مجله محیط زیست و توسعه فرابخشی
پیاپی 72 (تابستان 1400)

Nitrogen oxides are one of the most important pollutants in the air, which releasing into the atmosphere causes to produce of dangerous secondary pollutants. Identifying the various methods of reducing this pollutant in the chimney is an important guide for choosing an effective method to achieve the desired level of this pollutant according to the type of industry for experts. In this paper, methods for reducing nitrogen oxides in flue gas flow are reviewed. These methods include chemical processes such as plasma and non-plasma oxidation by an oxidizing agent, catalytic and non-catalytic reduction, electron irradiation, biological process, and physical adsorption processes on the surface. These methods separate nitrogen oxide from a gaseous stream and convert it into inert materials. These methods are very effective for industries that use old technologies and are highly polluting. The main technologies introduced in this article are among the four main methods with developed technology or they are close to development and can be used in Iranian industries.

This study was conducted to identify and investigate changes in the size, type and number of habitat patchs in Mashkid Wetland in 2010 and 2020. For this purpose, in the spring of 2020, habitat patchs were identified through field operations and by objective observation. Ground control points were prepared with the aim of assessing the accuracy of the final classification maps by recording land cover information and location of each type of patchs using a global positioning device. Landscape structure map was drawn through visual interpretation of phenomena using Google Earth satellite images. Arc GIS 10.3 software was used to prepare the final land use structure classification map and calculate the area of ​​the patchs. The percentage of each patch in the heterogeneous land was determined by Excel 2013 software. According to the results, the landscape mosaic of the region in the spring of 2010 had habitat types of plants, rocks and alluvial areas and in the spring of 2020 consisted of habitats of plants, shrubs, rocks and water surfaces. A total of 131 patchs were identified and counted in 2020 and 40 habitat patchs in the landscape structure of the region in 2010. In 2010, poor vegetation patch had the highest percentage of area compared to the whole region and in 2020, water patch had the highest percentage of share. Overall, the results indicate significant changes in the size, variety and number of habitat patchs over time.

The present study aimed to investigate the relationship between green transformational leadership on environmental citizenship behaviors concerning the mediating role of environmental beliefs and green policies. This study was applied in a descriptive and surveyed manner. The statistical population in this study is 212 employees of Shiraz Municipality who were selected by the available sampling method. To analyze the data, the partial least squares method and Smart PLS2 software were used. The findings indicate that measurement tools have good validity and Cronbach's alpha coefficient is more than 0.7 for all research structures. The results indicate that green transformational leadership has a positive and significant effect on environmental citizenship behaviors. There is also a positive and significant effect between the variables of green transformational leadership and environmental beliefs and green policies. Environmental beliefs and green policies also have a positive and significant effect on environmental citizenship behaviors, but environmental beliefs and green policies play a mediating role between green transformational leadership and green citizenship behaviors.

Population growth has increased the need for energy especially use of fossil fuels, which in turn is lead to increase carbon dioxide in the atmosphere, which is a type of greenhouse gas that leading to enhance global warming. This global warming can put plant and animal habitats in danger and change climate patterns, resulting in floods, droughts and severe destructive storms. One of the ways that reduces carbon dioxide in the atmosphere is geological carbon dioxide storage, which requires a porous reservoir with an impermeable sealing caprock that laying on the reservoir. The importance of caprock is to inhibit the movement of submerging carbon dioxide, saline and the other existence materials preventing leakage of these materials into the upper formations. Caprock should be able to withstand in-situ stress changes and physical and chemical properties changes. The purpose of this paper is to review geological carbon dioxide storage methods and the mechanism of caprock in carbon dioxide storage. The research method is an overview of related sources and references. According to the results of this study, the sealing pressure of the caprock should be distinguished before the injection process and during the injection process should not exceed a certain amount. Likewise, before the injection of carbon dioxide, its temperature should be proportionate to the temperature of the reservoir to avert caprock failure and it is better to take the geochemical, geomechanical, thermal and flow path properties in experimental and simulation works into consideration for a better understanding of caprock’s behavior and structure.

In this paper, for survey human health effect on economic growth, an econometric model with panel data is used for oil countries in 1995-2017. Innovation of this paper is estimation of an endogenous economic growth model with survey effect of health of human on economic growth, with effect of environmental pollution on human health. This paper, used from a health index and an environmental pollution index (CO2 and NOX). PANEL-SUR model is used. Results reveal that environmental pollution has negative effect on health index and human development index. Results reveal that in our countries there is a negative relation between pollution and economic growth because of positive relation between health index and human development index and positive relation between human development index and economic growth, more pollution decrease positive effect of human development index on economic growth.

Financial development is one of the goals of countries. This study investigates for the first time the impact of financial development on environmental pollution and energy consumption with the method of generalized torque, dynamic least squares and adjusted minimum squares in OPEC member countries in the period 1992-1992. Iran has a comparative advantage in energy consumption, so research in this area is necessary. According to the results of financial development, it has had a positive and significant effect on environmental pollution in these countries in the form of three models, and indicates that financial development in these countries has not led to the creation of environmentally friendly technologies. Energy consumption, GDP and urban growth have a positive and significant effect on environmental pollution. The Kuznets curve in these countries is confirmed by an inverted U-shape. Financial development with dynamic least squares and adjusted ordinary squares has a positive and significant effect on energy consumption.