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Jurnal Serambi Engineering
Published by Universitas Serambi Mekkah Aceh
ISSN : 25283561     EISSN : 25411934     DOI : https://doi.org/10.32672/jse
Core Subject : Science, Social, Engineering,
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Engineering Environmental Science
Jurnal Serambi Engineering diterbitkan oleh Fakultas Teknik Universitas Serambi Mekkah Banda Aceh. Jurnal ini diterbitkan sebagai media untuk menyalurkan informasi hasil penelitian dibidang keteknikan baik yang dilakukan oleh para dosen dari Fakultas Teknik, khususnya dari Universitas Serambi Mekkah maupun dari pihak lain. Penelitian yang dipublikasikan dapat berupa penelitian lapangan maupun laboratorium serta kajian literatur.
Arjuna Subject : -
Articles 1,178 Documents
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Produksi Gas Hidrogen dari Air Laut Menggunakan Proses Photovoltaic-Electrolysis dengan Katalis H2SO4 Lukman Hakim; Elma Agustina Berutu; Ratna Sari; Ratni Dewi
Jurnal Serambi Engineering Vol 8, No 1 (2023): Januari 2023
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v8i1.5575

Abstract

AbstractHydrogen is a new and renewable energy that has advantages over other energies. Among the hydrogen gas production methods that have the potential to be developed is seawater electrolysis, which is an abundant source. The electrolysis method uses a Direct Current (DC) electric current source. In this study, DC electric current was used from the results of solar panels (photovoltaic) with a volume of seawater as an electrolyte solution of 3500 ml. The electrolysis process times were 15, 30, 45, and 60 minutes using graphite electrodes with variations in voltages of 5, 10, 15 and 20 volts and H2SO4 catalyst concentrations of 0.1M, 0.25M, 0.5M and 0.75M at ambient conditions and 1 atm. The study results showed that the voltage and catalyst concentration of H2SO4 showed the effect of the formation of hydrogen gas. Where the effect of the loading voltage is reversed with the catalyst concentration of H2SO4. The higher voltage, the flow rate of the hydrogen gas produced also increases and the higher the concentration of H2SO4 catalyst used, lower the flow rate of the hydrogen gas produced. Based on the research results, the highest hydrogen gas flow rate was obtained at a catalyst concentration of 0.1M H2SO4, at a voltage of 20 volts with a flow time of 60 minutes, a flow rate of 20.5 ml/minute and in seawater electrolysis using H2SO4 catalyst did not produce NaOCl as a byproduct.Keywords: electrolysis, energy, graphite, hydrogen, catalyst
Analisis Keselamatan dan Kesehatan Kerja dengan Metode Job Safety Analysis pada Proyek Bendungan Kuwil Kawangkoan Mukhamad Afif Salim; Agus Bambang Siswanto; Tigo Mindiastiwi; Purwantini Purwantini
Jurnal Serambi Engineering Vol 8, No 1 (2023): Januari 2023
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v8i1.5330

Abstract

The Kuwil Kawangkoan Dam Development Project is one of the National Strategic Projects (PSN). The Kuwil Kawangkoan Dam is a dam located in North Sulawesi province, in the district/city of North Minahasa. This dam is planned to have a capacity of 23.37M³ and is expected to reduce flood discharge by 282 M³/second, provide raw water supply of 4.50 M³/second, and generate electricity of 1.20 MW. With the large-scale development of the Kuwil Kawangkoan Dam Development Project and the high level of risk of work accidents in this development, it is necessary to have an analysis of occupational health and safety (K3). The type of research used is descriptive observational research to identify hazards and analyze the risk of work accidents Hazard identification uses Job Safety Analysis (JSA) technique, which is a method of safety analysis by identifying hazards in a job and controlling work accidents that occur while working. The results of this research are the selection of 6 jobs which previously detailed the stages of the work first and then analyzed the identification of the level of risk so that the results obtained in the Kuwil kawangkoan Dam Development Project there are 3 levels of risk categories, namely extreme risk, high risk and moderate risk. For extreme risk levels, there are 5 jobs with a total of 18 potential hazards. High and moderate risk levels are found in 6 jobs with a total of 84 potential hazards for high risk levels and 29 potential hazards for medium risk levels. As for risk control, it is categorized into 3 aspects, namely the worker aspect, the work environment aspect and the equipment and material aspects of the project
Analisis Perhitungan Overall Equipment Effectiveness pada Mesin Die Cut di PT. Empat Perdana Carton Dhani Ilham Abdilah; Agustian Suseno
Jurnal Serambi Engineering Vol 8, No 1 (2023): Januari 2023
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v8i1.5354

Abstract

AbstractCompanies must be able to compete with their rivals in the Industrial 4.0 age by boosting productivity. In manufacturing, machinery is typically only used for about 50% of its real capacity. One of the production equipment of PT. Empat Perdana Carton whose performance will be assessed is the die-cut machine. The Overall Equipment Effectiveness method is used to calculate the availability, performance, and quality values combined to generate the average value for measuring the performance of die-cut machines. According to the study's findings, the average availability ratio was 88.89%, the performance rate was 73.90%, the quality rate was 99.73%, and the OEE value was 65.63%. The lack of attention paid to repairs, the difficulty in locating machine parts, the lack of SOP application when using the machine, the unrealized work system, and the poor cleaning of scrap are the causes of the low OEE score.Keywords: overall equipment effectiveness, die cut machine, fishbone diagram, total productive maintenance
Kinerja Pengomposan Lubang Resapan Biopori Ditinjau dari Lokasi, Musim dan Penambahan Bahan Aditif Yenni Ruslinda; Suci Mahdianti; Resti Ayu Lestari; Hendra Gunawan
Jurnal Serambi Engineering Vol 8, No 1 (2023): Januari 2023
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v8i1.5581

Abstract

AbstractBiopore Infiltration Hole (BIH) Composting is influenced by the compost raw material's type, composition, and size, the addition of additives and activators, soil texture, land use, and weather conditions. Composting performance can be improved if these factors can be optimized. This study aims to analyze the performance of BIH composting in terms of location, season, and additives. Composting is done by varying the location/season, type, and weight of additives. For locations/seasons, composting is carried out in protected areas representing the dry season and open areas representing the rainy season. Variations of additives consist of no additives, 100% sawdust, 100% rice husks, and a mixture of sawdust and rice husks with variations in the weight of additives of 1.5% and 3% of the weight of the compost raw material. The analysis was carried out on the maturity test, the quality of physical and macro elements, and the quantity of compost. The results showed that all variations of composting had met the quality standards of domestic organic waste compost according to SNI 19-7030-2004 to test the maturity and quality of compost. The addition of additives can speed up the composting time by 2-6 days and increase 7.15-35.71% the quantity of solid compost. Composting with the addition of 100% rice husk additives at 1.5% of the weight of the compost raw material and carried out in protected locations (dry season) is the most optimal BIH composting.Keywords: additives, composting, Biopori Infiltration Holes (BIH), location, season
Pengaruh Bioaktivator dan Lama Fermentasi Terhadap pH dan Kadar Nitrogen dari Kompos Kulit Ari Biji Coklat Ruka Yulia; Mahfudhlazi Al ‘Amani; Irmayanti Irmayanti; Juliani Juliani
Jurnal Serambi Engineering Vol 8, No 1 (2023): Januari 2023
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v8i1.5605

Abstract

AbstractThe epidermis of cocoa beans is one of the agricultural wastes that has not been utilized optimally. Composting from cocoa bean husks is a way of processing plantation waste that has economic value. The purpose of this study was to determine the effect of EM4 and PROMI bioactivators and fermentation time on pH and nitrogen content of cocoa husk compost. The research method used is descriptive method with 2 treatments and 3 repetitions. The treatment used was a type of bioactivator namely EM4 and promi and the duration of fermentation was 5, 10 and 15 days. The results showed that the best pH was obtained by adding EM4 bioactivator with 5 days of fermentation, namely 6.75. While the highest nitrogen content was obtained by adding EM4 with a fermentation time of 15 days, namely 1.84% for the two bioactivators.Keywords: bark, cocoa beans, compost, em4, promi
Implementasi Metode Double Moving Average dan Regresi Linier untuk Peramalan Asam Sulfat di PT.XYZ Debi Yulian; Ade Momon
Jurnal Serambi Engineering Vol 8, No 1 (2023): Januari 2023
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v8i1.5586

Abstract

AbstractPT. XYZ is an excellent stockist and supplier of commodities for many enterprises that need chemicals. The way that companies can survive and businesses can rotate also increases, requiring appropriate policies to increase productivity and optimize in managing the company starting from the incoming activities, processes and results achieved. Forecasting is an important thing to do when it will produce an item or product. In this study, we used past data on sulfuric acid product demand from February 2021 to January 2022. The purpose of this study is to estimate the amount of demand in the coming period in order to meet consumer demand. Double moving averages and linear regression were used as methods in this study, followed by determining the lowest MSE and MAPE values used to forecast sulfuric acid demand at PT. XYZ. The lowest MSE and MAPE values were generated using linear regression methods with MSE values of 2.724 and MAPE of 2.173 for PT. A. At PT. B obtained MSE 2.397 and MAPE 1.324. The value is lower than MSE and MAPE double moving average. For this calculation, the linear regression method can be used as a forecasting method in this calculation.Keywords: forecasting, double moving average, time series, linear regression, mean absolute percentage error
Kajian Pengaruh Kadar dan Ukuran Kapur dalam Netralisasi Potensi Keasaman Tailing dari Kegiatan Pertambangan Emas Plucheria Pritta Aquila; Candra Nugraha
Jurnal Serambi Engineering Vol 8, No 1 (2023): Januari 2023
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v8i1.5576

Abstract

AbstractMineral mining activities will leave waste rock known as tailings, which has small particle sizes and can trigger an oxidation reaction of the sulfide minerals contained therein and produce AMD. Laboratory tests have been carried out to determine the effect of the additional lime in terms of rate and particle size to neutralize the acid water formed through qualitative and quantitative mineral testing and static geochemical testing for various combinations of lime rates and sizes. This study used lime with a CaO content of 90.9% and tailings with a sulfur content of 4.88%. Subsequently, the pasta pH-EC, ABA, and NAG tests were conducted on a mixture of lime and tailings with lime sizes ranging from 8-16 to 50-100 mesh and a lime: tailings ratio of 2.5 to 15 kg/ton tailings. The test results show lime with a size of 50–100 mesh with a lime: tailings composition of 15 kg/ton tailings provides the most optimal effect in neutralizing potential acidity from tailings indicated by a pH value of 7.18. This study is expected to provide input in the management of tailings in mining to avoid acidic water which has the potential to dissolve metal content in tailings that have a negative impact.Keywords: AMD, lime content, grain size, Ph, tailing
Penurunan Konsentrasi Pb dengan Metode Fitoremediasi Menggunakan Tumbuhan Jeringau (Acorus calamus) Suhar Suhar; Eka Marya Mistar; Ida Hasmita; Nurul Aflah; Ika Rezvani Aprita
Jurnal Serambi Engineering Vol 8, No 1 (2023): Januari 2023
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v8i1.5607

Abstract

Industrial activities have led to the aquatic environment degradation. One of the pollutants is lead (Pb) which has a dangerous toxic effect, cannot be decomposed and is mutagenic. High levels of Pb in waters can result in the death of aquatic biota and pose a threat to human health. This study examined the ability of the Jeringau plant (Acorus calamus) to absorb Pb. The Jeringau plant is taken from the river bank, with a length of 20 cm, has many leaves and roots. Artificial Pb waste was made with various concentrations of 0.5 mg/L, 1 mg/L and 2 mg/L. Furthermore, the Jeringau plant was put into a reactor containing Pb waste and observed for 9 days. The obtained results showed that Pb concentration decreased at the ninth day of 0.03 mg/L, 0.067 mg/L and 0.201 mg/L.
Pemanfaatan Kulit Jagung sebagai Adsorben dalam Penyisihan Detergen dari Air Limbah Laundry Shinta Indah; Denny Helard; Windy Dhiya Lathifah
Jurnal Serambi Engineering Vol 8, No 1 (2023): Januari 2023
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v8i1.5356

Abstract

Tujuan dari penelitian ini adalah memanfaatkan kulit jagung sebagai adsorben dalam menyisihkan detergen dari air limbah laundry. Percobaan adsorpsi dilakukan secara batch menggunakan larutan artifisial detergen untuk mendapatkan kondisi optimum waktu kontak, pH dan konsentrasi adsorbat serta dosis dan diameter adsorben. Konsentrasi detergen sebagai Methylene Blue Active Surfactans (MBAS) dianalisis menggunakan spektrofotometer UV-Vis pada panjang gelombang 652 nm. Hasil penelitian menunjukan kondisi optimum untuk penyisihan detergen dari larutan artifisial adalah waktu kontak 30 menit, pH adsorbat 3, konsentrasi adsorbat 40 mg/L, dosis adsorben 20 g/L dan diameter adsorben 0,245-0,3175 mm. Pada kondisi optimum diperoleh efisiensi penyisihan dan kapasitas adsorpsi sebesar 85,39% dan 1,708 mg/g. Data penelitian yang diperoleh lebih mengikuti persamaan isoterm Freundlich (R2= 0,9805) daripada isoterm Langmuir (R2= 0,7218). Hal ini mengindikasikan bahwa adsorpsi detergen terjadi pada beberapa lapis (multilayer) dari permukaan kulit jagung dan adsorpsi terjadi secara fisika. Secara keseluruhan hasil penelitian menunjukkan bahwa kulit jagung berpotensi untuk dijadikan adsorben dalam penyisihan detergen dari air limbah laundry.
Model Persamaan Kumulatif Muatan dan Tinggi Draft Tongkang Terhadap Kumulatif Cycle Time Batu Bara di Pelabuhan Karya Citra Nusantara Marunda Geby Thesya Paskarina; Hartati M Pakpahan
Jurnal Serambi Engineering Vol 8, No 1 (2023): Januari 2023
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v8i1.5582

Abstract

AbstractKarya Citra Nusantara Marunda Port is one of the ports that is a port business entity in Indonesia; this port can carry out bulk products unloading activities, including coal, sand, and others. The quantity of cargo in the barge increases as the draft of the barge falls, and vice versa; when the draft of the barge begins to rise, the amount of cargo drops gradually and the excavator's unloading time increases. Considering this, research must be done to ascertain the mathematical model relating to the duration of coal unloading at Marunda Port and to establish the cumulative impact of cargo volume and barge draft height. A multiple linear regression equation model was created for the time of coal unloading using the enter method, Y = -152.076 + 16.157X1 - 148.304X2, based on the findings of the analysis of traditional assumptions and hypotheses that was conducted as a prerequisite for creating a good equation model. The unloading cycle time will be 152,076 minutes shorter with the unloading time per barge when the amount of cargo per tonne drops. The needed unloading cycle time will be increased if the cargo volume rises by 16,157 tons.Keywords: port, unloading time, cycle time, total load, draft height, multiple linear regression

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