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Ben Saad M.,Water Researches and Technologies Center Borj Cedria Technopark | Ben Said M.,Water Researches and Technologies Center Borj Cedria Technopark | Bousselmi L.,Water Researches and Technologies Center Borj Cedria Technopark | Ghrabi A.,Water Researches and Technologies Center Borj Cedria Technopark
Desalination and Water Treatment | Year: 2016

The main goal of the present study was to enhance the rhizobacterium potential in horizontal subsurface flow constructed wetland system planted by Phragmites australis using biotechnology. The bioinoculation of denitrifier promoting rhizobacteria fluorescent Pseudomonas spp. has been used to confer higher rhizosphere competence by environmentally friendly biological approaches. In order to study the behaviour or the denitrifying potential of the inoculated bacteria ex situ and in situ, the models of Chick–Watson and Series-Event were used with modifications. The comparison of kinetic parameters: (k): the denitrifying coefficient (h−1) and the denitrifying rate at the first contact with a determined concentration of nitrate (A) for different bioassays has shown that the application of the bioinoculation increases remarkably the efficiency of the water treatment system for the reduction of nitrates even by an individual bioinoculated bacterium. © 2016 Balaban Desalination Publications. All rights reserved.


Lassaad M.,Water Researches and Technologies Center Borj Cedria Technopark | Mohamed B.A.,Water Researches and Technologies Center Borj Cedria Technopark
International Journal of Greenhouse Gas Control | Year: 2015

In the present work the absorption of carbon dioxide in aqueous solution with Stipa tenacissima fibers has been studied in a stirred cell at 298K. The obtained experimental results show successful elimination of CO2(96%)through hydration of neutral aqueous CO2 molecules to HCO3- species by S. tenacissima fibers. This reactivity has been accompanied by a disorder at the surface morphology and a reduction in crystallinity % of cellulose results of the modification in hydrogen bonds. During the characterization Fourier Transform Infrared Spectroscopy (FTIR), X-ray diffraction (XRD), and scanning electron microscopy (SEM) were employed to investigate the structural and morphological changes in S. tenacissima fibers. © 2015 Elsevier Ltd.

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