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All Journal Jurnal Teknologi Industri Pertanian Info-Teknik EnviroScienteae Jukung (Jurnal Teknik Lingkungan) Scientific Journal of Mechanical Engineering Kinematika Buletin Profesi Insinyur JTAM ROTARY Jurnal Pengabdian Ilung (Inovasi Lahan Basah Unggul)

Abdul Ghofur

Program Studi Teknik Mesin, Fakultas Teknik, Universitas Lambung Mangkurat Jl. A. Yani Km.37, Banjarbaru, Kode Pos 70714, Indonesia

Author-ID : 3828658

Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Dentistry Economics, Econometrics & Finance Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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KAJIAN SINERGITAS AGROINDUSTRI KELAPA SAWIT DAN USAHA MIKRO KECIL UNTUK MEMPRODUKSI ENERGI TERBARUKAN Hesty Heryani; EN Anugraini Dewi; A Cahyo Legowo; Abdul Ghofur; Nursiah Chairunnisa
Jurnal Teknologi Industri Pertanian Vol. 31 No. 3 (2021): Jurnal Teknologi Industri Pertanian
Publisher : Department of Agroindustrial Technology, Bogor Agricultural University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24961/j.tek.ind.pert.2021.31.3.249

Through Making Indonesia 4.0, The Ministry of Industry responds to the demands of energy needs byinnovative renewable energy development to reduce the consumption of fossil fuels such as petroleum, naturalgas and coal with agricultural biomass waste sources. The aim of this research was to synergize waste from thebiodiesel industry in the form of sterol glycosides with purun waste from creative small-scale enterprises (SMEs)to produce renewable energy as a circular economy. The method applied was in the form of descriptive analysis, followed by identifying and characterizing waste found in the biodiesel industry, as well as various purunwastes, which were collectively sampled every day for 3 months, becoming the basis for developing innovativeproducts. Interviews were conducted on 60 purun craftsmen to confirm the circular economy program beingstudied. Observations were also made in the biodiesel industry and purun craftsmen. Data processing wasobtained from the results of experiments by making briquette products referring to several parameters whichwere the basis for standardizing renewable energy products. The synergy between the two actors, namely theBiodiesel Industry and SMEs in micro-scale circular economy activities, produced environmentally friendly- renewable energy which was very helpful for purun micro and small businesses in Purun Village, Banjarbaru,South Kalimantan. Renewable energy results were from various formulas developed with the main ingredientsderived from purun biomass charcoal and biodiesel industrial waste. The advantage of the product when severalother variables met the SNI standard 01-6235-2000 had a calorific value of 5.809 cal g-1 - 6.598 cal g-1, where5.000 cal g-1 which was the SNI for briquette heat could be exceeded. The calorific value produced is equivalentto bituminous grade coal having a carbon content of above 85%.Keywords: briquettes, calor, purun, sterol glycosides, SMEs

Koefisien Hidrolika Aliran Air yang Melewati Suatu Orifice Berbentuk Segitiga Abdul Ghofur
INFO-TEKNIK Vol 2, No 1 (2001): INFOTEKNIK VOL. 2 NO. 1 2001
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v2i1.448

Kecepatan aliran air yang melewati suatu orifice yang diperoleh secara teoritis harganya harganya ternyata berbedaan dengan kecapatan aliran yang diperoleh secara eksperimen. Perbandingan kedua kecepatan ini dinyatakan dengan koefisien hidrlik untuk kecepatan, demikian pula terhadap laju aliran volume air yang melewati orifice tersebut yang dikenal dengan koefisien hidrolik untuk discharge. Dengan mengetahui koefisien-koefisien hidrolik aliran air yang melalui suatu orifice maka dapat ditentukan ula discharge aliran pada setiap saat tertentu atau pengaturan aliran fluida dapat dilaksanakan. Disamping itu juga kita akan mengetahui karakteristik sifat aliran yang akan melalui suatu orifice.Penelitian ini bermanfaat untuk mengetahui karakteristik suatu aliran yang melewati orifice sehingga pada akhirnya kita juga dapat menempatkan atau memasang suatu pipa orifice dengan tepat sehingga kerugian aliran dapat dikurangi dan kita juga akan dapat merencanakan suatu sistem perpipaan dengan baik.Dari hasil penelitian pada orifice berbentuk segitiga didapatkan hasil koefisien kecepatan rata-rata (Cv) = 0,932, koefisien discharge rata-rata (Cd) –0,805 dan koefisien konstraksi rata-rata (Cc) = 0,863.

Dampak Kerosin pada Premium Terhadap Emisi Gas CO dan HC Ditinjau dari Sistem Pengapian Kendaraan Bermotor Abdul Ghofur
INFO-TEKNIK Vol 5, No 1 (2004): INFOTEKNIK VOL. 5 NO. 1 2004
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v5i1.651

Kendaraan bermotor sampai saat ini merupakan pencemar udara utama. Gas buang kendaraan bermotor yang cukup berbahaya adalah gas buang CO dan HC yang dihasilkan dari pembakaran di ruang bakar mesin. Percobaan dilakukan menggunakan variasi kerosin 0% sampai 5% dan variasi laju putaran mesin dari 700 Rpm sampai 2500 Rpm. Kendaraan uji yang digunakan adalah kendaraan bermotor dengan sistem pengapian platina dan CDI.Tujuan penelitian ini adalah untuk mengetahui pengaruh kerosin dalam premium terhadap konsentrasi gas CO dan HC yang dihasilkan dari sistem pengapian yang berbeda. Analisis pengujian emisi gas CO dan HC dari gas buang kendaraan bermotor dilakukan dengan pendekatan secara statistik, melalui program MINITAB dengan menggunakan metode analisis varians dan regresi.Semakin tinggi kadar kerosin dalam premium akan meningkatkan kadar produksi emisi gas CO dan HC. Pada laju putaran mesin mulai 1000 Rpm sampai 2500 Rpm, setelah kondisi idle terjadi peningkatan terhadap emisi gas CO dan HC. Kendaraan bermotor sistem pengapian platina dengan sistem 2 langkah menghasilkan emisi terbesar, yaitu saat kandungan kerosin 5% dengan laju putaran mesin 700 Rpm (idle) sebesar 2,59% volume untuk gas CO dan 1079 ppm untuk gas HC. Untuk Produksi emisi terendah gas CO dan HC dihasilkan dari kendaraan bermotor sistem pengapian CDI , yaitu pada kadar kerosin 0% dengan laju putaran mesin 1000 Rpm sebesar 1.12% volume untuk gas CO dan 851 ppm untuk gas HC. Kendaraan dengan sistem pengapian CDI menghasilkan emisi gas CO dan HC yang lebih baik dari sistem pengapian platina.

PENGELOLAAN LINGKUNGAN DARI ASPEK PENANGANAN SAMPAH DAN PEMANTAUAN LINGKUNGAN DENGAN BIOINDIKATOR SERANGGA LALAT DI KAWASAN WISATA PANTAI GEDAMBAAN KOTABARU Satriansyah Satriansyah; Emmy Sri Mahreda; Abdul Ghofur; Jumar Jumar
EnviroScienteae Vol 7, No 3 (2011): EnviroScienteae Volume 7 Nomor 3, November 2011
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/es.v7i3.523

GedambaanBeachlocated on Jl. Berangas Km. 14 Kabupaten Kotabaru is one of coastal tourism objects in South Kalimantan. Which is rich of coastal potential as tourism attraction. Based on experience and pre-observation on environment management activity in several coastal tourism object the result appeared differently, especialy in waste treatment becauase there were waste production rising in some particular spots that occurred in less good management system. Considering the importance of mangrove ecosystem existence in coastal area and inclination of polution cases in the area that mostly caused by the waste, it is needed to get describtion about waste treatment methode in tourism object that included in coastal resources use. Therefore the objective of this research is to know the factors that influence the waste management around the tourism object which are 1) Supporting factors, 2) Number of waste Production and waste volume, 3) Waste sort and waste compocition, 4) Waste reduction and waste treatment, 5) To know the environment condition around the tourism object by measuring the fly density. The observation (during May until July 2011) on environment management that related to waste management and environment observation by measuring the fly density in the area should that 1) Supporting factors consist of organization, personal, tools, and budged, 2) Waste production number and waste volume are depend on the number of visitors (128 – 342 individuals perday) and climated change. The measurement of waste volume in sevent days stretched obout 1.2 – 3.2 m3 perday or 2.1 m3 perday in average, 3) Waste sort and waste compocition ; organic waste such as dry leafes and coconut shells in more frekuently found (8.7 m3) than non-organic waste such as plastics, allumunium cans, bottles and mixed waste from the sea (4.4 m3), 4) Waste reduction and waste treatment ; they were no effort to reduce waste and doing waste treatment. The waste sorting were done only on coconut shell, and the last step would be burning down the waste. The conclusion of environment observation with fly as bioindacator are 1) There is relation beetwen fly density and the waste treatment. Chi-square statistic test result should that X2 measurment (9.97) is higher than X2 table (3.84), thus rejected Ho. That stated that “There are no relation beetwen fly density and waste treatment”, 2) The fly density (3.4 – 5.2) interpreted as moderate density, 3) The fly density index ( 3.4 – 5.2 ≤ 6 ) is considered as low therefore the environment management is consider good.

ANALISIS POROSITAS DAN KERASAN PADUAN Al-12,6%Si DENGAN VARIASI WAKTU TUNGGU DALAM CETAKAN DAN MEDIA PENDINGIN HASIL PENGECORAN EVAPORATIVE Rudi Siswanto; Abdul Ghofur; Komang Aria Kresna Kepakisa
Jukung (Jurnal Teknik Lingkungan) Vol 4, No 1 (2018): MARET 2018
Publisher : Program Studi Teknik Lingkungan Fakultas Teknik Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jukung.v4i1.4663

Tujuan penelitian adalah mengetahui pengaruh waktu tunggu dalam cetakan dan media pendingin terhadap porositas dan kekerasan dari produk hasil pengecoran. Metode pengecoran menggunakan pengecoran evaporative. Material yang digunakan paduan Al-12,6%Si (daur ulang) dari piston. Tungku peleburan menggunakan tungku jenis crusibel. Paduan Al dipanaskan di dalam tungku hingga mencair, kemudian dituang ke dalam cetakan pada temperatur 700 0C. Selanjutnya didinginkan dalam cetakan dengan variasi waktu 10 dan 15 menit. Kemudian coran dikeluarkan dari cetakan dan didinginkan dengan variasi media pendingin; udara, air dan air garam selama 30 menit. Hasil pengecoran dibuat spesimen dan dilakukan pengujian porositas dan kekerasan. Hasil pengujian menunjukkan bahwa : (1) waktu tunggu dalam cetakan dan jenis media pendingin tidak berpengaruh besar terhadap porositas. (2) waktu tunggu dalam cetakan dan jenis media pendingin sangat berpengaruh terhadap kekerasan coran. Kata kunci : kekerasan, media pendingin, paduan Al-12%Si, pengecoran evaporative, porositas. The purpose of this research is to know the influence of waiting time in mold and cooling media to porosity and hardness of foundry product. The casting method uses an evaporative casting. The material used Al-12,6%Si alloy (recycle) from piston. The melting furnace uses a crucible furnace. The Al alloy is heated in the furnace until it is melted, then poured into the mold at a temperature of 700 0C. Further cooled in a mold with a time variation of 10 and 15 minutes. Then the cast was removed from the mold and cooled with a variation of the cooling medium; air, water and brine for 30 minutes. The casting result is made specimen and the porosity and hardness testing is done. Test results show that : (1) the waiting time in the mold and the type of cooling medium has no significant effect on porosity. (2) the waiting time in the mold and the type of cooling medium strongly affect the hardness of the castings.Keywords : Al-12% Si alloy, coolant medium, evaporative casting, hardness, porosity.

PEMANFAATAN FLY ASH BATUBARA DENGAN ADITIF KAOLIN SEBAGAI FILTER GAS BUANG TERHADAP EMISI GAS BUANG SEPEDA MOTOR SATRIA FU 150 Abdul Ghofur; Rudi Siswanto
Jukung (Jurnal Teknik Lingkungan) Vol 4, No 1 (2018): MARET 2018
Publisher : Program Studi Teknik Lingkungan Fakultas Teknik Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jukung.v4i1.4661

Meningkatnya jumlah kendaraan bermotor setiap tahun berdampak terhadap peningkatan gas buang, salah satu teknologi yang dapat digunakan untuk mereduksi emisi gas buang kendaraan yaitu dengan penambahan filter gas buang pada saluran gas buang kendaraan. Filter gas buang merupakan sebuah filter (penyaring) yang menggunakan keramik berpori, dimana media tersebut diharapkan dapat membantu atau mempercepat terjadinya proses penyaringan sehingga gas seperti CO dan HC dapat tersaring.Penelitian ini menggunakan tiga komposisi dari campuran fly ash dan kaolin. Dari hasil penelitian diketahui bahwa filter gas buang berbahan fly ash batubara dan kaolin memiliki kemampuan dalam mengurangi emisi gas buang HC dan CO serta dalam mengurangi tingkat kebisingan. Dibandingkan dengan knalpot tanpa filter gas buang, persentase tertinggi filter gas buang komposisi A dalam mengurangi emisi HC sebesar 87,89 % pada rpm idle, sedangkan untuk CO sebesar 78,21 % pada rpm idle. Persentase tertinggi filter gas buang komposisi B dalam mengurangi emisi HC sebesar 85,29 % pada rpm idle , sedangkan untuk CO sebesar 72,13 % pada rpm idle. Persentase tertinggi filter gas buang komposisi C dalam mengurangi emisi HC sebesar 76,11 % pada rpm idle , sedangkan untuk CO sebesar 66,57 % pada rpm idle.Kata Kunci: emisi gas buang, filter gas buang, fly ash, kaolin.With the increased motor cycle, every year have been affecting the populated from combustion gas, one of the technology that can reduce the amount of combustion gas is to install filters on the exhaust nozzle. Exhaust filters is a porous permeable ceramics filterer, where it should aid or hasten the filtering process like carbon monoxide (CO) and hydro carbon (HC). In this experiment using three types of combined fly ash and kaolin. From the result known that combined fly ash and kaolin can reduce emission gas of CO and HC as well as the noise level. In result known that exhaust filters is superior in overall performance and reducing HC emission than any standard exhaust nozzle. Comparing between nozzle without filterer, with type A composition the highest percentage of HC decreased emission by 87.89% in idle rpm, while the highest percentage of CO decreased emission by 78.21% in idle rpm. On type B composition, the highest percentage of HC decreased emission by 85.29% in idle rpm, while the highest percentage of CO decreased emission by 72.13% in idle rpm. Last with type C composition the highest percentage of HC decreased emission by 76.11% in idle rpm, while the highest percentage of CO decreased emission by 66.57% in idle rpm. Key word : cly, exhaust filters, exhaust gas emission, fly ash.

CATALYTIC CONVERTER BERBAHAN GIPSUM DENGAN CAMPURAN SERBUK TEMBAGA TERHADAP EMISI GAS BUANG Trisna Aditya; Abdul Ghofur
JTAM ROTARY Vol 1, No 2 (2019): JTAM ROTARY
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jtam_rotary.v1i2.1745

The purpose of this study is to find out the use of Gypsum-based Catalytic Converter and a mixture of Copper Powder Against Exhaust Gas Emissions and Engine Performance. This study uses an experimental method, the population in this study was Suzuki Satria FU motorcycle in 2009, the data of this study were numbers that showed the exhaust gas content of CO, HC. This research was carried out in the Banjarmasin environment office using a gas analyzer and was also carried out in the Banjarmasin plug and play workshop by using a dynamometer. The technique used in data collection was the variation in rpm and number of compositions. From experiments with three different compositions, the following results were obtained: (1) The results of this study are: the form of Catalytic Converter with composition C, the level of HC emission reduction is maximum of 78,91%, the level of CO emission reduction is 82,96%. The form of Catalytic Converter with plate variation 6 (six), the maximum level of CO2 emission reduction is 29,56%, the level of CO emission reduction is 49,32%, and the level of HC emission reduction is 82,92%. (2) Using a Catalytic Converter produces a power of 10,29 Hp and a Torque of 10,35 Nm. Keywords: Catalytic Converter, Emission, Gypsum, Muffler, Concentration

PEMANFAATAN LIMBAH CANGKANG BIJI KARET DENGAN ADITIF TEMPURUNG KELAPA SEBAGAI BAHAN BAKAR ALTERNATIF MELALUI TEKNOLOGI PEMBRIKETAN Randi Nasarudin; Abdul Ghofur
JTAM ROTARY Vol 1, No 1 (2019): JTAM ROTARY
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jtam_rotary.v1i1.1400

The development of alternative energy sources that can replace fuel oil is very important to utilize natural resources optimally and environmentally. The shell produced from rubber plants is the main ingredient in this study, while the coconut shell is an additional material used to increase the calorific value of alternative fuels which is often referred to as Briquette. The purpose of this study is to determine the effect of variations in raw material composition and variations in pressure on the quality of rubber shells and coconut shell waste briquettes according to SNI standards. The raw material for rubber shell and coconut shell is processed into charcoal using carbonization method with a variation of a mixture of 85%: 15%, 90%: 10% and 95%: 5% with 5% adhesive. Then mix the printed material with a pressure of 300 kg/cm2 and 100kg/cm2. The quality parameters of briquettes are based on SNI 01-6235-2000 standards with moisture content, ash content, volatille matter content, and lacquer value. The results of the study showed that the sample b1 with 85% injection: 15% print pressure 300kg/cm2. The briquette with the sample code b1 has a water content value of 5,10432%, ash content of 14,8604%, volatile matter content of 12,8002%, carbon value of 66,8225% and heating value of 6576.592501 cal/gr. But overall the briquettes have not met the standards of SNI 01-6235-2000 concerning the quality of wood charcoal briquettes. Because the ash content of the briquette exceeds the maximum limit that has been determined, namely a maximum of 8%. Keywords: Alternative Energy, Rubber Seed Shell, Coconut Shell, Pressure

Konsep Losses Jaringan Untuk Menentukan Batas Kestabilan Tunak Generator pada Sistem IEEE 26 Bus Rusilawati Rusilawati; Abdul Ghofur
Buletin Profesi Insinyur Vol 5, No 1 (2022): Buletin Profesi Insinyur (Januari-Juni)
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/bpi.v5i1.132

Nilai batas pembangkitan maksimum generator yang tidak akan mengakibatkan ketidakstabilan pada sistem tenaga listrik disebut batas kestabilan steady state atau batas kestabilan tunak generator. Apabila generator dibebani melebihi batas kestabilan tunak, maka dapat menyebabkan ketidakstabilan dan gangguan pada sistem tenaga listrik. Batas kestabilan tunak unit generator pada sistem dengan banyak mesin (sistem multimachine) yang terinterkoneksi dapat dianalisis dengan cara mereduksi sistem multimachine menjadi sistem Single Machine to Infinite Bus (SMIB). Sistem SMIB adalah sistem dengan kumpulan semua beban pada satu pusat beban pada bus tak berhingga. Dalam artikel ini diberikan metode untuk mengubah sistem multimachine menjadi sistem SMIB dengan beban ekivalen dan impedansi ekivalen (req dan xeq) menggunakan konsep losses jaringan. Konsep losses jaringan digunakan karena nilai req dan xeq dapat ditentukan apabila losses jaringan diketahui. Setelah req dan xeq dihitung, nilai batas kestabilan tunak semua unit generator dapat ditentukan menggunakan konsep batas kestabilan tunak generator. Simulasi untuk menentukan batas kestabilan tunak unit generator menggunakan MATLAB dilakukan pada sistem IEEE 26 bus yang mempunyai 6 generator. Dari hasil simulasi dapat diketahui bahwa batas pembangkitan maksimum yang terdapat pada pelat nama generator tidak dapat dicapai oleh generator, karena pembangkitan generator dibatasai oleh batas kestabilan tunak.Kata kunci: kestabilan tunak, SMIB, konsep losses jaringan

ANALISA RELIABILITAS DENGAN METODE DMAIC PADA UNIT EXCAVATOR ZAXIS 450LC-3 DI PT X Muhammad Ainur Rahman; Abdul Ghofur; Akhmad Syarief
Scientific Journal of Mechanical Engineering Kinematika Vol 3 No 2 (2018): SJME Kinematika Desember 2018
Publisher : Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat

Excavator Zaxis 450LC-3 is a heavy equipment used in mining activities. The company that owns the equipment as a powerful engine will be able to carry out the operation or production to the maximum. The cause of disruption Excavator damage that often occurs is the interference with the components on multiple systems. For example undercarriage systems, electric / starting, fuel, lubrication, cooling, air intake / exhaust and so on. Thus it is necessary to study the Analysis of the Reliability Methods DMAIC In Unit Excavator Zaxis 450LC-3 at PT X, so that the operation can continue and to determine the reliability value / reliability of excavator zaxis 450LC-3. The analysis can find out the factors that influence decreasing the reliability of the unit excavator zaxis 450LC-3 with the DMAIC method and provide recommendations on the appropriate treatment plan unit zaxis 450LC-3 excavators. Following the analysis of the reliability of the DMAIC method, the reliability of the unit zaxis excavator EX1149, and EX1132 has low reliability. Resulting in lower reliability on zaxis 450LC excavator unit is due to the high frequency of unplanned break down in the system: undercarriage, hydraulic system, cooling system, electric system, and fuel system. Based on the known potential failure, the hydraulic system and engine, then do a treatment plan include: Predictive maintenance, lubrication tasks, corrective maintenance, preventive maintenance and proactive maintenance

Co-Authors A Cahyo Legowo Agung Cahyo Legowo Agus Mirwan Akhmad Syarief Aqli Mursadin Azmi Rianur Doni Rahmat Wicakso Emmy Sri Mahreda EN Anugraini Dewi Gunawan Rudi Cahyono Gusti Rusmayadi Hesty Heryani Ibrahim Hasan Iryanti Fatyasari Nata, Iryanti Fatyasari Isworo, Hajar Joko Agus Pamuji Wibowo Kiky C. Sembiring Komang Aria Kresna Kepakisa M. Reynaldi Perdana Saputra Maria Dewi Astuti Muhammad Ainur Rahman Muhammad Zaki Nursiah Chairunnisa Rachmat Subagyo Randi Nasarudin Rodiansono Rodiansono Rudi Siswanto, Rudi Rusilawati Rusilawati Satriansyah Satriansyah Sigit Mujiarto Suyanto - Trisna Aditya Zain Lillahulhaq

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