An assessment on dispersion of carbon monoxide from a cement factory

Abstract

Background: Modeling the dispersion of pollutants from factory stacks addresses the problem of matching emissions of a cement plant with the capacity of the environment to avoid affecting the environment and society. The main objective of this study was to simulate the dispersion of carbon monoxide (CO) from the main stack of a cement plant in Doroud, Iran using SCREEN3 software developed by the US Environmental Protection Agency (US EPA). Methods: Four samplings were conducted to measure the concentration of CO in the three-stack flow of a cement factory. The input parameters were those affecting gas dispersion and included CO rate, meteorological parameters, factors associated with the stack, and various factors related to the receptor. All factors were incorporated in the model, and dispersion was modeled by SCREEN3. Results: Southwesterly winds have been dominant in the past 5 years. According to the results of this study, the highest and the lowest CO levels were estimated by the model in spring and autumn as having maximum amounts of 842.06 and 88.31 µg/m 3 , respectively, within distances of 526 and 960 m from the cement plant, respectively, at a downwind southwesterly direction from the plant. Conclusion: Although the maximum predicted CO levels in each of the four seasons were lower than the NAAQS criteria, the simulation results can be used as a base for reducing CO emissions to prevent the potentially significant health and environmental impacts imposed by long-term contact to such emissions.

Dispersion modelling of carbon monoxide and total suspended particulate emission from cement stacks: case study of PT. Semen Tonasa in Indonesia

“…Similar result study in Iran shown that the worst condition occurred in spring in an unstable condition in which the maximum concentration of pollutant measured near the cement plant was at a higher level than in the other seasons. 25 CO and TSP have harmful effects on human health. When inspired, environmental CO diffuses rapidly across the alveolar capillary membrane and binds to hemoglobin, forming carboxyhemoglobin (COHb).…”

Removal and determination of carbon monoxide based on copper oxide immobilized on Zeolite 13X Nanocatalys t by catalytic oxidation process and gas flow analyzer

“…Carbon monoxide is a poisonous gas for humans and animals and also has adverse effects on the environment [2] Regarding the concentration ------------------------of carbon monoxide in the exhaus t air of Iran's indus tries, several inves tigations have been carried out, for example, in 2010, Junadi et al inves tigated the exhaus t of was te incinerators of several hospitals in Hamedan city, and the highes t concentration of carbon monoxide reported as 1041 ppm, which 10.4 times the s tandard of the Environmental Organization in 2002 [4]. Also, in another s tudy, Guderzi et al inves tigated the pollutants from cement indus tries in Lores tan city, and based on the results, the highes t concentration of carbon monoxide is related to winter and spring seasons and is equal to 630 ± 53.04 and 2378 ± 76 ppm, respectively, which are higher than the permissible exposure limit [5]. About 95% of the absorbed carbon monoxide is easily combined with hemoglobin to form carboxyhemoglobin.…”