Volume 6, Issue 1 (Spring 2019)                   johe 2019, 6(1): 8-16 | Back to browse issues page


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samadi H, ghorbani shahna F, bahrami A. Design and Evaluation of Local Ventilation System and Packed Bed Scrubber to Control Hydrogen Sulfide Emitted from the Dryer Machines of a Cardboard Company. johe 2019; 6 (1) :8-16
URL: http://johe.umsha.ac.ir/article-1-389-en.html
1- Center of Excellence for Occupational Health, Health Science Research Center, Faculty of Health, Hamedan University of Medical Sciences, Hamedan, Iran
2- Center of Excellence for Occupational Health, Health Science Research Center, Faculty of Health, Hamedan University of Medical Sciences, Hamedan, Iran , fghorbani@umsha.ac.ir
Abstract:   (3878 Views)
Background and Objective: The emissions, such as Methyl Mercaptan, Hydrogen Sulfide, Dimethyl sulfide and Dimethyl disulfide from dryer machines in cardboard industries cause odor annoyance and affect workers health and that of residents who live nearby. This study aimed to determine the effectiveness of local exhaust ventilation system and packed bed scrubber implemented in the control of hydrogen sulfide from dryer machines of a cardboard industry.
Materials and Methods: In this study, the concentrations of emitted pollutants into the breathing zone of workers and the workplace were evaluated regarding on and off settings of the ventilation system as well as before and after the utilization of scrubber for determining the effectiveness of the system designed to control the hydrogen sulfide gas.
Results: The efficiency of the local exhaust ventilation system was 55% in reducing individual exposure to the dryer units. The efficiency of the packed bed scrubber in removing hydrogen sulfide from the gas stream was obtained at 91.7%.
Conclusion: The results showed that the local exhaust ventilation system, along with the packed bed scrubber, has a good efficiency in terms of the control of hydrogen sulfide emitted from the dryers, and this system can be a good option for such industries.
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Type of Study: Research Article | Subject: Chemical agents

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