Amount Of Biodiesel Research Articles

Utilization of waste crude glycerol for hydrogen production via steam reforming over Ni–La–Zr catalysts

The biodiesel industry generates crude glycerol (CG) at the rate of 10% of the amount of biodiesel produced. With the production of this biofuel increasing, a large amount of CG is produced each year. This results in low price for it and its final disposal becomes a significant problem. Herein, steam reforming represents a viable route to valorize this biodiesel by-product into hydrogen. The performance of Ni–La–Zr catalysts (15 wt%) for steam reforming of a CG without any purification treatment has been investigated at atmospheric pressure and at 500 °C and 650 °C. These materials were prepared using a coprecipitation method with oxalic acid. At 650 °C, the catalyst calcined at 850 °C presents higher catalytic activity and stability and displays better resistance to deactivation by carbon formation than the catalyst calcined at 700 °C. This behavior can be attributed to several causes: higher surface nickel content, higher catalyst reducibility and the presence of oxygen vacancies formed as a consequence of the partial substitution of nickel atoms into the pyrochlore structure during the formation of the biphasic system, which is related to mechanisms that act in the removal of carbon deposits on the catalyst.

Effect of compression ratio variation and waste cooking oil methyl ester on the combustion and emission characteristics of an engine

In this research, a thermodynamic zero-dimensional model has been done to predict performance characteristics (in-cylinder pressure, heat released, and the thermal efficiency) of a diesel engine with the use of biodiesel–diesel fuel blends (B0, B20, B50, B80, and B100) at different compression ratios (14, 15, 16, 17, and 18). The corresponding mathematical and thermodynamic relationships have been solved in MATLAB. Based on the experimental tests, it was found that the developed model can predict the engine variables sufficiently. According to the results, the heat release rate and the cylinder pressure increased for all fuel blends by an increase in the compression ratio. Moreover, with the increasing biodiesel amount in the fuel blend (up to 50%) heat release rate and the cylinder pressure increased but these variables have a reduction when biodiesel percentage increases from 50 to 100 due to the lower heating value of waste cooking oil methyl ester in comparison with neat diesel fuel. Moreover, according to the experimental tests, carbon monoxide emission was reduced when biodiesel proportion increased in the fuel blend but the nitrogen oxides emitted from the engine enhanced when biodiesel amount in the fuel mixture increased. According to the results, it can be concluded that B50 has better combustion characteristics among all fuel blends.

Biodiesel production by direct transesterification of wet spent coffee grounds using switchable solvent as a catalyst and solvent

Spent coffee grounds (SCGs) are a promising material for sustainable preparation of biodiesel. This study proposed a new approach for biodiesel synthesis from wet SCGs using 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) as both a green solvent and catalyst. The optimal reaction conditions were determined as a methanol amount of 6.25 mL/g of wet SCGs, DBU amount of 14.46 mL/g of wet SCGs, temperature of 60.2 °C, and reaction time of 28.65 min through response surface methodology. Under these conditions, the maximum biodiesel yield was 97.18%. Notably, DBU polarity could be regulated reversibly, facilitating its reusability and a simple process for product separation. Under optimal conditions, DBU could be potentially reused for at least 10 cycles to yield high amounts of biodiesel. This study suggests that the switchable solvent-assisted direct transesterification of wet SCGs is a potential, efficient, cost-effective, and eco-friendly approach for biodiesel synthesis.

Optimization of the factors affecting performance and emissions in a diesel engine using biodiesel and EGR with Taguchi method

Biodiesel obtained from different vegetable or animal fats is a renewable fuel that can be used without any modification in diesel engines. And using biodiesel gives close performance data compared to diesel fuel. However, it increases the NOx (Nitrogen oxide) emissions, which is a major problem for diesel engines. Therefore, considering both the amount of biodiesel in blend fuel and NOx emissions reduction measures can be much more effective. If various factors are used together, it is necessary to determine the optimum conditions and utilization amounts considering performance and emissions. In this study, using different proportions of corn oil methyl ester (COME) blends (B0, B10, B20 and B50) and EGR (EGR0, EGR10, EGR15 and EGR20) on a direct injection (DI) diesel engine at variable loads (40%, 60%, 80% and 100%) and speed (1600 and 2400 rpm) conditions, the optimum factor levels in terms of performance and emission characteristics were determined by Taguchi method. As a result of the experimental design, L16 orthogonal array (OA) was found to be suitable and the studies were performed according to the combinations given in this array. The effect levels of factors were analyzed by ANOVA analysis. According to the results of the analysis, optimum levels of all factors were determined in terms of engine performance and emission characteristics.

Effect of manifold injection of methanol/n-pentanol in safflower biodiesel fuelled CI engine

This paper intends to study the influence of methanol and n-pentanol pre-injection in the inlet manifold with safflower oil biodiesel (B100) as base fuel replacing diesel. Safflower oil biodiesel was prepared through the transesterification process. Experiments were conducted in a single cylinder CI engine with the test fuels to evaluate the performance, emission and combustion parameters. Methanol and n-pentanol were injected in the inlet manifold along with intake air which enters the combustion chamber during the intake stroke. Both methanol and n-pentanol were injected 10% and 30% on a mass basis along with B100. The results demonstrated that the brake thermal efficiency in comparison to neat biodiesel operation is higher with methanol and n-pentanol injection. On 10% mass basis, the efficiency is higher with n-pentanol engine operation than methanol whereas the trend is opposite when 30% mass percentage of alcohols is used, due to higher heat release with methanol since its latent heat of vaporization is highest. The HC, CO and NOx emissions were higher with alcohol injection. Whereas the smoke emissions reduced with alcohol injection. The reduction in smoke emissions is due to homogeneous mixture formation between the pre-injected alcohols and air and less amount of biodiesel injected in this mixture. The increase in the mass percentage of alcohol tends to lower the smoke emissions further.

Techno-Economic Performance of Different Technological Based Bio-Refineries for Biofuel Production

There are different technologies for biodiesel production, each having its benefits and drawbacks depending on the type of feedstock and catalyst used. In this study, the techno-economic performances of four catalyst technologies were investigated. The catalysts were bulk calcium oxide (CaO), enzyme, nano-calcium oxide, and ionic liquid. The study was mainly based on process simulations designed using Aspen Plus and SuperPro software. The quantity and quality of biodiesel and glycerol, as well as the amount of biodiesel per amount of feedstock, were the parameters to evaluate technical performances. The parameters for economic performances were total investment cost, unit production cost, net present value (NPV), internal return rate (IRR), and return over investment (ROI). Technically, all the studied options provided fuel quality biodiesel and high purity glycerol. However, under the assumed market scenario, the process using bulk CaO catalyst was more economically feasible and tolerable to the change in market values of major inputs and outputs. On the contrary, the enzyme catalyst option was very expensive and economically infeasible for all considered ranges of cost of feedstock and product. The result of this study could be used as a basis to do detail estimates for the practical implementation of the efficient process.

Study of Corrosion in Diesel Engine Piston by Soybean Biodiesel and its Mixtures

Of the renewable energy sources, which are less polluting and with the same efficiency of petroleum products, we highlight biodiesel, a renewable and promising source of clean energy, which is now being added in small quantities to commercial diesel used in diesel cycle engine. However, it is necessary to evaluate several factors, so that the amount of biodiesel in the diesel is increased, among them the physicochemical properties of the biodiesel and its mixtures with the commercial diesel, so that they are according to specification of the National Petroleum Agency (ANP) besides the corrosion that it can cause to the constituents of the motor, when in contact. Thus, this work had as main objective to verify the existence of a corrosive process in diesel engine piston when in contact with commercial diesel, biodiesel, and its mixtures, in different proportions and temperatures. For this, initially accomplished the biodiesel synthesis and the characterizations physiochemical of the same. Posteriorly, got it forty-four samples, which were immersed in the pure biodiesel (B100) and its mixtures with commercial diesel in the proportions of 7, 10, 20, 30, 40, 50, 60, 70, 80, and 90% in different temperatures, after the immersion tests, it was calculated the corrosion rate present and analysis of the samples with the help of the scanning electron microscopy (SEMA), that were analyzed through of the ImageJ program. After analysis, it can be concluded that the biodiesel synthesized had the properties within the limits established by the ANP, that the corrosion in the material that compose the engine piston in the studied period was low for all the mixtures used. Therefore, it is suggested that the biodiesel obtained in this work and itis respective mixtures are viable as alternative renewable sources to be applied as fuel in engines. DOI: http://dx.doi.org/10.17807/orbital.v11i5.1404

The greenBag, the New Solution in Waste Separation

The greenBag is an innovative households’ Used Cooking Oil (UCO) disposal solution aiming to allow the collection of this feedstock interesting European but also Chinese and US market. The possibility to collect UCO produced by households represents the possibilities to increase the amount of biodiesel, respecting the ILUC directive, of the 60%. So far, there are no concrete solutions able to properly respond to this need, due to their huge prizes and due to the low performances, they provide. greenBag is a solution coming from an intensive research activity completed by an infield validation. It has been designed to reply to all the requirements coming from families and from the waste management companies, the two actors involved in UCO disposal. Indeed, two different types of users in general, and in particular the UCO collection, characterize waste collection solutions: families - that want simple solutions, easy to use and able to reward them; waste collection companies - that want cheap solutions, able to trace waste disposals and able to assure them a high quality of wastes. The currently available market solutions are all focused on waste companies and the current innovative ideas designed by Universities and Startups focus their attention only on one of the two involved actors. greenBag is currently the sole solution that aims to satisfy both actors, exploiting the disposal traceability not only to know how many waste people produces but also to quantify their efforts and making them aware about the overall disposal process.

Evaluation of an enhanced ultrasonic-assisted biodiesel synthesized using safflower oil in a diesel power generator

Given the energy crisis, fossil fuel reserves crisis, climate mitigation, and energy efficiency increase, scientists have embarked on producing alternative fuels such as the biodiesel. This study was conducted to investigate the feasibility of biodiesel production from safflower oil using the ultrasonic system, and to evaluate the produced fuel using a diesel power generator. In this study, the effects of alcohol-to-oil molar ratio, ultrasound power (W), catalyst concentration (w/w %), and the reaction time (min) on methyl ester yield were investigated. By increasing the molar ratio to a point between the ratios 4:1 and 6:1, the conversion rate first increases 11.42%, and then it remains unchanged from the point 6 to 8. As the ultrasonic power increases, the rate of conversion increases incrementally. The optimization was obtained at 7.02 molar ratio, 160 W ultrasound power, 0.95 (w/w%) catalyst concentration, and 8.47 min reaction time. The results showed that the brake torque and broke power increased when the amount of biodiesel in fuel increased from B0 to B50. The results showed that CO emissions decreased and NOx increased when there was an increase of amount of biodiesel.

The use of glycerine as motor fuel

Glycerine as waste from production accounts for about 10% of the obtained amount of biodiesel. It is a very attractive substance for the industry, however, currently the industry is not able to absorb such a large amount of glycerine produced during the production of fuel. Therefore, one should look for other ways of disposing of glycerol with simultaneous benefit in the form of energy yield or useful products / semi-finished products. The development of glycerine is necessary due to the continuous development of the biofuel market. In the near future, surplus glycerine may pose serious problems in the growth of biodiesel production. The publication presents the results of scientific research on the use of liquid technical glycerine and its processing products in the gasification process, as engine fuel.

Isolation of high lipids content microalgae from Wonorejo rivers, Surabaya, Indonesia and its identification using rbcL marker gene

Abstract. Saputro TB, Purwani KI, Ermavitalini D, Saifullah AF. 2019. Isolation of high lipids content microalgae from Wonorejo river, Surabaya, Indonesia and its identification using rbcL marker gene. Biodiversitas 20: 1380-1388. Microalgae are unicellular organism which possesses various biologically active metabolites that used in food, cosmetic, pharmaceutical, nutraceutical, and bioenergy industries. One of the most important active metabolites found in microalgae is lipid which can be converted into biodiesel. The higher amount of lipid produced will increases the amount of biodiesel that can be obtained. Although, the production of active metabolites in microalgae has rather fluctuated as it is difficult to obtain the pure cultures of microalgae since it has a cryptic phenomenon. This problem can be solved through identification technique using molecular markers or DNA Barcoding. This research used rbcL gene as the molecular marker in species identification. rbcL gene encode ribulose-1,5-bisphosphate carboxylase (RubisCo) in chloroplast genome. Furthermore, microalgae were isolated from 3 different stations of Wonorejo river estuary, Surabaya, East Java, Indonesia. The isolated microalgae were then identified based on Freshwater algae: identification and use as bioindicators book. Eight isolates were successfully identified as Mycrocystis sp., Nostoc sp., Chlorella sp., Tabellaria, Synedra, Nitzschia, Navicula, and Closteriopsis. Out of eight, only 3 species that has a good potential to be developed as biodiesel sources i.e Chlorella sp., Synedra sp., and Navicula sp. that produce 21,20%, 20,30%, 27,20% of total lipids over their biomass. The genomic DNA from those three candidates were then isolated and used as a template to amplify rbcL gene. The obtained fragment of rbcL gene was sequenced and then submitted to the Basic Local Alignment Search Tool (BLAST). The result of BLAST used for alignment and phylogenetic tree construction. The result from BLAST shows the same results as the genus observed by microscopy observation. Overall, this research provides information about the genetic variety of microalgae in Wonorejo which has high potential to be further developed as biodiesel.

Techno‐economic performance of a bio‐refinery for the production of fuel‐grade biofuel using a green catalyst

AbstractThe main challenge to the wider use of biodiesel as a transport fuel has been its high cost of production. Studies have been performed to obtain the cheapest methods for biodiesel production. The calcium oxide catalyzed transesterification reaction has shown better performance for fuel‐grade biodiesel from cheaper feedstock. In this study, a calcium oxide catalyzed biodiesel production process is designed in four different scenarios based on different possible arrangements of the downstream processes.The process flow diagrams of the different scenarios were designed using Aspen Plus and Super Pro software. These process simulations were used to evaluate the techno‐economic performance of the process scenarios. Technical performance was been evaluated based on the quantity and quality of the biodiesel and glycerol produced, the amount of biodiesel produced per amount of feedstock consumed, and the amount of other valuable byproducts. Similarly, the economic performance of the process scenarios has also been assessed using parameters such as total investment cost, unit production cost, net present value, internal rate of return, payback time, and return on investment.Each of these four scenarios was divided into two production capacity levels to investigate the effect of change in production capacity on the economic feasibility of the process scenarios.The scenario with consecutive centrifugations for glycerol and soap separation, and distillation for biodiesel purification, evidenced poor technical performance, whereas the double reactor scenario provided more, and better quality, product, and the economic feasibility of this scenario was good when the oil supply rate was above 4600 kg h−1. © 2019 Society of Chemical Industry and John Wiley & Sons, Ltd

O-Rings Material Deterioration due to Contact with Biodiesel Blends in a Dynamic Fuel Flow

O-rings are a primary component made from polymeric materials in most diesel engine systems. For oil-fuelled operations, O-rings tend to degrade after exposure to fuel in certain operating condition and periods. Degradation of O-rings can cause engine leakage. This study is intended to test the O-rings material which contacted with biodiesel in dynamic flow by considering the potential deterioration caused. The use of biodiesel may contribute to accelerating deterioration of O-rings. The boiler fuel system was duplicated in this test, where the biodiesel used was palm oil based. The O-rings tested are made of materials of Fluorocarbon elastomer (FKM), Nitrile Rubber (NR) and Silicone Rubber (SR). The effects on O-rings were observed on changes in mass, volume, and thickness. The material compatibility is indicated by elongation, swelling and chemical resistance of elastomers with various fuel flow rates. The fuel flow with high volumetric rate tends to damage the O-rings faster as effected on the immersion test. FKM-Viton performed as materials with the best physical and chemical resistance. Dynamic fuel flow in the engine system showed that SR is deteriorated faster than NBR and FKM. The resistance of O-ring material to fuel in the system is not linearly influenced by the amount of biodiesel in the fuel.

A Comparative study of cyanobacteria and microalgae for biofuel production

The use of algae for producing biofuel is expected to play a critical role as an alternative energy source in the near future, particularly in light of depleting fossil fuel reserves and the adverse environmental impact on fossil fuels.This study discusses the production of biofuel from cyanobacteria and microalgae by various processes. Microalgae and cyanobacteria can produce high amount of lipids and that is the sole reason for they being identified as a potential biodiesel feedstock. They also have the ability to fix CO2 and have rapid growth rates. It is observed that algae can be converted to oily substances that grows in Carbon-dioxide enriched air. It also can contribute to solve major problems of air pollution resulting from CO2 evolution This experiment is undertaken to know the proper trans-esterification, amount of biodiesel production (ester) from cyanobacteria and microalgae species. In this experiment, common species such as Cyanobacterium aponinum and Spirogyra sp. are used to compare the amount of biodiesel production. It is observed that C.aponinum can produce high amount of algal oil and biodiesel (ester) than Spirogyra sp. However, biomass when calculated was found to be higher in C.aponinum compared to Spirogyra sp. The paper indicates that biodiesel can be produced from both the species with C.aponinum being a better one.

MULTIPARAMETRIC OPTIMIZATION FOR THE SELECTION AND IMPLEMENTATION OF TECHNOLOGICAL SOLUTIONS FOR THE PRODUCTION OF BIODIESEL FROM WASTE OIL-CONTAINING MATERIALS

In this work, a multi-parameter, multi-criteria parameter optimization of the mathematical model we have developed is performed. The use of reasonable parameter limits, determined through extensive statistical observations and analyses, enables the generation of optimal technological and logistical solutions for the use of biodiesel. Based on the selection of suitable oil-containing raw materials and such wastes, it allows the construction of optimum technological-logistical chains, providing the necessary amount of biodiesel in a certain territorial unit.

THE IMPACT OF BIOFUELS PRODUCTION IN THE WORLD ON THE PRICES OF EGYPTIAN IMPORTS OF FOOD COMMODITIES

Vthe natural sources of energy such as oil, coal and all other fossil fuels, bio fuels is defined as an energy that derived from living organisms, whether plant or animal, the production of bio fuels is consumed with about , and about 9% of the quantity produced of the oils to produce biodiesel, which will rise to 20% by 2018. And that 2% of the total area of crops in the world, used in the production of bio fuels will rise to 4% by 2030. The study problem can be summarized of the rise in petroleum prices from $49 a barrel in 2000 to 146 dollars in 2015, and are the major countries trying to extend its influence on the Middle East states that producing petroleum during internal conflicts of these States, as well as to the orientation of the major countries to produce bio-fuel from plant oils, which leads to a lack of world supply, which had a negative impact on the imported states of the plant oil crops in raising the prices of plant oil crops. The study aims to identify the impact of bio fuels production in the world on import prices of Egypt from strategic food commodities from plant oil . As for the development of self-sufficiency ratio of plant oil it decline significant statistically of about 10.04% of the average period of about 45.8% as the local global, price and the import price for plant oils they are an increase significant statistically by about 4.1%, 5.8% and 9.5% respectively of the average study period of about 553, 910, 1658 dollar/ton. Study of the impact of the world price of a barrel of oil, the net amount of the global biodiesel produced the total elasticity to the function reached about 1.56, that is, an increase of the world price of a barrel of oil, 10% would lead to an increase in the biodiesel production with 15.6% . The study showed that the quantity world biodiesel plant oil, of the most important factors affecting the Egypt important prices the total elasticity reached about 0.25, that is, an increase in the net amount of biodiesel produced by 10%, will lead to an increase in the world price of plant oil by 2.5% during the study period . Studying the impact of the quantity of world production of biodiesel on the import price of plant oils, the total elasticity of function reached about 0.41, that is, an increase in the quantity of world production of biodiesel with 10%, will lead to an increase in the import price of plant oils by 4.10% during the study period. The study showed that the most important factors affecting imports of plant oils in Egypt with increasing the quantity of domestic consumption by 10%, will lead to an increase in the quantity of Egypt's imports of plant oils with about 7.9%, and an increase in the quantity of world production of biodiesel, will lead to increase Egypt's imports of oils with about 5%RECOMMENDATIONS: The study recommends with 1.It is necessary of the ministry of Agriculture to concentrate in its policy on raising the rate of self-sufficiency of plant oil crops. 2. It is must be working diversifying the sources of import markets, plant oil crop from throw studying the world markets or support the farmers to cultivating the oil crops 3. Studying the increasing of the domestic price per ton of oil crops to encourage the farmers to grow these crops to force the world increasing in prices. 4. Studding the possibility of cultivation the oil palm that could contribute to achieving the rate of self-sufficiency of the plant oil for Egypt. 5. Activation the application of the contract farming system for oil crops through cooperatives or agricultural development bank so as to ensure the farmers from marketing his crop.

Optimization of cultural conditions for lipid accumulation by Aspergillus wentii Ras101 and its transesterification to biodiesel: application of response surface methodology.

The present study is aimed to maximize biodiesel production by using the fungal strain Aspergillus wentii Ras101 as a feedstock. Response surface methodology was used to relate the interaction between some nutritional and environmental factors affecting the lipid productivity by A. wentii Ras101. By applying LINGO optimization program, the maximum lipid production of 40% dry biomass of this fungal isolate has been attained in a fermentation medium composed of 50g/l glucose, 1g/l nitrates, 1.5g/l phosphorous, and 0.5g/l NaCl. This medium was adjusted at pH of 6, and incubated at 28°C for 7 days. The values of correlation errors between the experimental and estimated values are less than 1%; this proves that the proposed correlation could be used effectively for estimating the fungal lipid production. Consequently, the effects of time and temperature on the amount of biodiesel produced in the extraction and transesterification one-step process have been investigated. The maximum biodiesel production of 28% dry biomass (80% lipid) has been achieved in the transesterification process at 70°C for 30min. Additionally, it is found that the combination of glucose, nitrogen and phosphorous contents has a positive influence on lipid production in the fungal biomass. The density, kinematic viscosity, water content and calorific value of the produced biodiesel were 800kg/m3, 2.8 mm2/s, 66ppm and 10122kcal/kg, respectively that matched well with biodiesel and fossil standard specifications.

EVALUATION OF CANOLA BIODIESEL PURIFICATION FOR ITS USING AS A SUBSTITUTE FOR DIESEL FUEL IN RURAL COMMUNITIES

The aim of this study was biodiesel purification with different methods beyond water by using different materials was used for this purpose. A large amount of biodiesel was produced from canola oil as source of oil therefore methanol alcohol had been added with potassium hydroxide (KOH) as catalyst. After 8 hours, biodiesel was separated from glycerol where glycerol was under the biodiesel using gravity. To purify biodiesel from remains of glycerol, water and alcohol, some materials filled two filters. Materials were rice husk grind, bagasse grind, saw dust, magnesium silicate and water. The results showed that the water, methanol and glycerol contents were 0.04, 0.01 and 0.23% respectively with using grind bagasse, but they were 0.2, 0.03 and 0.24% respectively with using water in purification process. So the bagasse grind was better than other materials in purification process of canola biodiesel.

Biodiesel production through sulfuric acid catalyzed transesterification of acidic oil: Techno economic feasibility of different process alternatives

Biodiesel is renewable fuel produced from fats and oils. When compared to conventional diesel fuel, it has considerable environmental benefits. However, its extensive use is hindered by high cost of production, mainly due to cost of feedstock. Among the different biodiesel production routes, acid catalyzed transesterification enables to use feedstock with higher free fatty acid content (cheaper feedstock). The absence of soap formation while using acid as a catalyst also simplifies the downstream separation and purification processes. In this study, a homogeneous sulfuric acid catalyzed transesterification of acidic oil is designed into four process scenarios based on four different downstream process routes.The conceptual design and simulation of these process alternatives have been carried out using Super Pro and Aspen Plus software. These process models were used to evaluate the techno economic competitiveness of the four different scenarios. In the four process scenarios, all reactors for biodiesel production have been designed to have the same reaction conditions and the same amount of oil feedstock input. The difference of the scenarios was only on the arrangements and type of downstream process equipment required to get fuel grade biodiesel. The technical performances have been evaluated based on quality and quantity of products as well as the amount of biodiesel produced per feedstock consumed. The specific economic parameters considered were Unit Production Cost, NPV, IRR (after tax), and Payback time. The process scenario with ethanol recovery after catalyst neutralization and glycerol separation using decanting just before biodiesel purification has better technical and economic performances. Whereas the double reactor scenario shows much better technical performances with very low economic feasibility.

Techno-economic feasibility of producing biodiesel from acidic oil using sulfuric acid and calcium oxide as catalysts

Biodiesel is becoming one of the best alternative fuels to substitute conventional diesel fuel for its environmental and fuel benefits. However, its full-fledged substitution to conventional diesel is hindered mainly due to its high cost of production. More than 85% of the production cost is attributed to feedstock cost. This forces to look for alternative feedstock at lower cost, which usually do have higher free fatty acid content. A number of investigations have been done to evaluate the technical and economic efficiency of biodiesel production from such acidic oil. Accordingly, in this study, three alternative production processes using two catalysts have been designed for techno-economic analysis. Sulfuric acid (H2SO4) catalyzed Transesterification and Esterification of Acidic oil; Calcium oxide (CaO) Catalyzed Transesterification of Acidic oil; and CaO catalyzed Transesterification with Pre-Esterification of Acidic oil with H2SO4.Super Pro design and Aspen Plus softwares were used to perform the conceptual design and simulation of the different alternatives. The techno-economic competitiveness of three different scenarios were evaluated. The technical parameters were amount and quality of biodiesel and glycerol as well as the amount of biodiesel produced per feedstock used. The economic parameters considered were Total Investment Cost, Operating Cost, Unit Cost of Production, NPV, ROI and Payback time. The CaO catalyzed process could show better economic performances.