Fuel Oil Production Research Articles

The effect of temperature on the Emission Factor of air emissions from pyrolysis of used tyres

Used tyres pyrolysis is an efficient solid waste management strategy for used tyres and a growing method of fuel oil production. However, the impact of air emissions associated at different temperature on ambient air quality has not been determined. To solve this problem, a pyrolysis fixed bed reactor and a condensing unit for separating liquid from produced gas were designed and constructed. 0.20 kg of used tyres were pyrolysed in the reactor and air emissions from the reactor chamber was characterized for air pollutants using the E-instrument E8500. Using a combination of measured mass of pollutants, mass of tyre pyrolzed and time taken during pyrolysis, Emission Factors of the air pollutants were established from the study at 200 °C, 300 °C and 400 °C. The concentration measured between 200 °C - 400 °C were in the range of 15 -7497 mg/m3, 0 – 4680 mg/m3, 38.25 – 103, 277.76 mg/m3 and 2 – 293 mg/m3 for CO, NOx, HC and H2S respectively. The developed emission factors were in the range of 16.52 – 8370.04 g kg-1, 0 – 4470.26 g kg-1, 42.126 – 104,055.9 g kg-1 and 2.20 – 322.69 g kg-1. The designed and constructed pyrolysis reactor and condenser unit were effective for used tyre pyrolysis while the measured air pollutants concentration were higher for all pollutants except H2S using the Federal Ministry of Environment (FEPA, 1991) standard. Hence, it is necessary to carry out further studies on air pollution control from waste tyre pyrolysis at lower temperature.

Research Progress in Fuel Oil Production by Catalytic Pyrolysis Technologies of Waste Plastics

Improper disposal of waste plastic has caused serious ecological and environmental pollution problems. Transforming plastics into high value-added chemicals can not only achieve efficient recycling of waste plastics, but is also an effective way to control white pollution. The catalyst selectively breaks the C–C bond of polyolefin plastic under heat treatment and converts it into liquid fuel, thus realizing sustainable recycling of plastics and has a good development prospect. This review provides a detailed overview of the current development of catalytic pyrolysis, catalytic hydrolysis, solvent decomposition, and supercritical hydrothermal liquefaction for cracking plastics to make fuel oil. The reaction mechanism, influencing factors, and promoting effects of catalysts in various degradation technologies are analyzed and summarized, and the latest proposed tandem reaction for degrading plastics is briefly introduced. Finally, some optimization paths of waste plastic pyrolysis to fuel oil technology are proposed: synergies between mixed raw materials, in-depth exploration of catalysts, design and manufacture of reactors that match the pyrolysis technology. All these are important research directions for promoting the industrialization of plastic pyrolysis to fuel oil.

Optimization of Pyrolysis Process Parameters for Fuel Oil Production from the Thermal Recycling of Waste Polypropylene Grocery Bags Using the Box–Behnken Design

The impact of dumping plastic waste is realized in different ecosystems of the planet. Several methods have been adopted to dispose of these wastes for energy recovery. This study, for the first time, proposed the Box–Behnken design technique to optimize the pyrolysis process parameters for fuel oil production from waste polypropylene (PP) grocery bags using a semibatch-type pyrolytic reactor. The semibatch-type pyrolytic reactor was developed and employed to produce fuel oil from waste PP grocery bags. The effect of different process parameters on fuel oil production was comprehensively analyzed using the response surface methodology (RSM) with the conjunction of the Box–Behnken design (BBD). The BBD facilitates the prediction of the response variables with respect to changes in the input variables by developing a response model. The BBD was used to optimize the process parameters, such as the reaction temperature (400–550 °C), nitrogen flow rate (5–20 mL min−1), and substrate feed rate (0.25–1.5 kg h−1), and their effect on the responses were observed. The optimum response yields of the fuel oil (89.34 %), solid residue (2.74%), and gas yield (7.92%) were obtained with an optimized temperature (481 °C), a nitrogen flow rate (13 mL min−1), and a feed rate (0.61 kg h−1). The quadratic model obtained for the fuel oil response denotes the greater R2 value (0.99). The specific gravity and calorific value of the fuel oil were found to be 0.787 and 45.42 MJ kg−1, respectively. The fuel oil had higher research octane number (RON) (100.0 min) and motor octane number (MON) (85.1 min) values. These characteristics of the fuel oil were matched with conventional petroleum fuels. Further, Fourier transform infrared spectroscopy (FT-IR) and gas chromatography–mass spectroscopy (GC-MS) were used to analyze the fuel oil, and the results revealed that the fuel oil was enriched with different hydrocarbons, namely, alkane (paraffins) and alkene (olefins), in the carbon range of C4–C20. These results, and also the fractional distillation of the fuel oil, show the presence of petroleum-range hydrocarbons in the waste PP fuel oil.

Production of Fuel Oil from Blends of Refinery Products for Powering Heat Exchanger

Fuel oil, also known as furnace oil is a fraction of crude oil obtained when distillation processing is carried out in the refinery. Due to the high viscous of the heavy fuel oil, that makes it difficult to be pump throughout the pipework of the power plant, it is necessary to produce a fuel oil that will meet up the required standard. The aim of this study was to produce fuel oil from the blend of refinery intermediate product which meet certain European fuel specifications outlined in the EN 590:2009 standard alongside NMDPRA Standards. The blending stocks obtained from the Warri Refinery and Petrochemical Company (WRPC) were first filtered to remove some particulate impurities before they were analyzed to determine their properties after which, they were introduced into a mixed-tank that has an agitator connected and the blending was done using the blending ratio obtained from literature. The fuel oil produced was eventually analyzed for properties such as: Specific Gravity, API Gravity, Density, Viscosity, Kinematic Viscosity, Moisture Content, Flash Point, Cloud Point, Pour Point and Sulphur content. The sample with a composition of 33.3% of Decant oil (DCO), 33.3% Heavy gas oil (HGO), 33.3% light cycle oil (LCO) produced fuel oil of specific gravity 0.916, API Gravity 22.95, Density 0.896, Viscosity 40, Kinematic viscosity 4.7, pour point -6.5 and flash point 109, The analysis of the fuel oil meet the standard for blended fuel oil, according to the ISO 8217:2017 Standard. The results confirmed that blending of decant oil with conventional petroleum diesel (heavy and light gas oil) has a highly significant effect on the properties of the resulting fuel blend. The results show that by increasing the heavy gas oil content of the blend, the flash point of the blend increases; while increasing the decant oil content of the blend results in a decrease in Cloud point. The results of the analysis of the produced fuel oil confirms that its properties fall within the acceptable range for Fuel Oil and can be used as fuel for fired heaters and furnaces of the refinery and other process plants.

Desain Alat Pirolisis Reaktor Tunggal Untuk Daur Ulang Sampah Plastik

The purpose of this study was to determine the effect of media variations of 90% kusambi charcoal and 10% Plastic is a component that is difficult to separate from everyday human activities because of the various advantages it has. The more people consume, the more plastic waste they produce. To overcome this, of course, a way is needed to process the plastic waste into things that are more useful and also have benefits for nature, one way is by recycling the plastic waste into fuel, namely fuel in the form of oil. The benefit of this research is to produce fuel oil products from Polypropylene (PP) plastic waste as an alternative energy source by utilizing pyrolysis technology. Pyrolysis is a process for converting Polypropylene (PP) plastic waste into liquid fuel. The end result of this research is in the form of detailed images of the tool, the design of the tool, and the results of the testing process on the tool in the form of data on the quantity of oil in each test

CONVERSION OF WASTE POLYPROPILENE (PP) USING THE ZEOLITE Ni/ZSM-5 TO LIQUID FUEL

The aim of this study was to determine the quality and application of liquid oil produced by pyrolysis catalytic cracking assisted Ni/ZSM-5 from polypropylene (PP) plastic waste using a pilot plant scale pyrolysis reactor. The product of pyrolysis in the form of crude oil is refinery by a distillation bubble cap plate column which consists of 4 trays that are integrated with pyrolysis to minimize energy. The pyrolysis process is performed in a fixed-bed reactor. Plastic waste (250 g PP) and Ni/ZSM-5 catalyst (25 g) are mixed in a reactor at various temperatures of 350, 370, 390, 410, and 430ºC, heated in the reactor with a heating rate 5,3 ºC/minute to produce vapor which will be distilled, and produce the product liquid, gas, and char. The optimal yield of fuel oil at 390ºC is 239 ml of fuel oil/250 g of PP with a conversion of 79.20 %,wt (72%, liquid and 7.20% gas) the rest is char. The characteristics of the fuel oil products obtained are included in the range of gasoline and kerosene-type fuels, with an average yield value of ºAPI in the range of 51-42 for kerosene-type fuel in trays 1 and 2, and for gasoline-type fuel. has an average ºAPI value in the range of 52-63 in trays 3 and 4.

Hydrocracking of polyethylene to hydrocarbon fuels over Pt/USY catalysts: Assessment of the hydrogen donors

Hydrocracking is an effective approach to convert waste polyolefins into value-added fuels. Efficient hydrogen transfer from the hydrogen donors to the polyolefins is crucial to the hydrocracking process. In this work, we evaluated the hydrocracking effectiveness of different hydrogen donors (H2, tetralin and H2+tetralin) in polyethylene hydrocracking over a Pt/USY catalyst by analyzing and comparing the product distribution under varied H circumstances. The hydrocracking pathway using gaseous (H2) and liquidous (tetralin) hydrogen donors was proposed. The results show that the most effective H-donor for fuel oil production is H2, which yielded 65.8% oil abundant in C6–C12 range after reaction at 350 °C for 60 min. Tetralin can be dehydrogenated by Pt/USY catalyst to provide active H for PE hydrocracking, but the hydrocracking effectiveness is inferior to that using H2 because of catalyst deactivation caused by the by-products such as naphthalene from tetralin dehydrogenation. For the same reason, using H2+tetralin as H-donors is not as efficient for oil production as using sole H2 as H-donor. The reaction pathway of PE hydrocracking over Pt/USY catalyst using H2 and tetralin as the H-donor is different. Hydrocracking with H2 follows the hydrogenolysis pathway. When tetralin is presented, the hydrogenolysis pathway is cut off, followed by the thermal reactions between tetralin and PE, which inhibits PE cracking and decreases oil production.

Galesong Youth Startup Training Based on Waste Management through the Less Contact Economy

The objectives of the PKM activities are: 1) Carry out the waste processing (Collect, Recycle, Utilize); 2) waste management, marketing, and packaging materials. The PKM activity is Management Improvement through Waste management) starting with a Website-based Marketing system. Modules and Implementation Manual Provided to Partners to make it easier to understand. To measure the effectiveness of training activities by evaluating the implementation of training. The PKM training program through the DRPM grant can run well in post-pandemic situations and conditions in Takalar District, North Galesong District, and Aeng Batu-batu Village. Several programs have been adjusted, such as Mentoring activities, Technical Guidance, and face-to-face training, which are conditioned according to the post-Covid-19 health protocol. Partners already know about: (1). Implementing the management of fuel oil products originating from plastic waste; and (2). They are implementing handicraft products from plastic waste with high selling value

Non-Thermal Plasma Pyrolysis of Fuel Oil in the Liquid Phase

A pulsed plasma pyrolysis reactor with an efficient control system was designed for fuel oil processing. Non-thermal plasma pyrolysis was carried out in the liquid phase at low temperatures (not higher than 100 °C) in a 300 cm3 reactor without additional reagents or catalysts. The main process parameters and characteristics of non-thermal plasma fuel oil products were investigated within the DC source voltage range of 300–700 V. An increase in the energy of pulsed discharges led to an increase in the productivity of the plasma pyrolysis process and the yield of hydrogen but reduced the yield of acetylene and ethylene. The resulting gas consisted predominantly of hydrogen (46.5–50.0 mol%), acetylene (28.8–34.3 mol%), ethylene (7.6–8.6 mol%), methane (4.2–6.2 mol%), and C3–C5 hydrocarbons. The solid-phase products were in the form of disordered graphite and multilayer nanotubes.

Fuel oil production from thermal decomposition of the model and waste polystyrene: Comparative kinetics and product distribution

The thermal degradation of model polystyrene (MPS) and waste polystyrene (WPS) was performed in a thermobalance system at four heating rates (β) i.e., 5, 10, 15 and 20 °C/min in an inert atmosphere. The apparent activation energy (Ea) and frequency factor (A) for the MPS and the WPS were calculated using Ozawa-Flynn-Wall (OFW), Kissinger-Akahira-Sunose (KAS), and Augis-Bennetis (AB) methods. It has been determined that Ea and A vary according to fraction conversion, heating rates, and applied models. The activation energy determined for MPS was found to be in the range of 91-106, 90-105, and 114-133 kJ/mol, while, for WPS, Ea was determined in the range of 82-160, 79-159 and 102-202 kJ/mol by applying OFW, KAS, and AB models, respectively. From the results obtained, it was concluded that the Ea determined by all of these methods increases with fraction conversion, indicating that the decomposition of polystyrene follows a complex mechanism of the solid-state reaction. Hence, the kinetic parameters, i.e., Ea and A, seem to play a key role in investigating the mechanism of solid-state reactions and will provide an opportunity to develop the mechanism of the industrial decomposition reactions. The results show that the MPS has a lower activation energy compared to WPS. This high Ea of WPS may be due to the additives used in the manufacturing of different polystyrene products. Pyrolysis GC/MS of WPS indicates that the main components of pyrolysis oil are 1-hydroxy-2-propanone, styrene, α-methyl styrene, toluene, and 1,2-dimethyl benzene. The presence of some oxygenated compounds in the fuel oil of WPS may be due to contamination or additives used during polystyrene processing, as the WPS samples were collected from a garbage dump near a local market. WPS can be utilized as fuel if the fuel oil collected from the pyrolysis of WPS is properly upgraded to make it equivalent to commercial fuel oil.

Conversion of Mixed Waste Plastic into Fuel Oil Production from Pyrolysis

Pyrolysis is the thermochemical decomposition of organic materials at high temperatures in the absence of oxygen. The process usually takes place in a sealed vessel under high pressure. Pyrolysis involves the simultaneous change of chemical composition and physical phase and irreversible. Excessive pyrolysis which leaves most of the carbon as a residue is called carbonization. Pyrolysis can deal with a variety of organic materials including plastic waste, food waste, crop waste, used cooking oil, used engine oil, etc. Pyrolysis is used to transform a variety of household items and industrial residues into fuel by recovering them. During pyrolysis, the molecules of the object vibrate at high frequencies to the extent that the molecules break down. The rate of pyrolysis also increases with the increase of temperature. The temperature of household items ranges from 370°C to above 410°C. Industrial applications have temperatures above 430°C. Pyrolysis is the transformation of waste biomass into a liquid fuel form. The density of the product fuel is 0.89gram/millilitre. The fuel produced has a long carbon chain length C9-C24 which is determined by Gas Chromatography and Mass Spectrometer (GC/MS). The produced fuel functional group and energy fuel heat enthalpy value is shown in the Fourier Transform Infrared Spectroscopy (FTIR) analysis result. The fuel produced can also be used as an internal combustion engine. The feed stock can be used as feed for refineries or as power generation feed for power plants. The objective of this research is to address the problem of waste plastic by using economical technology pyrolysis for waste reduction and energy recovery. Along with these environmental problems can also be solved. With the help of economical technology, we can save the environment and the problem of inflation of petrol in our country can also be reduced to some extent.

Rancang Bangun Alat Pirolisis Reaktor Tabung Bertingkat untuk Daur Ulang Sampah Plastik Polypropylene (PP) dengan Menggunakan Metode VDI 2221

The benefits of this research are to produce fuel oil products from Polypropylene (PP) plastic waste as an alternative energy source by utilizing pyrolysis technology and increasing the economic value of unused plastic waste and as a reference for overcoming environmental pollution caused by plastic waste. The final result of this research is a detailed drawing of the tool, the design of the tool, and the results of the testing process on the tool in the form of data on the quantity of oil in each test carried out. With the VDI 2221 design method, a multilevel tube reactor pyrolysis device can be made for recycling polypropylene (PP) plastic waste with the best variant selection technique. The application of the method in this study was successfully proven by choosing concept 4 as the best concept and the concept could be made in real terms. Furthermore, the tool after testing is proven to be able to be used to produce products, as evidenced by the results of product testing in the form of oil, residue and gases

Upgrading of polyethylene to hydrocarbon fuels over the Fe-modified Pt/Al2O3 catalysts at a mild condition without external H2

Upcycling of waste plastic is an emerging topic in environmental chemical and process engineering. In this work, we investigated the pyrolysis of polyethylene (PE) over Fe-modified Pt/Al2O3 catalysts in the absence of external H2 to produce hydrocarbon fuels at a mild condition (330℃). The critical interest is to achieve the mild conversion of PE by using the bimetallic catalyst to generate in-situ H instead of external H2 for hydrogenolysis. Results show that a slight impregnation of Fe on Pt/Al2O3 (Fe/Pt = 0.25) can improve the oil yield and light oil selectivity as well as promote the formation of aromatics and alkenes in oil after PE pyrolysis in a batch reactor. Multiple active sites including Pt, Fe and Lewis acid site of Al2O3 work systematically to drive the tandem catalysis without H2. The Pt plays the major role in PE pyrolysis via hydrogenolysis assisted by in-situ generated H, but shows the mutual inhibition with the acid site of Al2O3 that is contributive to PE cracking via a traditional carbocation chemistry. Fe modification on Pt/Al2O3 plays multiple roles in catalysis: promotes cyclization reaction, benefits the hydrogenolysis activity of Pt by providing active H during aromatic formation, and decreases catalyst acidity to reduce gas production. However, an over-impregnation of Fe (Fe/Pt = 1) partially covers the Pt sites, resulting in the decrease of fuel oil production but an increase in residue yield due to the deactivation of Pt sites. The post-reaction catalyst can be almost completely regenerated after combustion and reduction.

PRODUCTION OF ENVIRONMENTAL FRIENDLY FUEL IN INDONESIAN REFINERY

Worldwide crude supplies are experiencing a mod- est trend toward heavier and high sulfur content. The average annual demand growth rate for light products (gasoline, kerosene and diesel oil) is higher than that for residual fuel oil, Therefore, converting additional bot- toms into light product by either thermal or catalytic pro- cesses will be needed. Vehicles and fuels have been developed simulta- neously and nowadays vehicles demand a very sophisti- cated fuel indeed. Environmental restriction, and efforts to minimize the pollutant problem by exhaust gases are causing design and changes in cars that in turn are hav- ing some effects on fuel quality. To reduce exhaust emission by fuel combustion, the specification of gasoline and diesel oil is now stricter. Various term in the models address qualities of the re- formulated gasoline, such as benzene, total aromatics and olefin content, RVP, the T of distillation range, sul- fur content, and oxygenate contents (Table 1)18.13.16). Diesel oil specification is limited as follows: aromatics, polyaromatics, sulfur content, T and cetane number (Table 2) (19.23,26) To improve the specification of commercial gasoline into the stricter specification of reformulated gasoline, refiners are forced in install new facilities to increase the production for high-octane mogas components. For the stricter diesel oil specification in the years 2000's, over 50% by volume of the total gas oil components (ex- cept hydrocracked gas oil) must undergo improvement by hydrotreating processes in order to achieve a suitable specification. In Indonesia, there are seven refineries with total crude oil capacity of 1,063 MBCD to produce fuel oils, lube base stocks and petrochemical products. Process- ing units and fuel oil production in Indonesia's refineries are given in Table 3 and 4, respectively. The production of gasoline and diesel oil components is review in this paper. Influence of hydrocarbon composition of those fuel components on their performances is discussed. A brief discussion is offered on the impact of the changing specification of gasoline and diesel oil on the refinery configuration.

Fuel Oil Production from Pyrolysis of Waste Polyethylene Carry Bags

Waste plastics are a significant contributor to municipal and industrial wastes. Today, environmental pollution caused by waste plastics is a worldwide serious problem due to their continuous accumulation in the environment and inability to biodegrade for a long period. As a result, it is critical to find a safe way to dispose of waste plastics. Pyrolysis is one of the most effective methods for recovering useful products from waste plastics. The pyrolysis of waste polyethylene (PE) carry bags in a batch-type reactor is studied and discussed in this paper. Generally, the pyrolytic conversion of feedstocks produces solid, liquid, and gaseous products. Optimization experiments were carried out in a batch-type pyrolysis system at 400, 450, 500, and 550 oC to recover maximum fuel oil from plastic wastes. At 500 °C, the maximum fuel oil yielded as 59.3 percent in 42 minutes from waste PE carry bags. Whereas, the char and gas yields ranged from 6.6 and 34.1%, respectively. The calorific value of fuel oil was 40.8 MJ/kg. The presence of alkanes, alkenes, and alkynes functional groups in fuel oil was revealed by FT-IR analysis. These findings suggest that fuel oil derived from waste PE bags can be used as an alternative fuel.

Pyrolysis of plastic waste for a better environmental system

Owing to the rapid utilization of fossil fuels, the world is in need of a sustainable and renewable energy source. Surplus resources of municipal solid waste and plastic waste will act as a better biomass fuel for generating electricity and liquid fuels, which can be extracted using Pyrolysis process. The present work addresses the pyrolysis process of mixed plastic wastes. This leads to fuel oil production, which is capable to reduce the problems associated with plastic waste disposal.Plastic wastes along with municipal solid waste getting generated day to day in diversified house hold and industrial wastes are addressed to be a threat and among the major sources of environmental pollution. On other hand it’s to be noticed that theses carbonaceous plastics wastes and municipal solid waste having rich carbon content. This Biomass wastes are highly capable not only to provide a renewable source of fuel but also these technologies will act as a gate way of recycling the multidisciplinary waste getting generated in the society.

Potential Use of Microbial Enzymes for the Conversion of Plastic Waste Into Value-Added Products: A Viable Solution.

The widespread use of commercial polymers composed of a mixture of polylactic acid and polyethene terephthalate (PLA-PET) in bottles and other packaging materials has caused a massive environmental crisis. The valorization of these contaminants via cost-effective technologies is urgently needed to achieve a circular economy. The enzymatic hydrolysis of PLA-PET contaminants plays a vital role in environmentally friendly strategies for plastic waste recycling and degradation. In this review, the potential roles of microbial enzymes for solving this critical problem are highlighted. Various enzymes involved in PLA-PET recycling and bioconversion, such as PETase and MHETase produced by Ideonella sakaiensis; esterases produced by Bacillus and Nocardia; lipases produced by Thermomyces lanuginosus, Candida antarctica, Triticum aestivum, and Burkholderia spp.; and leaf-branch compost cutinases are critically discussed. Strategies for the utilization of PLA-PET’s carbon content as C1 building blocks were investigated for the production of new plastic monomers and different value-added products, such as cyclic acetals, 1,3-propanediol, and vanillin. The bioconversion of PET-PLA degradation monomers to polyhydroxyalkanoate biopolymers by Pseudomonas and Halomonas strains was addressed in detail. Different solutions to the production of biodegradable plastics from food waste, agricultural residues, and polyhydroxybutyrate (PHB)-accumulating bacteria were discussed. Fuel oil production via PLA-PET thermal pyrolysis and possible hybrid integration techniques for the incorporation of thermostable plastic degradation enzymes for the conversion into fuel oil is explained in detail.

Conceptual approach for simultaneous targeting and design of refinery desulfurization solvent network

With the increasing supply of sour crude oil and rising demand of low-sulfur fuel oil products, desulfurization becomes important in refineries, leading to notable energy cost for desulfurization solvent regeneration. This paper presents the integration of desulfurization solvent network and develops a systematic targeting and design method in order to improve the overall solvent utilization. First, the desulfurization solvent sink/source and desulfurization solvent network are defined referring to the characteristics of desulfurization units. Next, a novel problem table method is developed to identify the minimum fresh solvent consumption and design the desulfurization solvent network simultaneously. A case study is conducted to provide quantitative insights in designing desulfurization solvent network and saving fresh desulfurization solvent. Such integration reduces the fresh solvent consumption by 25% and has a good practicability.

Investigating the effect of pyro-catalytic temperature on gasoline production from low density polyethylene (LDPE) plastics waste

This research aims to produce hydrocarbon fuels from LDPE plastic waste by the pyro-catalytic method. Pyro-catalytic of LDPE samples was carried out at 400, 425, 450, 475, 500, 525 and 550 °C, heating flow rate of 15 °C/min with zeolite catalyst. Fuel-oil quality analysis includes: density, viscosity, heat value, and hydrocarbon compounds using Gas Chromatrography-Mass Spectrometry(GC-MS). The pyro-catalytic process at temperatures of 400, 425 and 450 °C did not produce fuel oil, while at 550 °C it produced wax, so that the analysis of the quality of fuel-oil was not carried out. At pyrolysis temperatures of 475, 500 and 525 °C, respectively: bio-oil yield 8.4; 25.6; 46.5%; viscosity 0.81; 0.75; 0,84cP, density 0.750; 0.764; 0.756 g/mL and the caloric value of 11,403; 11,421; 11,338 kcal/kg.GC-MS spectrogram analysis of fuel-oil obtained the highest gasoline (C5-C12) content at pyrolysis temperature of 500 °C which was 81.31%.Based on the physical characteristics and percentage of the gasoline compounds content, this study recommends the production of fuel-oil from pyrolysis LDPE with zeolite catalytic done at a temperature of 500 °C because it is in accordance with fuel characteristics standards according to the American Standard and Testing Materials (ASTM).

Kajian Karakteristik dan Energi pada Pirolisis Limbah Plastik Low Density Polyethylene (LDPE)

Low-Density Poly Ethylene (LDPE), plastic waste cannot be broken down by microorganisms in the soil, has no sale value, so it is buried in the final waste disposal site. One of the plastic waste treatment methods is the pyrolysis process. The purpose of this study was to determine the type of fuel oil from pyrolysis products and to determine the energy efficiency produced against the highest fuel use. The pyrolysis equipment used is 1 reactor unit and 1 condenser unit. The characteristics of the fuel oil product analyzed are the cetane index, density, sulfur content, kinematic viscosity, flash point, and caloric value of the pyrolysis process which varies the combustion temperature in the reactor by 200°C, 250°C, 300°C and the process in the reactor, with and without the use of natural zeolite catalysts 1% against 2.5 kg of LDPE plastic waste for 6 hours. After the type of fuel produced is identified, an energy efficiency assessment of the fuel product is carried out on the use of fuel in the pyrolysis process. The results analysis show that the all product of fuel oil is a kerosene-type of fuel. The highest efficiency of 72.51% is the kerosene produced in pyrolysis using a catalyst at a temperature of 250°C with an energy value ratio of 20,402 kcal for kerosene from pyrolysis of LDPE plastic waste and 28,137 kcal for the use of Liquefied Petroleum Gas (LPG) fuel in the pyrolysis process. Pyrolysis using a 1% zeolite catalyst at 250°C has proven to be an efficient and sustainable way to treat LDPE waste into kerosene fuel.