Laboratory of Polymers, Radiation and Environment (LPRE) - Team of Organic and Macromolecular Chemistry (TOMC), Department of Chemistry, University Ibn Tofail, Faculty of Sciences, Kenitra, Morocco
Most domestic wastewater in urban and rural centers is dismissed without prior treatment or in the sewage system or directly into the aquatic environment. This often causes an alteration and a biological imbalance. In this study we will work on the natural lagoon treatment plant wastewater city of Dar ElGueddari with a nominal capacity of 700 m3/ day.
The present work aims to:
Analyze the results of monitoring campaigns carried out at the entrance and exit of STEP in 2012-2013 for pollution parameters BOD5, COD and TSS.
Analyze the purification performance of the station and offer recommendations to improve their treatment efficiency according to national standards or European.
Furthermore, we will also perform a qualitative analysis through:
The evaluation of the quality of the effluent based on domestic Moroccan discharge standards and compliance in terms of BOD5, COD and TSS.
The confirmation of the characteristic of waste water by comparing the DCO reports/BOD5 and TSS/BOD5 with the usual ratios of urban wastewater.
Comparison of the abatement of pollution parameters compared to those set by the European directive.
The processing of sugar cane in Morocco is by specific industrial units. The SURAC Company (Dar Gueddari) produces significant quantities of sugar and molasses in a period of production that extends the month from January to June Wastewater produced by this activity is characterized by very high loads of organic matter whose flow is 1200 m3 / d. The stock SURAC its wastewater Lagoons with limited capacity for pretreatment in wastewater. The aim of our study was to assess the pollution of waste water from the SURAC at the lagoon which is adopted by the SURAC as a means of treating these liquid discharges. The physicochemical analysis of effluent from the SURAC gave the following average values: PH (Moy=4,15), Temperature (Moy= 25
Today, most synthetic dyes used in the field of textile finishing are among other reactive dyes water-soluble and vat dyes. The use of these dyes produced a large amount of colored effluents visible and undesirable to human health and the environment. In this study we evaluated the importance of membrane technology in the purification of some existing dyes in wastewater from step textile finishing. First, we quantified the retention capacity of the colored solutions (Indigo / Red cibacrone), using an asymmetric membrane, we synthesized in the laboratory and is based on two physical copolymers polysulfone (PSU) and poly
In this paper we present as a first step the synthesis of an epoxide resin hexafonctionnelle following two steps. During the first stage, we performed phosphorylation of diphenylamine ethylene, followed by a second stage, which has led us to change after a new hexafonctionnelle resin. The microscopic structural characterization has been confirmed using the Nuclear Magnetic Resonance (NMR) proton and phosphorus. The epoxy resin is then cured with methylene dianiline (MDA) (HGEDAPT / MDA) and deposited on the copper. Finally we studied the impact of this new coating hexafonctionnelle epoxy resin on copper in an aggressive environment of 3% NaCl. Thereafter, we conducted a new formulation by adding an inorganic filler (zinc) in the protective matrix E1 (HGEDAPT / MDA) and E2 (HGEDAPT / MDA / Zn). The stationary and transient electrochemical studies are very interesting the value of their stationary efficiencies are respectively 92% and 97% and transitional 93% and 98.5%.
In this work, we eliminated models colored solutions (indigo and red cibacrone). For this we used respectively the adsorption method using A500 anionic resin as an adsorbent and by the ultrafiltration process using a synthetic semipermeable membrane made of polysulfone and titanium dioxide as filler. From the results obtained, we observed that the values of the rate of decolorization by adsorption treated colored solutions were registered in 92% and 80% respectively for red cibacrone couples / anion resin A500 and indigo / anionic resin A500 a part. And in the case of ultrafiltration the results were recorded by 90% and 74.42% respectively of patterns of red colored solutions and indigo cibacrone other.
The purpose of this work is to synthesize a new nano-functional epoxy resin in two steps. The phosphorylation of urea was done in the first step. However, during the second one, which has led us to change a new nano-functional resin after it's changing, the Microscopic structural characterization was obtained not only by using spectroscopy Fourier Transform Infra-Red (FTIR), but also by Nuclear Magnetic Resonance (NMR). Indeed, the characterization of the synthesized product gotten confirmed the final chemical structure of the macromolecular. Finally, the viscosimetric characterization was performed by using the Ubbelohde capillary viscometer.
The definition of a process of conditioning by cementation of solid radioactive waste has required many works intended research optimize the composition of matrices and improved their resistance. In this work, we introduced the polymer (epoxy Novolac resin) and / or epoxy Novolac composite material in a nuclear application to assess its impact. Following a research study on the management of ion exchange resins, radioactive waste generated by the Triga Mark II reactor CNESTEN, this study is an add-in to improve the compressive strength of the matrix conditioning the ion exchange resin by the introduction of the epoxy Novolac polymer and to evaluate its impact on the die packaging.
this work, we studied two types of compounds used in the protection of iron surface. The first type was performed on the organophosphate models, and the second based epoxy resins functional TGPO/HGAPPO. Thereafter we used the Quantitative Structure-Property Relationship Approach (QSPR) to connect The properties with descriptors to predict the polarization resistance to corrosion and inhibition of structures studied. To do this, we calculated the quantum chemical properties using the Gaussian 03 software hybrid B3LYP with 6-31 G (d) basis set with the aim of comparing the polarization resistance of two epoxy resins with those of phosphorus two organic phosphorus inhibitors. In addition, the electronic properties such as the highest occupied molecular orbital (HOMO), lowest unoccupied orbital (LUMO) energy and the molecular density were studied. We found as results of this study that the organophosphorus epoxy resin is very effective than the organic compounds studied.
The objective of this work is to study the thermosetting composites, the case of polyepoxides based on novolac hydroxide in presence of tri-sodium phosphate loads. Our work is to make three samples of a composite based on synthesized novolac polyepoxide by the polycondensation of a polycr
With the aim of optimizing the formulation of the matrix of the conditioning of Resins exchanges of ions (MBD-15) considered as radioactive waste generated by the nuclear reactor TRIGA MARK II of CENM, on one hand we realized several essays by fixing the percentage of cement and by modifying the percentages of resins to be confined (0 %, 4 %, 6 %, 8 %, 10 %, 12 %, and 14 %) and that some water. On the other hand, we realized another essay to illustrate the role of an aggregate such as the sand in the matrix of the cement. The moderate answer of all the realized essays is estimated by the compression resistance of the matrix after a time of 7 days, 14 days and 28 days of seclusion. The obtained results raise us that the maximum of the quantity of the REI, which we can incorporate into a formulation without the parcel loses its resistance is 12 %. The addition of an aggregate in the matrix of cement increases the compression resistance of this one.
In order to optimize the thermal stability of the polyepoxide matrix standard and industrial of the base, we developed composite and nanocomposite oxides with respect to the polymer's matrix, DGEBA and DGETBBA then DGETBBA and a very fine powder of Zn, following many formulations. The first formulation series are based on the mixture of the diglycidylether of bisphenol A (DGEBA) and diglycidylether Tetrabromo bisphenol A (DGETBBA), cross linked with methylene dianiline (MDA) as an enuring agent. In the second series, we have optimized the composition of a formulation based system DGETBBA / MDA and the inorganic filler in powder form based on zinc (Zn). The study of the thermal behavior of formulated materials was evaluated by thermogravimetric analysis (TGA) under dynamic conditions. The results show that the thermal stability was confirmed by the increase of the degradation onset temperature (TD) of the studied systems over standard macromolecular matrices.
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