List of Articles انتشار آلودگی

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  1 - Feasibility of Discharge Permit Market in Rivers
  شروین  جمشیدی Emad  Mahjoubi Mojtaba  Ardestani
  The purpose of this study is to focus on the challenges that the nitrogen discharge permits market face with in Sefidrud River. In addition, it intends to find the optimal waste load allocation (WLA) in regard. Thus, the river is simulated by Qual2kw in which the total More

  The purpose of this study is to focus on the challenges that the nitrogen discharge permits market face with in Sefidrud River. In addition, it intends to find the optimal waste load allocation (WLA) in regard. Thus, the river is simulated by Qual2kw in which the total maximum daily loads (TMDLs) and the impacts of dischargers at the quality of checkpoint are calculated. Eventually, the optimization of WLA is assigned using the total abatement cost functions. Results verify that this market is limited because of few permits supplied by point sources. Here, 150 permits are totally traded that can only save 2% in total abatement costs comparing to the conventional TMDL policy. The economically incentive based optimal solution is only in hand if some dischargers use 15 to 25% of primary price as discount. However, in case of Gharesoo, the total cost savings increase to 35%. It can be concluded that the outcomes of discharge permit market relies on the total permit supplies and demands and their feasibility requires case studies in advance. Manuscript profile
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  2 - Examining the amount of cadmium and lead in the soil downstream of Taybad landfill
  akram ghorbani Mohammad ghafori Mohammad javad alipoor
  The aim of this study was to investigate the emission of heavy metals (cadmium and lead) in the soil around Taybad landfill. For this purpose, 15 stations at a distance of 100 meters from each other to the landfill of Taybad city were selected for sampling. Sampling 5 s More

  The aim of this study was to investigate the emission of heavy metals (cadmium and lead) in the soil around Taybad landfill. For this purpose, 15 stations at a distance of 100 meters from each other to the landfill of Taybad city were selected for sampling. Sampling 5 samples and repeating 3 times from each station, the samples were transferred to the laboratory for analysis to check the level of pollution indicators. Hypotheses were analyzed using one-sample t-test and Pearson's correlation coefficient with spss 24 software. It was found that the average total concentration of lead is equal to 52.04 and the average total concentration of cadmium is equal to 1.748. The concentration of the mentioned metals is significantly higher than the average global soil and earth's crust with 95% confidence. In the case of lead and cadmium, the highest contamination was in station 10 and 4, and the lowest contamination was in station 6 and 12, respectively. It is concluded that the amount of soil contamination does not change significantly with increasing distance, because the volume and concentration of contaminant runoff from the landfill (contaminant) along the path is constant. Therefore, it is better to provide environmental training for municipal municipal personnel and citizens of the region and to invest in the restoration of the environment and its further protection. Manuscript profile