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Andy Eka Saputra
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Kampus Politeknik Negeri Lampung Jalan Soekarn Hatta No. 10 Raja Basa Bandar Lampung
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INDONESIA
TEKTAN
Published by Politeknik Negeri Lampung
ISSN : 20851278     EISSN : 27453472     DOI : https://doi.org/10.25181/tektan
Core Subject : Agriculture, Social, Engineering,
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Engineering Environmental Science Mechanical Engineering
Jurnal Tektan merupakan salah satu jurnal di Politeknik Negeri Lampung yang  menampung hasil penelitian berupa artikel ilmiah yang berkaitan dengan Ilmu Keteknikan Pertanian, Mekanisasi Pertanian, Teknik Kimia, Teknik Sumberdaya Lahan dan Lingkungan,dimana artikel tersebut belum pernah dipublikasikan. Jurnal TekTan di terbitkan oleh Unit Penelitian dan Pengabdian Kepada Masyarakat Polinela Unit 3x dalam setahun. Jurnal Ilmiah Teknik Pertanian Ini diterbitkan oleh Unit Penelitian dan Pengabdian Kepada Masyarakat Polinela Sebagai Wadah Bagi Dosen, Mahasiswa dan PLP untuk mempublikasikan karya penulisannya. Jurnal ini sempat mengalami Jeda Pengaktifan Selama 3 tahun mulai terbitan 2016 sampai Agustus 2019, hal ini disebabkan karena kekosongan tim pengelola Jurnal. Kemudian dengan manajemen pengelolaan yang baru maka diterbitkan kembali untuk volume 11 No. 3 pada tanggal 16 Desember 2019
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 6 Documents
 1 
Search results for , issue "Vol 11 No 3 (2019)" : 6 Documents clear
Deteksi Akuifer Air Tanah Menggunakan Metode Geolistrik (Studi Kasus di Politeknik Negeri Lampung) Didik Kuswadi
Jurnal Ilmiah Teknik Pertanian - TekTan Vol 11 No 3 (2019)
Publisher : Jurusan Teknologi Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/tektan.v11i3.1465

Abstract

In fact, the interpretation of groundwater potential is not as easy as it is predicted, even often quite difficult and requires elaborate equipment. This remembers the formation and movement of groundwater in nature, so that measurements cannot be carried out directly. Interpretation of groundwater potential will always include two main objectives, namely: (1) soils or rocks as a medium where groundwater is acquired, and (2) groundwater as a liquid that fills the cavity in the soil or rocks. Some ground level investigation methods that can be done, including: Geological method, Gravity method, Magnetic field method, seismic method, and Geoelectric method. From these methods, the Geoelectric method is a very widely used method and the result is quite good. These geoelectric estimates are intended to obtain an overview of the subsurface of the soil and the possibility of groundwater and minerals at a certain depth. These geoelectric estimates are based on the fact that different materials will have different types of prisoners when they are electrically flowing. Groundwater has a lower type of prisoner than mineral rocks. The objectives of the study are: (1) Identifying soil layer formations and precise drilling depth at points of observation, (2) creating a map of groundwater layer depth distribution (groundwater contour). The stages of this study, namely: (1) equipment preparation, (2) The conjectives of the type of prisoner geoelectric with Schlumberger configuration, (3) The collection of field data, (4) Analysis and interpretation of field  data. Based on the results of analysis and discussion, can be concluded several things, namely: (i) water carrying layer in location I (TG-01) is suspected to be found in the TUFA layer of Andesit with a depth of 25-61 meters and a layer of andesite Breksi with a depth of more than 61-100.0 meters, (ii) flow of water through intergrain space and cracks/gaps with the potential of small water/until moderate.
Modifikasi Labu Ekstraksi untuk Menghemat Penggunaan Pelarut Lemak dan Efisiensi Ekstraksi Subandi Subandi; Sukiyadi Sukiyadi
Jurnal Ilmiah Teknik Pertanian - TekTan Vol 11 No 3 (2019)
Publisher : Jurusan Teknologi Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/tektan.v11i3.1466

Abstract

Limitations costs of laboratory, project business student and research using equipment soxhlet is a problem that often arise and require solutions to overcome them, one way to overcome this problem is to save the use of material without reducing the quality of the results of lab activities and research implemented. Tool Extraction of fat (soxhlet fat extraction unit) is a set of tools to perform the extraction of the fat/oil in a wide variety of materials in the form of solids, the working principle of this device is to extract the fat/oil in the ingredients with a fat solvent that is non-polar, the process of extraction takes place at subsequent extraction flask extraction results flow and accommodated in the cup of fat. Volume 150 ml cup of fat. must be filled by a grease solvent, while the fat solvent prices more expensive, so the availability of fat solvent in a chemical warehouse is relatively limited so we need innovative ways to overcome these problems. Modification of extraction flask for save of fat solvent and efficiency of extraction is an effort to conserve fat solvent by adding material to the flask extraction as an oppressor of materials that are extracted while reducing the volume of the flask extraction, thus the suppression of material extracted then extraction is efficient and the volume of solvent needed to extract the fat/oil over 24.882 percent saving.Keywords: soxhlet, solvent-fat/oil, efficiency
Peningkatan Uji Kuat Tekan Paving Block Dengan Bahan Limbah Andy Eka Saputra
Jurnal Ilmiah Teknik Pertanian - TekTan Vol 11 No 3 (2019)
Publisher : Jurusan Teknologi Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/tektan.v11i3.1467

Abstract

The research will be carried out at the Soil and Water Engineering Laboratory and the Lampung State Polytechnic Agricultural Mechanization Laboratory for 6 months. In the results of each manufacture of Paving blocks for each sample, the compressive strength value is quite stable and continues to increase starting from day 1 to 28. Cement as a binding material succeeded in binding fly ash and bottom ash perfectly due to the fly ash and bottom ash content reaching optimum laboratory standard density with dry content weight of 1.47 gr/cm3 with the addition of 3000cc water at a ratio of 1: 4 making a determinant of the strength of the paving block by achieving average maximum strength of 192 kg/cm2 or K 190 and 214 kg / cm2 or K 200 at 28 days old, and included in the class B katogari SNI 03 -0691-1996, with these results showing a high increase in class D quality in research previously increased to quality B with SNI standards. Keywords: paving blocks, fly ash, bottom as.,
Rancang Bangun Prototipe Digester Biogas Untuk Menunjang Praktikum Mahasiswa Subarjo Subarjo
Jurnal Ilmiah Teknik Pertanian - TekTan Vol 11 No 3 (2019)
Publisher : Jurusan Teknologi Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/tektan.v11i3.1468

Abstract

Energy is an essential requirement to support the activities and productive enterprises to produce goods and services. Almost all human activity is highly dependent on energy. Fuel shortages arise because of the level of fuel demand is very high and is increasing every year. While oil revenues are limited and membutukan earth millions of years time for formation. Due to the scarcity of fuel, causing the need of alternative energy that are environmentally become one of the necessities that can not be negotiable. The development of biogas digester technology to utilize and increase the economic value of waste is one with the road use it as raw material for biogas production. It is very suitable if to develop tool called biogas digester biogas or biogas reactor. The observation of the test digester, biogas on days 3 to 7 is not formed, even until day 14. The digester should be maintained in a state abiotis (without direct contact with oxygen; temperatures of 20-30°C). Gas began formation at day 14, and the highest gas increase at day 18 to 21, while the rate of formation of methane gas (biogas) at 13. the image that is on day 18 of 8.8 scale/cm and then on day 21 and 30 begin to decrease formation gas. the presence of the added value derived from manure waste created biogas can be used for cooking or lighting instead of electric energy. Keywords: digester, biogas, fermetation, anaerobic
Solar Power Elektrokoagulasi dengan Sistem Aliran Menerus untuk Pengolahan Air Baku Iskandar Zulkarnain
Jurnal Ilmiah Teknik Pertanian - TekTan Vol 11 No 3 (2019)
Publisher : Jurusan Teknologi Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/tektan.v11i3.1469

Abstract

Electrocoagulation is the process of clumping and deposition of fine particles that dissolve in water without chemicals used. This process is the best alternative for removing turbidity in processing raw water because the treated water leaves no residue of sufat and chloride. Several studies have been conducted related to the use of the best electrodes, distance and number of electrodes and contact time. The objective of this research to design a solar power electrocoagulation device with a continuous system to be applied in the raw water treatment process on a laboratory scale by observing turbidity, TSS and pH. Keywords: electrocoagulation, raw water, turbidity.
Simulasi Kejadian Banjir Sungai Way Kandis Ruas Polinela Untuk Beberapa Kala Ulang Kelik Istanto
Jurnal Ilmiah Teknik Pertanian - TekTan Vol 11 No 3 (2019)
Publisher : Jurusan Teknologi Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/tektan.v11i3.1470

Abstract

The effort to control water’s destructive power, in this case is flooding due to overflowing Kandis river, needs to be done to minimize the negative impacts. The main data in flood control infrastructure planning is discharge. The discharge calculation and simulation are required in some return periods. The objectives of research are delineate of catchment area, land cover of catchment area mapping, calculate of maksimum areal rainfall, calculate of flood discharge, and flood simulation of Kandis river in Polinela section base on flood. Kandis river catchment area of the Polinela section was 402.5 hectares and known that type of land cover consists of 15% open land, 20% vegetated land, 50% settlement, and 15% commercial area.The results shown that return period discharge in 2, 5, 10, 20, 25, 50, and 100 year are 9,89 m3/s, 11,81 m3/s, 13,07 m3/s, 14,29 m3/s, 14,68 m3/s, 15,86 m3/s, and 17,04 m3/s. By assuming there will be 1,5 % growth of settlements and commercial areas in catchment area land use as constantly number, 10 years forward, the return period discharge in 2, 5, 10, 20, 25, 50, and 100 year are 10,34 m3/s, 12,33 m3/s, 13,66 m3/s, 14,93 m3/s, 15,33 m3/s, 16,57 m3/s, and 17,80 m3/s. While by assuming there will be 3 % growth of settlements and 1 % growth of commercial areas in catchment area land use as constantly number, 10 years forward, the return period discharge in 2, 5, 10, 20, 25, 50, and 100 year are 10,58 m3/s, 12,63 m3/s, 13,99 m3/s, 15,29 m3/s, 15,70 m3/s, 16,97 m3/s, and 18,23 m3/s. Keywords :river, flood, discharge, flood simulation.

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