Textile wastewater discoloration by Fenton oxidation process

Treating industrial wastewater by advanced oxidation processes, is a recent interest primarily for decolorization of aqueous solutions containing dyes. The application of the Fenton reaction is one of these processes, bleaching liquid discharges after a textile dyeing unit in the city of Marrakech, Morocco, which are non-biodegradable, using oxidation by Fenton's reagent has shown its ability to degrade the dyes in water to carbon dioxide, water, and other harmless products. In this study a serie of pure dyes mineralization experiments used in the dyeing process, such as: the Bezaktiv BLUE-SR, the NOVACRON® Red FN-R, and the NOVACRON®SCALE TFN-6G, and a global liquid discharge containing dyes and chemical additives. Fenton's method is effective at pH = 3, as a result, we had a total discoloration for the three pure colors, and up to 47% to the overall rejection for 60 minutes at room temperature, and 100%  when the temperature was increased to 60 °C. The presence of chemical additives disadvantage Fenton oxidation

La figue de Barbarie: valorisation d’un produit de terroir issu d’une culture adaptée aux défis climatiques dans la région d’OuledDlim - Sud du Maroc

21-23 octobre 2014International audienc

Comparative sorption isotherms of conserved Thymus satureioides

Thymus satureioides is an endemic plant of Morocco used for its virtues in traditional medicine. This natural plant in comparison with the preserved one by gamma irradiation and thermal-biochemical treatment using a solar dryer, were investigated at various temperatures and water activity using a saturated salt solution method. Thus, it was necessary to study the effect of preservation processes on the storage conditions. The sorption curves of thyme decreased with the increase in temperature at constant relative humidity and the hysteresis effects were observed. The experimental data of sorption were described by six equations. The Enderby’s model was found to be the most suitable for describing the sorption curves for untreated and irradiated thyme. In opposition, treated thyme was approached by Peleg’s model. Moreover, the optimum water activity of storage was investigated.

Arabinan-rich polysaccharides isolated and characterized from the endosperm of the seed of <i>Opuntia ficus-indica</i> prickly pear fruits

International audienc

Isolation and structure characterization of a (4-O-methyl-D-glucurono)-D-Xylan from the skin of <i>Opuntia ficus-indica</i> prickly pear fruits

International audienc

Microfibrillated cellulose from the peel of prickly pear fruits

International audienc

Isolation and structure of D-xylans from pericarp seeds of <i>Opuntia ficus-indica</i> prickly pear fruits

International audienc

D-Xylans from seed endosperm of <i>Opuntia ficus-indica</i> prickly pear fruits

International audienc

Microfibrillated cellulose from the peel of prickly pear fruits

International audienc

Isolation and structural characterization of protopectin from the skin of <i>Opuntia ficus-indica</i> prickly pear fruits

International audienc