Detailed kinetic mechanism of devolatilization stage and CFD modeling of downdraft gasifiers using pelletized palm oil empty fruit bunches

2021 ◽  
Author(s):  
Nathada Ngamsidhiphongsa ◽  
Ahmed F. Ghoniem ◽  
Amornchai Arpornwichanop
Keyword(s):  
Palm Oil ◽  
Kinetic Mechanism ◽  
Cfd Modeling ◽  
Empty Fruit Bunches ◽  
Detailed Kinetic Mechanism

The Analysis of Potential of Straw Mushroom Development by Using Empty Fruit Bunches Material in Lampung Province

2019 ◽  
Vol 1 (2) ◽  
Author(s):  
Sarono Sarono
Keyword(s):  
Palm Oil ◽  
Efficiency Ratio ◽  
Crude Palm Oil ◽  
Production Scale ◽  
Empty Fruit Bunches ◽  
Straw Mushroom

The empty fruit bunches (EFB) are by-product of crude palm oil (CPO) production, and it is not widely used optimally. One of products produced from EFB with development potentials is straw mushroom. The objective of this research was to analyze the potentials of EFB material and straw mushroom based on EFB material in Lampung province. The result showed that the EFB potential in Lampung province was 111,144 ton annually and straw mushroom was 4,835 ton annually. The biology efficiency ratio of EFB into straw mushroom in production scale was averagely 3.93%. Districts having potentials for developing straw mushroom business by using EFB material were Mesuji, Middle Lampung, Tulang Bawang, Way Kanan, and North Lampung.

PERCEPATAN PENGOMPOSAN TANDAN KOSONG KELAPA SAWIT (TKKS) DENGAN PEMBERIAN UREA (Acceleration Composting Empty Fruit Bunches (Efb) With The Application Of Urea)

AgriPeat ◽  
2019 ◽  
Vol 18 (02) ◽  
pp. 113-124
Author(s):  
Journal Journal
Keyword(s):  
Weight Loss ◽  
Water Content ◽  
Palm Oil ◽  
Organic N ◽  
Empty Fruit Bunches ◽  
Randomized Design ◽  
Compost Application ◽  
Completely Randomized Design ◽  
Total P

                                                                                                                                   ABSTRAK Kelapa sawit merupakan tanaman perkebunan yang memegang peranan penting dalam industri pangan. Luas perkebunan kelapa sawit di Indonesia pada tahun 2014 mencapai 10 juta Ha. Pertumbuhan yang pesat diikuti dengan produksi crude palm oil (CPO) dan palm karnel oil (PKO) yang juga meningkat, sekaligus produk sampingan berupa limbah. Salah satu limbah pabrik kelapa sawit yang jumlahnya besar adalah tandan kosong kelapa sawit (TKKS). Tandan kosong kelapa sawit merupakan limbah organik yang berpotensi dimanfaatkan dibidang pertanian. Akan tetapi, TKKS memiliki nilai C/N yang cukup tinggi, akibatnya sukar dan lama untuk terdekomposisi. Salah satu cara pemanfaatan TKKS adalah dengan dilakukan pengomposan dengan pengkayaan urea. Diharapkan dengan perlakuan tersebut TKKS akan cepat terdekomposisi dan dapat segera dimanfaatkan oleh tanaman. Penelitian ini bertujuan untuk (1) mengetahui pengaruh pemberian urea terhadap pengomposan TKKS dan (2) mengetahui pengaruh peningkatan dosis urea terhadap kualitas kompos TKKS. Rancangan yang digunakan dalam penelitian ini adalah Rancangan Acak Lengkap (RAL) faktor tunggal dengan 5 perlakuan, yaitu U1 (urea 0 g setara dengan nilai C/N=), U2 (urea 30,9 g setara dengan nilai C/N=), U3 (urea 79,3 g setara dengan nilai C/N=), U4 (urea 176,1 g setara dengan nilai C/N=) dan U5 (urea 466,3 g setara dengan C/N = ) dan 9 ulangan, sehingga diperoleh 45 satuan percobaan. Hasil penelitian menunjukan bahwa pemberian urea berpengaruh sangat nyata terhadap susut bobot, kadar air, nilai pH kompos, C-organik, N-total, P-tersedia, dan nilai C/N, selain itu pemberian urea mengakibatkan terjadi perubahan tekstur dan warna pada kompos TKKS. Pemberian dosis urea 466,3 g mampu meningkatkan kandungan N-total, serta menurunkan nilai C/N dan nilai pH kompos. Pemberian dosis urea 79,3 g atau setara dengan C/N = mampu meningkatkan kandungan P-tersedia dan kadar air, menurunkan susut bobot dan kandungan C-organik, serta menunjukan perubahan tekstur dan warna yang lebih baik. Kata kunci: tanda kosongkelapa sawit (TKSS), kompos, urea                                                                                                                                        ABSTRACT Empty fruit bunches (EFB) is a solid wastes produced in large quantity from palm oil industry. Empty fruit bunches can be used as compost material, additionally difficult to decompose because it contain cellulose, hemicellulose, and lignin, as well as value of ratio C/N is high. Use EFB as compost material through the provision of urea has been done in this research. Urea are expected to reduce the value of ratio C/N and became a starter for microbial decomposers. The purpose of this research were (1) to determine the effect of urea on composting of EFB and (2) to determine the effect of increasing doses of urea to the quality of compost of EFB. This research was used a single factor of Completely Randomized Design (CRD) with 5 treatments, namely U1 (urea 0 g), U2 (urea 30,9 g), U3 (urea 79,3 g), U4 (urea 176,1 g), and U5 (urea 466,3 g), and 9 replications, until result 45 experimental units. The result showed that urea significant effect on weight loss, water content, value of pH compost, C-organic, N-total, P-available, and value of ratio C/N, besides urea resulted Widodoe, K. dkk Percepatan Pengomposan Tandan Kosong Kelapa Sawit…..…. 114 in a change in texture and color on the compost EFB. Application of urea 466,3 g was able to increase the content of N-total, reduce the value of ratio C/N and the value of pH compost. Application of urea 79,3 g can improve the content of P-available and water content, reduce the weight loss and the content of C-organic, and showed the changes in texture and color as better. Keywords: empty fruit bunches, compost, urea

scholarly journals AGRO-INDUSTRIAL WASTE SUSTAINABLE MANAGEMENT – A POTENTIAL SOURCE OF ECONOMIC BENEFITS TO PALM OIL MILLS IN MALAYSIA

2017 ◽  
pp. 108-118 ◽  
Author(s):  
Wai Loan Liew ◽  
Khalida Muda ◽  
Mohd. Azraai Kassim ◽  
Augustine Chioma Affam ◽  
Soh Kheang Loh
Keyword(s):  
Palm Oil ◽  
Sustainable Management ◽  
Industrial Waste ◽  
Oil Industry ◽  
Economic Benefits ◽  
Empty Fruit Bunches ◽  
Financial Benefits ◽  
Palm Oil Mill ◽  
Palm Oil Mill Sludge ◽  
Oil Fuel

Over the decades the palm oil industry has managed some challenging environmental concerns regarding land transformation and degradation, increase in eutrophication, changing habitats of wildlife, pesticides runoff into inland watercourses, and probable climate change. Countries producing palm oil desire to do so in a more sustainable way that will leave the environment evergreen. Therefore this paper aims to encourage sustainable management of agro-industrial waste and its potential in making financial returns from the same waste. Hence, the study was conducted with the participation of seven local palm oil mills having different capacities and operation age. Attention was given to milling waste as they could cause serious environmental menace if unattended to properly. Milling waste includes lignocellulosic palm biomass namely the empty fruit bunches (EFB), oil palm shell (OPS), mesocarp fibres, palm oil mill effluent (POME), and palm oil mill sludge (POMS), as well as solid waste generated from the further processing of these biomass into the palm oil fuel ashes (POFA) and palm oil clinkers (POC). The opportunities available to the Malaysian palm oil industry and the financial benefits which may accrue from waste generated during palm oil production process cannot be over emphasized.

scholarly journals Evaluation of mortar properties obtained through partial substitution of Portland cement by ashes of oil palm empty fruit bunch

Cerâmica ◽  
2019 ◽  
Vol 65 (375) ◽  
pp. 359-365
Author(s):  
V. A. Coelho ◽  
C. C. Guimarães ◽  
G. G. Doutto ◽  
P. P. Pedra
Keyword(s):  
Portland Cement ◽  
Palm Oil ◽  
Edible Oils ◽  
Absorption Capacity ◽  
Partial Substitution ◽  
Empty Fruit Bunch ◽  
Empty Fruit Bunches ◽  
Production And Consumption ◽  
Potential Use ◽  
Proportional Reduction

Abstract Currently, palm oil is a leader in production and consumption among commercial edible oils, with a growing world production that exceeds 66 million tons per year. It is estimated that the generation of residues from the burning of palm oil empty fruit bunches as fuel in the boilers corresponds to 5% in mass of the total of oil extracted. This work evaluated the mechanical properties resulting from the use of the empty fruit bunch ashes as a partial substitute of Portland cement in mortars in different contents in 1:3 and 1:6 mixes. Mortars obtained with the use of ash presented greater deformability, implying greater workability. The results obtained pointed to potential use of the ash as filler in mortars without loss on compressive strength for contents up to 10% in the 1:3 mix and 5% in the 1:6 mix. It was observed an increase in the void index and the water absorption capacity, with a proportional reduction of the flexural strength.

scholarly journals Properties and Characteristics of Compressed Biofuel Production from Empty Palm Fruit Bunches

2019 ◽  
Vol 120 ◽  
pp. 02001
Author(s):  
Tanuwat Larptansuphaphol ◽  
Penja Jitjumroonchokchai
Keyword(s):  
Palm Oil ◽  
Extraction Process ◽  
Biofuel Production ◽  
Black Rice ◽  
Palm Fruit ◽  
Mixture Ratio ◽  
Heating Value ◽  
Empty Fruit Bunches ◽  
Comparison Results ◽  
Composition Ratios

Thailand sits in the third place of the global rankings for crude palm oil production with an annual output of approximately 2 million tons/p.a., or 1.2% of the global output. Empty palm fruit bunches is one of residual from palm oil extraction process of Palm Oil industry. The objective of this research was to study properties and characteristics of biofuel made from empty fruit bunches and mixed with black rice hush with various composition ratios of empty palm fruit bunches and black rice husk as 100:0, 90:10, 80:20, 70:30, 60:40 and 50:50. Only the biofuels with a ratio of 100:0 and 90:10 could be formed to be compressed biofuels. The heating values of biofuels were analyzed by Gallenkamp Autobomb Calorimeter whereas other fuel properties and characteristics were tested and analyzed according to ASTM standards. The comparison results between biofuel from a mixture ratio 100:0 and 90:10 showed that the average of heating value, ash content, carbon content and combustion time (minute per one piece) were 4,672.46 and 4,199.33 cal/g, 21.73% and 29.30%, 12.07% and 16.28%, 92.33 and 63 minutes, respectively.

Prediction Model and Influence of Fe2O3 on the Mechanical Properties of Porcelain with POFA as Quartz Replacement

2020 ◽  
Vol 1010 ◽  
pp. 244-249
Author(s):  
Sani Garba Durumin Iya ◽  
Mohamad Zaky Noh ◽  
Norazreen Sharip ◽  
Siti Noraiza Ab Razak ◽  
A.R.M. Warikh ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Prediction Model ◽  
Palm Oil ◽  
Vickers Microhardness ◽  
Physical And Mechanical Properties ◽  
Palm Oil Fuel Ash ◽  
Empty Fruit Bunches ◽  
Fuel Ash ◽  
Predicted Values ◽  
Oil Fuel

Palm oil fuel ash (POFA) is solid waste from palm oil industries discarded after burning of shell, fiber, kernel and empty fruit bunches to heat boiler and generate electricity. A standard porcelain consisting of clay, feldspar and quartz is produced by sintering at temperature between 1300 °C to 1400 °C for toughness and translucency. This research developed a prediction model for optimum physical and mechanical properties of porcelain by addition of Fe2O3 at 5 wt.%. Quartz was replaced with POFA powder at 15 wt.% and Fe2O3 was also added at 5 wt.% of POFA mixed with others porcelain composition. Then the powder was dry pressed into pellet at 91 MPa and the samples were sintered at 1150 °C. The bulk density, compressive strength and Vickers microhardness were found to increase by addition of Fe2O3 at 5 wt.%. Prediction model was developed and from the predicted values it is revealed that, the model is efficient and good for the purpose of this research.

scholarly journals The challenge of the oil palm: Using degraded land for its cultivation

2019 ◽  
Vol 48 (3) ◽  
pp. 190-197 ◽  
Author(s):  
HJW Mutsaers
Keyword(s):  
Palm Oil ◽  
Oil Palm ◽  
Imperata Cylindrica ◽  
Productive Capacity ◽  
Degraded Land ◽  
African Countries ◽  
Vast Number ◽  
Perennial Plant ◽  
Forest Clearing ◽  
Empty Fruit Bunches

Palm oil is a valuable product used all over the world in a vast number of products for daily use. The oil palm, once well established, is very productive, captures large amounts of carbon and provides good protection to the soil. The use of residues as fuel makes oil extraction plants self-sufficient in energy and produces surplus electricity. A large part of the plant nutrients can be recycled by composting empty fruit bunches, with palm oil mill effluent and ashes added. Smallholders contribute close to 50% of the palm oil traded worldwide. The crop has acquired a bad reputation, however, because of the forests which have been and continue to be cleared for new plantations. The rate of forest clearing has been particularly high in Indonesia and Malaysia, with Thailand and some African countries following at a distance. Forests on peat soils are also increasingly used, releasing even larger amounts of CO2 from peat decomposition. In the ecologies where oil palm thrives, vast expanses of speargrass ( Imperata cylindrica) have resulted from logging and injudicious land use, including poorly managed plantations. Although speargrass is hard to get rid of, a sequence of annual and perennial plant species is capable to suppress the grass, opening a window for planting oil palm in the degraded land. A well-established oil palm crop will then keep the grass out, because of the latter’s intolerance for shade. Thus, the oil palm’s image in the eyes of the public as an ecological disaster can be converted into its opposite: that of a tool to restore the productive capacity of degraded lands. Vast numbers of smallholders can thereby safeguard their livelihood. The oil palm industry has the means and skills to make this happen.

Detailed kinetics of hydrogen abstraction from trans-decalin by OH radicals: the role of hindered internal rotation treatment

2020 ◽  
Vol 22 (44) ◽  
pp. 25740-25746
Author(s):  
Tam V.-T. Mai ◽  
Lam K. Huynh
Keyword(s):  
Master Equation ◽  
Hydrogen Abstraction ◽  
Kinetic Mechanism ◽  
Oh Radicals ◽  
Rate Model ◽  
Wide Range ◽  
Detailed Kinetics ◽  
Kinetics Of ◽  
Detailed Kinetic Mechanism

The detailed kinetic mechanism of the trans-decalin + OH reaction is firstly investigated for a wide range of conditions (T = 200–2000 K & P = 0.76–76000 Torr) using the M06-2X/aug-cc-pVTZ level and stochastic RRKM-based Master equation rate model.

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