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Application of Microwave-Assisted Extraction Method to Improve Yield and Qualityof White Pepper (Piper Nigrum L) Oleoresin. Annisa Purnamasari Damanik; Edy Hartulistiyoso; Rokhani Hasbullah
Jurnal Keteknikan Pertanian Vol. 10 No. 1 (2022): April 2022
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.010.1.21-28

Oleoresin extraction is generally carried out by conventional maceration method, which takes up to 7 hours. Microwave-assisted maceration extraction method has the potential to reduce extraction time and solvent consumption. This study aims to examine the effect of applying the microwave-assisted extraction method on the yield and quality of oleoresin. The material used in this study was white pepper. Microwave maceration extraction as the main treatment was carried out by dissolving 200 grams of white pepper powder (60 mesh) with 800 mL ethanol (1:4), at a power of 100 watts, a maximum temperature of 50 oC, with 4 extraction times (30 minutes, 60 minutes, 90 minutes, and 120 minutes). Extraction by conventional maceration (7 hours) was performed as a comparison. The results of this study indicate that the microwave maceration extraction method produces a higher yield than the conventional maceration method. The average yield of microwave maceration extraction for 30, 60, 90, and 120 minutes were 8.76 %, 8.32 %, 9.46 %, and 10.37 %, respectively, higher than conventional maceration (8.61 %). The quality of white pepper oleoresin extracted by microwave maceration is different from conventional maceration in terms of the type and amount of oleoresin components. It can be concluded that the microwave maceration extraction method is effective in increasing the yield and quality of white pepper oleoresin compared to conventional maceration.

PERFORMANCE ANALYSIS OF WORKING FLUIDS ON ORGANIC RANKIE CYCLE (ORC) MODEL WITH BIOMASS ENERGY AS A HEAT SOURCES Lilis Sucahyo; Muhamad Yulianto; Edy Hartulistiyoso; Irham Faza
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 8, No 3 (2019): September
Publisher : The University of Lampung

Organic Rankine Cycle (ORC) is an electricity power technology particularly suitable for medium-low temperature heat sources and/or for small available termal power. This paper presents the simulation and performance analysis of working fluids R-134a, R-414B, R-404A and R-407C on ORC with biomass energy as a heat source. Simulation of the ORC system using Cycle Tempo software. The property of working fluids is obtained by using Reference Fluid Properties (Refprop). The best result performance of ORC was shown by working fluid R-404A with thermal efficiency 7.54 % and electric power output ranges between 0.075 kW. This condition operated on turbine inlet temperature at 60 oC, difference turbine working temperature of 15 oC, condensing temperature 25 oC and water boiler mass flow rate 3 lpm.

Analisis Potensi dan Peluang Pengembangan Kakao Desa Sidomulyo, Kecamatan Lebakbarang, Kabupaten Pekalongan Adicha Rahmawati; Edy Hartulistiyoso
Jurnal Pusat Inovasi Masyarakat (PIM) Vol. 2 No. 3 (2020): Juni 2020
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat, Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (519.794 KB)

Cocoa production in Sidomulyo Village is reduced due to various factors including pest and disease attacks such as CPB and fruit rot, old plants, lack of maintenance and land use change with plants that are easier to maintain. The results of the SWOT analysis show that the potential and opportunities for increasing cocoa production in Sidomulyo Village are still very large. The production can be increased by doing intensification, that is improving the cultivation system, and also extensification, that is the expansion of the planting area. Intensification provides a great opportunity to increase productivity and crop production. The low production is due to the lack of farmer’s knowlegde about innovation in cultivatoon tech. The expansion of the area is still constrained by the polyculture system or intercropping between cocoa and other crops which are a source of secondary income. Through good application to innovation in cultivation and processing and the use of potential areas for expanding cocoa growing areas, it can be ensured that the productivity and production of cocoa in Sidomulyo Village can increase sharply. Increased cocoa production will increase farmer’s income and walfare, moreover it will also affect the regional economy. The purpose of this project is to analyze potential and development opportunity of cocoa in Sidomulyo village Lebakbarang district Pekalongan regency. Keywords: opportunity, potency of cocoa, productivity

Potential Utilization of Municipal Solid Waste in Landfill Mining TPST Bantargebang Bekasi to Become Refuse Derived Fuel (RDF) Feed Stock Teti Resmianty; Anas Miftah Fauzi; Edy Hartulistiyoso; Setyo Pertiwi
Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Vol 12 No 2 (2022): Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (JPSL)
Publisher : Graduate School Bogor Agricultural University (SPs IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jpsl.12.2.281-289

Bantargebang Integrated Waste Management Site (TPST) is a final waste processing site that accommodates waste from the DKI Jakarta Province. Most of the waste that enters the Bantargebang TPST is piled up at the dumping point in each zone, so this can lead to a new problem, namely the filling of all existing stockpile zones. One of the technologies that can be used to solve the problem of full landfill zones. One technology to overcome this problem is landfill mining. The results of the study related to landfill mining at the Bantargebang TPST were carried out to determine the potential for utilizing landfill mining waste to become RDF feed stock. Based on the study of the composition of landfill mining results carried out, the waste to be used as raw material for RDF is waste with a diameter > 50 mm and which has a high calorific value.

The Study of Paddy Dryer Using Basalt Stone As Heat Storage Media From Biomass Combustion M Ridwan Dwi Astanto; Leopold Oscar Nelwan; Edy Hartulistiyoso
Jurnal Keteknikan Pertanian Vol. 10 No. 3 (2022): Desember 2022
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.010.3.305-318

The objectives of this research were to study the characteristics of thermal storage basalt rock by using biomass combustion with respect to manual adjusted airflow, combustion rate and the gap distance between the storage base and the furnace base as well as to evaluate the performance of the heat storage system for paddy drying. The heat storage characteristics experiment was carried out in two stages, namely heat charging and discharging. The tests were carried out with two gap distances, namely 23 cm and 30 cm. In general, the closer distance (23 cm) gives better performance, where at the targeted outlet temperature of 40˚C, an average discharging time of 664 minutes and a discharging efficiency of 73.5% were obtained. At the targeted outlet temperature of 45˚C, an average discharging time of 452 minutes with an average discharging efficiency of 65.75% were obtained. Furthermore, the heat storage system was applied for paddy drying. The drying experiment was carried out twice, each using an average outlet air temperature of 45.5˚C and 41.4oC with an initial grain moisture content of 22.82 and 13.88 %w.b., respectively. Drying time of 360 minutes for the first experiment and 420 minutes for the second experiment with specific energy consumption of 5.45 MJ/kg evaporated water and 5.31 MJ/kg evaporated water, respectively were obtained. Even though it uses direct heating by using coconut shell combustion, this drying method did not affect the aroma of the rice produced.

Thermal Characteristics of Coconut Shells as Boiler Fuel Muhamad Yulianto; Edy Hartulistiyoso; Leopold Oscar Nelwan; Sri Endah Agustina; Chandra Gupta
International Journal of Renewable Energy Development Vol 12, No 2 (2023): March 2023
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.2023.48349

Agricultural waste products, such as wood, rice husk, corn waste, and coconut shells, are abundantly available and can potentially be used as an energy source, particularly for direct combustion in boilers. Because coconut production increases every year, it would be useful to find an alternative use for coconut shells, which are a type of coconut waste. As coconut shells can be used as fuel in boilers, the aim of this study was to evaluate the thermal characteristics of coconut shells in this regard. This study used experimental results to evaluate the performance of a boiler when coconut shells were used as solid fuel. The variations in feed rate were 5, 7.5, and 10 kg/h, and the water flow rates varied between 1 litre per minute (lpm), 2 lpm, and 3 lpm. Temperature data were collected every second via data acquisition , and the mass flow rate of the flue gas was collected every 5 min using a pitot tube equation. One of the parameters evaluated in determining the success of coconut shells as boiler fuel is the thermal efficiency of the boiler. The results showed that the maximum thermal efficiency reached approximately 62.04%, and the maximum flue gas temperature was approximately 500 ℃ for a biomass mass flow rate of 7.5 kg/h. The maximum water temperature of the boiler was 99 ℃, which was reached at a minimum water flow rate of 1 lpm. The results showed that coconut shells are suitable for use as boiler fuel.

Effect of Drying Temperature on Quality of Dried Red Ginger (Zingiber Officinale Var. Rubrum) Addiena Syahvina Nasution; Rokhani Hasbullah; Edy Hartulistiyoso
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 12, No 1 (2023): March 2023
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v12i1.107-117

Red ginger is a source of herbal medicines that contain phenolic compounds. The advantage of red ginger as an herbal medicine requires proper handling and treatment so that the phenolic compounds in red ginger are not damaged. Drying is the right method for obtaining red ginger extract. The aims of this study were to investigate the effect of temperature on the proximate composition of dried red ginger and to investigate the suitable temperature for drying red ginger. Red ginger drying was carried out at various temperatures (40, 50, and 60 °C). The simplicia of red ginger was then mashed and sieved. Measurement of the quality of the simplicia included yield, moisture content, ash content, fat content, protein content, crude fiber content, and carbohydrate content. Dried red ginger was observed that all parameters examined were affected by drying at various temperatures except for ash content. The result of drying temperature at 50 °C showed a better quality of dried red ginger based on yield (17,64%), moisture content (6,88%), protein content (1,80%), and crude fiber content (1,86%). Keywords: Drying, Proximate, Red ginger, Simplicia, Yield.

Thermal Characteristics of Coconut Shells as Boiler Fuel Muhamad Yulianto; Edy Hartulistiyoso; Leopold Oscar Nelwan; Sri Endah Agustina; Chandra Gupta
International Journal of Renewable Energy Development Vol 12, No 2 (2023): March 2023
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.2023.48349

Agricultural waste products, such as wood, rice husk, corn waste, and coconut shells, are abundantly available and can potentially be used as an energy source, particularly for direct combustion in boilers. Because coconut production increases every year, it would be useful to find an alternative use for coconut shells, which are a type of coconut waste. As coconut shells can be used as fuel in boilers, the aim of this study was to evaluate the thermal characteristics of coconut shells in this regard. This study used experimental results to evaluate the performance of a boiler when coconut shells were used as solid fuel. The variations in feed rate were 5, 7.5, and 10 kg/h, and the water flow rates varied between 1 litre per minute (lpm), 2 lpm, and 3 lpm. Temperature data were collected every second via data acquisition , and the mass flow rate of the flue gas was collected every 5 min using a pitot tube equation. One of the parameters evaluated in determining the success of coconut shells as boiler fuel is the thermal efficiency of the boiler. The results showed that the maximum thermal efficiency reached approximately 62.04%, and the maximum flue gas temperature was approximately 500 ℃ for a biomass mass flow rate of 7.5 kg/h. The maximum water temperature of the boiler was 99 ℃, which was reached at a minimum water flow rate of 1 lpm. The results showed that coconut shells are suitable for use as boiler fuel.

Studi Teoritis Karakteristik Termal Pembakaran Biomassa Tanaman Energi pada Berbagai Kondisi Udara dalam Tungku Adiabatik Mawardi, Haris; Hartulistiyoso, Edy; Yulianto, Muhamad
Jurnal Ilmiah Rekayasa Pertanian dan Biosistem Vol 12 No 2 (2024): Jurnal Ilmiah Rekayasa Pertanian dan Biosistem
Publisher : Fakultas Teknologi Pangan & Agroindustri (Fatepa) Universitas Mataram dan Perhimpunan Teknik Pertanian (PERTETA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jrpb.v12i2.659

Combustion is an energy conversion method involving the reaction of fuel and oxygen to generate heat. Coal remains predominant in Indonesia’s energy mix, contributing to over 50% of global CO2 emissions. Efforts to reduce these emissions include using renewable energy sources like biomass, with current potential in energy crop biomass such as gamal and sengon wood. However, the thermal characteristics of burning gamal and sengon wood have not been extensively studied. This paper discusses the theoretical thermal characteristics of gamal and sengon wood combustion through numerical simulation using a combustion equilibrium model in an adiabatic furnace under stoichiometric, excess air, and excess fuel conditions. Thermodynamic calculations will be validated against experimental data. The simulation results show that the thermal characteristics of gamal combustion are superior to those of sengon. Adjustments in air supply can impact combustion quality, where excess air is often necessary to mitigate environmental factors disrupting theoretical stoichiometric combustion. Optimal combustion conditions are achieved at equivalence ratios of 1.3 for gamal and sengon. Validation using Mean Absolute Percentage Error (MAPE) indicates low error values (8,55%) affirming the model’s ability to predict thermal characteristics accurately.

Simulation on the Breakthrough Curve During CO2 Adsorption from Biogas in a Fixed Bed Column Kindi, Hablinur al; Tambunan, Armansyah Halomoan; Hartulistiyoso, Edy; Salundik, Salundik; Sutoyo, Edi; Sutisna, Setya Permana
ASEAN Journal of Chemical Engineering Vol 23, No 3 (2023)
Publisher : Department of Chemical Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ajche.82470

Separation of CO2 gas from the biogas can be accomplished by adsorption process. An adsorbent has a maximum capacity, so the adsorbent will eventually be saturated at a certain time. Therefore, it is necessary to simulate the adsorption mass transfer to produce a breakthrough curve. The breakthrough curve from the simulation of adsorption mass transfer was validated with the experimental data. The research was conducted using variations in temperature and pressure. The mass transfer simulation was solved using the finite difference method. The adsorbent used in this research was 13X zeolite and the biogas was obtained from cow dung waste. Convergent curves can be obtained in numerical simulations as breakthrough curves. This research shows that adsorption should occur at low temperatures and high pressure. Column height and flow velocity also influence the breakthrough time. The comparison of the simulated breakthrough time with experimental data is not much different with R2 0.9969. The striking difference is in the adsorption zone with average relative error (ARE) values ranging from 9.57% to 20.49%. From the results of entropy, enthalpy, and Gibbs free energy calculations, the biogas adsorption research on the 13x zeolite column is an exothermic and spontaneous process

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