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Author

H.M. Mahmudul

Other affiliations: Universiti Malaysia Pahang
Bio: H.M. Mahmudul is an academic researcher from Central Queensland University. The author has contributed to research in topics: Diesel fuel & Biodiesel. The author has an hindex of 8, co-authored 13 publications receiving 547 citations. Previous affiliations of H.M. Mahmudul include Universiti Malaysia Pahang.
Topics: Diesel fuel, Biodiesel, Diesel engine, Biofuel, Biogas

Papers
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Journal ArticleDOI
TL;DR: In this paper, the authors provided the substantial information on biodiesel to the researchers, engineers and policy makers, and concluded that biodiesel has the potential to be used as a diesel fuel substitute in diesel engines to solve the energy and environment crisis.
Abstract: Due to the finite stock of fossil fuels and its negative impact on the environment, many countries across the world are now leaning toward renewable sources energies like solar energy, wind energy, biofuel, hydropower, geothermal and ocean energy to ensure energy for the countries development security. Biodiesel is one kind of biofuel that is renewable, biodegradable and has similar properties of fossil diesel fuel. The aim of this paper is to provide the substantial information on biodiesel to the researchers, engineers and policy makers. To achieve the goal, this paper summarizes the information on biofuel development, feedstocks around the world, oil extraction technic, biodiesel production processes. Furthermore, this paper will also discuss the advantages of biodiesel compared to fossil fuel. Finally, the combustion behavior of biodiesel in an internal combustion engine is discussed and it will help the researchers and policy maker and manufacturer. To determine the future and goal of automotive technology the study found that, feedstock selection for biodiesel production is very important as it associates 75% production cost. Moreover, the test of fuel properties is very important before using in the engine which depends on the type of feedstocks, origin country, and production process. Most of the researchers reported that the use of biodiesel in diesel engine reduces engine power slightly but reduces the harmful emission significantly. Finally, the study concludes that biodiesel has the potential to be used as a diesel fuel substitute in diesel engines to solve the energy and environment crisis.

467 citations

Journal ArticleDOI
TL;DR: In this paper, the authors presented the findings on global energy scenario, potential of biofuel as a renewable energy source, biofuel policy and target of some selected countries and the effect of mixed blends of bio fuel and diesel on engine performance and emission parameters of a diesel engine.
Abstract: Present energy situation of the world is unsustainable due to unequal geographical distribution of natural wealth as well as environmental, geopolitical and economical concerns. Ever increasing drift of energy consumption due to growth of population, transportation and luxurious lifestyle has motivated researchers to carry out research on biofuel as a sustainable alternative fuel for diesel engine. Biofuel such as biodiesel and ethanol, produced from renewable feedstock’s, are the most appropriate alternative of petroleum fuels. Government of many countries has set a target to use biofuel in transportation and industrial sectors to reduce the fossil fuel demand in their countries. This report compiled the findings on global energy scenario, potential of biofuel as a renewable energy source, biofuel policy and target of some selected countries and the effect of mixed blends of biofuel and diesel on engine performance and emission parameters of a diesel engine. The study concluded that the energy consumption and CO 2 emissions in ASEAN countries increasing day by day. To reduce the energy consumption and harmful gasses emission to the environment, government of ASEAN countries have set target to use biofuel in diesel engines as biofuel-diesel blend have potential to reduce dependency on fossil fuel as well as the exhaust emissions of the engine.

69 citations

Journal ArticleDOI
TL;DR: The study revealed that the solar-assisted AD system produces less pollution and improves performance compared to the conventional AD system, and further work on effective low-cost technologies is recommended, especially using SAB system upgrading and leveraging the opportunities of this system.

53 citations

Journal ArticleDOI
TL;DR: In this article, the physical and chemical properties of Moringa oleifera biodiesel and its blends of 10%-90% by volume with petro-diesel according to the ASTM D6751) standards and European standards (EN 14214).

48 citations

Book ChapterDOI
01 Jan 2017
TL;DR: In this article, the ester composition and fuel properties of five different feedstocks have been characterized for their physical and chemical properties, and the results show that the properties of produced biodiesel are within the acceptable limit of ASTM and EN standards.
Abstract: Fuel properties of biodiesels are influenced by the physical features of the fatty acid composition, such as the degree of unsaturation, the percentage of saturated fatty acid, monounsaturated fatty acid, and polyunsaturated fatty acid. Fuel properties are the key factors in determining the suitability of any fuel as an alternative fuel. In this study, biodiesels from five different feedstocks have been characterized for their physical and chemical properties. Gas chromatography has been carried out to find out the ester composition of these five biodiesels, and correlation between composition and fuel properties of these five biodiesels have been developed. Fuel properties were measured according to standard procedure ASTM D6751 and EN 14214 and estimated based on the previously published correlation. Also, the quality of these biodiesels was assessed and compared with commercially available biodiesels through multivariate data analysis using PROMETHEE-GAIA software. In the last part, wear and friction of selected biodiesel fuels have been studied and compared with diesel fuel. The result shows that the properties of produced biodiesel are within the acceptable limit of ASTM and EN standards. Highly linear correlations were found between the composition and cetane number, iodine value, oxidation stability, and cold flow plugging point with the regression value of 0.9965, 0.9983, 0.7044, and 0.9985, respectively. Overall, this study found that, among the biodiesels studied, the palm biodiesel was the most suitable alternative followed by the macadamia, moringa, and jatropha, and beauty leaf biodiesel.

24 citations


Cited by
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Journal Article
TL;DR: A review of the turn of events and points of view of biogas in and its utilization for power, heat and in transport in the European Union (EU) and its Member States is presented in this article.
Abstract: This paper presents a review of the turn of events and points of view of biogas in and its utilization for power, heat and in transport in the European Union (EU) and its Member States. Biogas creation has expanded in the EU, empowered by the sustainable power strategies, notwithstanding monetary, ecological and atmosphere benefits, to arrive at 18 billion m3 methane (654 PJ) in 2015, speaking to half of the worldwide biogas creation. The EU is the world chief in biogas power creation, with more than 10 GW introduced and various 17,400 biogas plants, in contrast with the worldwide biogas limit of 15 GW in 2015. In the EU, biogas conveyed 127 TJ of warmth and 61 TWh of power in 2015; about half of absolute biogas utilization in Europe was bound to warm age. Europe is the world's driving maker of biomethane for the utilization as a vehicle fuel or for infusion into the petroleum gas network, with 459 plants in 2015 creating 1.2 billion m3 and 340 plants taking care of into the gas network, with a limit of 1.5 million m3. Around 697 biomethane filling stations guaranteed the utilization 160 million m3 of biomethane as a transport fuel in 2015.

703 citations

Journal ArticleDOI
15 Feb 2020-Fuel
TL;DR: In this article, a comprehensive assessment of various feedstocks used for different generation biodiesel production with their advantages and disadvantages are also explained, and different production methods for biodiesel with yield calculation is also explained.

505 citations

Journal ArticleDOI
TL;DR: In this paper, the authors provided the substantial information on biodiesel to the researchers, engineers and policy makers, and concluded that biodiesel has the potential to be used as a diesel fuel substitute in diesel engines to solve the energy and environment crisis.
Abstract: Due to the finite stock of fossil fuels and its negative impact on the environment, many countries across the world are now leaning toward renewable sources energies like solar energy, wind energy, biofuel, hydropower, geothermal and ocean energy to ensure energy for the countries development security. Biodiesel is one kind of biofuel that is renewable, biodegradable and has similar properties of fossil diesel fuel. The aim of this paper is to provide the substantial information on biodiesel to the researchers, engineers and policy makers. To achieve the goal, this paper summarizes the information on biofuel development, feedstocks around the world, oil extraction technic, biodiesel production processes. Furthermore, this paper will also discuss the advantages of biodiesel compared to fossil fuel. Finally, the combustion behavior of biodiesel in an internal combustion engine is discussed and it will help the researchers and policy maker and manufacturer. To determine the future and goal of automotive technology the study found that, feedstock selection for biodiesel production is very important as it associates 75% production cost. Moreover, the test of fuel properties is very important before using in the engine which depends on the type of feedstocks, origin country, and production process. Most of the researchers reported that the use of biodiesel in diesel engine reduces engine power slightly but reduces the harmful emission significantly. Finally, the study concludes that biodiesel has the potential to be used as a diesel fuel substitute in diesel engines to solve the energy and environment crisis.

467 citations

Journal ArticleDOI
TL;DR: In this paper, the authors provide an overview of biodiesel production with a description of various kinds of feedstock used, their advantages and disadvantages, and a detailed description of different classes of different biodiesel, including a characterization, assessment of qualities and limitations, and quality analysis.
Abstract: The over-exploitation of non-renewable resources leads to the depletion of energy reserves, as well as a rise in the price of petroleum-based fuels. Thus, there is a need to find suitable and sustainable substitutes for conventional fuels. The main features required for an alternative fuel are availability and renewability, or lower dependence on restricted resources accompanied with no or lower pollution. Due to their eco-friendly and non-toxic nature, biodiesel has been attracting increasing interest. Biodiesel production can be accomplished using various raw materials, catalysts, and technologies. In recent years, nanocatalyst technology has been widely used for biodiesel production due to its numerous advantages, such as large surface area, reusability and high activity of the nanocatalyst. This review provides an overview of biodiesel production with a description of various kinds of feedstock used, their advantages and disadvantages. Further, it offers a detailed description of different classes of biodiesel, including a characterization, assessment of qualities and limitations, and quality analysis of each type. Various methodologies used for biodiesel production are also elucidated, focusing on the potential of nanocatalyst processes. The aspect of nanocatalyst regeneration and reuse is also considered. This review delivers a comprehensive overview of biodiesel synthesis by discussing recent trends and challenges in this field, which will further the development of economically sustainable biodiesel production.

402 citations

Journal ArticleDOI
TL;DR: In this paper, the Fatty acid (FA) profiles of 28 edible vegetable oils and 40 non-edible vegetable oils were collected and their main specifications including sulfur content, density, viscosity, flash point, cloud point, pour point, cold filter plugging point, cetane number, iodine number, heating value, acid value and carbon residual before and after transesterification (vegetable oil and biodiesel, respectively) were analyzed in detail.
Abstract: In recent decades, the concern over depletion of the world׳s petroleum reserves and environmental pollution has increased the demand to develop a renewable and environmental friendly fuel. Biodiesel, which mainly consists of Fatty Acid Methyl Esters (FAME) is one of the best substitutes for diesel fuel. Currently, vegetable oils, edible or non-edible, are the main resources of biodiesel. This review aims at providing comprehensive information and analyzes on biodiesel produced from edible and non-edible vegetable oils, their composition and specifications. Accordingly, the Fatty Acid (FA) profiles of 28 edible vegetable oils and 40 non-edible vegetable oils were collected. Their main specifications including sulfur content, density, viscosity, flash point, cloud point, pour point, cold filter plugging point, cetane number, iodine number, heating value, acid value and carbon residual before and after transesterification (vegetable oil and biodiesel, respectively) were analyzed in detail. Many researchers have developed prediction models to quantify biodiesel specifications to optimize its manufacturing and obtain biodiesel with the best specifications. Three factors that are especially influential are the fatty acids profiles, the degree of unsaturation within the FA structures and molecular weight. Accordingly, many models have been constructed on these features. There are also models that quantify the relationship between the biodiesel specifications and its thermodynamic properties or other specifications. Accordingly, the second part of this work was conducted on the existing prediction models. All the models were discussed along with their deviation in prediction.

366 citations