scholarly journals The Role of Solar Energy (UV-VIS-NIR) as an Assistant for Sulfide Minerals Leaching and Its Potential Application for Metal Extraction

Minerals ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 828
Author(s):  
Orlando Yepsen ◽  
Eugenia Araneda ◽  
Rodrigo Yepsen ◽  
Humberto Estay
Keyword(s):  
Energy Consumption ◽  
Solar Energy ◽  
Potential Application ◽  
Near Infrared ◽  
Renewable Energy Sources ◽  
Sulfide Minerals ◽  
Metal Extraction ◽  
Future Application ◽  
Processing Route

The mining industry is facing emerging challenges as a result of the increase in energy consumption and environmental demands. These facts have promoted the use of renewable energy sources, such as wind, geothermal and, mainly, solar energy. This paper discusses the role of solar energy (UV-VIS-NIR) in leaching processes, evaluating its potential application in metal extraction from sulfide minerals, based on photochemical mechanisms that promote the regeneration of ferric iron or the so called ferrous iron cycling. The present paper discusses the possibility that ultraviolet, visible light and near infrared irradiation (e.g., sunlight provided) can assist the leaching processes in two main ways: by the oxidation of sulfide minerals through in-situ generated Fenton-like reactions, and by the photochemical activation of semiconductor minerals that contain transition metals (Fe, Cu, and Cr, among others). Thus, this paper provides theoretical support to move towards the future application of photoleaching, which consist of a leaching process assisted by UV, VIS, and NIR irradiation. This technology can be considered a promising mineral processing route, using direct photochemical solar energy that can reduce the energy consumption (electricity, fuels) and the environmental impact, opening an opportunity for an alternative method of metal extraction from sulfide ores.

scholarly journals Solar Energy Data Analytics: PV Deployment and Land Use

Energies ◽  
2020 ◽  
Vol 13 (2) ◽  
pp. 417 ◽  
Author(s):  
Francesco Mancini ◽  
Benedetto Nastasi
Keyword(s):  
Solar Energy ◽  
Renewable Energy Sources ◽  
Electricity Consumption ◽  
Electricity Production ◽  
Renewable Electricity ◽  
Building Integrated Photovoltaics ◽  
Electricity Mix ◽  
Final Energy Consumption ◽  
Policy Scenarios

EU targets for sustainable development call for strong changes in the current energy systems as well as committed protection of environmental resources. This target conflicts if a policy is not going to promote the compatible solutions to both the issues. This is the case of the additional renewable energy sources to be exploited for increasing the share in the electricity mix and in the gross final energy consumption. Solar energy is, currently, the cheapest solution in Southern European Countries, like Italy. In this paper, thanks to the availability of three open databases provided by National Institutions, the authors compared the historic trends and policy scenarios for soil consumption, electricity consumption, and renewable electricity production to check correlations. The provincial scale was chosen as resolution of the analysis. The deviations from the policy scenarios was then addressed to identify the demand for policy recommendations and pathways to promote in order to achieve the target for renewable electricity share as well as the reduction in soli consumption trend in 2030. The role of renewables integrated in the existing contexts, such as building integrated photovoltaics, is considered a key driver for solving this issue.

Technical Analysis on Energy Consumption of Chinese Household (1990-2009)

2013 ◽  
Vol 291-294 ◽  
pp. 1286-1289
Author(s):  
Yi Qin
Keyword(s):  
Renewable Energy ◽  
Energy Consumption ◽  
Electricity Generation ◽  
Renewable Energy Sources ◽  
Energy Development ◽  
Renewable Energy Consumption ◽  
Renewable Energy Development ◽  
Structural Demand ◽  
The Cost

Renewable energy sources have increased their share on electricity generation of China, in this paper assesses the role of both the amount and share of renewable energy consumption in economic welfare using production functions. The results of the paper show that the cost, structural demand, accounting mechanism and policy reasons of renewable energy development are interpreted.

scholarly journals Solar energy and sustainable development

2006 ◽  
Vol 4 (1) ◽  
pp. 113-119 ◽  
Author(s):  
T.M. Pavlovic ◽  
J.M. Radosavljevic ◽  
Z.T. Pavlovic ◽  
Lj.T. Kostic
Keyword(s):  
Sustainable Development ◽  
Renewable Energy ◽  
Energy Consumption ◽  
Solar Energy ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Agenda 21 ◽  
The Sustainable Development ◽  
Development Agenda ◽  
The World

In this paper attention is drawn to the energy consumption in the world solar energy, sustainable development, agenda 21 and the influence of the renewable energy sources and solar energy on the sustainable development.

scholarly journals CLIMATE POLICY OF EUROPEAN COUNTRIES

2021 ◽  
Vol 2 (4) ◽  
pp. 270-275
Author(s):  
Anna V. Komarova
Keyword(s):  
Renewable Energy ◽  
Energy Consumption ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Climate Policy ◽  
General Trend ◽  
Renewable Energy Sources ◽  
European Countries ◽  
Energy Sources

The article examines the structure of modern documents of European countries in the field of climate policy, including changes in recent years. Based on the results of the analysis of the dynamics and structure of energy consumption in the European macro-region, it was revealed that against the background of the general trend of decreasing energy consumption, there is an increase in the role of renewable energy sources. When comparing the indicators of the share of renewable energy sources in energy consumption and targets for reducing greenhouse gas emissions for individual countries, significant differences were revealed for individual countries of the European macro-region.

scholarly journals Effective Management of Energy Consumption during the COVID-19 Pandemic: The Role of ICT Solutions

Energies ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 893
Author(s):  
Wadim Strielkowski ◽  
Irina Firsova ◽  
Inna Lukashenko ◽  
Jurgita Raudeliūnienė ◽  
Manuela Tvaronavičienė
Keyword(s):  
Energy Consumption ◽  
Energy Balance ◽  
Management Practices ◽  
Renewable Energy Sources ◽  
Electricity Consumption ◽  
Energy Sources ◽  
Energy Prices ◽  
Effective Management ◽  
The Way

This research tackles effective and functional management practices in energy consumption using advanced technological solutions to mitigate unexpected events. This study specifically focuses on the recent COVID-19 pandemic that led to a reduction in energy consumption and therefore meddled with the project management’s status quo for the energy sources. Moreover, this research analyzes the role of information and communication technology (ICT) solutions in energy management before and after the recent coronavirus pandemic turmoil. This study also examined the role and place of sustainable energy resources in the effective management of energy consumption during the COVID-19 pandemic. The main purpose of this research is to demonstrate how the recent coronavirus pandemic affected energy consumption and energy prices in many countries and how it paved the way for the new ICT in managing energy consumption. This study elaborated a model to show how these changes evolved in selected European Union (EU) Member States. It turns out that adjusted electricity consumption, as well as the average daily spot electricity prices for the baseload power in the EU countries, declined, and this trend is likely to continue in the next years to come. Due to the COVID-19 pandemic, substantial changes in the economy led to reduced office space usage, cutting commuting and business trips, and bringing commercial travel almost to a halt, further shifting the energy balance towards renewable energy sources (RES). Besides, it becomes apparent that ICT solutions used in maintaining and superintending the energy balance are gaining popularity and wide recognition worldwide and will help pave the way towards modern and smart high-renewables grids.

scholarly journals The Knowledge of People About the Use of Renewable Energy and Environmental Awareness in Their Area, Irbid Governorate as a Case Study

2021 ◽  
Vol 16 (2) ◽  
pp. 365-371
Author(s):  
Samia Ayyoub Salim Ayyoub ◽  
Nuha Mahmoud Mesleh Radaydeh
Keyword(s):  
Renewable Energy ◽  
Energy Consumption ◽  
Solar Energy ◽  
Large Scale ◽  
Renewable Energy Sources ◽  
Photovoltaic Cells ◽  
Renewable Resource ◽  
Energy System ◽  
The North ◽  
The Government

In the global effort to curb energy consumption and promote a sustainable lifestyle for our societies, we must strive to lower our energy needs in all aspects of our lives. One of the biggest contributors to our energy requirements are the buildings we spend most of our time inside. Buildings’ energy consumption can take many forms, such as, air conditioning, heating, ventilation, and lighting systems in order to create a comfortable environment for the users. One way of reducing buildings’ energy consumption is the use of renewable resource for energy. The main aim of this research is to measure and assess the public perceptions, knowledge and awareness of the concept of renewable energy, with specific regards to the use of solar photovoltaic cells, as well as investigate the desire to spend on the installation of renewable energy sources. Data was collected through a survey questionnaire applied in Irbid governorate in the north of Jordan. The statistical SPSS program was used to analyze closed-ended questionnaires and obtain numerical results based on arithmetical averages and percentages. The results show people are adequately aware of the benefits of renewable energy and most would like to have photovoltaic cells installed. However, 54.35% of the study sample live in apartments and do not have the space for the installation. 70.1% are open to the idea of sharing the solar energy system with their neighbors. 50% thought that the photovoltaic cells affected the aesthetics of the architecture style of the buildings especially the more traditional styles. It is concluded that the government needs to build a large-scale solar energy project to sustainably produce electricity instead of relying on individuals who generally lack the ability or the space for such systems, taking in note that the general public supports such concepts.

scholarly journals The possibility of integrating solar energy technologies (passive and active systems) in the residential sector for the purpose of economy and rationalization of energy consumption and protect the environment

2021 ◽  
Vol 2 (1) ◽  
Author(s):  
M. M Belhaj ◽  
M. M Bara ◽  
M. M Alwerfaly
Keyword(s):  
Energy Consumption ◽  
Solar Energy ◽  
Architectural Design ◽  
Residential Buildings ◽  
Renewable Energy Sources ◽  
Research Work ◽  
Energy Sources ◽  
Total Energy Consumption ◽  
Environment Friendly ◽  
Green Architecture

  Humanity has realized in the modern age that the conventional energy resources are being depleted, and hence the research work worldwide has been directed towards ?nding alternative and renewable energy sources. Solar energy has proved its efficiency and ?exibility in its investment and utilization in all ?elds and levels. Most countries have given their great interest in its use as a clean, environment friendly energy, in addition to its effective contribution in conserving local consumption of conventional energy, as well as its being the energy of the future, as it does not run out and its price does not rise with the rising prices of the other energy sources. Based on the importance of housing to mankind in the availability of suitable, comfortable and economical house for the residents, and as the percentage of the domestic energy consumption is around 30 % of the total energy consumption in Libya, as an example, most of this consumption is in heating. cooling and water heating, many countries and energy concerned establishments have introduced research programs to develop ways and means of energy conservation calling for considering energy consumption patterns and means of its conservation in buildings in general and in residential buildings in particular. This paper deals with studying and analyzing effective elements of energy consumption in residential buildings, starting from the architectural design up to the used appliances. The paper also considers chances of partial or total combination of solar energy systems and its use to solve the energy consumption problem through solar energy, or what is called green architecture, energy conservative buildings or environment friendly buildings. The paper presents a conclusion outlining environment suitable building in Libya and concludes with some recommendations

scholarly journals Feasibility of Harvesting Solar Energy for Self-Powered Environmental Wireless Sensor Nodes

Electronics ◽  
2020 ◽  
Vol 9 (12) ◽  
pp. 2058
Author(s):  
Yuyang Li ◽  
Ehab A. Hamed ◽  
Xincheng Zhang ◽  
Daniel Luna ◽  
Jeen-Shang Lin ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Energy Harvesting ◽  
Solar Energy ◽  
Renewable Energy Sources ◽  
Average Energy ◽  
Vital Role ◽  
Sensor Nodes ◽  
Wireless Sensor ◽  
Self Powered ◽  
Average Energy Consumption

Energy harvesting has a vital role in building reliable Environmental Wireless Sensor Networks (EWSNs), without needing to replace a discharged battery. Solar energy is one of the main renewable energy sources that can be used to efficiently charge a battery. This paper introduces two solar energy harvesters and their power measurements at different light conditions in order to charge rechargeable AA batteries powering EWSN nodes. The first harvester is a primitive energy harvesting circuit that is built using elementary off-shelf components, while the second harvester is based on a commercial boost converter chip. To prove the effectiveness of harvesting solar energy, five EWSN nodes were distributed at a nature reserve (the Audubon Society of Western Pennsylvania, USA) and the sunlight at their locations was recorded for more than five months. For each recorded illumination, the corresponding harvested energy has been estimated and compared with the average energy consumption of the EWSN with the most power consumption. The results show that the daily harvested energy effectively compensates for the energy consumption of the EWSN nodes, and the battery charge capacity of 295 mAh can reliably support their daily dynamic energy consumption.

scholarly journals Z Source Inverter Topologies-A Survey

2017 ◽  
Vol 6 (1) ◽  
pp. 1-12
Author(s):  
V. Saravanan ◽  
M. Aravindan ◽  
V. Balaji ◽  
M. Arumugam
Keyword(s):  
Power Generation ◽  
Renewable Energy ◽  
Energy Consumption ◽  
Solar Energy ◽  
Alternative Energy ◽  
Power Converters ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Alternative Energy Sources ◽  
Converter Topologies

Need for alternative energy sources to satisfy the rising demand in energy consumption elicited the research in the area of power converters/inverters. An increasing interest of using Z source inverter/converter in power generation involving renewable energy sources like wind and solar energy for both off grid and grid tied schemes were originated from 2003. This paper surveys the literature of Z source inverters/converter topologies that were developed over the years.

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