scholarly journals A short look at microbial producers of biobutanol: New trends, potentialities and limitations

2020 ◽  
Vol 24 (3-4) ◽  
pp. 100-104
Author(s):  
Dorota Kregiel
Keyword(s):  
Alternative Energy ◽  
Fermentation Process ◽  
Recent Progress ◽  
New Technologies ◽  
Waste Materials ◽  
Microbial Populations ◽  
Energy Sources ◽  
Butanol Production ◽  
Alternative Energy Sources ◽  
Microbial Strains

Nowadays, the energy crisis, climate change and greenhouse effect have created a strong demand for the development of alternative energy sources. Researchers have made an attempt to produce biobutanol from various second-generation feedstocks with new microbial strains and new technologies. This paper presents the recent progress on efficient butanol production using various biomass sources and "designed" microorganisms. The advances in the butanol fermentation process, such as the use of numerous waste materials, improved strains and co-cultivation of mixed microbial populations are of particular interest in this review.

scholarly journals Biomass availability in eastern Ontario for bioenergy and wood pellet initiatives

2011 ◽  
Vol 87 (1) ◽  
pp. 33-41 ◽  
Author(s):  
Rachele Levin ◽  
Sally Krigstin ◽  
Suzanne Wetzel
Keyword(s):  
Rural Economy ◽  
Alternative Energy ◽  
New Technologies ◽  
Energy Sources ◽  
Wood Biomass ◽  
Wood Pellet ◽  
Alternative Energy Sources ◽  
Eastern Ontario ◽  
Biomass Availability ◽  
The Right

Interest in wood-based bioenergy and pelletization is growing in Ontario, and the province is taking steps to encouragethese new technologies. A survey of eastern Ontario sawmills was conducted to assess residue production and availabilityfor bioenergy and pellet applications. Approximately 259 000 oven dry tonnes of sawmill residues are produced annuallyin eastern Ontario, but most of this fibre is absorbed by existing markets and would not be available for bioenergy orpellet initiatives. However, another source of wood fibre exists that is both abundant and unutilized: traditional pulpwood.While establishment costs of bioenergy and pellet facilities are high, pulpwood is locally available in large quantities.Given the right incentives, bioenergy and pelletization could provide alternative energy sources and support the forestindustry and rural economy. Key words: sawmill residue, wood biomass, bioenergy, pellets, eastern Ontario

scholarly journals Pemanfaatan Limbah Gula untuk Pembuatan Bioethanol yang dipengaruhi oleh Komposisi Khamir pada Proses Fermentasi

2020 ◽  
Vol 5 (2) ◽  
pp. 74
Author(s):  
Sinar Perbawani Abrina Anggraini ◽  
Susy Yuniningsih
Keyword(s):  
Alternative Energy ◽  
Fermentation Process ◽  
Sugar Content ◽  
Sugar Concentration ◽  
Energy Sources ◽  
Water Density ◽  
Yeast Saccharomyces Cerevisiae ◽  
Alternative Energy Sources ◽  
The Difference ◽  
The Impact

The increasing needs of people who are not balanced with fuel supplies at the national and world level are bringing about the impact of the energy crisis. The reliance only on renewable energy makes people have to look for alternative energy sources. Bioethanol is a type of fuel that can replace fuel. The bioethanol process is fermented from biomass material with the help of microorganisms. This study aims to know the performance of yeast composition in the fermentation process against ethanol quality. The ingredients used are molasses with a sugar content of 54% as much as 8 L. Molasses is mixed with NPK, Urea, and the yeast Saccharomyces Cerevisiae. Khamir's composition varies by 8, 12, 16, 20, 24, 28, and 32 grams. To test ethanol levels on each variable by measuring the difference in water density and ethanol using a pycnometer. This study's result is the highest ethanol quality obtained at a sugar concentration of 12 grams (0.2%), at 5.6%. The lowest ethanol quality is obtained at a sugar concentration of 32 grams (0.4%) i.e., 3.29%, while in yeast composition 8, 16, 20, 24, 28 grams of ethanol quality continued to decrease consecutively to 3.6%, 5.4%, 5.3%, 5.2%, and 5.1%. 

scholarly journals Energy potentials worldwide and their importance in cellulose and paper industry

2008 ◽  
Vol 62 (4) ◽  
pp. 223-232
Author(s):  
Vladimir Valent ◽  
Milorad Krgovic ◽  
Marina Krsikapa ◽  
Srecko Nikolic
Keyword(s):  
Alternative Energy ◽  
Energy Use ◽  
New Technologies ◽  
Paper Industry ◽  
Electric Energy ◽  
Energy Sources ◽  
Alternative Energy Sources

The available worldwide energy sources are presented. The applications of energy over the next period are considered in this study. The applications and the importance of alternative energy sources is reviewed. The emphasis is put on the necessity of developing new technologies and rationalization of energy use. The data regarding heat and electric energy, along with water applications in cellulose and paper industry are also given.

scholarly journals TECHNOLOGICAL FEATURES OF THE BIONIC ARCHITECTURE

2019 ◽  
Vol 4 (3) ◽  
pp. 69-77
Author(s):  
Жанна Уморина ◽  
Zhanna Umorina
Keyword(s):  
Natural Resources ◽  
Resource Use ◽  
Technological Progress ◽  
Alternative Energy ◽  
New Technologies ◽  
Ecological Approach ◽  
Energy Sources ◽  
Ecological Balance ◽  
Alternative Energy Sources ◽  
Design Alternative

The development of scientific and technological progress in architecture gave the rise to a new phenomenon – the bionic architecture. Bionic architecture is based on already established methods of design in the framework of the "green standards"; it contributes to the improvement of the ecological balance of the environment and preservation of natural resources. The use of new technologies of construction, fabrication, design, alternative energy sources allowed to create this innovative style, which is essentially a branch of the ecological approach. The article reveals main achievements in the field of application of technical devices to increase the efficiency of resource use in architectural objects and their impact on morphogenesis.

scholarly journals Regional Disparities and Features of Solar and Wind Energy Potential of Bulgaria

2021 ◽  
Vol 1 (5) ◽  
pp. 7-11
Author(s):  
Georgi Belev
Keyword(s):  
Renewable Energy ◽  
Wind Energy ◽  
Alternative Energy ◽  
New Technologies ◽  
Global Climate ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Energy Potential ◽  
Alternative Energy Sources ◽  
Wind Energy Potential

Global climate fluctuations and projections of deteriorating sustainable human development since the beginning of the 21st century have highlighted the need to look for alternative energy sources to carbon fuels. The utilization of solar and wind energy has become a challenge for engineers and technologists to develop new technologies for more efficient development of renewable energy sources. The purpose of this paper is to present the territorial features in the utilization of renewable energy sources – solar radiation and wind in Bulgaria. The study focuses on the regional features of the solar- and wind energy potential. Based on statistical data, the utilization of the RES potential is considered through a review of the installed capacities

New technologies will support steady demand for silver

2018 ◽  
Keyword(s):  
Solar Cells ◽  
Alternative Energy ◽  
New Technologies ◽  
Solar Panel ◽  
Energy Sources ◽  
Content Type ◽  
Option Trading ◽  
Alternative Energy Sources ◽  
India And China ◽  
Silver Exchange

Subject Global silver market dynamics. Significance The price of most commodities has risen since 2015 but not that of silver. Indeed, the price has barely changed in two years and has fallen nearly 3% this year. Investor interest in exchange traded products (ETPs) in 2016 was not sustained in 2017 but while low volatility discouraged investors, manufacturing demand rose. Strong demand from the solar panel industry is surprising sceptics. Impacts After two years of unusually strong zinc prices, large projects will come online, increasing the amount of silver mined as a by-product. US tariffs on imported solar cells will boost demand for alternative energy sources, eventually hurting silver consumption. The largest silver exchange, the Chicago Mercantile Exchange, will offer option trading in smaller amounts, matching traders’ preferences. Increased silver use in light karat gold jewellery in India and China will support demand for the metal.

POLAND’S ENERGY SECURITY IN THE CONTEXT OF EXPLORATION FOR ALTERNATIVE ENERGY SOURCES

2011 ◽  
Vol 162 (4) ◽  
pp. 48-60
Author(s):  
Rafał SZYMCZYK
Keyword(s):  
Energy Security ◽  
Alternative Energy ◽  
New Technologies ◽  
Energy Sector ◽  
Current Situation ◽  
Energy Sources ◽  
Future Prospects ◽  
Alternative Energy Sources ◽  
Energy Independence ◽  
Fuel And Energy Sector

This article outlines the issues of Poland’s energy security in the context of the country's energy independence from external suppliers through the diversification of supply sources, the use of national sources and the search for alternative energy sources and new technologies. It also presents the current situation of the fuel and energy sector, future prospects and commitments resulting from the European Union’s guidelines.

Regional Disparities and Features of Solar and Wind Energy Potential of Bulgaria

2021 ◽  
Vol 2 (1) ◽  
pp. 7-11
Author(s):  
Georgi Belev
Keyword(s):  
Renewable Energy ◽  
Wind Energy ◽  
Alternative Energy ◽  
New Technologies ◽  
Global Climate ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Energy Potential ◽  
Alternative Energy Sources ◽  
Wind Energy Potential

Global climate fluctuations and projections of deteriorating sustainable human development since the beginning of the 21st century have highlighted the need to look for alternative energy sources to carbon fuels. The utilization of solar and wind energy has become a challenge for engineers and technologists to develop new technologies for more efficient development of renewable energy sources. The purpose of this paper is to present the territorial features in the utilization of renewable energy sources – solar radiation and wind in Bulgaria. The study focuses on the regional features of the solar- and wind energy potential. Based on statistical data, the utilization of the RES potential is considered through a review of the installed capacities.

scholarly journals Penggunaan Bioetanol Sebagai Alternatif Campuran Bahan Bakar Pada Mesin Otto

2021 ◽  
Vol 1 (2) ◽  
pp. 54
Author(s):  
Agus Hariono ◽  
Bambang Hertomo ◽  
Kasijanto Kasijanto
Keyword(s):  
Renewable Energy ◽  
Fuel Consumption ◽  
Alternative Energy ◽  
Fermentation Process ◽  
Engine Speed ◽  
Free Variable ◽  
Energy Sources ◽  
Testing Method ◽  
Alternative Energy Sources ◽  
Motorized Vehicles

Abstrak Ketersediaan bahan bakar fosil untuk penggerak kendaaran bermotor semakin menipis, akibat bertambah kendaraan yang beroperasi di jalan raya, sehingga perlu pemikiran energy terbarukan lai sebagai alternatif penggantinya,  Alternatif tumbuhan yaitu singkong sebagai sumber energi sebagai penggantinya perlu pemikiran lanjut. Bioethanol dari singkong ini dilakukan dengan proses fermentasu selama 5 hari dengan dicampu ragi, Tujuan menentukan daya dan torsi terbesar serta sfc terkecil saat menggunakan campuran bioetanol E10, E15 dan E20 dengan pertalite. Metode pengujian daya dan torsi sesuai standar ISO 1585 untuk mendapatkann data, selanjutnya diolah menggunakan statistik. Variabel tetapnya bioetanol (E10, E15 dan E20). Variabel berubahnya daya, torsi, konsumsi bahan bakar spesifik (sfc) dan putaran mesin. Hasil daya terbesar saat menggunakan E10 sebesar 6,67hP dan torsinya 6,58hP sedang untuk E15 dayanya sebesar 6,10hP torsinya 6,22Nm serta untuk E-20 dayanya 6,18hP torisnya 6,36Nm. Sfc terkecil untuk E10 sebesar 0,0120kg/hP,jam dan untuk E15 sebesar 0,0232kg/hP.jam serta untuk E20 sebesar 0,202kg/hp.jam. Kata kunci: bioetanol, daya, konsumsi bahan bakar Abstract The availability of traditional fuels for driving motorized vehicles is running low, due to the increasing number of vehicles operating on the highway, so it is necessary to think about other renewable energy as an alternative replacement. Namely cassava plants as an alternative energy sources as a replacement needs to be thought further. This bioethanol from cassava is obtained through a fermentation process for 5 days mixed with yeast. The aim is to determine the biggest power and torque as well as the smallest SFC when pertalite is mixed with bioethanol E10, E15 and E20. The power and torque testing method is according to ISO 1585 standard to obtain data, then it is processed statistically. The fixed variable is bioethanol (E10, E15 and E20). Free variable is changes in power, torque, specific fuel consumption (SFC) and engine speed. The biggest power is 6.67hP reached when using the E10 while the torque is 6.58hP, when using the E15 the power is 6.10hP and the torque is 6.22Nm then for the E-20 the power is 6.18hP the torque is 6.36Nm. The smallest SFC is 0.0120kg / Hp.hour for E10 and 0.0232kg / hP.hours for E15 then 0.202kg / hp.h for E20. Keywords : bioethanol,  power,  fuel consumption

scholarly journals «GREEN» ENERGY: FEATURES AND PROSPECTS OF DEVELOPMENT IN UKRAINE

2021 ◽  
Author(s):  
Natalka Boichuk ◽  
Mariia Kotsiubailo
Keyword(s):  
Energy Balance ◽  
Alternative Energy ◽  
Power Plants ◽  
New Technologies ◽  
Solar Power ◽  
Renewable Energy Sources ◽  
Clean Energy ◽  
Green Energy ◽  
Energy Sources ◽  
Alternative Energy Sources

The article is devoted to the study of the development of «green» energy in Ukraine. Extraction of non-renewable resources reduces our reserves, and using in the process of production and consumption leads to global warming. Further development of «green» energy will reduce the problems associated with environmental pollution and ensure consumer demand for clean energy at low prices. The article analyzes in details the current state of «green» energy of the country, considers promising opportunities for investment in the industry by Ukrainian and foreign entrepreneurs, which will create and implement new technologies in production, modernize obsolete enterprises. The main problems of using alternative energy sources are highlighted, the prospects for the development of «green» energy are determined, the possibilities and expediency of the transition to ecological types of energy are considered, taking into account the features of the country's economy. The article considers and analyzes the energy balance of the state, which is significantly dominated by the use of nuclear fuel, coal and gas. The use of modern and advanced technologies in the use of renewable energy sources will increase the share of clean energy in the energy balance of the country. The chronology of development of solar power plants in Ukraine is considered. It is noted that due to scientific and technological progress, reduction of prices for solar power plant equipment, «green» tariff capacity of generating alternative energy facilities will continue to grow. The volumes of energy production, which is produced with the help of renewable sources, are analyzed, the number of enterprises that receive income from the sale of electricity at the «green» tariff is considered. A comparative analysis of the size of the «green» tariff in Ukraine and European countries, the prospects for solving existing problems, proposed measures to fully disclose the potential use of alternative energy sources. The positive aspects of the use of alternative energy are analyzed; the role of the country in the process of implementing an effective energy strategy, creating an electricity market and the country's transition to a carbon-neutral economy is analyzed.

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