scholarly journals Editorial Catalysts: Special Issue on “Microwave-Assisted Catalysis”

Catalysts ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 842
Author(s):  
Pilar Salagre ◽  
Yolanda Cesteros

The concept of circular economy is based on several principles, such as the use of renewable energy resources, including those obtained from the sun, wind, or water; the use of natural raw materials; the manufacturing of products avoiding the generation of wastes and pollution; keeping products and materials in use for a longer time; or giving new applications to waste [...]

2020 ◽  
Vol 12 (22) ◽  
pp. 3748
Author(s):  
Fernando Ramos Martins

The development of renewable energy sources plays a fundamental role in the transition towards a low carbon economy. Considering that renewable energy resources have an intrinsic relationship with meteorological conditions and climate patterns, methodologies based on the remote sensing of the atmosphere are fundamental sources of information to support the energy sector in planning and operation procedures. This Special Issue is intended to provide a highly recognized international forum to present recent advances in remote sensing to data acquisition required by the energy sector. After a review, a total of eleven papers were accepted for publication. The contributions focus on solar, wind, and geothermal energy resource. This editorial presents a brief overview of each contribution.


2010 ◽  
Vol 4 (3-4) ◽  
pp. 75-78
Author(s):  
Veronika Erős ◽  
Tamás Biró

In the 21st century a country’s success significantly depends on how it can solve the problems (supply safety, growing prices, climate change, etc.) induced by the application structure of the fossil energy sources with the means of energy saving, energy efficiency and the utilization of renewable energy resources. The utilization of renewable energy sources has positive effects on five key areas: environment protection, energy policies, fulfilment of EU expectations, agriculture and rural development and on the whole of the national economy. The bioenergy – beside fulfilling the national economic aims – it is putting up the value of the role of agriculture and rural development. The role of agriculture is multi-functional in the process. The agricultural sector has an important task in the area of bioenergy to ensure the proper quality and quantity of raw materials for the increase of bioenergy utilization. This also means new sales perspectives and opportunities for the producers. Above all this, the agricultural policy aims for the agriculture and the rural development segment to be the unambiguous winner of the new bioenergy sector and for most of the available profit to stay with the agricultural sector, with the rural players. For this reason encouraging the raw material production it wishes to encourage the producer their primary process and their local utilization. One of the fundamental objectives of the measures is that agriculture should go beyond the raw material production and take steps towards processing and utilization. The multifunctional role in the product chain might mean extra income and more added value for the producers and the active players in the process. The other objective is to promote the local utilization, the scatter of the environmentally friendly energy sources in rural areas, to change the energy is “lying on the ground unutilized” principle while local processing and promoting the utilization, to achieve a lower energy dependency and to optimize and disseminate cost efficient solutions. To realize all this means a great task and a huge challenge for the agricultural government as well as the rural societies and micro regions but might lead to a successful rural development. The range of the tools and measures to fulfil the aims might be very broad, from the regulating instruments to the various subsidies, coordination and dissemination tools. Part of the subsidy schemes are direct production-type of subsidies (the so called direct payments, for example the area based subsidies) and the other main forms are the investment-type subsidies which are for technology development, promotion of competitive production and local processing and for establishing a green energy industry. In the period of 2007-2013 the key elements of the development schemes were drafted in the frame of the New Hungary Rural Development Programme (ÚMVP) and the Environmental Energy Operational Program (KEOP). The available raw materials and the conditions are taken into consideration while designing the development schemes because a successful realization of a product chain means the assurance of the inputs and outputs. The starting point of determining the development direction is the principle of an operation which is sustainable and economical on the long run. In addition such developments are considered reasonable which are viable on medium and long term and bring numerous rural development, environmental and societal returns.


2019 ◽  
Vol 23 (3) ◽  
pp. 370-392
Author(s):  
Dagnija Blumberga ◽  
Bin Chen ◽  
Alise Ozarska ◽  
Zane Indzere ◽  
Dace Lauka

Abstract Overview of research papers of International conference of Environmental and Climate Technologies (CONECT 2019) illustrates the wide range of topics covered in the issue. All overviewed articles are published in the Special Issue (Part I and Part II) of the Journal of Environmental and Climate Technologies. Scientific articles are divided into 5 thematic clusters: renewable energy resources, energy efficiency, policy and policy tools, waste management and bioeconomy that charts energy, bioeconomy, climate change and environment nexus.


Author(s):  
Evgeniy Tkachenko ◽  
Sergey Ugolnikov

Biogas – one of the promising areas of generation and use of renewable energy resources. In manycountries, farmers are considered as promising sites for the production and use of biogas. Due to the largevariations in the quantity and quality of raw materials, modalities and goals of the design of biogas plantsare not formalized and is based on practical experience of the developers. It is shown that the criticalparameters in the design of biogas digesters are a source of raw materials, the amount of energy consumedby household and accommodation. Considered criteria (power, size, equipment, modes of operation, safety,etc.), which have a decisive influence on the structure and functional composition of BSU for farms. Variantsof technological schemes of individual bioreactors, as well as the characteristics of farms that should beconsidered when designing the BSU. Rationally designed BSU improves energy efficiency andenvironmentally friendly agricultural production.


2021 ◽  
pp. 0958305X2110134
Author(s):  
Sammar Z Allam

De-carbonized energy implementation involves experts to integrate inter-connected strategic objectives. Pragmatic sustainable development requires substitution of fossil-fuel energy with cleaner energy. Simultaneously, demonstrating circular economy through waste-to-energy concept is another perspective to foster renewable energy resources. Biomass energy has the highest share in the renewable energy plan of most countries. UNDP (United Nation Development Program) has established a project to provide rural areas with bio cells that intake only animal waste. In the light of rural sustainable development, as part of this research proposal, bio cells can be upgraded by local manufacturers to be fuelled with crop residue, which will reduce crop residue burn. Instead of crop residue burn in open areas, polluting the Cairo skies with a black cloud or smog and endangering urban environmental health through escalating urban heat island phenomenon, agriculture waste can be utilized as an energy source of biofuels, bio-power or even bio-by-products to substitute liquefied petroleum gas or integrated within UNDP project upgrade. The novelty of this research is demonstrating bio cells in distributed stations at fire-hotspot location to supply decarbonized energy resources for communities rehabilitated within the GIS geodesic buffer. These distributed stations support LEED-ND rating system criteria of on-site energy generation. Such demonstration at fire spots through developing brownfield zones is a sustainable opportunity for misused zones. Numerical calibration of Orduz energy potential equation developed in 2011 shows that the generated bioenergy is 531.59 PJ, equivalent to 1.48E + 11 kWh annually. Such feasible sustainable development strategy through energy resources convergence promotes self-sufficient clusters.


2019 ◽  
Vol 10 (12) ◽  
pp. 1165-1171
Author(s):  
Karl Gatterer ◽  
◽  
Salah Arafa ◽  

Reliable and affordable energy is the key for the socio-economic development in rural and desert communities worldwide. While energy can be used for consumption purposes such as Lighting, Access to Information, Comfort and Entertainment, productive use of renewable energy is the key enabler for SMEs and Economy to grow. The paper examines the complex interactions among Energy, Materials, Water, Food, Building, Employment and Environment. It also discusses the implementation of renewable energy technologies to overcome some of barriers faced by rural villages and desert communities. It shows some of the special applications and approaches used over the past few decades in energy conversion, consumption and conservation to achieve poverty reduction, social justice and sustainable development. Field experiences in Basaisa projects, Egypt showed that open free dialogues with all stakeholders, site-specific education and training, appropriate local financing systems and access to knowledge are key-elements and essential factors for achieving green economy and sustainable community development. The coming decade will see a continued expansion of knowledge about renewable energy resources and its useful applications as systems friendly to the environment and as tools for economic activities, sustainable living and growth in rural and desert communities.


2012 ◽  
Vol 2 (11) ◽  
pp. 121-124
Author(s):  
Savitha C Savitha C ◽  
◽  
Dr. S. Mahendrakumar Dr. S. Mahendrakumar

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