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Determination and Emission Factories of SO2, CO2, CO, NO, NO2,  NOx Gases in the Fanavaran Petrochemical
A Ghanavati Hormozi, K. Naddafi, R. Nabizadeh Nodehi, N. Jaafarzadeh,
Volume 3, Issue 1 (3 2010)
Abstract

Background and Objectives:Fanavaran petrochemical company is located on the shore of Persian Gulf on west south of Iran, Imam Khomeini Bandar, petrochemical special economic zone with of 25 hectares area. Two units of this company, methanol unit with production capacity 1000000 tons/years and monoxide carbon unit with 140000 tons/years were studied for determination and emission factories of SO2, CO2, CO, NO, NO2, NOx Gases.
Materials and methods: With attention to project goals, for implementation of this project 14 months took into from April 2008 till June2009.For goals provide of mentioned research on this basis,case sampling were done from 3 emission sources by using of direct reading device of gas concentration according to standard methods of United State Environmental Protection Agency.
Results: Results of the study indicate that concentration of issued pollutant gases from these units is in the level lower than Iran department of environment standard level. The total amount of emission Factory of SO2, CO2, CO, NO, NO2, NOx gases diffused from these units are11.7×10-6 , 81/8×10-6, 0.14×10-6, 431.5×10-6, 19.2×10-6 , 681.2×10-6kg /tons million production in a year respectively.
Conclusion:Parameters which optimization is performed in accordance with them, include of additional air percentage, exit air temperature from pre heater, and fuel type, in fact with regarding these 3 factors. effects, the work is done in a manner that the amount of pollutants diffusion is near to minimum and the selected best fuel.


Evaluation of the level of pollution and potential ecological risk of some heavy metals in surface soils in the Ahvaz oil-field
A Nazarpour, N Ghanavati, T Babaenejad,
Volume 10, Issue 3 (12-2017)
Abstract

Background and Objective: The aim of the present study was to investigate the concentration, enrichment factor, Nemrow integrated pollution index, and potential ecological risk of heavy metals including (Pb, Ni, Cu, Zn, Cd, V and Cr) in surface soils of Ahvaz oil filed.
Materials and Methods: For this purpose, 49 soil samples with a systematic scheme from Ahvaz oil field were analyzed by atomic absorption method.

Results: The mean concentration of heavy metals was as follow: Pb (251.20), Ni (94.6), Cu (75.80), Zn (132.84), Cd (0.69), V (4.97) and Cr (141.48) (mg/kg). The average value of enrichment factor in the soil samples decreased as Pb>Ni>Cu>Cr>Zn>Cd>V. Nemrow integrated pollution index (NIPI) indicated high level of pollution for the studied heavy metals except V. The Potential ecological risk of the studied heavy metals showed a low potential ecological risk for V, Cd, Zn and Cr; Cu showed a moderate risk and Ni and Pb indicated a considerable ecological risk. The mean value of the risk index indicated that 27 (55.10%) of the soil samples with a moderate risk, 21 (42.85%) with a considerable risk and one sample (2.05%) with a high ecological risk.
Conclusion: The obtained results from the enrichment factor, Potential ecological risk, and risk index indicated that the main source of heavy metals in the study area were anthropogenic sources such as oil drilling activities.
 

Human health risk assessment of heavy metals in street dust in Abadan
N Ghanavati,
Volume 11, Issue 1 (6-2018)
Abstract
Background and Objective: The aim of the present study was to investigate risk of heavy metals on human health including (Pb, Zn, Cu, Cr, Cd, Ni, V, As and Co) in street dusts in Abadan.
Materials and Methods: 30 dust samples were collected from sidewalks of main streets of Abadan and analyzed by inductively coupled spectroscopy (ICP-OES) method.
Results: The mean concentration of the heavy metals was as follows: Pb (59.13), Zn (287.50), Cu (112.97), Cr (50.30), Cd (0.52), Ni (56.77), V (35.83), As (10.7) and Co (7.33) (mg/kg). The concentration of all of the heavy metals, except V, in the dust samples was several times higher than the field concentration (concentration in the earth's crust). The average value of the potential ecological risk of the heavy metals V, Cr, Zn, Ni, As, Cu and Pb was low and had a low potential ecological risk. Cd had a moderate potential ecological risk. Also, based on the average value of Risk Index, the samples were at medium risk. Cumulative non-carcinogenic hazard of all the heavy metals in the street dust was higher for children than adults. This indicates that children are more at risk for heavy metals than the adults. In both age groups, Cr had the highest risk of carcinogenicity and Pb had the lowest risk.
Conclusion: The results indicated that the main source of the heavy metals in the study area is anthropogenic sources such as traffic, industrial facilities and burning of fossil fuels.
 

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