Journal of Environmental Health and Sustainable Development
Volume:2 Issue: 2, Jun 2017

Due to a population of more than 1.7 million people, a lot of vehicles and large industries around the city in Isfahan, it has become one of the most polluted cities in Iran. The aim of this study was a spatial analysis of the concentrations of air pollutants and the air quality index (AQI).
In this descriptive and evaluative study, the air quality data of 7 monitoring stations in 2012 were taken from the Isfahan Department of Environment. The calculation of AQI was done as per the EPA guidelines. The zoning pollutant concentrations and AQI in the study area was determined with the use of the Arc map software, version 10.1.
The results showed that the highest concentrations of pollutants and the AQI were related to the Ahmadabad station. Also, the air quality in Isfahan in 2012 was 4.38% (4 days) in good condition, 12.7% (47 days) in moderate, 42.56% (156 days) in unhealthy condition for sensitive groups, 39.49% (144 day) in unhealthy conditions, 2.8% (10 days) in a very unhealthy and 1.2% (4 days) in dangerous conditions, respectively.
It was found that particulate matter was the main cause of Isfahan air pollution, while Ahmadabad is the most polluted point in Isfahan. According to the calculations, during 314 days of the year 2012, the air quality of Isfahan was in unhealthy conditions and only 4 days was in good condition. This is one of the biggest health challenges in this city.

Di (2-ethylhexyl) phthalate is one of the most abundant phthalate esters and it is widely used as softeners in plastic products. Malformation, carcinogenicity, the poisoning of the reproductive system, and also the disruption of the human endocrine system are the harmful effects of these substances.
In this research, the removal of di (2-ethylhexyl) phthalate from aqueous solutions by cellulose nanofiber non-continuous was studied. The effects of some variables such as the initial concentration of the di (2-ethylhexyl) phthalate, the adsorbent dosage, the contact time, and the pH at room temperature were tested. The pseudo-first-order and pseudo-second-order kinetic models were used to describe the kinetic data. Also, the Freundlich and Langmuir adsorption models were tested based on the optimum conditions.
The results indicated that the adsorption of di (2-ethylhexyl) phthalate follows the pseudo-second-order kinetic model (R2 = 0.9674) and the Langmuir isotherm (R2 = 0.9573).
Due to the high adsorption capacity of the cellulose nano fiber (312.5 mg/gr), it can be concluded that it is an appropriate adsorbent for the removal of di (2-ethylhexyl) phthalate from aqueous solutions.

Decentralized wastewater treatment facilities are an expensive approach for developing countries. Decentralized wastewater treatment plants (DWWTPs) are a flexible technology. They have low construction and operational costs. Site selection is the most significant stage in the implementation of a DWWTPS. Therefore, the present study aimed to perform a site selection among the proposed locations for a DWWTPS in Qom city.
In this experimental study, the criteria of DWWTPS site selection were determined, judged by interview experts, and analyzed by the analytic hierarchy process (AHP) using the Expert Choice 11 software. Finally, according to the performed judgments, the proposed locations (sites) were ranked in order of preference.
The slope of the land held maximum importance, while the density of the population had minimum importance in the site selection process. The southern and north-eastern regions of Qom had appropriate sites.
The AHP is a decision analysis method that considers both the qualitative and quantitative information applicable for the various subjects, especially site selection. In this study, according to the expert’s notices, the AHP technique could determine an appropriate site among the proposed locations for the construction of DWWTPS.

Dyes are visible materials and are considered as one of the hazardous components that make up industrial waste. So it is removed from bodies of water, using various methods. In this regard, the Fenton oxidation process is one of the most effective ways to remove colored contaminants in aquatic environments, which has many applications today.
In this empirical study, the effect of the Fenton oxidation process in the removal of the soluble synthetic dye, Reactive Red 2 (RR2), has been studied. The color removal efficiency of the Fenton process in the presence of ferrous sulfate and hydrogen peroxide at different reaction variables were studied in the Jar Test when initial concentration of the dye was 10 mg/L at constant pH = 3 and lab temperature.
The results showed that concentrations of hydrogen peroxide and iron ions influence the maximum removal efficiency.
According to the survey results, Fenton oxidation is an effective method for the removal of RR2 dye from aqueous solutions.

In recent times, one of the most important purposes of sustainable development has been defined as the protection of environmental health. Using appropriate and innovative infrastructures such as nanotechnology is a solution to walk along the path of sustainable development and solves many environmental problems. The purpose of this study is to review the application of carbon nanotubes in the removal of environmental pollutants, based on conducted studies.
All scientific data related to the issue were collected from scientific databases of Google Scholar, Scopus, Elsevier, and SID to evaluate and conduct the study. Keywords such as carbon nanotubes, environmental pollutant, sustainable development, and environmental health were used. Also, 85 articles were used in this review research (1993–2016).
Based on the evaluated studies, the results indicated that common methods of sewage treatment are not enough to remove the mentioned environmental pollutants completely. In the mentioned methods, despite high decomposition, the amount of mineralization has been reduced and the toxicity of wastewaters has remained unchanged or has increased. Adsorption has been propounded due to its simplicity and lower energy consumption compared with other methods. Carbon nanotubes (CNT) are unique one-dimensional macromolecules which have high thermal resistance and chemical stability. Adsorption through CNT as the adsorbent in the treatment of drinking water and sewage polluted with pharmaceutical, petroleum, heavy metal, and leachate pollutants has been studied widely.
This study indicated CNT as effective adsorbents that have high potential to protect the environment and promote sustainable development.

Micro pollutants have become one of the most important environmental concerns around the world. These natural and synthetic compounds have been called Endocrine Disrupting Chemicals (EDCs) due totheir interference with the normal functionof the endocrine system in humans and animals. They also include natural and synthetic hormones and their metabolite, surfactant, insecticide, as well as some pharmaceuticals and health care products. Due to the effects of these compounds, importance of their monitoring in the environment is perceived like other countries.
This paper was carried out on the basis of studies accomplished from2000 to 2017 and also the ones published in databases such as Google Scholar, Elsevier, Scopus, Science direct, Magiran, and SID using hormone removal, micro pollutant removal, removal hormones from wastewater, sex hormones removal, steroidal hormones, hormone removal from wastewater, and removal efficiency of micro pollutants as the keywords. PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) statement was used for selecting articles.
Sexual reproduction of fish exposed to estrogenic compounds was changed. Phytoestrogens exist on a certain strain of clover which caused severe infertility in sheepgrazing on them. Some studies have reported that a decrease in men's sperm and breast cancer in women are caused by exposure to estrogenic compounds.
According to the current study, further studies are needed to determine the entry routes of steroid hormones into aquatic environment, the detection techniques and measurements, as well as the best removal method.