List of articles (by subject) Environment and energy
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Open Access Article
1 - Use of macro-algae as biomass resource for renewable energy production
mehran parsa Maryam Pazoki hassan hoveidiEnergy consumption has significantly increased beside of urbanization growth. It may go up so fast that it results in environmental Issues and greater natural resource depletions. Therefore, the use of renewable and clean fuel is considered necessary. Currently, macro-a MoreEnergy consumption has significantly increased beside of urbanization growth. It may go up so fast that it results in environmental Issues and greater natural resource depletions. Therefore, the use of renewable and clean fuel is considered necessary. Currently, macro-algae are cultivated in various regions of the world for various industrial and food usages. Macro-algae are known as a specific resource of alternative for energy production due to their biochemical properties such as high level of carbohydrate, lipid and protein. Various biotechnology methods have been developed for energy producing from macro-algae which are divided into two categories: 1) biochemical processes (fermentation, digestion) and 2) thermochemical processes (incineration, pyrolysis, and hydrothermal liquefaction). Depending on the type of methods, the product are categorized under different phases such as solid, liquid and gas. In this study, we will review the methods and studies on the energy production of different species of macroalgae. Manuscript profile -
Open Access Article
2 - Environmental effects of sustainable energies (Case Study: Solar, Wind and Hydroelectric Energy)
fatemeh ghanbari farham amin shareIncreasing air pollution and global warming due to the excessive use of fossil fuels attracted public attention to climate change. Accordingly, the expected increase in demand for other alternative energy sources especialy renewable energy is predictable. While some res MoreIncreasing air pollution and global warming due to the excessive use of fossil fuels attracted public attention to climate change. Accordingly, the expected increase in demand for other alternative energy sources especialy renewable energy is predictable. While some research on renewable energy shows that these kind of energy also have undesirable environmental effects. In this study solar energy systems, wind power and hydroelectric power systems wew investigated and their effects on air, soil, sound and effect on wildlife were studied. The results show that although these kind of energy are called clean energy, they have negative environmental effects. This research also suggests ways to prevent the effects of destructive renewable energy sources. Manuscript profile -
Open Access Article
3 - Prioritization of energy recovery technologies from municipal solid waste (Case study of Mashhad)
Arman ShahnazariThermal energy recovery technologies which used to burn solid urban waste are one of the relatively new and appropriate methods in waste management. Heat and gases are generated by burning waste that can be used to generate energy. In this research, a decision model bas MoreThermal energy recovery technologies which used to burn solid urban waste are one of the relatively new and appropriate methods in waste management. Heat and gases are generated by burning waste that can be used to generate energy. In this research, a decision model based on the Analytic Hierarchy Process (AHP) method is Provided to select the best thermochemical system based on three technical, economic and environmental criteria. In this study, waste incineration, gasification, pyrolysis and plasma systems were evaluated. Collection of required information was obtained by reviewing reliable sources and preparing and completing questionnaires. The study area in this study is Mashhad city. The results of this study indicate that among the studied systems, plasma system (technology) is the best option for energy recovery from solid wastes in Mashhad, after that, waste incineration, gasification and pyrolysis systems are in the next categories, respectively. Manuscript profile -
Open Access Article
4 - Examining the components of the LEED index in the improvement of the second secondary schools of Semnan province with an ecological approach
farzad mohammadi Mohammad Rahmani ghasbeh Gholamhosein naseriToday, due to the fact that non-renewable energy resources are running out and the destruction caused by the use of these resources leads to the environment; The attention of countries has been drawn towards the use of renewable resources and sustainable development. At MoreToday, due to the fact that non-renewable energy resources are running out and the destruction caused by the use of these resources leads to the environment; The attention of countries has been drawn towards the use of renewable resources and sustainable development. At this time, the attitude towards green architectural approaches in schools has a special place because in addition to observing the basic points of green buildings and saving energy, the existence of such schools is an educational tool for teaching sustainable practices to students. The purpose of this research is to investigate the degree of realization of the components of green schools based on the LEED standard tool with an ecological approach in the secondary schools of Semnan province for improvement. In terms of practical purpose and in terms of descriptive-analytical method and rating and scoring tool, the present research is LEED in the sense of design and environmental guide. The statistical population includes all secondary schools in Semnan province. The data collection tool was a questionnaire and standard indicators, after collecting information and data from the questionnaires; The data were analyzed using Spss software version 22 and with descriptive and inferential statistics. The results showed that the LEED index for checking the improvement of suitable schools and from the point of view of having green schools and components are in the lower than average range. Manuscript profile