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Enhance Biodegradation of Pentaerythritol Tetranitrate (Petn) Anaerobic/Aerobic Biological Treatment by Biosurfactant



Sadani M1, 2, 3 ; Karami MA4 ; Mirzaei N5, 6 ; Teimouri F1, 2 ; Amin MM7, 8
Authors
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Authors Affiliations
  1. 1. Environment Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
  2. 2. Department of Environmental Health Engineering, Student Research Center, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran
  3. 3. Department of Environmental Health Engineering, School of Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran
  4. 4. Department of Environmental Health Engineering, Faculty of Health and Nutrition, Lorestan University of Medical Sciences, Khorramabad, Iran
  5. 5. Environmental Health Research Center, Kurdistan University of Medical Sciences, Sanandaj, Iran
  6. 6. Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
  7. 7. Environment Research Center, Research Institute for Primordial Prevention of Non-Communicable Disease, Isfahan University of Medical Sciences, Isfahan, Iran
  8. 8. Department of Environmental Health Engineering, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran

Source: Bulgarian Chemical Communications Published:2015

Abstract

Pentaerythritoltetranitrate (PETN) is explosive that show more toxic to some microorganisms than other explosives. Some chemical and Structural character of PETN such as very low solubility in water can cause some problem to biological treatments in success. This study was undertaken to evaluate the potential for using anaerobic/aerobic sequences to degrade PETN and the influence of rhamnolipids biosurfactant for PETN biodegradation improvement. The results showed that the anaerobic treatment with rhamnolipid biosurfactant caused an almost 74% transformation of PETN and 30 days aeration of the reactor led to an elimination of most of the remaining PETN (almost 98%). in the control experiments without biosurfactant a 24% PETN removal was observed. Rhamnolipids can enhance solubility of PETN and disperse it in aqueous solution and cause homogeneous distribution in soil can cause microbial PETN degradation enhancement and more denitrated metabolites disappearance.