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Info-Teknik
Published by Universitas Lambung Mangkurat
ISSN : 08532508     EISSN : 24599964     DOI : http://dx.doi.org/10.20527
Core Subject : Engineering,
Engineering
Jurnal Info – Teknik menerbitkan artikel – artikel karya orisinil dan signifikan pada Bidang Rekayasa Teknik.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 425 Documents
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Penurunan Warna Dan Zat Organik Pada Pengolahan Air Gambut Menggunakan Membran Ultrafiltrasi Mahmud Mahmud
INFO-TEKNIK Vol 4, No 2 (2003): INFOTEKNIK VOL. 4 NO. 2 2003
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v4i2.537

Abstract

Penelitian tentang pengolahan air gambut secara konvensional telah dilakukan, diantaranya dengan pemanfaatan lempung gambut (halotrichite) sebagai bahan penurun warna dan zat organik serta penggunaan tawas dan kapur sebagai bahan koagulan. Sekarang ini teknologi membran telah banyak digunakan di negara-negara maju untuk pengolahan air minum dan air limbah. Penelitian ini bertujuan untuk menyelidiki kinerja membran ultrafiltrasi dengan sistem aliran dead-end dalam mengolah air gambut, terutama dalam hal penurunan warna dan zat organik. Membran ultrafiltrasi (UF) yang digunakan pada penelitian ini dibuat dari polimer sellulosa asetat 13%, aditif dimethylformamide 36% dan pelarut aseton 51%, pembuatannya dengan metode inversi fasa rendam endap. Air gambut yang diolah diambil dari daerah Landasan Ulin Kalimantan Selatan. Pengolahan air gambut tanpa pretreatmen pada tekanan 3 bar masih belum memenuhi syarat air minum, fluks yang diperoleh 22,84 L/m2.jam, rejeksi warna 87,58% dan rejeksi organik 85,78%. Kondisi optimal pengolahan air gambut dengan membran UF-prekoagulasi  diperoleh pada dosis PACl 70 mg/L, kapur 25 mg/L dan tekanan operasi 3 bar, nilai fluks yang diperoleh 29,21 L/m2.jam, rejeksi warna 96,29 % (13,43 PtCo),rejeksi organik 97,08 % (9,24 mg/L.KMnO4). Dosis koagulan yang lebih besar dari 70 mg/L hanya menghasilkan peningkatan fluks dan rejeksi yang kecil. Air gambut dengan pre-koagulasi PACl yang dipisah dan tidak dipisah presipitatnya menghasilkan nilai fluks dan rejeksi yang relatif sama.
The Basic Concepts of Modelling Railway Track Systems Using Conventional and Finite Element Methods Puguh Budi Prakoso
INFO-TEKNIK Vol 13, No 1 (2012): INFOTEKNIK VOL. 13 NO. 1 2012
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v13i1.1816

Abstract

- The classical concepts of railway track analysis, such Beam on Elastic Foundation (BOEF), Winkler’s theory or Zimmermann method are categorized as one-dimensional analysis of a railway structure and are simplification of a beam laid on a continuous support (soil’s subgrade or foundation). These methods are still very useful for analyzing a simple design and analysis of railway track systems. Unfortunately, for doing a complex analysis of a railway track, these methods have lack of capabilities, since they only take into account one-dimensional system and neglect the actual discrete support provided by crossed sleeper, ballast, sub ballast mat and subgrade.Nowadays, the use of computer software for doing Finite Element Method (FEM) or Finite Element Analysis (FEA) of a structure is very common for engineers. FEA consists of a huge amount of complex calculations; therefore, a manual calculation by hand is almost impossible to be done. Hence, the use of computer software will be very useful in this manner. The applications of FEM using software also widen in the field of railway infrastructure design and analysis. There are many advantages of using FEM method using computer. However, related to its complexities, one should understands the concepts and “knows-how” to solve the problems, to idealize the structure into FEM model in computer, and to choose the suitable elements and its behaviours, and also the correct method.Thispaper is presented to discuss the basic theories behind the conventional and advanced ways of modelling of railway track system, to show the basic concepts of modelling railway track systems using FEM, to present two- and three-dimensional FEM models of railway superstructures which are built using software ANSYS, and to demonstrate the way of doing the verification of the results using Zimmermann method. 
Penilaian Variabel Kepuasan Karyawan Menggunakan Metode Analisis Kepentingan dan Analisis Kuadran (Studi Kasus Karyawan PDAM Kota Kandangan) Sjaiful Bahri
INFO-TEKNIK Vol 5, No 2 (2004): INFOTEKNIK VOL. 5 NO. 2 2004
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v5i2.1665

Abstract

PDAM sebagai perusahaan daerah yang eksistensi dan fungsinya sangat penting bagi masyarakat dan Pemerintah Daerah, diharapkan untuk masa yang akan datang menjadi perusahaan yang dapat memberikan pelayanan yang terbaik bagi masyarakat sehingga harus mempunyai komitmen dalam meningkatkan dan mengembangkan serta memperbaiki sistem manajemen yang ada secara profesional, transparan dan secara berkesinambungan. Salah satu analisa yang diperlukan sebagai masukan bagi pihak manajemen adalah penelitian yang berkaitan dengan aspek kepuasan karyawan.Tujuan dari kegiatan ini adalah untuk mengetahui kondisi manajemen internal khususnya dari aspek karyawan yang terlihat dari jenis-jenis variabel yang harus dipertahankan atau yang harus diperbaiki demi meningkatkan kinerja pelayanan terhadap pelanggan. Penelitian dilakukan berdasarkan random sampling terhadap karyawan PDAM di Kota Kandangan dengan menggunakan pendekatan Analisis Kepentingan (Analysis Importance) dan Analisis Kuadran (Performance Matrix) untuk mendapatkan gambaran umum terhadap 33 variabel terpilih dari aspek manajemen.Berdasarkan hasil penelitian dapat diketahui variabel-variabel yang perlu dipertahankan pihak manajemen adalah kesempatan yang luas dari pihak manajemen untuk mengerjakan tugas-tugas karyawan (X1), suasana kerja yang nyaman dan aman (X2), akses ke supervisor/pimpinan (X5), komunikasi dengan supervisor/pimpinan (X6), pemahaman tentang arah dan tujuan tim/organisasi (X10), kualitas produk dan pelayanan (X13), keinginan pihak manajemen untuk berubah maju (X15), keselamatan kerja (X16), dan kepercayaan kepada pihak manajemen (X30). Variabel-variabel yang perlu diperhatikan untuk perbaikan dan ditingkatkan adalah kerjasama sesama karyawan (X9), masalah pembayaran gaji/ insentif (X23), keinginan karyawan untuk didengar pihak manajemen (X25), peluang untuk mengembangkan keahlian baru (X27), penempatan karyawan sesuai bidang keahlian mereka (X31), dilakukannya pelatihan-pelatihan/kursus-kursus (X32), dan kejelasan tentang penjenjangan dalam karir (X33).
Alternatif Penanganan Longsoran Oprit Jembatan Pihanin, Nagara HSS Markawie Markawie
INFO-TEKNIK 2016: Prosiding Semnas Teknik Sipil 2016
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v0i0.3126

Abstract

Dampak kelongsoran adalah terganggunya arus barang dan jasa, dan menimbulkan rasa tidak aman (khawatir) jika melewati jembatan tersebut.  Sehingga diperlukan penyelidikan tanah berupa uji lapangan dan uji laboratorium untuk melakukan analisis kelongsoran.
PEMANFAATAN TEKNOLOGI LIDAR DALAM ANALISIS GENANGAN BANJIR AKIBAT LUAPAN SUNGAI BERDASARKAN SIMULASI MODEL HIDRODINAMIK M. Baitullah Al Amin
INFO-TEKNIK Vol 16, No 1 (2015): INFOTEKNIK VOL. 16 NO. 1 2015
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v16i1.210

Abstract

Flood analysis requires accurate topographic data to obtain a good overview of flood inundation. At this time, LIDAR (Light Detection and Ranging) is the best technology of remote sensing for collecting elevation data from earth surface. This elevation data can be used to create relief of the earth’s surface in three-dimensional format which is often referred to as a digital elevation model (DEM).This paper dealt with the utilization of LIDAR technology in analysis of flood inundation due to overflowing river based on simulation of hydrodynamic model. The creation of DEM from elevation data was done by geographic information system technique using Global Mapper software. The river geometry model was established by using HEC-GeoRAS installed in ArcGIS which then water surface profiles of flood were simulated using HEC-RAS.The result of flood profiles simulation were imported into HEC-GeoRAS in order to obtain flood inundation map. The utilization of LIDAR technology is very helpful within  analysis of flood inundation, so that the availability and its access need to be improved. Key words: LIDAR, DEM, HEC-GeoRAS, HEC-RAS, Flood Simulation
Penentuan Suhu dan Waktu Optimum Metanolisis Minyak Curah dengan Katalisator NaOH Meilana Dharma Putra
INFO-TEKNIK Vol 8, No 1 (2007): INFOTEKNIK VOL. 8 NO. 1 2007
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v8i1.1722

Abstract

Crude oil derivate called diesel oil that included as unrenewable fuel mostly is used in industrial and transportation fields. Nowadays, the diesel oil’s demand is increasing. Therefore, alternative sources from renewable raw material such as bio oil for substituting diesel oil from crude oil are very urgent. From this research, we got optimum temperature and optimum time for production bio diesel from crude oil.This research was conducted by react metanolat solution with bio oil in stirred-vessel at atmospheric pressure and certain temperature until required time. The research shows that optimum condition for production bio diesel from crude oil at temperature 40oC and reaction time 80 minutes, with stirrer-velocity 350 rpm and catalyst concentration 1% oil-mass. For this condition, the conversion that we got is 64, 67 %.
PENGARUH PENAMBAHAN KOTORAN SAPI DAN ENCENG GONDOK (EICCHORNIA CRASSIPES) TERHADAP PRODUKSI BIOGAS DARI LIMBAH JEROAN IKAN Rosita Dwityaningsih; Nurlinda Ayu Triwuri
INFO-TEKNIK Vol 19, No 2 (2018): INFOTEKNIK VOL. 19 NO. 2 DESEMBER 2018
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jit.v19i2.149

Abstract

The purposed of this research to study effect of adding cow dung and waterhyacinth to improve biogas production from fish waste. The method of thisresearch used experimental method at batch anaerob reactor and absortion carbonatom used NaOH solution. The result of this research analysis used describtionmethod. The observed of parameter included accumulation of biogas productionand also parameter at slurry incuded temperature and pH. Qualitative parameter istest of flame of biogas. The conclusion value of pH from this research betweencontrol reactor, A1 reactor (fishwaste: cow dung: water hyacinth= 2:9:3), A2reactor (fishwaste: cow dung: water hyacinth= 1:4:2), A3 reactor (fishwaste: cowdung: water hyacinth= 1:3:3) is 5 to 10. Temperature range in 28 oC to 31oC. Theresult indicated the different composition of subtrat slurry from fishwaste, cowdung and water hyacinth in scale 2:9:3 (A1 reactor) produced biogas accumulationand metana the most than the others reactor.
PENGARUH AGEN GASIFIKASI BATUBARA TERHADAP PRODUK GAS YANG DIHASILKAN OLEH BATUBARA PERINGKAT RENDAH Agus Triantoro; Adip Mustofa; Riswan Riswan
INFO-TEKNIK Vol 14, No 2 (2013): INFOTEKNIK VOL. 14 NO. 2 2013
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v14i2.304

Abstract

The development of coal gasification has several disadvantages including high reaction temperature and big energy consumption, difficult purification of the gaseous products, and stringent requirements of the process equipment. It has also been pointed out to cause serious environmental pollution. In this study, the experiment was conducted by flowing nitrogen, oxygen, and , into the gasification equipment. The gasification reactor was heated to 600 oC, 700 oC and 800 oC, where dry coal had been initially fed into before the gasification process began. The flow rates of pyrolysis products were then measured and a sample was taken for further analysis by using a gas chromatograph. The analysis identified the products composition that was CO, CO2, H2, CH4, C2H4 and C2H6. The composition of synthesis gas was observed to depend on the gasification agent used. it can be summarized that there is a good correlation between gasification agent and coal used, with the quality and quantity of synthesis gas produced.
COMPARATIVE STUDY OF FLEXIBLE PAVEMENT DESIGNS FOR NEW ROAD IN GREAT BRITAIN AND INDONESIA Hanafi Basri
INFO-TEKNIK Vol 10, No 1 (2009): INFOTEKNIK VOL. 10 NO. 1 2009
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v10i1.1765

Abstract

The objective of this article is to compare the design methods for flexible pavements for new roads and overlays between two countries, Great Britain and Indonesia.Pavement design procedures provide a structure that can be accepted in a specific environmental condition and able to satisfy the anticipated traffic loading. There are many factors influencing the thickness design of pavement, such as pavement materials, traffic load and climatic conditions, there is no doubt that the method of pavement design in one country may differ to another.This article reviews the design methods of flexible pavement for new roads in both countries. Simple comparative examples are presented together with discussion and comparision of the design methods. The results are then summarised in the concluding section.
STUDI KASUS ANALISA KERUSAKAN ABUDMENT JEMBATAN SEI. BAHALANG KALIMANTAN TENGAH Gawit Hidayat
INFO-TEKNIK Vol 11, No 1 (2010): INFOTEKNIK VOL. 11 NO. 1 2010
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v11i1.1771

Abstract

Bahalang bridge is a truss bridge B Class across Bahalang river in Ampah (Central Kalimantan), was built as conneting road for transport coal. The bridge building has a problem. It’s like an abutment failure in eastern abutment of Bahalang bridge. This abutment rotate 30 degree, so, the back side of abutmen has decline about 2 metres and slipped from its place to the river about 1 metre.The purposes of this study are to analyze of soil layer behavior and to find out main cause of damage on the abutment. Writer used approach calculation analysis of collapse using Plaxis and Xstabl.There is two options of calculate. Option one high of  water level river are in place (29,5 metres). In Xstabl show SFmin= 0,764 and Plaxis show total displacements=  64,5 metres. In option two where is high of water level  river assumsed (27,4 meters). In Xsstabl show SFmin= 0,807 and Plaxis show total displacements= 4,15 metres. From several alternatives conditions wich was analyzed by Plaxis, the collapse is known happened  during the placement of the fill in the eastern approach. Fill comprised sand material that was being placed rapidly by direct dumping from trucks and spreading by excavator. The results are total displacement= 6,45 metres. Pile bending moment result over the bending moment allowable value. That is 57,81 kNm on front pile, and 63,90 kNm on back pile. Abudment damage can be concluded due to the displacement of excess, so it is potentially broken pile 

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