Combining Monte Carlo simulations and dosimetry measurements for process control in the Tunisian Cobalt-60 irradiator after three half lives of the source

Ounalli, L.; Bhar, M.; Mejri, A.; Manai, K.; Bouabidi, Ammar; Abdallah, Shayma Mohamed; Reguigui, N.

doi:10.1007/s41365-017-0289-5

Cited by 11 publications

(2 citation statements)

References 10 publications

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“…The doses applied were 1, 2, and 4 kGy. The method of dose rate measurement is described in Ounalli et al (2017). It is important to mention that when gamma rays interact with water, unstable and stable oxidizing and reducing species are formed and will act as modifiers of the TBZ structure.…”

Section: Gamma Irradiation Methodologymentioning

confidence: 99%

Tunisian hypersaline sediments to set up suitable halotolerant microbial bioanodes for electrostimulated biodegradation of thiabendazole

et al. 2022

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This study investigated for the first time the performance of microbial halotolerant bioanodes designed from two Tunisian Hypersaline Sediments (THS) for simultaneous electrostimulated biodegradation of synthetic fruit packaging wastewater containing thiabendazole (TBZ), and recovery of an anodic current signal. Halotolerant bioanodes formation has been conducted on 6 cm2 carbon felt electrodes polarized at −0.1Vvs Saturated Calomel Electrode (SCE), inoculated with 80% (v:v) of synthetic wastewater containing 50 ppm of irradiated or not irradiated TBZ and 20% (v:v) of THS for a period of 7 days. Microbial bioanodes, and the corresponding anolytes, i.e., synthetic wastewater, were studied comparatively by electrochemical, microscopic, spectroscopic, molecular and microbial ecology tools. Despite the low maximum current densities recorded in the 50 ppm TBZ runs (3.66 mA/m2), more than 80% of the TBZ was degraded when non-irradiated TBZ (nTBZ) was used as the sole carbon energy by the microorganisms. Nevertheless, the degradation in the presence of irradiated TBZ (iTBZ) was greatly reduced by increasing the irradiation dose with maximum current density of 0.95 mA/m2 and a degradation rate less than 50% of iTBZ. In addition, chemical changes were observed in TBZ as a result of gamma irradiation and bioelectrochemical degradation. FT-IR and UV-Vis techniques confirmed the degradation of TBZ structural bonds producing novel functional groups. Culture-dependent approach and 16S ribosomal RNA sequencing demonstrated that bacterial community of halotolerant bioanodes formed with nTBZ were dominated by Proteobacteria (75%) and Firmicutes (25%). At species level, enrichment of Halomonas smyrnensis, Halomonas halophila, Halomonas salina, Halomonasor ganivorans and Halomonas koreensis on carbon felt electrodes were correlated with maximal current production and nTBZ degradation. As a result, THS halotolerant bacteria, and specifically those from Chott El Djerid (CJ) site certainly have well established application for the electrostimulated microbial biodegradation of fungicide in the real fruit and vegetable processing industries.

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Section: Gamma Irradiation Methodologymentioning

confidence: 99%

Tunisian hypersaline sediments to set up suitable halotolerant microbial bioanodes for electrostimulated biodegradation of thiabendazole

et al. 2022

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“…Simulation codes such as MCNP [7,8], PENELOPE [9], EGSnrc [10], FLUKA [11], GEANT4 [12][13][14][15] and it's derivative GATE [16], provide the tools for calculating radiation doses and are commonly used in several studies focusing on patient and staff protection in interventional scenarios [2][3][4][5][6]. Nevertheless, to the best of our knowledge, there are no studies that assess radiation exposure in IC procedures using the ICRP 110 voxellized phantoms [17] and GEANT4 toolkit.…”

Section: Introductionmentioning

confidence: 99%

Monte Carlo study of patient and medical staff radiation exposures during interventional cardiology

et al. 2021

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A Monte Carlo study to investigate the feasibility to use the Moroccan panoramic irradiator in sterile insect technique programs

Aknouch

El-ouardi

Hamroud

et al. 2021

Radiat Environ Biophys

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Combining Monte Carlo simulations and dosimetry measurements for process control in the Tunisian Cobalt-60 irradiator after three half lives of the source

Cited by 11 publications

References 10 publications

Tunisian hypersaline sediments to set up suitable halotolerant microbial bioanodes for electrostimulated biodegradation of thiabendazole

Tunisian hypersaline sediments to set up suitable halotolerant microbial bioanodes for electrostimulated biodegradation of thiabendazole

Monte Carlo study of patient and medical staff radiation exposures during interventional cardiology

A Monte Carlo study to investigate the feasibility to use the Moroccan panoramic irradiator in sterile insect technique programs

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