---

Background and Aim: Organic dyes are the major pollutants produced in many industries and have different adverse effects on water resources. The aim of this study was to synthesize a novel adsorbent with high adsorption capacity and evaluate its efficiency in removing organic dyes from aqueous solutions in a batch system. Material and Methods: This study was an applied research in which carbon nanotube composite-dendrimer was synthesized and its chemical properties was evaluated by fourier transform infrared spectroscopy. Acid blue 1 dye was selected as a model to evaluate the decolorization capacity of the adsorbent. The effects of the parameters influencing the adsorption process such as initial dye concentration, adsorbent dose, pH and the effect of inorganic salts were also studied. Longmuir and Freundlich isotherm models and pseudo first order and pseudo-second-order kinetic models were used for data evaluation. Result: In this study removal of acid black 1 dye by carbon nanotube-dendrimer composite followed the Longmuir and Freundlich isotherm and pseudo-second-order kinetic models. We also found that the synthesized adsorbent had a maximum adsorbent capacity equal to 690 mg/g, when the concentration of dye was 100 mg/l. Conclusion: We concluded that carbon nanotube composites – dendrimer can be used as an effective adsorbent for removal of dyes form colored effluents. Keyword: Dye, Adsorption, Carbon nanotube, Dendrimer. Received: Dec 14, 2013 Accepted: May 28, 2014

---

Assessment of air quality in Sanandaj City and its association with cardiovascular- respiratory diseases, and preterm birth in 2015-16
 
Borhan Mansouri¹, Namamali Azadi², Amir Mohammadi³, Younes Hame Sadeghi⁴, Ali Mansouri⁵, Jameleh Majidi⁶
1. Assistant Professors, Medical Toxicology and Drug Abuse Research Center (MTDRC), Birjand University of Medical Sciences, Birjand, Iran.
2. Assistant Professors, Biostatistics Department, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
3. Environmental Science and Technology Research Center, Department of Environmental Health Engineering, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
4. Kurdistan University of Medical Sciences, Sanandaj, Iran
5.Student Research Committee, Kurdistan University of Medical Sciences, Sanandaj, Iran,Tel:083-66729189, Email:soranmansouri246@gmail.com
6.Kurdistan University of Medical Sciences, Sanandaj, Iran
 
 
ABSTRACT
Background and Aim: Over the past decades, air pollution in the urban areas has shown an increasing trend. Air pollutants have resulted in different diseases. The aim of this study was to study the air quality in Sanandaj City in 2015 and 2016 and investigate its potential relationship with cardio-respiratory disorders and premature birth.
Material and Method: This was a cross-sectional (descriptive-analytic) study, in which air pollutants data (Particulate Matter (PM₁₀), ozone, nitrogen dioxide, nitrogen monoxide, carbon monoxide, and sulfur dioxide) were collected from Department of Environmental Protection, Kurdistan Province. Data about cardio-respiratory diseases and preterm births were obtained from Tohid, Besat, and Tamin-e-Ejtemaee hospitals. Time series analysis was used to analyze the data.
Result: The results showed that the levels of all air pollutants except particulate matters of less than 10 microns were lower than the annual allowed limit. Associated risk analysis showed relationship of particulate matters with increased mortality rate due to cardiovascular diseases.  However, time series analysis showed that none of the air pollutants had statistically significant associtation with the mortality rate of cardiovascular diseases and number of premature births.
Conclusion: The results of this study showed PM₁₀ as the only pollutants in Sanandaj air which was outside the standard limits and showed no significant relationship with mortality rate of cardio-respiratory diseases.