scholarly journals Bioethanol Production from Fermentable Sugar Juice

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
Hossain Zabed ◽  
Golam Faruq ◽  
Jaya Narayan Sahu ◽  
Mohd Sofian Azirun ◽  
Rosli Hashim ◽  
...  
Keyword(s):  
Ethanol Production ◽  
Fossil Fuels ◽  
Raw Materials ◽  
Bacterial Species ◽  
Environmental Safety ◽  
Free Sugar ◽  
Bioethanol Production ◽  
Political Crises ◽  
Number Of Factors ◽  
Increasing Demand

Bioethanol production from renewable sources to be used in transportation is now an increasing demand worldwide due to continuous depletion of fossil fuels, economic and political crises, and growing concern on environmental safety. Mainly, three types of raw materials, that is, sugar juice, starchy crops, and lignocellulosic materials, are being used for this purpose. This paper will investigate ethanol production from free sugar containing juices obtained from some energy crops such as sugarcane, sugar beet, and sweet sorghum that are the most attractive choice because of their cost-effectiveness and feasibility to use. Three types of fermentation process (batch, fed-batch, and continuous) are employed in ethanol production from these sugar juices. The most common microorganism used in fermentation from its history is the yeast, especially,Saccharomyces cerevisiae, though the bacterial speciesZymomonas mobilisis also potentially used nowadays for this purpose. A number of factors related to the fermentation greatly influences the process and their optimization is the key point for efficient ethanol production from these feedstocks.

Key drivers influencing the commercialization of ethanol-based biorefineries

1969 ◽  
Vol 16 (3) ◽  
Author(s):  
Anuj K Chandel ◽  
Om V Singh ◽  
Gajula Chandrasekhar ◽  
Linga Venkateswar Rao ◽  
Mangamoori Lakshmi Narasu
Keyword(s):  
Ethanol Production ◽  
Large Scale ◽  
Fossil Fuels ◽  
Process Integration ◽  
Raw Materials ◽  
Cellulase Production ◽  
Bioethanol Production ◽  
Recent Developments ◽  
Key Drivers ◽  
The Cost

The imposition of ethanol derived from biomass for blending in gasoline would make countries less dependent on current petroleum sources, which would save foreign exchange reserves, improve rural economies and provide job opportunities in a clean and safe environment. The key drivers for successful commercial ethanol production are cheap raw materials, economic pretreatment technologies, in-house cellulase production with high and efficient titers, high ethanol fermentation rates, downstream recovery of ethanol and maximum by-products utilization. Furthermore, recent developments in engineering of biomass for increased biomass, down-regulation of lignin synthesis, improved cellulase titers and re-engineering of cellulases, and process integration of the steps involved have increased the possibility of cheap bioethanol production that competes with the price of petroleum. Recently, many companies have come forward globally for bioethanol production on a large scale. It is very clear now that bioethanol will be available at the price of fossil fuels by 2010. This article intends to provide insight and perspectives on the important recent developments in bioethanol research, the commercialization status of bioethanol production, the step-wise cost incurred in the process involved, and the possible innovations that can be utilized to reduce the cost of ethanol production.

scholarly journals The role of maize hybrids in current trends of bioethanol production

2020 ◽  
Vol 26 (2) ◽  
pp. 21-29
Author(s):  
Valentina Nikolić ◽  
Slađana Žilić ◽  
Milica Radosavljević ◽  
Marijana Simić
Keyword(s):  
Fossil Fuels ◽  
Raw Materials ◽  
Alternative Fuel ◽  
Bioethanol Production ◽  
Economic Activities ◽  
Fuel Production ◽  
Gasoline Demand ◽  
Current Trends ◽  
Production And Consumption

Bioethanol is a biofuel that is mostly used as a replacement for fossil fuels worldwide with yearly production reaching nearly 110 billion liters in 2019. Trends of producing this alternative fuel are rising and maize is considered as one of the best renewable raw materials for the production of fuel ethanol due to the high content of starch in the grain. Taking into account that Serbia is one of the most prominent maize producers in Europe, the surpluses of this crop could be directed towards bioethanol production. Even though there is no organized production and consumption of bioethanol as an automotive fuel in Serbia, the Serbian Government has recently introduced some new regulations regarding biofuels. However, due to the reduction of economic activities since the onset of COVID-19 pandemic in 2020, the global demand for crude oil has fallen sharply, negatively affecting the gasoline demand, and thus for bioethanol, which makes the future of this alternative fuel production notably uncertain.

Emerging techniques in bioethanol production: from distillation to waste valorization

2019 ◽  
Vol 21 (6) ◽  
pp. 1171-1185 ◽  
Author(s):  
Mohsen Gavahian ◽  
Paulo E. S. Munekata ◽  
Ismail Eş ◽  
Jose M. Lorenzo ◽  
Amin Mousavi Khaneghah ◽  
...  
Keyword(s):  
Environmental Impact ◽  
Ethanol Production ◽  
Fuel Consumption ◽  
Fossil Fuels ◽  
Fossil Fuel ◽  
Bioethanol Production ◽  
Waste Biomass ◽  
Waste Valorization ◽  
Fossil Fuel Consumption

Ethanol production from biomass, especially waste biomass, and the use of such ethanol as fuel can reduce fossil fuel consumption and ameliorate the hidden costs of burning fossil fuels such as its environmental impact.

scholarly journals Optimization and Assessment of Different Parameters and Utilizing Food Waste from the College Canteen for Bioethanol Production

2020 ◽  
pp. 112-120
Keyword(s):  
Food Waste ◽  
Environmental Sustainability ◽  
Fossil Fuels ◽  
Environmental Problem ◽  
Raw Materials ◽  
Toxic Waste ◽  
Bioethanol Production ◽  
Fermentation Technology ◽  
By Products ◽  
Emission Of Greenhouse Gases

Bioethanol production from canteen food wastes not only resolves pollution issues by decreasing food waste management it also meets the requirement of bio-fuels. The development of alternatives to fossil fuels like bio-fuel is appropriate and increasingly urgent with the reduction of resources of fossil fuels and the progressively worsening situation of our atmosphere and natural surroundings. The usage of biofuels is one option to decrease the emission of greenhouse gases in the nearer future. Different promising raw materials have been considered for the production of bio-ethanol throughout the last few decades. Food waste from school and college canteens are increasing environmental problem. Food waste might be considered as an edible and non-toxic waste-derived during food production or consumption system. Food waste generated in canteens is rich in carbohydrate, which comprises 65% of total solids due to its high quantity of starch. Through the use of fermentation technology, this waste can be converted to useful by-products like bio-ethanol. Therefore, the exploitation of hotel and restaurant food waste for bio-ethanol production can absolutely influence both energy and environmental sustainability.

scholarly journals Evaluation of sweet sorghum and sudangrass varieties by the viewpoint of bioethanol production

2014 ◽  
pp. 57-61
Author(s):  
János Jóvér
Keyword(s):  
Renewable Energy ◽  
Energy Consumption ◽  
Ethanol Production ◽  
Sweet Sorghum ◽  
Fossil Fuels ◽  
Production Capacity ◽  
Bioethanol Production ◽  
The European Union ◽  
Ethanol Yields ◽  
The Impact

Bioenergy and biofuels are very important in today’s energy policy. These kinds of energy resources have several advantages against fossil fuels. Environmental protection is a cardinal point of widespreading these technologies but the economic considerations are important as well. In order to improve the rate of the renewable energy in the energy consumption, the European Union settled down a program which determines a minimum ratio of renewable energy in the energy consumption for each member country of the EU. To fulfil the requirements bioenergy and biofuels should be produced. This production procedure needs adequate stocks which are commonly agricultural products.One of the promising stocks is sorghum. This plant fits for bioethanol production due to its juice content being rich in sugar. In this study six sweet sorghum hybrids, two sudangrass hybrids and a sudangrass variety have been evaluated to determine their theorical ethanol production capacity.On the score of the results of the year 2009 it can be set that sudangrasses have a lower theorical ethanol capacity than sweet sorghums have. In the case of sweet sorghums 1860.29–2615.47 l ha-1 ethanol yields had been calculated, while the sudangrasses had only 622.96–801.03 l ha-1. After that throughout three years (2011–2013) the sweet sorghum hybrids have been evaluated in order to determine the fluctuations of the ethanol production capacity caused by the impact of the years. As a result 2425.44–4043.6 l ha-1 theorical ethanol capacities have been calculated, which means that sweet sorghums can be an adequate stock to produce bioethanol.

scholarly journals Conversion of Lignocellulose for Bioethanol Production, Applied in Bio–Polyethylene Terephthalate

Polymers ◽  
2021 ◽  
Vol 13 (17) ◽  
pp. 2886
Author(s):  
Damayanti Damayanti ◽  
Didik Supriyadi ◽  
Devita Amelia ◽  
Desi Riana Saputri ◽  
Yuniar Luthfia Listya Devi ◽  
...  
Keyword(s):  
Polyethylene Terephthalate ◽  
Terephthalic Acid ◽  
Raw Materials ◽  
Raw Material ◽  
Reaction Pathways ◽  
Bioethanol Production ◽  
Separation Processes ◽  
Production Processes ◽  
Lignocellulose Conversion ◽  
Increasing Demand

The increasing demand for petroleum-based polyethylene terephthalate (PET) grows population impacts daily. A greener and more sustainable raw material, lignocellulose, is a promising replacement of petroleum-based raw materials to convert into bio-PET. This paper reviews the recent development of lignocellulose conversion into bio-PET through bioethanol reaction pathways. This review addresses lignocellulose properties, bioethanol production processes, separation processes of bioethanol, and the production of bio–terephthalic acid and bio–polyethylene terephthalate. The article also discusses the current industries that manufacture alcohol-based raw materials for bio-PET or bio-PET products. In the future, the production of bio-PET from biomass will increase due to the scarcity of petroleum-based raw materials.

scholarly journals Ethanol is a strategic raw material

2002 ◽  
Vol 56 (3) ◽  
pp. 89-104 ◽  
Author(s):  
Josip Baras ◽  
Slobodan Gacesa ◽  
Dusanka Pejin
Keyword(s):  
Ethanol Production ◽  
Raw Materials ◽  
Motor Fuel ◽  
Review Article ◽  
Raw Material ◽  
Yeast Fermentation ◽  
Bioethanol Production ◽  
Renewable Raw Material ◽  
General Data ◽  
Further Development

The first part of this review article considers general data about ethanol as an industrial product, its qualities and uses. It is emphasized that, if produced from biomass as a renewable raw material, its perspectives as a chemical raw material and energent are brilliant. Starchy grains, such as corn, must be used as the main raw materials for ethanol production. The production of bioethanol by the enzyme-catalyzed conversion of starch followed by (yeast) fermentation, distillation is the process of choice. If used as a motor fuel, anhydrous ethanol can be directly blended with gasoline or converted into an oxygenator such as ETBE. Finally, bioethanol production in Yugoslavia and the possibilities for its further development are discussed.

scholarly journals Finger Millet as a Sustainable Feedstock for Bioethanol Production

2020 ◽  
Vol 14 (1) ◽  
pp. 257-272
Author(s):  
Alla I. Yemets ◽  
Rostislav Y. Blume ◽  
Dzhamal B. Rakhmetov ◽  
Yaroslav B. Blume
Keyword(s):  
Ethanol Production ◽  
Fossil Fuels ◽  
Finger Millet ◽  
Agricultural Waste ◽  
Current Trend ◽  
Volatile Oil ◽  
Road Transport ◽  
Raw Material ◽  
Bioethanol Production ◽  
Sugar Fermentation

The current trend in volatile oil prices, global warming and environmental pollution, has encouraged major consumers worldwide to sharply increase their use of “green” fuels. Bioethanol is usually obtained from the conversion of carbon-based feedstock. Bioethanol from biomass sources is the principal fuel used as a fossil fuels’ substitute for road transport vehicles. Bioethanol is predominantly produced by the sugar fermentation process, although it can also be generated by the chemical process of reacting ethylene with steam. Finger millet (Eleusine coracana) is also known as Ragi (India), Kodo (Nepal), Uburo (Rwanda), Kurakkan (Srilanka), Bulo (Uganda), Kambale (Zambia) and Tamba (Nigeria) and can be used as an efficient source for bioethanol production. Despite all its importance, however, finger millet is still grossly undervalued both scientifically and internationally. This review observes current progress in bioethanol production from E. coracana feedstock and the effectiveness of various technological approaches for that. The main aspects of ethanol production from finger millet seeds have been considered. Seeds, which are already used for brewing, are the most obvious variant of feedstock for ethanol production from this crop. The conversion of finger millet straw and agricultural waste into bioethanol has also been reviewed. Practical results of development and testing the tentative technology of sweet sorghum and finger millet combined processing into bioethanol are described. The concept of the tentative technology of bioethanol production from carbohydrate raw material of the first and second generations is suggested.

TECHNOLOGICAL ASPECTS OF HIGH QUALITY RAW MATERIAL OBTAINING FOR PECTIN PRODUCTION

1970 ◽  
pp. 47-50
Author(s):  
I. A. Ilina ◽  
I. A. Machneva ◽  
E. S. Bakun
Keyword(s):  
Raw Materials ◽  
Thermal Characteristics ◽  
Environmental Safety ◽  
Raw Material ◽  
High Quality ◽  
Temperature Conductivity ◽  
Drying Temperature ◽  
Plant Raw Materials ◽  
Gel Forming Ability

  The article is devoted to the study of the chemical composition, physical and thermal-pfysical characteristics of damp apple pomaces and the identifying patterns of influence of drying temperature the functional composition and gel-forming ability of pectin. The research is aimed at obtaining initial data for the subsequent calculation of the main technological, hydro-mechanical, thermal, structural and economic characteristics of devices for drying the plant raw materials, ensuring the environmental safety and high quality of pectin-containing raw materials, the reducing heat and energy costs. As a result of the study of the thermal characteristics of apple pomaces, the critical points (temperature conductivity – 16.5 x 10-8 m2/s, thermal conductivity – 0.28 W/m K, heat capacity – 1627 j/(kg K)) at a humidity of 56 % are determined, which characterizing the transition from the extraction of weakly bound moisture to the extraction of moisture with strong bonds (colloidal, adsorption). It was found that the pomaces obtained from apples of late ripening have a higher content of solids (21-23 %), soluble pectin and protopectin (2.5-4.5 %). Dried pomaces obtained from apple varieties of late ripening contain up to 25 % pectin, which allow us to recommend them as a source of raw materials for the production of pectin. The optimum modes of preliminary washing of raw materials are offered, allowing to the remove the ballast substances as much as possible. It is established that when the drying temperature increases, the destructive processes are catalyzed: the strength of the pectin jelly and the uronide component and the degree of pectin esterification are reduced. The optimum drying temperature of damp apple pomaces is 80 0C, at which the quality of pectin extracted from the dried raw materials is maintained as much as possible. It is shown that the most effective for the pectin production is a fraction with a particle size of 3-5 mm, which allow us to extract up to 71 % of pectin from raw materials.

scholarly journals Biogas from Anaerobic Digestion as an Energy Vector: Current Upgrading Development

Energies ◽  
2021 ◽  
Vol 14 (10) ◽  
pp. 2742
Author(s):  
Raquel Iglesias ◽  
Raúl Muñoz ◽  
María Polanco ◽  
Israel Díaz ◽  
Ana Susmozas ◽  
...  
Keyword(s):  
Fossil Fuels ◽  
Business Models ◽  
Biogas Production ◽  
Raw Materials ◽  
Vector Current ◽  
Energy System ◽  
Transport Sector ◽  
Environmentally Sustainable ◽  
Legislative Framework ◽  
Materials Used

The present work reviews the role of biogas as advanced biofuel in the renewable energy system, summarizing the main raw materials used for biogas production and the most common technologies for biogas upgrading and delving into emerging biological methanation processes. In addition, it provides a description of current European legislative framework and the potential biomethane business models as well as the main biogas production issues to be addressed to fully deploy these upgrading technologies. Biomethane could be competitive due to negative or zero waste feedstock prices, and competitive to fossil fuels in the transport sector and power generation if upgrading technologies become cheaper and environmentally sustainable.

Sign in / Sign up

Export Citation Format

Share Document