scholarly journals Application of Waste Glycerol as a Draw Solution for Forward Osmosis

Membranes ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 44
Author(s):  
Ewa Bernacka ◽  
Hanna Jaroszek ◽  
Marian Turek ◽  
Piotr Dydo ◽  
Dymitr Czechowicz ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Renewable Energy Sources ◽  
Forward Osmosis ◽  
Biofuel Production ◽  
Energy Sources ◽  
Linear Flow ◽  
Waste Glycerol ◽  
Draw Solution ◽  
Membrane Type ◽  
Flow Velocities

Waste glycerol generated during biofuel production accounts for ~10% of total biodiesel volume. Increasing the use of renewable energy sources, including so-called biodiesel, will significantly increase the amount of waste glycerol for disposal. One possible route for waste glycerol reuse is to use it as a draw solution in forward osmosis (FO). Glycerol solutions are particularly suited as FO draw solutions due to their high osmotic pressures. In this work, the effects of waste glycerol composition on FO draw solution osmotic pressures, as well as the effects of membrane type and linear flow velocities on FO water and reverse flux, were investigated. Those results indicated the feasibility of using waste glycerol as a draw solution in FO, allowing the reuse of significant amounts of this by-product.

RELEVANCE BIOFUEL PRODUCTION IN RUSSIA

2015 ◽  
Vol 2 (1) ◽  
pp. 46-48 ◽  
Author(s):  
Рахманкулова ◽  
R. Rakhmankulova ◽  
Красникова ◽  
D. Krasnikova
Keyword(s):  
Renewable Energy ◽  
Renewable Energy Sources ◽  
Biofuel Production ◽  
Energy Sources ◽  
Advantages And Disadvantages ◽  
Fuel Pellets

This article explores relevance of obtaining energy using alternative and renewable energy sources. Particular attention is devotes a new kind of biofuel, which has become popular in Europe - fuel pellets. Identified and justified the need to increase the production of pellet fuel in Russia, gives concrete examples, which are supported by figures. Moreover, the authors expound the advantages and disadvantages of biofuel production in Russia

scholarly journals Role of Escherichia coli in Biofuel Production

2016 ◽  
Vol 9 ◽  
pp. MBI.S10878 ◽  
Author(s):  
Veerendra Koppolu ◽  
Veneela KR Vasigala
Keyword(s):  
Escherichia Coli ◽  
Renewable Energy ◽  
Renewable Energy Sources ◽  
Carbon Sources ◽  
Volumetric Productivity ◽  
Biofuel Production ◽  
Energy Sources ◽  
E Coli ◽  
High Volumetric Productivity

Increased energy consumption coupled with depleting petroleum reserves and increased greenhouse gas emissions have renewed our interest in generating fuels from renewable energy sources via microbial fermentation. Central to this problem is the choice of microorganism that catalyzes the production of fuels at high volumetric productivity and yield from cheap and abundantly available renewable energy sources. Microorganisms that are metabolically engineered to redirect renewable carbon sources into desired fuel products are contemplated as best choices to obtain high volumetric productivity and yield. Considering the availability of vast knowledge in genomic and metabolic fronts, Escherichia coli is regarded as a primary choice for the production of biofuels. Here, we reviewed the microbial production of liquid biofuels that have the potential to be used either alone or in combination with the present-day fuels. We specifically highlighted the metabolic engineering and synthetic biology approaches used to improve the production of biofuels from E. coli over the past few years. We also discussed the challenges that still exist for the biofuel production from E. coli and their possible solutions.

scholarly journals Social Aspects of Energy Production from Renewable Sources

2021 ◽  
Vol 16 (1) ◽  
pp. 61-66
Author(s):  
Wojciech Czekała ◽  
◽  
Filip Tarkowski ◽  
Patrycja Pochwatka ◽  
◽  
...  
Keyword(s):  
Renewable Energy ◽  
Energy Production ◽  
Fossil Fuels ◽  
Renewable Energy Sources ◽  
Biofuel Production ◽  
Social Aspects ◽  
Energy Sources ◽  
The Social ◽  
The Impact ◽  
Positive Effect

The increased demand for energy determines the need to search for its next sources. One of them could be renewable energy sources, whose importance is increasing, among others, due to the limited resources of fossil fuels. In addition, renewable energy production has many benefits, mainly environmental and economic. Moreover, the social aspects associated with it cannot be ignored. The aim of this work was to discuss selected social benefits resulting from the production of renewable energy. Among the most important advantages of renewable energy sources is their local aspect, since energy production solves many regional problems, mainly related to its transport. The issue of energy security is also essential. In the case of biofuel production, the possibility of involving waste in energy production is extremely beneficial. The use of renewable energy itself directly affects the improvement of the environment, which in turn has a positive effect on people. Nowadays, sustainable development is one of the most critical challenges of humanity. These activities are closely related to the use of renewable energy sources. It is important to pay attention not only to subjects related to the environmental and economic aspects but also the impact of renewable energy sources on society.

scholarly journals On the issue of biofuel production in the conditions of forests of the steppe and forest-steppe zones of the Volga region

2021 ◽  
Vol 1 ◽  
pp. 41-48
Author(s):  
Sergey Vladimirovich Fokin ◽  
Keyword(s):  
Renewable Energy ◽  
Fossil Fuels ◽  
Renewable Energy Sources ◽  
Processing Technology ◽  
Wood Waste ◽  
Biofuel Production ◽  
Volga Region ◽  
Energy Sources ◽  
Forest Steppe ◽  
Grinding Machines

The need for energy for the needs of the economy is constantly increasing, which leads to an increase in production and volumes of burning fossil fuels. Modern processing technology of renewable energy sources, including wood, allow you to use it for energy. One of the perspective directions of processing wood waste is their grinding machines on rubitelnymi felling area.

scholarly journals Microalgae as Sustainable Renewable Energy Feedstock for Biofuel Production

2015 ◽  
Vol 2015 ◽  
pp. 1-13 ◽  
Author(s):  
Srikanth Reddy Medipally ◽  
Fatimah Md. Yusoff ◽  
Sanjoy Banerjee ◽  
M. Shariff
Keyword(s):  
Renewable Energy ◽  
Low Cost ◽  
Renewable Energy Sources ◽  
Lipid Production ◽  
Biomass Concentration ◽  
Commercial Production ◽  
Biodiesel Production ◽  
Biofuel Production ◽  
Energy Sources ◽  
Sustainable Renewable Energy

The world energy crisis and increased greenhouse gas emissions have driven the search for alternative and environmentally friendly renewable energy sources. According to life cycle analysis, microalgae biofuel is identified as one of the major renewable energy sources for sustainable development, with potential to replace the fossil-based fuels. Microalgae biofuel was devoid of the major drawbacks associated with oil crops and lignocelluloses-based biofuels. Algae-based biofuels are technically and economically viable and cost competitive, require no additional lands, require minimal water use, and mitigate atmospheric CO2. However, commercial production of microalgae biodiesel is still not feasible due to the low biomass concentration and costly downstream processes. The viability of microalgae biodiesel production can be achieved by designing advanced photobioreactors, developing low cost technologies for biomass harvesting, drying, and oil extraction. Commercial production can also be accomplished by improving the genetic engineering strategies to control environmental stress conditions and by engineering metabolic pathways for high lipid production. In addition, new emerging technologies such as algal-bacterial interactions for enhancement of microalgae growth and lipid production are also explored. This review focuses mainly on the problems encountered in the commercial production of microalgae biofuels and the possible techniques to overcome these difficulties.

Renewable Energy Sources

IEE Review ◽  
1991 ◽  
Vol 37 (4) ◽  
pp. 152
Author(s):  
Kenneth Spring
Keyword(s):  
Renewable Energy ◽  
Renewable Energy Sources ◽  
Energy Sources

Power Projects and Covid-19: A Practical Analysis of the Relevance of Force Majeure Clauses under the Standardised Power Purchase and Implementation Agreements of Uganda

2020 ◽  
Vol 1 (2) ◽  
pp. 189-193
Author(s):  
Aisha Naiga ◽  
Loyola Rwabose Karobwa
Keyword(s):  
Renewable Energy ◽  
Renewable Energy Sources ◽  
Clean Energy ◽  
The State ◽  
Energy Sources ◽  
Policy Goals ◽  
Force Majeure ◽  
Practical Analysis ◽  
Energy Justice

Over 90% of Uganda's power is generated from renewable sources. Standardised Implementation Agreements and Power Purchase Agreements create a long-term relationship between Generating Companies and the state-owned off-taker guaranteed by Government. The COVID-19 pandemic and measures to curb the spread of the virus have triggered the scrutiny and application of force majeure (FM) clauses in these agreements. This article reviews the FM clauses and considers their relevance. The authors submit that FM clauses are a useful commercial tool for achieving energy justice by ensuring the continuity of the project, despite the dire effects of the pandemic. Proposals are made for practical considerations for a post-COVID-19 future which provides the continued pursuit of policy goals of promoting renewable energy sources and increasing access to clean energy, thus accelerating just energy transitions.

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