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Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering)
Published by Universitas Lampung
ISSN : 2302 559X     EISSN : 2549 0818     DOI : -
Core Subject : Agriculture, Engineering,
Agriculture, Biological Sciences & Forestry Engineering
Jurnal Teknik Pertanian Lampung or Journal of Agricultural Engineering (JTEP-L) is a peer-reviewed open-access journal. The journal invites scientists and engineers throughout the world to exchange and disseminate theoretical and practice-oriented researches in the whole aspect of Agricultural Enginering including but not limited to Agricultural Mechanization, Irrigation, Soil and Water Engineering, Postharvest Technology, Renewable Energy, Farm Structure, and related fields. The first issue was published in October 2012 by Department of Agricultural Engineering, Faculty of Agriculture, University of Lampung. Jurnal Teknik Pertanian Lampung has ISSN number 2302 - 559X for print edition on October 10, 2012 then 2549 - 0818 for online edition on January 10, 2017. Jurnal Teknik Pertanian Lampung is issued periodically four times a year in March, June, September, and December. Jurnal Teknik Pertanian Lampung has been indexed by Google Scholar, Crossref, Directory Open Access Journals (DOAJ), and CABI. Since Volume 5 Issue 1 (2016) Jurnal Teknik Pertanian Lampung has been accredited as SINTA 3 by Directorate General of Higher Education (DIKTI). Starting Volume 10 Issue 3 (2021) the journal received accreditation SINTA 2.
Arjuna Subject : -
Articles 16 Documents
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Search results for , issue "Vol 10, No 2 (2021): Juni" : 16 Documents clear
PREDIKSI CEPAT KUALITAS AIR MENGGUNAKAN LPAS (LASER PHOTO-ACOUSTIC SPECTROSCOPY) DENGAN MENERAPKAN METODE KOREKSI CUTTING EDGE FILTERING Ichwana Ramli; Agus arip Munawar; Khairul Abdi Ruslana
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 10, No 2 (2021): Juni
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v10i2.220-227

Abstract

A tool that can predict water quality by capturing sound vibrations generated by collisions between water samples and light is LPAS (Laser Photo-Acoustic Spectroscopy). To process the data acquired by LPAS, spectrum correction is needed to eliminate data errors when making acquisitions on water samples. The correction method used in this research is the cutting edge filtering correction method. The regression model that can be used is the PLSR (Partial Least Square Regression) regression model. This research was conducted in the Instrumentation and Energy Laboratory, Agricultural Engineering Study Program, Faculty of Agriculture, Syiah Kuala University. Water sample analysis was carried out at the Laboratory of the Industrial Research and Standardization Center (BARISTAND) Banda Aceh. This study used 4 monitoring wells within the TPA (Final Disposal Site) and 4 samples were taken from community wells outside the scope of TPA Gampong Jawa, Banda Aceh City. The results of this study indicate the parameters (temperature, turbidity, Ph, TSS, DO, BOD and Nitrate) are predicted to be in the frequency range 4000 - 10,000 cm-1. Raw spectrum data for pH and Nitrate (NO3-) parameters produce better data than the spectrum data for cutting edge filtering correction methods while cutting edge filtering spectrum data for temperature, turbidity, TSS, DO and BOD-5 parameters are better than spectrum raw data. This study also shows that the cutting edge filtering correction method is able to cut boundaries and compress the spectrum so that it can provide data limits on the spectrum so that the PLSR method can be applied to predict water quality. Keywords: water quality; Laser Photo-Acoustic Spectroscopy, correction method, regression method
AUDIT ENERGI PROSES PENGOLAHAN TEH HITAM (CTC) DENGAN SISTEM PENGAMBILAN KEPUTUSAN METODE SPACE Muhammad Rizky Ramanda; Sarifah Nurjanah; Asri Widyasanti
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 10, No 2 (2021): Juni
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v10i2.183-192

Abstract

The favorite product of black tea is tea leaf that are ground using the crush, tear and curl (CTC) method. This process able to produce the dry tea which has high quality with a strong aroma and taste, and high levels of antioxidants. This study aimed to conduct an energy analysis on the processing of black tea CTC at PTP. Nusantara VIII Rancabali to find out the steps towards efficient use of energy, opportunities and conservation efforts. The research method used is descriptive analysis method. The present paper conducted the energy audit calculations which are based on the energy consumption in each tea processing activity from the time. The calculation of energy audit was conducted from preparation of raw materials until the packaging of tea product. The results of the energy audit on the CTC black tea processing showed that for each ton of tea leaves required the energy is about 3.930,66 MJ.ton-1The greatest energy use is drying process which is at 1.424,67 MJ.ton-1 or 36,24%. The results of the analysis space was at quadrant conservative aggressive. Aggressive conservative steps that can be taken in the black tea processing are to develop activities towards energy saving, such as changing fuel from ordinary wood to wood pellets and adding or modifying machine tools so that the installed capacity of each processs to fulfill the capacity input of leaf tea. Key words: CTC, energy analysis, energy saving, processing of tea
DAYA TAMPUNG SUNGAI REMBAGAN TERHADAP BEBAN PENCEMARAN MENGGUNAKAN METODE STREETER-PHELPS Sri Wahyuningsih; Elida Novita; Irfan Dwi Satya
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 10, No 2 (2021): Juni
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v10i2.209-219

Abstract

Rembagan River is the main tributary of the Bedadung River in Cangkring Village, Patrang District, Jember Region. Various community activities in the Rembagan River area such as bathing, washing, defecating and urinating as well as agricultural activities will produce domestic and agricultural waste. These wast can cause river water pollution, especially water quality degradation. then the research needs to be done an analysis of the capacity of the Rembagan River in receiving pollution costs. The purpose of this study is to find out how much the ability of the Rembagan River to accept the burden of pollutants using the Streeter-Phelps method. Streeter-Phelps modeling takes into account two phenomena, namely the process of measuring dissolved oxygen (deoxygenation) and the process of increasing dissolved oxygen (reaeration). The results obtained from these calculations are oxygen drop curves determined on the basis of oxygen deficit values. The average values of deoxygenation rate and reoxygenation rate were sequentially 1.58931 mg/L/day and 10.09982 mg/L/day. So that self-purification can run well which means the water quality of the Rembagan River was still relatively good. This can be seen in the DO model pattern that goes up in each segment. The actual DO of 5.6760 mg / L was greater than the DO standard of class III quality of 3 mg / L. It can be interpreted that the Rembagan River still has a remaining DO of 2.676 mg / L and was still able to accept pollution cost of 18.8 kg/day. Keywords:  pollution load, Rembagan River, river capacity
MATHEMATICAL MODEL OF PHYSICAL PROPERTIES CHANGE OF COCONUT SAP IN THE VACUUM EVAPORATOR Febryan Kusuma Wisnu; Sri Rahayoe; Rizza Wijaya; Mareli Telaumbanua; Agus Haryanto
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 10, No 2 (2021): Juni
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v10i2.252-262

Abstract

The potential of brown sugar as a substitute for granulated sugar is enormous considering the abundant coconut sap production. However, the quantity of brown sugar production through the traditional method is one of the main obstacles. This study used a vacuum evaporator that emphasizes the hygienic and effective mass production of brown sugar. For this reason, it is necessary to approach changes in the physical properties of sap juice during the cooking process. This knowledge is indispensable in the cooking process, which involves the proper evaporation and crystallization of brown sugar. This research is devoted to determining the viscosity, density, and dissolved solids expressed in Brix and proposes a mathematical model to predict the physical properties during the evaporation process of brown sugar as a function of the initial concentration the solution before proceeding to the crystallization process. Results confirm that the prediction model for Brix is Cθ=(Co–Ce)·exp(0.0067·t)+Ce, the model for viscosity µθ=µo·exp(0.011·t), and ρө=(0.44996·t)+ρ0 for the density prediction model. The resulted mathematical model can accurately predict the rate of change in coconut sap's physical properties, indicated by the high coefficient of determination (R2). Keywords : brix, brown sugar, density, vacuum evaporator, viscosity
UJI KINERJA DAN KELAYAKAN FINANSIAL PENGERING PATI SAGU TIPE PNEUMATIC CONVEYING RING DRYER Abadi Jading; Paulus Payung; Eduard Fransisco Tethool
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 10, No 2 (2021): Juni
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v10i2.228-238

Abstract

Sago starch drying in remote areas or difficult to reach transportation requires artificial dryers to increase the quantity and quality of the dry sago starch. The purpose of this study was to test performance, and analyze the economic value of biomass powered pneumatic conveying ring dryer (PCRD) for drying sago starch for small scale commercial. This research was conducted in two stages, namely performance testing and financial analysis. Small scale (mini) PCRD has been created for drying sago starch with a capacity of 160 kg of dry sago starch per day. The resulting moisture content varies according to variations in temperature and initial moisture content of sago starch and has met the Indonesia National Standard (SNI) No. 3729 regarding the maximum water content of sago starch (13%), except at temperature variations of 50oC and 75oC with an initial moisture content of 41% that did not meet the SNI, which was greater than 13% (14.27% and 13.23%). The drying efficiency varies between 7.339% to 9.689%. Likewise, the yield of dry sago starch that was produced varied between 65% and 73%. PCRD is very feasible to be developed into a commercial scale sago starch dryer with a Pay back value of 2.66 years to return the initial capital of Rp. 186,879,200. Keywords: drying, financial analysis, PCRD, sago starch
Cover Volume 10 Nomor 2 2021 Agus Haryanto
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 10, No 2 (2021): Juni
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v10i2.%p

Abstract

KAJIAN PENERAPAN PRODUKSI BERSIH DI AGROINDUSTRI KOPI WULAN, KECAMATAN MAESAN, KABUPATEN BONDOWOSO Elida Novita; Khotijah Khotijah; Dian Purbasari; Hendra Andiananta Pradana
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 10, No 2 (2021): Juni
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v10i2.263-273

Abstract

Wulan Coffee Agroindustry is one of agroindustries in region of Bondowoso that applies the semi-wet method and it has potential to be certified by Geographical Indications (IG). The wastes of arabica coffee processing at Wulan Coffee Agroindustry is directly thrown to the surrounding environment without being repaired first, because of that, it is worried that can affect human health and the environment. Therefore, further treatment is necessary to reduce the impact of waste pollutions and improve the efficiency of processing by using cleaner production technology. This study aimed to examine the priority alternative of cleaner production at Wulan Coffee Agroindustry. The method used in this study is descriptive quantitative with mass balance analysis, energy balance analysis, feasibility analysis, and priority analysis of cleaner production application using the method of AHP (Analytical Hierarchy Process). The waste management alternative in the Wulan Coffee Agroindustry were coffee pulp waste processing i.e. cascara tea, briquettes, and animal feed, also the waste water of coffee processing as biogas. The cleaner production applied in the Wulan Coffee Agroindustry had alternatives likes coffee green bean, coffee powder, and cascara tea. It was the priority scale to be applied because technically factor and financial factor consist of NPV, IRR, B/C ratio, and PBP were Rp 1.211.88.689; 49%; 6.27, and 0.76 or 9 month. Therefore, the result of AHP analysis using expert choice application showed that cascara tea was the priority alternative of cleaner production application with value of 15,4. Keyword: arabica coffee, assessment, Bondowoso, feasibility analysis, waste utilization
ANALISIS PERFORMANSI TURBIN PROPELLER OPEN FLUME TIPE TC 60 KAPASITAS 100 W TERHADAP PERUBAHAN DEBIT Wahyu K Sugandi; Dwi R Kendarto; Sophia Dwiratna; Arif Rahmanda
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 10, No 2 (2021): Juni
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v10i2.161-169

Abstract

The TC 60 open flume propeller turbine is an example of a pico-hydro-based fluid engine. The potential of the TC 60 open flume propeller turbine can be maximized by paying attention to the flow rate. This study aims to analyze the performance of the TC 60 open flume propeller turbine performance which is influenced by changes in discharge. The method used is descriptive analysis method. The turbine performance testing was carried out at the CV Cihanjuang Inti Teknik laboratory in Cimahi. Turbine testing begins by making 9 discharge ranges from 1.28 litre/sec until 4.85 litre/sec then testing each of these flows. Power testing is carried out using a lamp load of 10 to 100 watts. The results showed the effect of changes in discharge on the power generated by the turbine. The maximum power produced in this study is 74 watts at a discharge flow of 4.85 litre/sec with a load of 70 watts. The lowest discharge to be able to move the turbine is 1.28 litre/ sec. The results of the technical feasibility analysis on civil buildings in CV Cihanjuang Teknik show that the TC 60 open flume propeller turbine is feasible to use by considering the design of the discharge, head and channel shape of civil buildings. Keywords: discharge, picohydro, propeller turbine, performance
PENGEMBANGAN ALAT TANAM JAGUNG TIPE TUGAL DALAM UNTUK LAHAN KRITIS Makbul Hajad; Radi Radi; Bambang Purwantana
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 10, No 2 (2021): Juni
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v10i2.129-138

Abstract

Blora and Grobogan are regions with higher production capacity of corn commodity compared to other regions in Central Java province. However, low number of technical irrigation and el-nino phenomenon have become the main threat for the sustainability of corn farming in both regions. During dry session, the top soil of the land are solidified which lead to higher difficulty for planting the corn seed using traditional tool. An improved design of the traditional seeder is then required to solve this problem to enable farmers plant corn seed during dry session. The objective of this research was to develop seeder prototype with “Tugal Dalam” type in Blora and Grobogan regions where the land have been categorized as marginal land during dry session. The proposed design is based on technical, ergonomic, economical, and social aspect. The qualitative approach was used to obtain the technical, ergonomical, economical and social aspect required by the farmer. Kansei Engineering is used to translate and evaluate the proposed design through some tests conducted on several group of farmers where they were requested to use 4 seeder design options and write their preference on each design option based on the mentioned aspects. Tests confirmed that the proposed design can be used to plant a corn seed at farmers desired characteristics. Kansei engineering also confirmed that ‘high speed’, ‘easy to operate’, ‘low price’, ‘easy to handle’ and ‘has a watering system’ were preferred by the farmers and determined their decision on buying and using the seeder tool. Keywords: kansei engineering,  marginal land, seeder development, tugal dalam
MEMPELAJARI KARAKTERISTIK FISIK BIJI KAKAO (Theobrema cacao L.) PADA SUHU PENGERINGAN YANG BERBEDA Sri Waluyo; Tri Wahyu Saputra; Nikita Permatahati
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 10, No 2 (2021): Juni
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v10i2.200-208

Abstract

Drying is a common process step for agricultural grain products for ease of handling and to achieve the desired quality levels. One of the commodities that have high economic value produced by farmers in Lampung Province is cocoa beans. The drying process may change the physical properties of the cocoa beans and affect the processing of cocoa beans at a later stage. This study aims to determine the effect of drying temperature on changes in the physical properties of cocoa beans such as dimension, volume, weight, surface area, true density, bulk density, porosity, sphericity, and angle of repose. This research was applied to fresh non-fermented cocoa beans in testing. The cocoa beans were dried at temperatures of 40, 50 or 60oC. The research data were then statistically tested using paired sample T-Test at the 95% level to determine whether there is any effect of drying temperature on changes in its physical properties. The results showed a significant effect of drying temperature on weight, volume, geometric mean diameter (Dg), surface area, bulk density, porosity, and angle of repose of cocoa beans. Meanwhile, the sphericity and true density parameters did not significantly change. Keywords: cocoa beans, drying, physical properties

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