa pewarnaan benang, dengan konsentrasi warna limbah cair sebesar 2168 Pt.Co. Konsentrasi ini berpotensi mencemari lingkungan, sehingga perlu dilakukan dekolorisasi agar konsentrasi warna limbah cair industri sarung tenun Samarinda dapat memenuhi standar baku mutu warna limbah yaitu sebesar 50 Pt.Co. Dekolorisasi limbah cair industri sarung tenun Samarinda menggunakan adsorben cangkang kerang darah teraktivasi. Penelitian ini dilakukan untuk mengetahui pengaruh massa adsorben dan kecepatan pengadukan dalam menurunkan konsentrasi warna limbah cair industri sarung tenun Samarinda. Variabel berubah yang digunakan dalam penelitian ini adalah massa adsorben (0.1, 0.2, 0.3, 0.4, 0.5 g) dan kecepatan pengadukan (120, 150, 200 rpm). Sampel limbah cair sarung tenun Samarinda dimasukan ke dalam Erlenmeyer sebanyak 50 mL lalu menambahkan adsorben cangkang kerang darah teraktivasi berukuran 200 mesh, kemudian mengaduk dengan shaker selama 30 menit. Sampel limbah kemudian disaring dengan kertas saring Whattman-42 lalu menganalisa konsentrasi akhir warna sampel setelah proses adsorpsi dengan metode analisa SNI 06-6989.24-2005. Hasil penelitian menunjukan bahwa kondisi optimum adsorpsi warna limbah cair industri sarung tenun Samarinda adalah pada massa adsorben 0,5 g, dan kecepatan pengadukan 150 rpm, dengan konsentrasi warna akhir sebesar 33,14 Pt.Co atau %removal sebesar 98,47%. 
MODIFIKASI SISTEM NITROGEN PADA SAAT START-UP PABRIK AMMONIA 1A MENGGUNAKAN COMPRESSOR NATURAL GAS BOOSTER Farah Fitri Annisa; Mentari Adinda Fithia; Zainal Arifin; Dedy Irawan; Majus Luther Sirait
JURNAL TEKNIK KIMIA VOKASIONAL (JIMSI) Vol 1, No 2 (2021): JURNAL TEKNIK KIMIA VOKASIONAL (JIMSI)
Publisher : Politeknik Negeri Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46964/jimsi.v1i2.871

Abstract

Start up is the first step in the operation of the factory. The start-up process at the Ammonia Plant Operations department 1A requires some preparation, namely draining the entire system with nitrogen and the required system line-up. Nitrogen circulation is used for heating up several units, such as reformers and bycatch. Heating up is done so that the temperature of the reformer and bycatch units can be quickly achieved and the process can take place immediately. The description of the heating up process when improvised nitrogen circulation is carried out using a natural gas booster compressor, this process simultaneously goes through the desulfurized unit for heating up. So there is no need to use natural gas for heating up the desulfurization unit and then throwing it away. The responses carried out are data analysis, data collection and data processing. Based on the results of the economic analysis, it can be seen that at start-up by carrying out improvement conditions it will be more efficient because natural gas that is usually wasted is no longer wasted and gains additional profits from the gas, production will be 3 hours faster so that profits increase, and save the amount of process gas and fuel used for the start-up process for 3 hours. And the time needed to return the capital issued is four times the start up.
PENGARUH KONSENTRASI EKSTRAK KULIT JENGKOL (Pithecellobium jiringa) SEBAGAI INHIBITOR KOROSI PADA LOGAM BAJA SS400 DALAM MEDIA ARTIFICIAL BRINE WATER Fataa Kusumattaqiin; Jovanda Fritz Florensia Imanuel
JURNAL TEKNIK KIMIA VOKASIONAL (JIMSI) Vol 2, No 1 (2022): JURNAL TEKNIK KIMIA VOKASIONAL (JIMSI)
Publisher : Politeknik Negeri Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (627.447 KB) | DOI: 10.46964/jimsi.v2i1.1439

Abstract

Kulit jengkol merupakan salah satu limbah industri rumahan yang memiliki nilai ekonomis yang rendah serta pemanfaatannya yang masih jarang ditemukan. Kulit jengkol yang tidak dimanfaatkan ini memiliki peluang menjadi inhibitor alami untuk mencegah laju korosi pada baja, karena dalam kulit jengkol mengandung zat tanin yang dapat menghambat proses pengkorosian pada baja. Penelitian ini bertujuan untuk mengetahui konsentrasi ekstrak kulit jengkol terbaik dalam menghambat proses korosi pada baja SS400 serta untuk mengatasi limbah dari produk olahan jengkol agar memiliki nilai tambah. Pembuatan ekstrak kulit jengkol dilakukan dengan pembersihan dan pencucian kulit jengkol, penjemuran, penghalusan. Kulit jengkol yang telah halus direndam dengan larutan etanol dengan perbandingan 1:8 dan disimpan selama 2 hari, kemudian diekstark dengan menggunakan alat rotary vacuum evaporator hingga menghasilkan ekstrak yang berbentuk pasta. Dilanjutkan dengan merendam plat baja SS400 dalam media artificial brine water dengan penambahan CO2 tablet effervescent dan kulit jengkol, dengan konsentrasi ekstrak pekat kulit jengkol 0,5%, 1%, 1,5%, 2%, 2,5%, 3% selama 14 hari. Hasil penelitian menunjukkan bahwa konsentrasi terbaik ekstrak kulit jengkol terbaik adalah pada konsentrasi 2,5% dengan corrosion rate sebesar 0,2318 mpy dan persen inhibisi sebesar 84%. Corrosion rate tertinggi sebesar 1,9743 mpy pada medium artificial brine water konsentrasi ekstark 2%.
PENURUNAN KADAR LOGAM BESI MENGGUNAKAN BUBUK KALSIUM CANGKANG KERANG HIJAU Noorma Kurnyawaty; Fitriyana Fitriyana; Muhammad Taufik; Ayu Erika Putri
JURNAL TEKNIK KIMIA VOKASIONAL (JIMSI) Vol 1, No 1 (2021): JURNAL TEKNIK KIMIA VOKASIONAL (JIMSI)
Publisher : Politeknik Negeri Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (902.001 KB) | DOI: 10.46964/jimsi.v1i1.656

Abstract

Green mussels (Perna viridis) are a type of processed water from a fairly high percentage of production. The high consumption rate is followed by the high amount of residual processing waste produced, namely in the form of shells. Unfortunately, mussel shell is a waste that is not used optimally. In the shells, there are a lot of mineral content, which when processed many benefits will be obtained. Clamshells have been studied to contain a fairly high source of the mineral calcium. This study is preliminary research focused on determining the ability of green mussel shell calcium powder to reduce iron levels in standard solutions with concentrations of 20, 40, 60, 80, and 100 mg / L. The results obtained from this study are the calcium content of green clamshells in the form of calcium carbonate (CaCO3) with calcium reaching 34.93% Wt and can be used properly to reduce iron metal levels.
KAPASITAS ADSORPSI LOGAM MANGAN (Mn) MENGGUNAKAN BIOSORBEN PEKTIN DARI KULIT PISANG KEPOK Mardhiyah Nadir; Sitti Sahraeni; Rifka Aulia Mawardi; Marlinda Marlinda
JURNAL TEKNIK KIMIA VOKASIONAL (JIMSI) Vol 2, No 2 (2022): JURNAL TEKNIK KIMIA VOKASIONAL (JIMSI)
Publisher : Politeknik Negeri Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46964/jimsi.v2i2.1693

Abstract

The construction of a chemical plant has a negative impact on the environment by producing waste containing heavy metals such as manganese (Mn). One of the treatments of waste containing heavy metals by adsorption method. The use of pectin as a biosorbent in the adsorption process has been widely carried out because it has several advantages and contains active groups such as carboxyl and hydroxyl which play an important role in the adsorption process. This research aimed to determine the adsorption capacity of manganese (Mn) using pectin from kepok banana peel as a biosorbent. Pectin was obtained from the extraction of kepok banana peels using the Microwave Assisted Extraction (MAE) method. Manganese solution was adsorbed using 1 gram mass of pectin with variable adsorption time (60, 90, 120, 150, and 180 minutes). Identification of pectin functional groups at absorption wavelengths between 1000cm-1 to 3500 cm-1 using FT-IR spectrophotometer and the analysis results obtained that there are hydroxyl groups (3423,993 cm-1), carbonyl (1638,233 cm-1), carboxylate (1736.585 cm-1), ether (1079.942 cm-1) and carbocyclic (1238.076 cm-1). Mn metal after adsorption was analyzed using AAS. The results showed that the optimum adsorption time to adsorb Mn metal was 150 minutes with an adsorbed metal capacity of 0.182 mg/g (36.403%). The adsorption of Mn followed the Freundlich isotherm equation with KF = 0.0886 mg/g.  Keywords: adsorption, adsorption isotherm, adsorption capacity, Mn metal, pectin
ANALISIS DAMPAK PERUBAHAN FEED STOCK NATURAL GAS Melany Adelia; Febri Sinta Marito Panjaitan; Muhammad Husaini Zaidan; Nova Yoga Pradana; Imam Karfendi Putro; Ibnu Eka Rahayu
JURNAL TEKNIK KIMIA VOKASIONAL (JIMSI) Vol 2, No 2 (2022): JURNAL TEKNIK KIMIA VOKASIONAL (JIMSI)
Publisher : Politeknik Negeri Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46964/jimsi.v2i2.1696

Abstract

K company is a petrochemical industry that utilizes natural gas as a raw material to produce methanol with AA grade with a purity above 99.85%. In general, PT K's methanol production undergoes four main processes, such desulphurizing, reforming, methanol synthesis and distillation. The natural gas used by PT K underwent a change in composition due to new wells upstream entering PT K in 2017. The natural gas entering PT K has a leaner composition (containing more CH4) and also has a lower sulfur content which causes a decrease in production at PT K. Keywords: Methanol Grade AA, Natural Gas, lean gas, Sulfur
PEMANFAATAN EKSTRAK KULIT BUAH NAGA MERAH BERDASARKAN PENGARUH UKURAN PARTIKEL SEBAGAI INDIKATOR ASAM-BASAPADA PROSES TITRASI Ade Era Febriani; Noorma Kurnyawaty; Firman Firman
JURNAL TEKNIK KIMIA VOKASIONAL (JIMSI) Vol 2, No 2 (2022): JURNAL TEKNIK KIMIA VOKASIONAL (JIMSI)
Publisher : Politeknik Negeri Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46964/jimsi.v2i2.1694

Abstract

Dragon fruit skin contains flavonoid compounds, one of which is anthocyanin. This anthocyanin can change color as the pH value changes so it can be applied as an acid-base titration indicator. The purpose of this research is to utilize red dragon fruit skin extract (Hylocereus polyrhizus) as an acid-base indicator in the titration process based on the influence of particle size (3.00 × 3.00 × 1.00) cm; (-14+18); (-18+20); (-20+70); (-70+100); (-100+120) mesh. The extract was obtained by maceration extraction for 24 hours with 96% ethanol solvent: 10% citric acid. The results of determining the color change trajectory were obtained when the acidic condition was light brown and when the alkaline condition was bright yellow. The highest result was obtained at particle size of -14 + 18 mesh with a rendement of 30.42%. The extract was tested as an acid-base titration indicator with a pH range of 8.3–10.0 for the pp indicator as a comparison, while methyl orange was used as a comparison with a pH of 3.1 – 4.4. So that this red dragon fruit peel extract can be used as an indicator in acid-base titration. Keywords: Acid-base titration, particle size, red dragon fruit peel
APLIKASI BIOPLASTIK DARI TEPUNG PORANG SEBAGAI KEMASAN MAKANAN Fitriyana Fitriyana; Qhomaruddin Qhomaruddin; Mardhiyah Nadir
JURNAL TEKNIK KIMIA VOKASIONAL (JIMSI) Vol 2, No 2 (2022): JURNAL TEKNIK KIMIA VOKASIONAL (JIMSI)
Publisher : Politeknik Negeri Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46964/jimsi.v2i2.1695

Abstract

The use of plastic as packaging is inseparable from everyday life. Along with the increasing human attention to the environment, many studies have been carried out to find packaging materials as a substitute for synthetic plastics that are able to degrade naturally (bioplastics) from natural polymer materials such as starch, cellulose and fiber. The starch used is sourced from porang flour. The purpose of this study is to determine the effect of the use and characteristics of porang flour bioplastics as food packaging on the durability and quality of food during storage. This study made a bioplastic of porang flour by dissolving chitosan 1.5% (w/v) with 0.5% acetic acid then adding 2.5 g of porang flour, 3% glycerol (v/v) and aquades then heated to 80oC. Then it was molded and dried to a temperature of 60oC. The resulting bioplastics were applied to food, namely So Nice sausage. Food packaging conditions varied in open and closed places (without wrapping, plastic wrapping and bioplastics) observed for 8 days. The characteristics of the resulting bioplastics include water content of 60.20%, water absorption of 92.35%, water vapor permeability of 0.7391 g./h.m2 and biodegradation of 100% in 7 days. The results of visual observations showed that sausages began to break down on the second day (in the open) and the first day (on the closed place). Based on visual observations, bioplastics were not good at maintaining the durability and quality of food during storage.. Keywords : bioplastics, glycerol, food packaging, chitosan, porang flour
PEMBUATAN BIOBRIKET DARI CAMPURAN KULIT KACANG TANAH DAN TEMPURUNG KEMIRI DENGAN MENGGUNAKAN METODE KARBONISASI Kusyanto Kusyanto; Rinda Handayani; Andri Kurniawan
JURNAL TEKNIK KIMIA VOKASIONAL (JIMSI) Vol 2, No 2 (2022): JURNAL TEKNIK KIMIA VOKASIONAL (JIMSI)
Publisher : Politeknik Negeri Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46964/jimsi.v2i2.1692

Abstract

Biobriquettes are one of the alternative energy solid fuels that are the basic materials of a biomass mixture. The addition of the word bio to briquettes is due to the addition of biomass as a raw material. Peanut skin and hazelnut shell that is only wasted resulted in the accumulation of agricultural waste in the form of peanut skin and hazelnut shell. To overcome this, further research is needed to have added value. In this study, it aims to influence the effect of the comparison of the composition of raw materials of peanut skin charcoal and hazelnut shells against proximate values and heat values. This study used carbonization methods. From the results of the analysis obtained the highest heat value in the treatment E was 6006 Cal/gr. Briquette water content ranges from 4 - 5% and the lowest water content was obtained in treatment B which was 4.08%. The results of the analysis of ash levels ranged from 11 - 17% and obtained the lowest ash levels in treatment B, which was 11.92%.  Volatile matter results ranged from 26 - 28% and the lowest Volatile Matter level at D treatment was 26.57% and fixed carbon results ranged from 50 - 55% and the highest fixed carbon result was at 55.96%.Keywords: bean skin, hazelnut shell, biobriquette, proximate

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