Volume 8, Issue 2 (6-2018)                   JHSW 2018, 8(2): 103-120 | Back to browse issues page

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Ghahri A, Golbabaei F, Vafajoo L, Mireskandari S M, Yaseri M, Shahtaheri S J et al . Effects of acid modification of activated charcoal on adsorption of Sevoflurane as an anesthesia gas. JHSW. 2018; 8 (2) :103-120
URL: http://jhsw.tums.ac.ir/article-1-5852-en.html
1- Assistant Professor, Research Center for Health, Safety and Environment (RCHSE), Department of Occupational Health Engineering, Alborz University of Medical Sciences, Karaj, Iran
2- Professor, Department of Occupational Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran , fgolbabaei@sina.tums.ac.ir
3- Associate Professor, Department of Chemical Engineering, Islamic Azad University, South Tehran Branch, Tehran, Iran
4- Associate Professor, Department of Anesthesiology and Critical Care, Imam khomeini Hospital Complex, Tehran University of Medical Sciences, Tehran, Iran
5- Assistant Professor, Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
6- Professor, Department of Occupational Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
7- M.Sc., Department of Occupational Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
Abstract:   (864 Views)

Introduction: Anesthetic gases used in hospitals include N2O and halogenated hydrocarbons (such as sevoflurane) which can be released through leakages and uncontrolled exhalation by the patient into the ambient air of clinical staff. These gases have greenhouse effect and damage to the ozone layer and serious risks such as reproductive, preterm delivery and fetal abnormalities and increased spontaneous abortion on the health of operating room personnel. Therefore, removal of these gases from the workplaces is essential especially in the treatment centers. The purpose of the present study was to investigate the adsorption of sevoflurane from air by using activated Charcoal and also the effect of acid modification on its performance.
 

Material and Method: In this study, two adsorbents of unmodified and modified activated charcoal with nitric acid were used to remove sevoflurane. After preparation, the adsorbents were characterized using XRD, FT-IR, BET and FE-SEM methods. After characterization, the breakthrough and adsorption capacity of sevoflurane on both adsorbents were determined using the modified wheeler equation.
 

Result: The results of characterization showed that acid modification did not affect the crystalline structure of activated charcoal and increased the adsorption and microporous of acid-modified activated charcoal in comparison with unmodified activated charcoal. It also reduces surface functional groups of the activated carbon. The results of determination of adsorption capacity indicated that the adsorption capacity of modified activated charcoal was improved in comparison with unmodified activated charcoal.
 

Conclusion: The results demonstrated that both adsorbents have the ability to absorb sevoflurane and modified activated charcoal have a better performance in this process. This effect may be due to the surface area of adsorption and volume of micro pores more than the unmodified activated charcoal.

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Type of Study: Research | Subject: Special
Received: 2018/06/22 | Accepted: 2018/06/22 | Published: 2018/06/22

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