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All Journal Teknika: Jurnal Sains dan Teknologi IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Jurnal Inovator Kinetika Jurnal Pendidikan dan Teknologi Indonesia International Journal of Research in Vocational Studies (IJRVOCAS) Aptekmas : Jurnal Pengabdian Kepada Masyarakat Journal of Applied Agricultural Science and Technology

Abu Hasan

Politeknik Negeri Sriwijaya

Author-ID : 2856371

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Implementation of an omnidirectional antenna on a 4G repeater with a working frequency of 1800 MHZ Ade Silvia Handayani; Nasron Nasron; Rivaldo Arviando; Abu Hasan; Sopian Soim
Jurnal Teknika Vol 17, No 2 (2021): Available Online in November 2021
Publisher : Faculty of Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/tjst.v17i2.12051

In this study, an omnidirectional antenna is used as a 4G signal amplifier with a frequency of 1800 Mhz. Omnidirectional antennas typically have a gain of about 3-12 dBi. The application of an omnidirectional antenna on a 4G signal amplifier repeater is used as a donor antenna facing the base transceiver station (BTS) source. Applying an omnidirectional antenna as a donor antenna will allow signal transmission from all directions to the BTS to be received from all directions. This antenna will serve or only emit signals in the vicinity of 360 degrees. While at the top of the antenna, there is no radiation signal. The voltage standing wave ratio (VSWR) test results with the MMANA test software get a reading of <1.5, with an impedance of 49 ohms and a gain of >6.5 dB. The radiation distribution pattern from the plotting results shows a circular spread of 360 degrees. This antenna is suitable for donor antennas that can receive signals from the BTS from all directions from the angle of incidence. From testing with an open signal application and comparing parameters before and after using a repeater, the download speed increased from 0.2 Mbps to 2.3 Mbps, and the latency increased from 159 ms to 73 ms. The scanning spectrum in auto mode gets a mid-frequency reading of 1867.20Mhz when the repeater is on. The results achieved in the service of this 4G signal booster tool are being able to understand 5th generation materials such as 5G technology. Several countries have started to study 5G technology by forming consortiums such as METIS, 5GNOW, and others. Pada penelitian ini digunakan antena omnidirectional sebagai penguat sinyal 4G dengan frekuensi 1800Mhz. Antena omnidirectional biasanya memiliki penguatan sekitar 3-12 dBi. Penerapan antena omnidirectional pada repeater penguat sinyal 4G digunakan sebagai antena donor yang menghadap ke sumber base tranceiver station (BTS). Penerapan antena omnidirectional sebagai antena donor akan memungkinkan transmisi sinyal dari segala arah ke BTS dapat diterima dari segala arah. Antena ini akan melayani atau hanya memancarkan sinyal di sekitarnya atau 360 derajat. Sedangkan di bagian atas antena, tidak ada sinyal radiasi. Hasil pengujian voltage standing wave ratio (VSWR) dengan software uji MMANA mendapatkan pembacaan <1,5, dengan impedansi 49 ohm dan gain >6,5 dB. Pola sebaran radiasi dari hasil plotting menunjukkan penyebaran melingkar sebesar 360 derajat. Antena ini cocok untuk antena donor yang dapat menerima sinyal dari BTS dari segala arah dari sudut datang. Dari pengujian menggunakan aplikasi open signal, didapatkan perbandingan parameter sebelum dan sesudah menggunakan repeater, dari kecepatan download 0.2 Mbps menjadi 2.3 Mbps dan peningkatan latency dari 159 ms menjadi 73 ms. Spektrum pemindaian dalam mode otomatis mendapatkan pembacaan frekuensi tengah 1867.20Mhz saat repeater aktif. Hasil yang dicapai di pengabdian alat penguat sinyal 4G ini adalah dapat memahami materi generasi ke-5 seperti teknologi 5G. Seperti beberapa negara telah memulai mengkaji teknologi 5G dengan membentuk konsorsium seperti METIS, 5GNOW, dan lainnya.

Biofuel from Pyrolysis Waste Lube Oil of Refinery Unit III Using Fly Ash of Coal Combustion as a Catalyst Nedia Sandika; Yohandri Bow; Abu Hasan
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 6, No 3 (2021): October 2021
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v6.i3.130

Lube oil waste obtained from Utilitis Unit, Crude Distillation Unit, Crude Distillation & Ligh End Unit at Refinery Unit III Plaju Palembang South Sumatra. The process of pyrolysis of lube oil waste using fly ash catalyst is expected to produce fuel oil. Lube oil waste pyrolysis uses Fly Ash catalysts with a total catalyst of 500 gr with a temperature range variation of 0-85oC, 85-16 oC, 165-250oC, 250-300oC, and 300-350oC, while pyrolysis of waste lube oil without catalysts with a variation in the temperature range of 0-85oC, 85-165oC, 165-250oC, 250-300 oC, and 300-350 oC. Temperature range variations are referenced based on boiling route solvent fraction (0-85 oC), premium fraction (85-165 oC), kerosene fraction (165-250 oC) and diesel (250-350 oC). Solvent fraction can not be analyzed because there is no product result whether it is pyrolysis process using catalyst or without catalyst, Premium Fraction is only produced using catalyst, Sulfur content analysis result, Mercaptane sulfur, Density meets Premium fuel specification except Octane Number 76.6. Sulfur content, Density and flash point analysis of pyrolysis products using catalysts and without catalysts in accordance with kerosene products in the market. Solar fraction of pyrolysis process using catalyst and without catalyst, Analysis results density, sulfur content, Total acid number, Water Content entered solar product specifications but cetane numbers 43.2 and 45.6 have not met the specifications of solar products.

Pyrolysis Process of Fatty Acid Methyl Ester (FAME) Conversion into Biodiesel Bambang Irawan; Rusdianasari; Abu Hasan
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 1 No. 2 (2021): IJRVOCAS - August
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Biodiesel is a biomass fuel that can replace petroleum diesel fuel. One of the advantages of biodiesel fuel as renewable energy source that it is more environmentally friendly than fossil fuels because biodiesel significantly reduces greenhouse gas emissions compared to fossil fuels. FAME (fatty acid methyl ester) is a derivative product of CPO (crude palm oil) that has been treated both physically and chemically. The main advantage of FAME lies in the low content of impurities, especially sulphure and metal content. FAME comes from vegetable oil raw materials, which contain high enough fatty acids, around 61-62%, and nowadays, it is used as a mixture with petroleum diesel. The characteristics of biodiesel obtained from the conversion of FAME into biodiesel by pyrolysis at a temperature range of 160 – 200 oC indicate that the biodiesel produced is density 0.8475 kg/m3, viscosity 3.053 cSt, calculated cetane index (CCI) 48.5, flash point 59oC, moisture content 223 ppm, and sulphure content of 0.07% m/m. The results obtained are below the maximum limit of the specified biodiesel quality requirements.

Syngas Underground Coal Gasification (UCG) Testing of In-Situ Type Lignite Coal and Fracture Type Coal Julismi; Rusdianasari; Abu Hasan
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 1 No. 2 (2021): IJRVOCAS - August
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

The advancement and utilization of technology require energy, namely electricity and fuel energy. The increasing cost of fossil energy, the scarcity of non-renewable energy sources and the increasing energy demand requires diversification of energy resources. One of the new renewable energy sources currently being developed in Indonesia is Underground Coal Gasification (UCG). UCG is a new technology that utilizes unmined coal. In the UCG process, coal is burned underground and the syngas produced is collected through bore wells for processing or direct use. The resulting syngas is analyzed to see the effect of in-situ type of lignite coal and fractured type of coal on syngas production using the UCG method. Tests carried out on fracture-type lignite coal for 120 minutes with a sample weight of 1.3 kg obtained a CH4 gas concentration of 0.24%, which is relatively low compared to the in-situ type lignite coal sample CH4 gas concentration of 1.13%. The CO2 concentration was 54.46% in the fracture sample, and the In-Situ type sample was 52.19%. The O2 content with a value of 19.43% for the Fracture Type sample and 4.94% for the In-Situ type sample. Fracture Type and In-situ Lignite Coal produced fewer syngas products due to UCG testing than high-rank coals such as sub-bituminous and bituminous coal.

Syngas Underground Coal Gasification (UCG) Testing of Fracture Type Subbituminous Coal in Laboratory Scale: Underground Coal Gasification (UCG) Joniken Lesmana; Abu Hasan; Aida Syarief
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 1 No. 2 (2021): IJRVOCAS - August
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Underground Coal Gasification is a method used to convert underground coal seams into a gaseous product commonly called synthetic gas through a flammable chemical process without going through a conventional mining process. The UCG concept was first developed in England which was then continued by the Soviet Union in field trials of UCG which was used as a power plant. In Indonesia, Tekmira has begun to research UCG, but there are very few publications on UCG. Therefore, it is necessary to conduct research on laboratory scale UCG for analysis of gas products to support the study of renewable energy. UCG testing begins with sample preparation followed by laboratory-scale coal gasification testing. There is a sample of coal used in the test, namely Subbituminous Coal from Tanjung Enim, South Sumatra. Initial combustion is carried out by flowing propane gas into the reactor tube using a burner. Furthermore, a mixture of oxygen gas and compressed air is used to keep the coals burning. After obtaining the gas from the combustion, then gas sampling is carried out using a suction pump which will be stored in a tedlar gas bag. Combustion gas products will be checked for syngas concentration using a Gas Chromatography tool to determine the concentration of CH4, CO2 and O2 gases. From the tests that have been carried out, the gas concentrations of O2 are 3.67%, CO2 41.51%, and CH4 6.93%. Coal in the confined test conditions has good conditions with indications of seeing the concentration of CH4, O2, and CO2 gas.

Pemanfaatan Karet Alam Untuk Produk Barang Jadi Di Desa Suban Jeriji Kecamatan Rambang Dangku Kabupaten Muara Enim Abu Hasan; Robert Junaidi; KA Ridwan
Aptekmas Jurnal Pengabdian pada Masyarakat Vol 2, No.2 (2019) : APTEKMAS Volume 2 Nomor 2 2019
Publisher : Politeknik Negeri Sriwijaya

Besides the domestic consumption of natural rubber into rubber goods is still very small, Indonesia is also still dependent on the export of these commodities abroad. The new natural rubber producing countries which are quite troubling the world natural rubber market including Indonesia are also China, Vietnam and Cambodia. One of the main weaknesses of Indonesian farmers' natural rubber is dirty. This is a cause of low prices. The cost of cleaning the rubber is too high. Therefore it is indeed necessary to have a way to diversify rubber products or increase the consumption of natural rubber in the country is very important. In order for many people to produce rubber goods, this means that many people know that cleaning rubber is necessary and does not need to be polluted. In Palembang itself, there was PT. Sri Bina Havea and Intirub Tire Factory, but both are gone. Thus, the way to produce rubber goods of natural rubber needs to be socialized to the Indonesian people, especially in South Sumatetra. This certainly greatly influences the development of the local economy given that South Sumatetra is the largest producer of natural rubber in Indonesia and this result is mostly produced by farmers rather than large companies. For this reason, this service aims to provide information about the technology of processing natural rubber into rubber goods to the public. This service was carried out on the people of Suban Jeriji village, Rambang Dangku Sub-District, Muara Enim Regency, South Sumatra. The method used in this activity is a lecture and interactive discussion about the manufacture of natural rubber finished goods with the help of LCD and accompanied by providing samples of finished goods products from semi-finished natural rubber. The target to be achieved in this activity is the formation of insights into thinking that natural rubber goods are a way to overcome the ever-uncertain prices of natural rubber on the market. The long-term target of this activity is perhaps one day there are students or students who are interested in becoming entrepreneurs of natural rubber goods.

PPTTG PENERAPAN INSTALASI PENGOLAHAN BERSIH MENGGUNAKAN SISTEM FILTRASI BERTINGKAT Leila kalsum; Abu Hasan; Arfan Hasan
Aptekmas Jurnal Pengabdian pada Masyarakat Vol 2 No 3 (2019): APTEKMAS Volume 2 Nomor 3 2019
Publisher : Politeknik Negeri Sriwijaya

Application of technology to the community program is intended to help solve the problem of clean water that exists in SMP Negeri 3 and SMP PPT in Kenten Laut, Talang Kelapa District, Banyuasin. Before this program was held, the condition of the water used by the school was quite apprehensive because it only utilized the water available in the swamps and rivers around the school. The available water has poor characteristics, especially containing turbidity and iron that have not yet met the standard. Considering such conditions, we apply the results of our research to be able to assist these two schools in providing clean water through the Application of Water Treatment Plants. This installation is quite simple and easy to operate, where the installation consists of several main process such as netralitation, coagulation, floculation, sedimentation, and stage of filtration. The quality of clean water product from the installation has fulfill the requirements as a source of clean water based on Permenkes RI No.492 / Menkes / Per / IV / 2010.

Sintesis dan Karakterisasi Selulosa Asetat dari A-Selulosa Fiber Cake Kelapa Sawit Indarianti Utami; Abu Hasan; Robert Junaidi
Jurnal Pendidikan dan Teknologi Indonesia Vol 1 No 9 (2021): JPTI - September 2021
Publisher : CV Infinite Corporation

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52436/1.jpti.86

Penelitian tentang sintesis dan karakterisasi selulosa asetat dari ?-selulosa fiber cake kelapa sawit ini telah dilakukan dengan menggunakan anhidrida asetat sebagai acetylating agent. Penelitian ini bertujuan untuk mendapatkan selulosa asetat dengan klasifikasi selulosa diasetat yang memiliki yield produk yang tinggi, mempelajari pengaruh variasi rasio selulosa:anhidrida asetat, waktu asetilasi, dan suhu asetilasi untuk mendapatkan selulosa asetat dengan kondisi yang optimal dari ?-selulosa fiber cake kelapa sawit. Penelitian ini menggunakan variasi rasio selulosa:anhidrida asetat (1:5; 1:10; 1:15), waktu asetilasi (0,5; 1; 1,5; 2; 2,5)jam, dan suhu asetilasi (25 dan 40) oC menghasilkan 30 sampel produk. Hasil penelitian menunjukkan bahwa selulosa asetat yang didapatkan berupa selulosa diasetat dengan bentuk padatan berupa serbuk, berwarna putih gading, dan tidak berbau serta memiliki kadar ?-selulosa sebesar 84,29 % dengan kadar air 9,16 % pada rasio selulosa:anhidrida asetat (1:10), waktu asetilasi 1,5 jam, dan suhu asetilasi 40oC dengan nilai yield produk, kadar asetil, dan derajat substitusi berturut-turut 49 %, 39,97 %, dan 2,5. Research on the synthesis and characterization of cellulose acetate from palm oil ?-cellulose fiber cake has been carried out using acetic anhydride as an acetylating agent. This study aims to obtain cellulose acetate with cellulose diacetate classification which has a high product yield, study the effect of variations in the ratio of cellulose:acetic anhydride, acetylation time, and acetylation temperature to obtain cellulose acetate with optimal conditions from palm oil ?-cellulose fiber cake. This study used variations in the ratio of cellulose:acetic anhydride (1:5; 1:10; 1:15), acetylation time (0.5; 1; 1.5; 2; 2.5) hours, and acetylation temperature (25 and 40) oC produces 30 product samples. The results showed that the cellulose acetate obtained was in the form of cellulose diacetate with a solid form in the form of powder, ivory white, and odorless and had 84.29% of a-cellulose content with 9.16% of a moisture content at the ratio of cellulose:acetic anhydride (1 :10), acetylation time 1.5 hours, and acetylation temperature 40oC with product yield, acetyl content, and degree of substitution 84.6%, 39.97%, and 2.5, respectively.

Analisa Konsentrasi NaOH dan Temperatur Pemanasan Terhadap Kadar Selulosa dan Kadar Lignin dari Batang Pisang Klutuk Menggunakan Alat Delignifikasi sebagai Bahan Baku Pembuatan Bioetanol. Rafit Arjeni; Abu Hasan; Aida Syarif
Jurnal Inovator Vol 5 No 1 (2022): Teknologi proses Manufaktur
Publisher : LPPM Politeknik Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37338/ji.v5i1.219

Indonesia is a country with the largest energy consumption in southeast asia and fifth in asia pacific in primary energy consumption, after a chinese, india, japan, and south korea. If considered sectorally, so having the greatest share of the transportation sector, is as much as 42%, higher than the industrial sector with of 36. Hence the need of the use of environmentally friendly alternative energy and new and renewable energy ( ebt bioetanol ) as. Bioetanol can come from organic waste as klutuk stems of a banana tree. To research it will study and to making delignifikasi adsorbsi klutuk bioetanol of a banana stem. To research will be done study delignifikasi and adsorbsi to making bioetanol of a banana stem klutuk. First, perform the process pratreatmen and delignifikasi in a banana stem klutuk with variations konsetrasi naoh 10%, 20%, 30% and temperature warming namely 100oC, 125oC, 150oC, 175oC, and 100oC. At the delignifikasi this can be said that on the concentration naoh 10% in 150oC, warming temperatures produce levels of cellulose and lignin best, to the cellulose and lignin 81,3% levels 10,1%. A banana stem fiber that has been in delignifikasi, next will be done and also hydrolysis fermentation to produce bioetanol. Bioetanol produced the application will be done distillation to separate bioetanol and water. Bioetanol next analysis used a gcms and obtained bioetanol 80,34%.

PEMBUATAN DAN UJI KARAKTERISTIK PAPAN SERAT DARI SERAT SABUT KELAPA DAN PLASTIK POLIPROPILENA DAUR ULANG Syahdilla Fadel Muhammad; Abu Hasan; Fadarina
KINETIKA Vol. 12 No. 2 (2021): KINETIKA 01072021
Publisher : Politeknik Negeri Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar

The use of wood as industrial raw material has increased every year, while the availability of wood has decreased. Besides that, the increase in plastic waste is also a big problem. By making fiberboard from coconut coir fiber and recycled polypropylene plastic, it is hoped that it can increase the added value of coconut coir so that it can become a substitute material to replace the increasingly limited use of wood and also as a way to minimize polypropylene plastic waste in the environment. Based on the test results, the best fiberboard is a fiber board with a random arrangement of fibers with a pressing time of 60 minutes with a moisture content value of 1.18%, a density value of 0.48%, a water absorption value of 4.14%, a thick swelling value. amounted to 4.52%, the MOE value was 4050.80 kg/cm3, and the MOR value was 242 kg/cm3. Overall, the random fiber arrangement fiberboard with a pressing time of 60 minutes has met the SNI 03-2105-2006 standard, but only the MOE value has not met the standar

Co-Authors Ade Silvia Handayani Afiifa Aaliyah Maharani Aida Syarief Aida Syarif Arfan Hasan Ayuni Lestari Bambang Irawan Fadarina Feni Sri Erani Husni, Nyayu Latifah Indah Purnamasari Indah Purnamasari1 Indarianti Utami Joniken Lesmana Julismi KA Ridwan Leila Kalsum M. Sobri Muhammad Yerizam Nasron Nasron Nedia Sandika Rafit Arjeni Rivaldo Arviando Robert Junaidi Rusdianasari Sabilal Rasyad Sopian Soim, Sopian Syahdilla Fadel Muhammad Ulfa Meila Anggriani Yohandri Bow

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