Analysis The Effect of Coconut Shell Charcoal Mixed Doses and Adhesive In Characteristics Jamu Dregs Briquettes

Briquette is an alternative simple fuel that has a relatively high calorific value, so it has the potential to reduce the use of firewood and fuel oil (BBM). Herbal waste is one of the biomass materials that came from the rest of the material in the production of herbal medicine made from medicinal plants. Utilization of herbal dregs as briquettes has been implemented by PT. Industri Jamu dan Farmasi Sido Muncul. Tbk, as fuel for boiler engines. Making briquettes from biomass requires the addition of materials, one of which is coconut shell charcoal and adhesives such as molasses and tapioca flour to improve the physical properties of the briquettes. Briquettes with good quality have a maximum moisture content and ash content of 8%, a heating value of more than 5000 cal/gram, a constant combustion temperature of 350℃ for a long period of time and is easily flammable. The purpose of this study was to determine the characteristics of briquettes based on the value of water content, ash content, combustion temperature, combustion rate, and calorific value. Variable treatment with the addition of coconut shell charcoal with several doses of 10%, 20%, and 30% and variations of adhesive materials. Data analysis was performed by using two-factor ANOVA statistical test. The results showed that briquettes with tapioca flour adhesive and 30% coconut shell charcoal composition had the best characteristics of briquettes compared to other variations

Peningkatan Kinerja Mesin Diesel dengan Produksi Biodiesel dari Kelapa (Coconut Nufera) dan Unjuk Kinerjanya Berbasis Transesterifikasi dengan Sistim Injeksi Langsung

Abstrak. Sampai sekarang, penggunaan biodiesel khususnya biodiesel dari kelapa di Indonesia belum menyentuh kepada penggunaan sebagai bahan bakar, baik untuk bahan bakar transportasi ataupun bahan bakar industri. Dari perkembangan yang ada terutama di luar negeri bahan bakar biodiesel sudah digunakan sebagai bahan bakar transportasi meskipun hanya dalam bentuk campuran. Ketersediaan bahan bakar minyak bumi semakin hari semakin terbatas. Selain karena alasan ketersediaan minyak bumi yang terbatas, pengembangan produk biodiesel dari minyak tumbuhan seperti minyak sawit, juga diarahkan pada sifat bahan bakunya yang dapat diperbaharui. Secara teknis hasil pengujian laboratorium terhadap unjuk kerja mesin diesel menghasilkan bahwa campuran biodiesel 30% dengan 70% solar mempunyai daya maksimum 5,36 HP pada 2.190 rpm lebih rendah bila dibandingkan dengan solar 100%, 5,41 HP pada 2.200 rpm. Sedangkan torsi maksimum campuran biodiesel 30% adalah 1,748 Nm lebih rendah dari solar 100% 1,761 Nm. Kandungan carbon monoxide campuran biodiesel dan hydro carbon campuran 30% biodiesel dengan 70% solar juga lebih rendah daripada solar 100%.Improved Performance of Diesel Engines With the Production of Biodiesel From Coconut (Coconut Nufera) and Performanced Based on Direct Injection System With TransesterificationAbstract. Use of biodiesel especially from CPO has not been popularly used either for transportation nor for industrial fuel, while in foreign countries, it has been used for transportation fuel even just be blended. As the available of fosil fuel ten to decrease, the use of a renewable fuel biodiesel will be promising. This study aimed to evaluate the performance of amall diesel engine using biodiesel as fuel source. Performance test of small diesel engine using biodiesel was conducted in the laboratory by using engine dynamometer. The results shown that mixing 30% of biodiesel and 70% fosil fuel (petro diesel) gave the best performance among other percentage mixture. Mixing 30% of biodiesel and 70% fosil fuel gave maximum power 5.36 HP at 2190 rpm and maximum torque 1.748 Nm. Its lower comparing than pure petro diesel that gave 5.41 HP at 2200 rpm and maximum torque 1.761 Nm. The gas emission was also evaluated simultaneously. The results shown that the mixing 30%: 70% produced low carbon monoxide (CO) and low hydrocarbon (HC) than petro diesel.

Rancang Bangun dan Uji Kinerja Mesin Pembersihan dan Pengayakan Tipe-Grizzly Untuk Beras

Abstrak. Penelitian ini bertujuan untuk mengembangkan mesin pembersih dan pengayak tipe grizzly untuk beras sekaligus menguji kinerja mesin. Penelitian terdiri atas perancangan, perakitan, dan evaluasi kinerja mesin. Mesin yang dikembangkan memiliki 6 (enam) komponen utama, yaitu sumber dan transmisi tenaga putar, lubang pemasukan, unit pembersih beras, unit pengayak beras, lubang pengeluaran, dan kerangka mesin. Penelitian dilakukan menggunakan 3 (tiga) percobaan putaran, L (lambat), S (sedang), dan C (cepat) untuk mendapatkan data dari parameter pengukuran seperti kapasitas kerja, kecepatan putar mesin, laju isapan udara pada unit pembersih, slip putaran puli, dan persentase kehilangan bahan. Pada percobaan putaran L-S-C, yaitu 1654, 1817, dan 1979 rpm, menghasilkan laju isapan udara adalah 7,04, 7,79, dan 8,50 m/s. Slip putaran puli terjadi pada pulli 4 dengan nilai 3,27% tanpa sampal dan 1,70% dengan sampel; puli ini bertugas untuk menggetarkan ayakan grizzly 10-mesh. Kapasitas kerja pada 3 percobaan putaran (L-S-C) berturut-turut adalah 78,5, 81,6 dan 146,7 kg/jam. Pemisahan optimal dedak terjadi para percobaan putaran C sendangkan pemisahan menir terjadi pada percobaan L. Persentase kehilangan bahan tertinggi terjadi selama terjadi penurunan kecepatan putar yang mengakibatkan penurunan efektivitas kerja mesin.Design and Performance Test of Cleaning and Gryzzly-Type Sieving Machine for Rice Abstract. This research aimed to develop and a rice cleaning and grizzly-type sieving machine which also evaluates its performance. It consisted of designing, assembling, and performance evaluating of the machine. The desired machine was developed in six main components, i.e., power source, hopper, rice cleaner, rice siever, outlets, and machine frame. The research used three rotational speed treatments (Slow-Middle-Fast or L-S-C rotations) for data collections, whereas the parameters of performance testing consisted of work capacity, engine rotation speed, airflow rate, pulley rotational slip, and grain loss percentage. Engine rotation speeds at L-S-C treatments are 1654, 1817, and 1979 rpm and resulted in 7.04, 7.79, and 8.50 m/s, respectively, for airflow rates produced by the suction from a blower. The most significant rotational slip is occurred at Pulley-4 resulted in 3.27% (operating without samples) and 1.70% (operating with samples); this pulley transmitted rotational power to vibrate the 10-mesh grizzly sieve. The work capacities at L-S-C rotational treatments were 78.5, 81.6, and 146.7 kg/h, respectively. The optimal separation of brans was at C-rotational treatment, while the optimal separation of groats was at L-rotational treatment. The high percentage of grain loss occurred along with a reduction in speed that made the machine work ineffectively

ANALISIS ASPEK ERGONOMI PADA LINGKUNGAN KERJA (STUDI KASUS PADA UNIT PRODUKSI COCO FIBER)

Temperature, noise and lighting are the most problems faced by industries, especially at the Coco fiber production company. The objectives of this research were to evaluate the working environment factors such as temperature, noise, and lighting. This research was conducted at the Coco fiber production company namely CV Tiga Sehati at Ledokombo, Jember. Questionnaire was addressed to the workers in the processing area of company to get comments related to the working area. Discussion with key person was also implemented in this research to reach data. Direct measurement of working area environment was conducted using several tools such as thermometer, luxmeter and sound level meter. The average of temperature, humidity, noise and lighting were achieved at the level of 29.5oC, 62.9%, 88.9 dB and310.26 lux, respectively. Almost all of these results were higher than standard level. Some of working area improvement were strongly needed to keep safe, health and convenient of the workers.Keywords: ergonomic, work environment, coco fibe

PRODUKSI COCO-BIOFUEL DAN APLIKASINYA PADA MESIN DIESEL DENGAN SISTEM INJEKSI LANGSUNG

This study is devoted to the performance and emission evaluation of automotive diesel engine as affected by coco biofuel utilization. The concentration of palm biodiesel used in the test was ranged from B0 (pure petro-diesel), B10, B20, B30, B50 and B100 (pure biodiesel). The engine performance was evaluated through torque, power, and specific fuelconsumption, while the emission was evaluated through carbon monoxide (CO), hydrocarbon (HC), particulate matter (PM), carbon dioxide (CO2), and NOx pollutants. The result shows that higher content of palm biodiesel can reduce the emission of CO, HC, PM, and CO2. It was found that the addition of biodiesel could increase the power and torque. Further more, NOx also decreased when the content of palm biodiesel increases, which is in contrast with those generally found in the previous non palm biodiesel studies.Keywords: palm oil biodiesel, petro-diesel, carbon monoxide, hydrocarbon, particulate, matter, O2,and NOx pollutant

Penentuan Daya Tampung Beban Pencemaran Sungai Bedadung Ruas Kaliwates Berdasarkan Keberadaan Agroindustri Tahu Menggunakan WASP

Sungai Bedadung ruas Kaliwates digunakan sebagai sumber air baku sehingga harus memenuhi baku mutu air kelas I. Penelitian ini bertujuan untuk menentukan daya tampung beban pencemaran Sungai Bedadung dari adanya keberadaan agroindustri tahu dengan menggunakan WASP. Parameter kualitas air yang digunakan berupa BOD dan TSS. Hasil nilai model kualitas air menggunakan WASP memenuhi baku mutu air sungai kelas I pada BOD namun pada TSS tidak memenuhi. Berdasarkan perhitungan daya tampung beban pencemaran, Sungai Bedadung ruas Kaliwates masih mampu menerima beban pencemar yang masuk karena memiliki nilai daya tampung beban pencemaran sebesar 545.86 kg/hari untuk BOD namun tidak mampu menerima beban pencemar yang masuk pada TSS karena nilai daya tampung beban pencemarannya sebesar -2270.01 kg/hari. Simulasi dengan menurunkan konsentrasi sumber pencemar sesuai dengan baku mutu mampu meningkatkan daya tampung beban pencemaran Sungai Bedadung menjadi 688.33 kg/hari untuk parameter BOD dan -1564.72 kg/hari untuk parameter TSS.The Bedadung River section of Kaliwates is used as a source of water intake for Perumdam Tirta Pendalungan as Municipal Water Works in Jember Regency, so it must comply with the criteria for class I water quality standards. This study aims to determine the capacity to accommodate the pollution load of the Bedadung River from the presence of tofu agroindustry using WASP. The water quality parameters used are Biochemicals Oxygen Demand (BOD) and Total Suspended Solid (TSS). The results of the value of the water quality model using WASP meet the class I water quality allocation on the BOD parameter but on the TSS parameter it does not meet. Based on the calculation of the pollution load carrying capacity, the Bedadung River Kaliwates section accept the pollutant load input because it has a pollution load capacity value of 545.86 kg/day for BOD, but it does not accept the pollutant load input of TSS values because the pollution load carrying capacity is - 2270.01 kg/day. The simulation by reducing the concentration of pollutant sources by the quality standards that increases the carrying capacity of the Bedadung River pollution load to 688.33 kg/day for the BOD parameter and -1564.72 kg/day for the TSS parameter

Investigation simulation based on bio-energy local area photosensitizer in increasing dye-sensitized solar cells (DSSC) performance

The photosensitizer is an important part of Dye-Sensitized Solar Cells (DSSC). Photosensitizers function like photosynthesis by absorbing sunlight and turning it into energy. Photosensitizers also contribute to the efficiency of improving DSSC performance. This research is a continuation of previous research to find a candidate for natural and environmentally friendly photosensitizer (bio-energy) based local area in Indonesia. The photosensitizer used in this simulation is Tagetes erecta, Nyctanthes arbor-tritis, Brassica rapa Sub. Sp pekinensis, Delonix regia, Lawsonia inermis, Callistemon citrinus, and Daucus Carota. The purpose of this simulation is finding several candidates for bio-energy local area photosensitizer that produce high efficiency by displaying J-V curves and P-V curves. The highest efficiency was produced by photosensitizer Tagetes erecta at 1.5% [Voc 0.6385 Volt, 0.00383 A / cm2 Jsc, FF 0.605 and Pmax 0.00148 Watt], while the lowest efficiency was produced by photosensitizer Callistemon citrinus at 1.1% [Voc 0.6162 Volt, Jsc 0.0032 A / cm2, FF 0.557 and Pmax 0,0011 Watts]. These simulation results perform that one of reason give influence at DSSC performance is the absorption coefficient value in each bio-energy local area photosensitizer. The absorption coefficient also determines how much efficiency is produced and how much the photosensitizer's ability to absorb sunlight

Energy balances, greenhouse gas emissions and economics of biochar production from palm oil empty fruit bunches

This paper presents results from a gate-to-gate analysis of the energy balance, greenhouse gas (GHG) emissions and economic efficiency of biochar production from palm oil empty fruit bunches (EFB). The analysis is based on data obtained from EFB combustion in a slow pyrolysis plant in Selangor, Malaysia. The outputs of the slow pyrolysis plant are biochar, syngas, bio-oil and water vapor. The net energy yield of the biochar produced in the Selangor plant is 11.47 MJ kg−1 EFB. The energy content of the biochar produced is higher than the energy required for producing the biochar, i.e. the energy balance of biochar production is positive. The combustion of EFB using diesel fuel has the largest energy demand of 2.31 MJ kg−1 EFB in the pyrolysis process. Comparatively smaller amounts of energy are required as electricity (0.39 MJ kg−1 EFB) and for transportation of biochar to the warehouse and the field (0.13 MJ kg−1 EFB). The net greenhouse gas emissions of the studied biochar production account for 0.046 kg CO2-equiv. kg−1 EFB yr−1 without considering fertilizer substitution effects and carbon accumulation from biochar in the soil. The studied biochar production is profitable where biochar can be sold for at least 533 US-$ t−1. Potential measures for improvement are discussed, including higher productivity of biochar production, reduced energy consumption and efficient use of the byproducts from the slow pyrolysis

Role of biogas and biochar palm oil residues for reduction of greenhouse gas emissions in the biodiesel production

Greenhouse gas (GHG) emissions which related to palm oil production are tend to increase due to the increasing of palm oil demand and the expansion process of oil palm production worldwide. The specific objective of the study was to assess the contribution of innovative biomass processes as effort to improve the energy balance and reduce the greenhouse gas emissions (GHG) associated with biodiesel made from palm oil. The GHG was calculated that GHG emission savings up to 63.14% in total. GHG emissions from biochar using empty fruit bunches (EFB) resulted to 2.95% from total GHG emissions, and biogas from palm oil mill effluent (POME) produced 74.22% of the total GHG emissions from palm oil based biodiesel production. Innovative technologies and processes for the treatment of by-products can contribute significantly for meeting the emission targets. Build upon the research, resulted to the recommendation to use biochar and capturing methane from POME. The research result was also concerned that emission savings are annulled in the case of land use change (LUC) and oil palm production on peatland. Based on this research resulted to recommended that the utilization of waste from oil palm cultivation on peatland which was disuse and the capturing of methane from POM

Energy Balance and Green House Gas Emisson on Smallholder Java Coffee Production at Slopes Ijen Raung Plateau of Indonesia

Coffee production has been a major source of income in Indonesia since the early twentieth century. This study aimed to estimate the energy balances and determine the environmental impact of Robusta and Arabica coffee production as well as identify the measures to increase the efficiency of Robusta and Arabica yield using the life cycle assessment (LCA) method. The potential adverse impacts of processing ground coffee manifest themselves in the forms of greenhouse gas (GHG) emissions, acidification, as well as water and environmental pollution due to solid and liquid waste disposal. The total GHG emissions for Arabica coffee processing is 1,804 t CO2-eq year-1 while for Robusta, it is 1,356 t CO2-eq year-1. The total acidification potential for Arabica coffee processing can be given by 8,013 kg NO2-eq year-1 and 10,663 kg SO2-eq year-1, while for Robusta coffee processing, the potential for acidification is represented by 60.97 kg NO2-eq year-1 and 79.58 kg SO2-eq year-1, and the potential GHG per unit weight of Arabica and Robusta ground coffee processing were 98.7 CO2-eq kg-1 and Robusta 119.6 CO2-eq kg-1, respectively. The potential measures to mitigate this include replacing gasoline with biofuel, utilising liquid waste with chemical processing, and solid wastes of coffee production, such as brickquetess and bio-pellets for renewable energy