scholarly journals Biogas Production Experimental Research by Using Sewage Sludge Loading with Biochar Additive

2017 ◽  
Vol 9 (4) ◽  
pp. 371-375 ◽  
Author(s):  
Vitalij Kolodynskij ◽  
Pranas Baltrėnas
Keyword(s):  
Sewage Sludge ◽  
Alternative Energy ◽  
Biogas Production ◽  
Co2 Concentration ◽  
Climatic Conditions ◽  
Matter Content ◽  
Plant Materials ◽  
Alternative Energy Sources ◽  
The World ◽  
The Impact

Biogas – ecological fuel, which is assigned to alternative energy sources. It should be noted, that biogas – renewable energy source, which does not require any specific climatic conditions or geographical position of a country. This power source is available and can be successfully produced and used in all countries of the world. The main components of biogas – methane CH4 and carbon monoxide CO2. This gas is formed under anaerobic conditions, when microorganisms decompose biodegradable biomass. In biological sciences biomass means a living matter content, expressed in grams per unit area. Meanwhile, in the energy sector, the definition of biomass is limited and biomass is characterized as fuel source, produced from plant materials and organic waste (food waste, wood, sludge, manure, vegetables, etc.). Currently, to produce biogas from biomass, bioreactors are used worldwide. However, in order to increase the quality and yield of biogas, in the world practice various bioload additives are used: vegetable waste, clay minerals, and a large amount of the protein-containing waste. The goal – to evaluate the impact of biochar on biogas quality and yield using sewage sludge load. It was found, that 10% biochar additive increased average CH4 concentration of 7.9%, reduced the CO2 concentration of 3–4% and totally removed H2S from biogas.

scholarly journals The impact of metal hydride material activation to storage percentage of hydrogen in this material

2020 ◽  
Vol 8 (1) ◽  
pp. 25-31
Author(s):  
Lubica Bednarova ◽  
Tomáš Brestovič ◽  
Natália Jasmisnká ◽  
Marián Lázár ◽  
Romana Dobáková ◽  
...  
Keyword(s):  
Metal Hydride ◽  
Alternative Energy ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Absorption Process ◽  
Absorption Properties ◽  
High Pressure And Temperature ◽  
Alternative Energy Sources ◽  
The World ◽  
The Impact

Currently, a lot of focus is dedicated to metal hydride alloy and options of their utilization. Mankind must solve energy problems due to constant population growth and use of non-renewable energy sources. The World resources of oil are limited and therefore the mankind must start utilizing the alternative energy sources for example hydrogen. Its known that the hydrogen can be stored by metal hydride alloys what it represents the safety way of storage with absence high pressure and temperature. The process by produce of the alloy with good absorption properties the research does not end. Some alloy absorbs the hydrogen after they produce immediately, however a lot of them need the activation for improvement or starting absorption process. Process of activation is very important for achieving the maximum capacity at moderate temperature.

scholarly journals ЭКОИННОВАЦИИ В ТРАНСПОРТЕ И ЭНЕРГЕТИКЕ КАК СПОСОБ РЕШЕНИЯ ПРОБЛЕМЫ ИЗМЕНЕНИЯ КЛИМАТА

World Science ◽  
2019 ◽  
Vol 1 (12(52)) ◽  
pp. 39-46
Author(s):  
Семак Е. А. ◽  
Зеленовский М. А.
Keyword(s):  
Economic Growth ◽  
Automotive Industry ◽  
Alternative Energy ◽  
Raw Materials ◽  
Electric Transport ◽  
Alternative Energy Sources ◽  
World Markets ◽  
The World ◽  
The Impact ◽  
Increasing Load

The analysis of the market of electric transport and renewable energy in the world and the impact of the development of these industries on export diversification and economic growth of countries was carried out. The impact of eco-innovation on world markets and international trade has been determined, experience in supporting eco-innovation industries has been systematized, and the impact of this support on economic growth and diversification of countries' exports has been studied. It has been revealed that the development of electric transport takes place on the basis of the existing automotive industry, however, for countries with small economies, especially exporters of raw materials, it becomes economically feasible to support electrification of all vehicles within the country and the development of alternative energy sources to reduce the load on the environment due to the increasing load on the grid.

scholarly journals Impact of alternative energy sources on development of neo-industrial foreign trade specialization

2021 ◽  
Vol 250 ◽  
pp. 03008
Author(s):  
Elena Andreeva ◽  
Alla Golovina ◽  
Artem Ratner
Keyword(s):  
Alternative Energy ◽  
World Economy ◽  
Developed Countries ◽  
Energy Sources ◽  
Energy Carriers ◽  
Alternative Energy Sources ◽  
The World ◽  
Energy Trade ◽  
The Impact ◽  
Development Prospects

This paper identifies the structure of the energy balance in the world and in individual countries was analyzed, trends and factors in the development of alternative types of energy carriers. The impact of their development on the volume and structure of international energy trade is substantiated. Its development prospects are presented for developed countries that are leaders in the development of alternative energy sources, and for developing countries for which the price factor is more important. Prospects of development of Russian energy exports in conditions of increasing importance of alternative types of energy carriers in the world economy and international trade are considered.

scholarly journals Effects of Climatic Conditions, Season and Environmental Factors on CO2 Concentrations in Naturally Ventilated Primary Schools in Chile

2021 ◽  
Vol 13 (8) ◽  
pp. 4139
Author(s):  
Muriel Diaz ◽  
Mario Cools ◽  
Maureen Trebilcock ◽  
Beatriz Piderit-Moreno ◽  
Shady Attia
Keyword(s):  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Primary Schools ◽  
Co2 Concentration ◽  
Building Design ◽  
Climatic Conditions ◽  
Indoor Environmental Quality ◽  
Co2 Concentrations ◽  
The Impact

Between the ages of 6 and 18, children spend between 30 and 42 h a week at school, mostly indoors, where indoor environmental quality is usually deficient and does not favor learning. The difficulty of delivering indoor air quality (IAQ) in learning facilities is related to high occupancy rates and low interaction levels with windows. In non-industrialized countries, as in the cases presented, most classrooms have no mechanical ventilation, due to energy poverty and lack of normative requirements. This fact heavily impacts the indoor air quality and students’ learning outcomes. The aim of the paper is to identify the factors that determine acceptable CO2 concentrations. Therefore, it studies air quality in free-running and naturally ventilated primary schools in Chile, aiming to identify the impact of contextual, occupant, and building design factors, using CO2 concentration as a proxy for IAQ. The monitoring of CO2, temperature, and humidity revealed that indoor air CO2 concentration is above 1400 ppm most of the time, with peaks of 5000 ppm during the day, especially in winter. The statistical analysis indicates that CO2 is dependent on climate, seasonality, and indoor temperature, while it is independent of outside temperature in heated classrooms. The odds of having acceptable concentrations of CO2 are bigger when indoor temperatures are high, and there is a need to ventilate for cooling.

scholarly journals Impact of Hotel Guests’ Trends to Recycle Food Waste to Obtain Bioenergy

2021 ◽  
Vol 13 (6) ◽  
pp. 3094
Author(s):  
Wagih Salama ◽  
Essam Abdelsalam
Keyword(s):  
Food Waste ◽  
Alternative Energy ◽  
Waste Recycling ◽  
Environmental Preservation ◽  
Alternative Energy Sources ◽  
Effective Role ◽  
Food Waste Recycling ◽  
Intentions To Participate ◽  
Hotel Managers ◽  
The Impact

Hotels face many issues related to food waste management, which is considered a serious environmental and socioeconomic issue in the 21st century. The improper disposal of food waste causes greenhouse gases emissions, consequently badly affecting the environment. This research aims to measure the impact of customer trends in changing the pattern of food waste disposal and recycling into bioenergy relating to hotel purposes and contributing to reducing hotel energy costs in Egypt. Two survey questionnaires were designed for hotel managers and guests, with 25 and 300 forms, respectively. The results indicated that hotel managers are highly willing to recycle food waste to produce bioenergy and hence play an effective role in environmental preservation. Such alternative energy sources are less expensive than conventional ones. This study revealed guests’ intentions to participate in the process of preserving the surrounding environment, as well as their preferences to stay in hotels that are practicing food waste recycling operations. Limitations can be seen in the lack of advertising for such hotels as well the high cost of staying in green and ecological hotels.

Geopolitical Factors of U.S. Energy Security System Formation

2013 ◽  
pp. 42-48
Author(s):  
E. Telegina ◽  
M. Tadzhiev
Keyword(s):  
Energy Security ◽  
Alternative Energy ◽  
Cost Effective ◽  
New Approach ◽  
Alternative Energy Sources ◽  
Global Demand ◽  
The World ◽  
The Usa ◽  
Energy Products ◽  
American Economy

According to judgemental forecasts, in the next few years the revolutionary changes in the energy complex both in the USA and in the world in general are hardly possible, considering the enormous inertia of the energetic system and high expenses coming from the infrastructure supersession, even in case of cost-effective alternatives to the existing energy commodities. At the same time, the sharpening of energy security problems resulting from the growth of a global demand on energy products leads to perceprion of necessity for a new approach to forming the global energy market, and to development of new stability and reliability strategies maintenance for assured supplies of energy products. In recent years, the USA as the biggest consumer of energy resources in the world worked out a new national strategy of energy security provision. Its main targets are: meeting the requirements of the American economy of its own resources, lowering the import-dependence level, high use of innovation technologies, significant increase of investments in alternative energy sources, as well as of resource-and energy-saving.

scholarly journals Ecotourism and Ecolodge Accommodation

2017 ◽  
Vol 7 (2) ◽  
Author(s):  
Dr.Sc. Dragan Bulatović
Keyword(s):  
Protected Areas ◽  
National Parks ◽  
Alternative Energy ◽  
Specific Form ◽  
Traditional Architecture ◽  
Specific Content ◽  
Mass Tourism ◽  
Alternative Energy Sources ◽  
The World ◽  
Unique Experience

In ecotourism, as a specific form of tourism, conscientious individuals and groups participate, who by its influence on nature are trying to reduce effects produced by so called mass tourism. Ecotourism product should be developed on the contemporary tourism trends, with full respect of local specificity which represent commitment in regard to competitive destinations. Existence of receptive factors, such as facilities for accommodation, nutrition, entertainment and recreation, represent one of the basic prerequisites for the development of any ecotourism destination. Ecotourists seek accommodation which is ecologically acceptable, modest but cozy at the same time and provides unique experience in natural surroundings. In accordance with these demands protected areas all around the world offer its visitors high quality Ecolodge facilities, which are fully submerged into nature. During their construction and management strict criteria of protection of the environment are followed with optimal waste and energy management. Montenegro has enviable spacious potential for this kind of accommodation in protected areas, especially in its five national parks, so this form of accommodation has to find its place in the future development of tourism. Designing and construction of ecotourism facilities has to be strategically planned and the fact, that it is not enough just to have attractive location but also specific content it has to offer, has to be respected. Ecolodge facilities should be designed and built in accordance with traditional architecture and surrounding materials, to influence as little as possible on the environment and to use alternative energy sources. In other words, it is necessary to provide sustainability of these facilities.

scholarly journals Modern Trends in the Development of Renewable Energy: the Experience of the EU and Leading Countries of the World

2020 ◽  
pp. 117-133
Author(s):  
L.Hr. Melnyk ◽  
O.N. Derykolenko ◽  
Yu.O. Mazin ◽  
O.I. Matsenko ◽  
V.S. Piven
Keyword(s):  
Sustainable Development ◽  
Renewable Energy ◽  
Global Economy ◽  
Alternative Energy ◽  
Power Plants ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Alternative Energy Sources ◽  
The World ◽  
The Eu

Energy security and independence is one of the key points in sustainable development. In modern conditions of rapid growth and development of technologies, more and more attention is paid to finding practical solutions for environmentally friendly and inexpensive energy production. For a long time, scientists from various fields of scientific activity around the world have been engaged in the development and use of alternative energy sources. The share of renewable energy sources in the generation of electricity around the world is growing steadily, which indicates an increase in the use of energy obtained from alternative sources, such as, for example, wind and sun. These trends testify to the desire of consumers to abandon the use of fossil energy sources and nuclear power plants as much as possible in order to ensure further sister development. Under the current conditions of the COVID-19 pandemic, the demand for electricity worldwide has decreased, however, as the study shows, this pandemic has not affected the development of renewable energy. The article analyzes modern trends in the development of renewable energy, taking into account the experience of the EU countries and leading countries of the world in this area. As a result, it was concluded that in modern conditions, to achieve sustainable development, transformation processes are needed in such an important area as energy. Various processes in the global economy, which contributed to the intensive development of alternative energy sources, served as a powerful impetus for such changes. Many countries have made significant progress in the development of renewable energy.

scholarly journals ECOTOXICOLOGICAL ASSESSMENT OF THE SOILFERTILIZED WITH SEWAGE SLUDGE

2020 ◽  
Vol 14 (1) ◽  
Author(s):  
Justyna Kujawska ◽  
Katarzyna Wójcik-Oliveira
Keyword(s):  
Heavy Metals ◽  
Sewage Sludge ◽  
Control Measure ◽  
Organic Matter Content ◽  
Environmental Safety ◽  
Matter Content ◽  
Ecotoxicological Assessment ◽  
Safety Control ◽  
The Impact ◽  
Modified Soil

Sewage sludge and its management constitute one of the most important environmental problems. The introduced the Sewage Sludge Directive 86/278/EEC advocate utilization of sewage sludge in agriculture. However, this method is limited mainly by the availability of heavy metals and pathogens. An ecotoxicological assessment of sewage sludge doses applied to soil, recommended in the Polish Regulation of the Minister of Environment of 6th February 2015 on municipial sewage sludge, was carried out. The sewage sludge was added to soil in the amounts of 3, 6, 9, and 15 Mg/ha. The produced mixtures were subjected to physicochemical and ecotoxicological tests, involving the biomass and mortality tests of Eisenia fetida earthworms. The sewage sludge had a statistically significant impact on the increase in: electrical conductivity, total exchangeable cations, organic matter content, organic carbon, nitrogen and heavy metals of the considered soil. The impact on the biomass of earthworms was different; after 7 days in the mixtures with 3 Mg/ha and 6 Mg/ha sewage sludge addition, the biomass increased approximately by 1.3-fold, in comparison to non-modified soil. At 9 Mg/ha, it reduced by 1.3-fold, whereas at 15 Mg/ha – by 16-fold, in relation to the initial value. The studies indicated that the ecotoxicological assessment of wastes may be employed as environmental safety control measure of the sewage sludge application in agriculture.

scholarly journals Alternative energy in Russia and Tatarstan: challenges and prospects

2019 ◽  
Vol 124 ◽  
pp. 05084
Author(s):  
Irek Salikhov ◽  
Vilora Avilova ◽  
Rashit Fazylov
Keyword(s):  
Solar Energy ◽  
Renewable Resources ◽  
Alternative Energy ◽  
Government Support ◽  
Energy Strategy ◽  
Advantages And Disadvantages ◽  
Alternative Energy Sources ◽  
The World ◽  
The Republic ◽  
The Government

The innovation in the energy sector involves the use of renewable resources and the transition to eco-energy, which requires a comparative analysis of the advantages and disadvantages for the economically sound choice when deciding on the energy strategy for each region. The use of alternative energy sources in Russia and the world is analyzed, which brings us to a conclusion that Russia is currently in an intermediate position in this area. Measures are proposed in orderd to strengthen the government support for Eco energy. It is held that the development of solar energy will play the largest role in the innovative development of the Republic of Tatarstan. The article is devoted to the problems of solar energy in Russia and Tatarstan respectively, as well as to the prospects for its development based on the proposed legislative, investment, financial and organizational solutions. The article provides a methodology for the comprehensive and effective adaptation of foreign experience in the field of alternative energy and a roadmap for the implementation.

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