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All Journal Jurnal Teknik Kimia USU Jurnal Media Infotama Jurnal Pangan dan Agroindustri Sriwijaya International Seminar on Energy-Environmental Science and Technology Indonesian Journal of Chemical Science JURNAL PENDIDIKAN TAMBUSAI Kinetika Jurnal Pendidikan dan Teknologi Indonesia Teknika Sains : Jurnal Ilmu Teknik Jurnal Teknologi Chemical Engineering Journal Storage (CEJS) Jurnal Teknik Kimia USU Jurnal Teknologi Kimia Unimal JURNAL TEKNOLOGI PANGAN DAN ILMU PERTANIAN (JIPANG) Jurnal Riset Rumpun Ilmu Teknik (JURRITEK) Innovative: Journal Of Social Science Research Serambi Engineering J-CEKI Jurnal Teknologi Riset Terapan
Erwana Dewi
Politeknik Negeri Sriwijaya
Agriculture, Biological Sciences & Forestry Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Transportation Other

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Journal : Kinetika

 1 
Effect Of Addition Of Natural Rubber (Sir 20) And Synthetic Rubber (Tire Used) Erlinawati, M.T, Ir.; Dewi, Erwana
KINETIKA Vol. 1 No. 1 (2011): KINETIKA 01032011
Publisher : Politeknik Negeri Sriwijaya

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Abstract

Penambahan senyawa polimer, seperti karet alam (SIR 20) dan karet sintetis (Ban bekas) ke dalam Aspal SRC (Singapore Refining Company) Pen. 60/70, pada dasarnya bertujuan untuk menghasilkan Aspal Karet dengan keelastisan yang baik. Pada penelitian ini, jumlah penggunaan karet alam (SIR 20) yang ditambahkan ke dalam 300 gram aspal SRC divariasikan sebanyak 0, 5, dan 10 gram, sedangkan jumlah karet sintetis (Ban bekas) divariasikan sebanyak 100, 150, dan 200 gram. Senyawa polimer di dalam pembuatan Aspal Karet ini berperan sebagai bahan aditif dalam peningkatan mutu aspal. Aspal Karet dengan variasi masing-masing komposisi di dalam penelitian ini, dilakukan analisis terhadap parameter penetrasi, daktilitas, berat jenis, titik nyala, dan titik lembek. Adapun hasil dari penelitian ini menunjukkan bahwa hasil analisis parameter dari variasi komposisi tersebut sangat jauh dari analisis parameter Aspal Standar, sehingga Aspal Karet dengan variasi komposisi tersebut tidak memenuhi persyaratan pengujian Aspal Standar dengan metode SNI. Hasil analisis Aspal Karet yang memiliki sifat-sifat fisik yang lebih baik adalah Aspal Karet dengan komposisi karet alam (SIR 20) sebanyak 10 gram dan karet sintetis (Ban bekas) sebanyak 100 gram menghasilkan angka penetrasi sebesar 204,4 mm, daktilitas 30,5 cm, berat jenis 1,079 gr/cc, titik nyala 211oC, dan titik lembek 27,6oC.
RANCANG BANGUN ALAT KEMPA HIDROLIK (PENGARUH KOMPOSISI, TEKANAN DAN SUHU TERHADAP SIFAT FISIK PAPAN PARTIKEL) Dewi, Erwana
KINETIKA Vol. 9 No. 2 (2018): KINETIKA 01072018
Publisher : Politeknik Negeri Sriwijaya

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Abstract

Along with the times, the need for furniture is also increasing, where the use of wood is also increasing. However, the availability of wood is increasingly limited and the high demand for furniture will require alternative raw materials for wood. One alternative offered is a particle board made from a mixture of empty bunches of palm oil and wood powder. In the manufacture of particle board requires technology in the form of press to press and print wood powder that has been mixed with adhesive at certain temperatures and pressures. This press tool for printing particle boards works with the compressive force generated from the hydraulic pump. The purpose of this study was to design a press with high pressure-suppressing components to produce a particle board measuring 20 cm x 5 cm x 1 cm and will be tested based on JIS A 5908 - 2003 in the form of density, moisture content, thickness development, water absorption capacity and the modulus is broken. The Hydraulic Press Tool is capable of operating up to a maximum pressure of 3 tons, a maximum temperature of 400℃ and a heating speed of 3℃/minute. The resulting fracture modulus of the particle board did not meet JIS A 5908 - 2003. The best particle board was particle board using adhesive Polychloroprene with a composition of 60% adhesive, 24% OPEFB and 16% teak wood powder, with operating pressure of 30 MPa and temperature of 150℃ where the value of density, water content, density and water absorption is 0.39gr/cm3 ; 8.4%; 7%; 85.4%
SIFAT FISIK VULKANISAT KARET DENGAN BAHAN PENGISI VARIASI TANAH LIAT DI BERBAGAI LAPISAN AREA TAMBANG PT. BUKIT ASAM (PERSERO) TBK. Hasan, Abu; Dewi, Erwana; Purnamasari, Indah; Irawan, Dewanda; A.S, Putu Yoga
KINETIKA Vol. 10 No. 1 (2019): KINETIKA 01032019
Publisher : Politeknik Negeri Sriwijaya

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Abstract

This study aims to study the physical characteristics of vulcanized rubber using various clay fillers from layers in the PT. Bukit Asam (Persero) Tbk .. This research was conducted 6 formulas (1,2,3,4,5,6), each variation of clay type INT A2-B1, OBA1, Lower C, INT A1-A2, INT B2-C, INT B1-B2. Then with the same variation carried out the addition of chemicals in the form of JHS-69 and PEG 4000 in each of the 6 formulas as much as 1 phr. The natural rubber used is RSS-1 then rubber is modified and vulcanized along with other process materials in the open mill. Based on the results of the study it has been analyzed that rubber compound number 4 using JH-S69 is better than other rubber compounds, which have a tensile strength value of 17.2 Mpa, elongation at break of 670%, modulus of 300% 4 Mpa, and tear strength 33 kN / m. Whereas the best rubber compound using PEG 4000 is compound number 2 which has a tensile strength value of 16.6 Mpa, elongation at break of 690%, modulus of 300% 2.4 Mpa, and tear strength 28.8 kN / m. From the results of the analysis of the physical properties, the two compounds meet the SNI 0778:2009 standards to be used as shoe soles products.
RANCANG BANGUN ALAT TIPE SPRAY DRYER UNTUK PROSES PENGERINGAN SUSU BUBUK BERBASIS JAGUNG MANIS (Zea mays saccharata) Putri, Astri Oktaviana; Mentari, Inez Artemisia; Julyantiya, Robby Try; Yuliati, Selastia; Dewi, Erwana
KINETIKA Vol. 12 No. 3 (2021): KINETIKA 01112021
Publisher : Politeknik Negeri Sriwijaya

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Abstract

Drying is one of techniques used in food preservation. Spray Dryer is a type of dryer that can change the feed from a fluid state into granules and then convert again into particles which are dried continuously in hot drying media. Spray dryer uses liquid atomization to form droplets, then the droplets formed are dried using dry air with high temperature and pressure. This 31emperat aims to produce high quality corn porridge milk. The drying process is carried out by a batch process where the material is put into a spray dryer and the process is allowed for a certain period of time. The heat transfer process that occurs in this tool is the main variable to determine the efficiency and performance of the tool produced. The drying process of milk powder was carried out at a temperature of 150° C and 160°C in 75 minutes. Based on the analysis, the calculation of heat transfer rate, drying rate, and thermal efficiency obtained a powdered milk product of 0.8 grams with a convection heat transfer rate of 1.6924 kJ, a conduction heat transfer rate of 1.299 kJ, a drying rate of 31.594 kg / hour. And thermal efficiency of 35%.
The Oxygenated Drinking Water Erwana Dewi
KINETIKA Vol. 13 No. 01 (2022): KINETIKA 01032022
Publisher : Politeknik Negeri Sriwijaya

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Abstract

Oxygen is an essential substance for humans, available in the air and can be freely enjoyed. At present, oxygen is not only supplied through the respiratory system, but is also supplied through the digestive system. The alternative is to supply oxygen through drinking water. In this research the design process will be carried out to produce drinking water that contains oxygen, or oxygenated drinking water. The process to make drinking water by using the membrane RO (Reverse Osmosis) and the processed by injecting oxygen using Aquatic Oxygenator. In the procesess of the RO membran and the Aquatic Oxygenator has oxygen as 100 ppm optimum in drinking water. The effect of oxygenization time and temperature on oxygen levels is the dissolved oxygen content in drinking water does not increase significantly, only in the range of 100-113.4 ppm. When the oxygenization temperature increases, the solubility of oxygen in water decreases. The effect of drinking water volume and oxygenation time on dissolved oxygen levels in water  the dissolved oxygen level reaches 100 ppm, and continues with oxygenation, the measurement number does not change.
COFFEE AIR FRESHENER GEL PRODUCTION BASED ON KAPPA CARRAGEENAN, XANTHAN GUM, AGAR-AGAR WITH PATCHOULI OIL ADDITION Rahma Aji Kurniawan; Siti Khodijah; Erwana Dewi; Taufik Jauhari
KINETIKA Vol. 13 No. 02 (2022): KINETIKA 01072022
Publisher : Politeknik Negeri Sriwijaya

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Abstract

Air freshener products on the market generally use synthetic fragrances that are harmful to health. Air fresheners can be made from natural ingredients based on kappa carrageenan, xanthan gum, and agar, using coffee oil as a fragrance with and patchouli oil as a natural fixative can be aromatherapy to relieve stress and stimulate optimal brain performance. This research aims to obtain the best composition of kappa carrageenan, xanthan gum, agar and patchouli oil concentrations by comparing the research products with air freshener gel sample of commercial product. The method used is by varying the composition of kappa carrageenan, xanthan gum, and agar as a gelling agent;concentrations ofgelling agent 4 - 6% w / w; and concentration of patchouli oil 0 – 1.5%. Product analisys includes: gel strength, gel syneresis, gel viscosity at 80oC, moisture content, liquid evaporation and weight loss tests, GC-MS analysis, aroma retention test, and hedonic test. The fragrance gel product produced from a mixture of kappa carrageenan, xanthan gum, and agar with a ratio of 2: 1: 1 at concentration gelling agent 6% had the lowest syneresis 0.48% and gel strength 937.1891 gf / cm2. The addition of patchouli oil which was the most effective in maintaining fragrance, with the smallest total evaporation and weight loss was 1.5% and was quite favored by the panelists.
PENGOLAHAN CRUDE PALM OIL (CPO) MENJADI MINYAK SAWIT MERAH (MSM) MENGGUNAKAN FILTER BATUAN ZEOLIT, MEMBRAN KERAMIK DAN CARTRIDGE FILTER: PENGOLAHAN CRUDE PALM OIL (CPO) MENJADI MINYAK SAWIT MERAH (MSM) MENGGUNAKAN FILTER BATUAN ZEOLIT, MEMBRAN KERAMIK DAN CARTRIDGE FILTER Yudis Afrizal; Erwana Dewi; Mustain Zamhari
KINETIKA Vol. 13 No. 03 (2022): KINETIKA 01112022
Publisher : Politeknik Negeri Sriwijaya

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Abstract

In the manufacture of red palm oil using zeolite rock filtration, ceramic membranes and cartridge filters.Natural zeolite that can separate two or more phases of substances by using a porous ceramic membrane which is intended to separate the particles in Crude Palm Oil later. In the design of supporting tools in the manufacture of red palm oil using ceramic membrane filtration and Zeolite rocks include: CPO Filter, Stirrer, Coagulator, Stove, Circulation Pump, Zeolite Rock, Ceramic Membrane, Filter Cartridge, and Red Palm Oil Product Tank. For the treatment in this experiment, 0.1 ml of sulfuric acid and 250 ml of sodium hydroxide were added as degumming and neutralization with variations in time (2, 4, 6 minutes) and temperature (40℃, 60℃ and 80℃) with an operating pressure of 5 bar. In the results of red palm oil products, it was found that the Fatty Acids free and the peroxide value exceeds the standard of red palm oil sold in the market. The effect of the flux obtained decreases because the pores in the ceramic membrane begin to become clogged so that the volume of permeate that comes out of the oil sample decreases. The rejection obtained in this study made the rejection data increase and the beta carotene produced decreased. The results showed that the temperature of 60℃ is the optimum temperature in red palm oil research.
Co-Authors A.S, Putu Yoga Abdurrahman, RM Arif Abu Hasan Abu Hasan Adelia Rahmayanti Adis Aisyah Amini Akbar, Kiki Amin, Jaksen M. Anerasari M Anerasari Meidinariasty Anerasari Meidinariasty Anerasari, Anerasari Anhar Anhar Az’zahrah, Nandyta Rizqi Dadang S Manaf Dytha Florenza Fadia, Dinda Gading Ananda Putra Pratama Indah Purnamasari Indah Purnamasari INDAH PURNAMASARI Ir. M.T Erlinawati Irawan, Dewanda Jaksen M.A Joan Nasya Alzena Jonathan P Silalahi Julyantiya, Robby Try Kurniawan, Belly Maryani, Andini Mentari, Inez Artemisia Muhammad Ridho Triadi Muhammad Yerizam Muhammad Yerizam Mustain Zamhari Mustain Zamhari Mustain Zamhari Nabillah, Afrah Ningsih, Sintya Nyayu Fia Atindu Nyayu Fia Atindu Putri, Astri Oktaviana Rahma Aji Kurniawan Riki Wahyudi, Riki Riko, Muhamad Robert Junaidi Robert Junaidi Robert Junaidi Sari Rizky Amelia Sari Rizky Amelia Selastia Yuliati Selastia Yuliati Sintia Muharani SITI KHODIJAH Taufik Jauhari Vina Oktarianti Vinni Nursyifah Wijaya, Olvie Zahroh Yudis Afrizal Yuliani, Aliyah Yuniar Yuniar Yuniar Zain, Raina Khoirunisa