scholarly journals KAJIAN KINERJA SIKLON PEMBERSIH DAN PENGARUHNYA TERHADAP KONSENTRASI GAS-GAS HASIL GASIFIKASI TANDAN KOSONG KELAPA SAWIT

2020 ◽  
Vol 21 (3) ◽  
pp. 211-218
Keyword(s):  
Pressure Drop ◽  
Oil Palm ◽  
Collection Efficiency ◽  
Operating Conditions ◽  
Empty Fruit Bunch ◽  
Gas Temperature ◽  
Empty Fruit Bunches ◽  
Purification System ◽  
Standard Pressure

ABSTRAK PPembersihan partikel-partikel pengotor dari gas-gas hasil gasifikasi tandan kosong kelapa sawit merupakan salah satu proses penting yang harus dilakukan untuk mendapatkan gas pembawa energi dengan kemurnian yang lebih baik. Pemisahan partikel-partikel tersebut dari umumnya dilakukan dengan menggunakan siklon. Konstruksi dan kondisi operasi siklon, seperti suhu gas yang masuk, berperan penting dalam menentukan kinerja pemisahan partikel dari gas tersebut. Penelitian ini bertujuan untuk mengkaji pengaruh perubahan suhu gas terhadap kinerja siklon dalam memisahkan partikulat dan tar dari gas-gas hasil gasifikasi tandan kosong kelapa sawit. Hasil kajian menunjukkan bahwa peningkatan suhu gas yang masuk ke siklon mampu memisahkan partikel berukuran 5–6 μm di kisaran suhu 200–300 °C pada efisiensi minimum 50%. Hasil perhitungan efisiensi pengumpulan rata-rata mencapai 98,23%, sedangkan hasil pengukuran adalah 85,56%. Hasil perhitungan dan ekperimen terhadap tekanan jatuh pada siklon, masing-masing, adalah 100,11 dan 87 mmH2 O, berada pada kisaran standar tekanan jatuh yang disarankan. Efisiensi dan tekanan jatuh yang diperoleh menunjukkan bahwa siklon dapat bekerja dengan baik. Hasil kajian menunjukkan bahwa siklon sebaiknya digunakan pada tahap awal dari proses pemisah partikel dari gas hasil gasifikasi, pada saat suhu gas masih tinggi Kata kunci : Efisiensi Pengumpulan; Pengurangan Diameter; Penurunan Tekanan; Suhu Gas; Tar ABSTRACT Gas purification is one of a very crucial process required to be performed in order to obtain a better quality of gasses produced by grasification of oil palm empty fruit bunches. A cyclone is usually used in the purification process to separate particles and tarss from the gas. Particle separating performance of a cyclone is affected by its construction and operating conditions, such as temperature of the entering gas. The objectives of this study is to examine the effect of the entering gas temperature to the cyclone performance in separating particulates and tar from gases produced by gasification of oil palm empty fruit bunch. The results shows that the cyclone was capable in separating particles with size of 5-6 μm at entering gas temperature range of 200- 300 °C, at a minimum efficiency of 50%. The calculated average collection efficiency was 98.23% while the experimental results were 84.56%. Calculation and experimental data on pressure drop within the cylone was 100.11 and 97.0 mmH2 O, respectively, and fall within the required standard pressure drop. The collection efficiency and pressure drop indicated that the cyclone performed well. The study also suggests that cyclone is best to be used at the first row of the purification system for gases produced by gasification of empty fruit bunch since the temperature is still high enough Keywords : Collection Efficiency; Diameter Cut Size; Pressures Drop; Temperature of Gas; Tar

Collection Efficiency and Pressure Drop of Needle Punched Filters

1976 ◽  
Vol 98 (2) ◽  
pp. 675-680 ◽  
Author(s):  
E. M. Afify ◽  
M. H. Mohamed
Keyword(s):  
Pressure Drop ◽  
Unit Area ◽  
Collection Efficiency ◽  
Pressure Rise ◽  
Woven Fabrics ◽  
Dimensionless Form ◽  
Time Duration ◽  
Time Rate ◽  
Concentration Time

Although needle punched fabrics have been used in filtration with increasing success, only meager information is available on their performance characteristics in relation to their unique structure. In this paper an experimental investigation on the performance of needle punched filters is presented. A testing apparatus designed and constructed for this study is described. The pressure drop characteristics of needle punched filters were investigated. The effects of flow rate, packing density, and needling intensity were studied. Experiments were also performed to determine the collection efficiency of needle punched filters using flyash. The effect of flyash concentration, time duration of test, and needling intensity were considered. The role played by the structure in utilizing the mechanisms of collection and reducing the time rate of pressure rise during filtration is discussed. A new scale for measuring the quality of performance of filters using dust and relating, in a dimensionless form, the dust penetration, the pressure drop, and the filter weight per unit area was also developed. Comparison between the performance of commercial woven and needle punched filters demonstrated the superiority of needle punched fabrics over woven fabrics in filtration.

scholarly journals A preliminary study of the low density particle boards quality using rice husks and oil palm empty fruit bunch with plastic waste adhesive

2018 ◽  
Vol 195 ◽  
pp. 01022 ◽  
Author(s):  
Muh. Yamin ◽  
Rudito ◽  
Andi Lisnawati ◽  
Mohammad Lutfi
Keyword(s):  
Oil Palm ◽  
Building Materials ◽  
Plastic Waste ◽  
Modulus Of Rupture ◽  
Low Density ◽  
Empty Fruit Bunch ◽  
Rice Husks ◽  
Preliminary Study ◽  
Better Than

The accumulation of rice husks (RH), oil palm empty fruit bunch (OPEFB), and plastic waste (PW) can reduce the fertility of the soil. The objective of this study was to compare the quality of the low density particle boards using that waste. Experimental design was used by testing the quality of particle boards with a substitution of 50 % by weight of the total mixes for each waste (RH and OPEFB) and 50% of PW with 3 replications. The results revealed that the quality of the low density particle boards based on water content, density, and modulus of rupture (MOR) tests meet the requirements of SNI 03-2105-2006, whereas the modulus of elasticity (MOE), thickness swelling, water absorption, and the tension perpendicular to surface tests do not comply to the requirements. This preliminary study revealed that the quality of particle boards using OPEFB was better than the particle boards using RH for building materials such as ceilings.

scholarly journals DAMPAK SISTEM OLAH TANAH DAN MULSA TANDAN KOSONG KELAPA SAWIT TERHADAP PERTUMBUHAN, HASIL JAGUNG MANIS (Zea mays saccharata) DAN TATA AIR TANAH

2019 ◽  
Vol 21 (2) ◽  
pp. 68-74
Author(s):  
Andreas Junico Marulitua Situmorang ◽  
Bandi Hermawan ◽  
Hesti Pujiwati
Keyword(s):  
Zea Mays ◽  
Land Management ◽  
Oil Palm ◽  
Sweet Corn ◽  
Infiltration Rate ◽  
Growth And Yield ◽  
Empty Fruit Bunch ◽  
Empty Fruit Bunches ◽  
Tillage System ◽  
Corn Plants

[IMPACT OF THE TILLAGE SYSTEM AND OIL PALM EMPTY FRUIT BUNCH MULCH ON GROWTH, YIELD OF SWEET CORN (Zea mays saccharata) AND GROUNDWATER SYSTEM].  This study aims to determine the impact of land management and the use of oil palm empty fruit bunches (TKKS) mulch. This research was conducted from August to October 2018, arranged in a split plot design with two factors. As a first factor, land management consists of unprocessed, plowed, and plowed and harrowed. The treatment of oil palm empty fruit bunches mulch as the second factor consisted of no mulch, 9 tonnes/ha of mulch, 12 tonnes/ha of mulch, and 15 tonnes/ha of mulch. Plant variables observed consisted of plant height, stem diameter, number of leaves, fresh plant weight, plant dry, ear weight, ear length, ear diameter. Soil variables observed were the redistribution of groundwater and infiltration. The results showed no significant interaction between the tillage system and the application of oil palm empty fruit bunch mulch on all observed variables. Treatment without tillage or mulch dose of 12 tons/ha can provide growth and yield of sweet corn plants better than other treatments. The highest water content and infiltration rate were obtained from the dosage of oil palm empty bunches mulch 15 tons/ha. Soil cultivation by plowing and harrowing produces the highest infiltration rate compared to lower tillage intensities. About 18% to 42% of the diversity of growth and yield of sweet corn plants have a significant relationship with the diversity of groundwater.

scholarly journals Pemanfaatan Limbah Cair Pabrik Kelapa Sawit Sebagai Bioaktivator Untuk Pengomposan Tandan Kosong Kelapa Sawit

2019 ◽  
Vol 8 (1) ◽  
pp. 7
Author(s):  
Zainudin Zainudin ◽  
Abdul Rofik
Keyword(s):  
Chemical Analysis ◽  
Palm Oil ◽  
Oil Palm ◽  
Organic Fertilizer ◽  
Liquid Waste ◽  
Chemical Properties ◽  
Empty Fruit Bunch ◽  
Organic C ◽  
Empty Fruit Bunches ◽  
A Value

Palm oil is an export commodity of the plantation sector which began to develop rapidly in East Kalimantan with an area until 2017 reaching 1,192,342 Ha consisting of 284,523 Ha as plasma / smallholder plants, 14,402 Ha owned by SOEs as the core and 893,417 Ha owned by Large Private Plantation.Empty bunches (Tankos) are solid waste that is produced by palm oil mills in the process of managing palm fruit bunches into crude palm oil (CPO). In each processing 1 ton of fruit bunches will produce Tankos as much as 21-23%. Oil palm empty fruit bunches that are not managed properly will become waste that does not provide benefits. Compost technology using a local microorganism starter (MOL) can be used to produce quality organic fertilizer considering the process involves decomposing bacteria of organic ingredients. Compost technology from tankos waste is very possible to be developed, both at the level of farmers and private oil palm companies. This study aim to determine the potential of palm oil mill effluent (POME) as an bioactivator for composting oil palm empty fruit bunches, and to determine the chemical quality of oil palm empty fruit bunch compost with MOL bioactivator liquid waste as organic fertilizer. Through this research, it is expected that the palm oil mill's liquid waste can be utilized as a bioactivator for compost production and can be applied to the production of oil palm empty fruit bunch compost.This research was conducted for one year. The stages of the research are as follows: 1. Chemical analysis of POME waste, 2. Making LM POME, 3. Chemical analysis of LM POME, and 4. Making EFB Compost, and Chemical Analysis of oil palm empty fruit bunch compost. Compost making using randomized block design (RBD) with 5 treatments and 4 replications include: P0 = 0 ml / liter of water, P1 = 100 ml / liter of water, P2 = 300 ml / liter of water, P3 = 600 ml / liter of water, P4 = 900 ml / liter of water.The analysis showed that there was an increase in the chemical properties of POME after becoming an LM POME activator. Increased chemical properties such as phosphorus from 0.01 to 0.02, potassium from 0.19 to 0.27, and organic carbon from 0.90 to 1.30, but some chemical properties such as pH decreased from 7.20 to 3, 37 and nitrogen decreased from 0.37 to 0.05. The EFB compost analysis results showed that the highest pH was p2 with a value of 8.23, the highest organic C at p4 treatment with a value of 57.65, the highest total N at p3 with a value of 1.80, P2O5 the highest total at p3 with a value of 0.64, and the highest total K2O at p4 with a value of 2.68. 

scholarly journals Determination of Tensile Properties for Twisted Fibre Bundles of Oil Palm Empty Fruit Bunch at Different Diameters

2021 ◽  
Vol 34 ◽  
pp. 149-156
Author(s):  
Nik N. Nasri ◽  
Nazmi M. Nawi ◽  
Azhari S. Baharuddin ◽  
Saripa M. Lazim
Keyword(s):  
Tensile Strength ◽  
Tensile Properties ◽  
Oil Palm ◽  
Fibre Bundle ◽  
Tensile Modulus ◽  
Tensile Load ◽  
Natural Fibre ◽  
Empty Fruit Bunch ◽  
Empty Fruit Bunches ◽  
Different Diameters

The potential use of natural fibre extracted from oil palm empty fruit bunches has gained wide attention among researchers. This natural fibre comes from fibrous strands which form fibre bundle after shredding process at a mill. The measurement of tensile properties is important to understand the mechanical performance of this fibre bundle. This study was undertaken to determine the tensile properties of the fibre bundle from oil palm empty fruit bunch (OPEFB). Fibrous strands of the OPEFB extracted from shredded empty fruit bunches were twisted to form fibre bundle specimens at different diameters varying from 1 to 5 mm. The tensile properties measured in this study including tensile strength, tensile load and tensile modulus. The measurements were performed using Instron Universal Test Machine (IUTM) model 5000. From the results, it was found that the specimens at 1 and 5 mm in diameter required 71.25 and 429.68 N of the tensile load to break, respectively. The specimen with 1 mm in diameter recorded the highest tensile strength of 90.72 MPa while the specimen with 5 mm in diameter recorded only 21.88 MPa. The highest tensile modulus with value of 662.50 MPa was obtained from the specimen with 1 mm in diameter while the specimen with 5 mm in diameter had the tensile modulus value of 157.47 MPa. It was also found that the tensile strength and tensile modulus decreased when the diameter of the specimens increased. The findings reported in this study can serve as an engineering basis for the design specification in the development of the future in-silo composting machine.

scholarly journals Case Studies of Air Filtration at Microscales: Micro- and Nanofiber Media

2008 ◽  
Vol 3 (2) ◽  
pp. 155892500800300 ◽  
Author(s):  
Benoît Mazé ◽  
Hooman V. Tafreshi ◽  
Behnam Pourdeyhimi
Keyword(s):  
Pressure Drop ◽  
Fiber Diameter ◽  
Collection Efficiency ◽  
Particle Diameter ◽  
Molecular Flow ◽  
Air Filtration ◽  
Gas Temperature ◽  
Pressure Drops ◽  
Continuum Flow ◽  
The Media

In this work, 3–D fibrous geometries are developed to resemble the microstructure of spun-bonded and electrospun filters media and used here to simulate their filtration efficiency and pressure drop. For the sake of simplicity, a continuum flow theory was considered to prevail for the case of spun-bonded media (microfiber media) whereas our electrospun media (nanofiber media) were assumed to be in a free molecular flow regime. Our simulations results are in good general agreement with the experimental data. Especially, in predicting media's pressure drop, our results show better predictions when compared to some of the existing models. We also quantitatively demonstrated that by decreasing the fiber diameter, the minimum collection efficiency of the media having identical pressure drops increases. This effect is accompanied by a decrease in the particle diameter associated with these minimum efficiencies – the most penetrating particle diameter. Studying the influence of the gas temperature, we showed that filter's efficiency increases as the gas temperature increases. Conversely, the filter's pressure drop decreases by increasing the gas temperature.

scholarly journals The quality of compost made from mixture of Mucuna bracteata and oil palm empty fruit bunch

2021 ◽  
Vol 762 (1) ◽  
pp. 012082
Author(s):  
Sakiah ◽  
D A Saragih ◽  
A Sukariawan ◽  
Guntoro ◽  
A S Bakti
Keyword(s):  
Oil Palm ◽  
Empty Fruit Bunch

scholarly journals Adding Compost to Oil Palm Planting Holes can Increase the Diversity of Soil Fungi without Significantly Affecting the Gas Emissions on Wetlands

2019 ◽  
Vol 7 (1) ◽  
pp. 60
Author(s):  
Hasrul Satria Nur ◽  
Abdul Hadi ◽  
Rindang Yuliani
Keyword(s):  
Oil Palm ◽  
Soil Fungi ◽  
Negative Impact ◽  
Inorganic Fertilizer ◽  
Empty Fruit Bunch ◽  
Chemical Fertilizers ◽  
Inorganic Fertilizers ◽  
Gas Emissions ◽  
Empty Fruit Bunches ◽  
The One

<p>The use of chemical fertilizers have been negative impact on environment, especially in increased the gas emissions and reduced the diversity of microbes, such as bacteria, actinomycetes, and soil fungi.  As the one of the alternatively is used the combined compost.  For instance, grass compost with the added of inorganic fertilizer (chemical), oil palm empty fruit bunches compost with the added of inorganic fertilizer, and the inorganic fertilizer without compost.  The measuring of gas emissions was carried out on CH<sub>4</sub>, CO<sub>2</sub> and N<sub>2</sub>O at several of the oil palm planting holes.  Every sample gases were collected by the chambers installed with syringe. .Thus, the gas emissions were analyzed by chromatography gas type GHG 450 Shimadzu.  Besides that, the diversity of soil fungi were also determined by the characterization and identification.  The result of this research showed of reducting on CH<sub>4 </sub> that was appplied by the combined of oil palm empty fruit bunch compost with inorganic fertilizers i.e., 0.019 until-0.316 g CH<sub>4</sub>.m<sup>-2</sup>.h<sup>-1</sup>.  The same patterns were also demonstrated by CO<sub>2</sub> from the treament of oil palm empty fruit bunch with inorganic fertilizers, viz 755.246 untill-2.331 g CO<sub>2</sub>.m<sup>-2</sup>.h<sup>-1</sup>.  Relating to N<sub>2</sub>O, it has undergone reduced by grass compost with inorganic fertilizers, viz-27.726 until-25.622 mg N<sub>2</sub>O.m<sup>-2</sup>.h<sup>-1</sup> .  Meanwhile, the genera of soil fungi that were found on the sites after applying combining compost, viz <em>Aspergillus, Bipolaris, Gonatobotrys, Gonatorrhodiella, Oidiodendron, Penicillium, Rhynchosporium, Rhizopus, Trichoderma,</em> and <em>Trichocladium</em>.  Therefore, the use of compost with combining chemical fertilizers are potentially to apply into the oil palm field on wetlands.</p><p> </p>

Removal of Methylene Blue and Copper (II) by Oil Palm Empty Fruit Bunch Sorbents

2015 ◽  
Vol 74 (7) ◽  
Author(s):  
Nur Haziqah Mohd. Nasir ◽  
Muhammad Abbas Ahmad Zaini ◽  
Siti Hamidah Mohd. Setapar ◽  
Hashim Hassan
Keyword(s):  
Aqueous Solution ◽  
Methylene Blue ◽  
Hydrochloric Acid ◽  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Oil Palm ◽  
Blue Dye ◽  
Empty Fruit Bunch ◽  
Empty Fruit Bunches

This study aims to evaluate the adsorptive properties of oil palm empty fruit bunch for the removal of cationic pollutants in water. The untreated and hydrochloric acid-treated empty fruit bunches were characterized based on pH of adsorbent, specific surface area and surface functional groups. The adsorbents were then used to challenge varying concentrations of methylene blue dye and copper (II) in aqueous solution. Results show that the specific surface area of empty fruit bunch decreased upon the treatment with hydrochloric acid. The untreated adsorbent displays a higher equilibrium removal of the target pollutants due to its higher specific surface area of 28.4 m2/g. The maximum removal were recorded as 0.103 and 0.075 mmol/g for methylene blue and copper (II), respectively. Oil palm empty fruit bunch is a promising candidate for the removal of cationic pollutants in aqueous solution. 

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