Removal of Drugs from Hospitals Wastewater by Photodegradation

Background: Hospital wastewater (WWs) represents a particular type of effluent, compared with urban wastewater. Hospitals generate on average 750 L of wastewater by the bed and by day so they are 2-5 times higher than urban flow rates, which refer to one inhabitant equivalent (typically included in the interval 120-250 L). This significant quantity of water per day for different purposes and services depending on the activities which take place within the structure. Methods: In our work, we proposed tow methods; the first one is the complexation with CD for the treatment of drugs from Hospital WWs, which makes solid precipitate that can be filtered later. Our second method is the photodegradation of most drugs found in Hospital WWs with a know UV lamp and time for each type of drug elimination. Results: Our result for the first method is the formation of a CD-drug complex as a solid precipitate which will be filtered later and eliminate the solution to be purified. For the second method, the use of the UV lamp at 300 nm gave a degradation of 70% of the drug of the solution after 30 minutes of irradiation. The follow-up of the photodegradation was carried out by UV spectroscopy. Conclusion: The elimination of drugs from hospital waters is essential, the method we have developed on a small scale can be standardized in Algerian hospitals that do not contain hospital water treatment policies, before reaching urban waters. This congress will be the occasion to discuss this national problem and a call of installation of ministry at the level of each hospital

Removal of Copper from Industrial Wastewater and its Relationship with Wilson's Disease

Background:Wilson’s illness, or hepatolenticular degeneration, is an autosomal passive issue that outcomes from an accumulation of copper prevalently in the liver and brain. The aggregation is happen because of imperfect biliary discharge of copper. Current information demonstrates that grown-up people need to ingest about 0.75 mg of copper every day to continue a parity. Because of a hereditary imperfection, people with Wilson’s ailment can't discharge the abundance copper, bringing about a progressive develop of copper in the body. Substantial metals are the most hurtful of the concoction toxins and are of specific worry because of their poison levels to people. From this poisonous metal copper, which has impacts in drinking water on the gastrointestinal tract, yet there is some with respect to the drawn out impacts of copper on delicate populaces, for example, bearers of the quality for Wilson’smalady and other metabolic issue of copper homeostasis. Method:We picked as a characteristic adsorbent in this work the Moringa Oleifera Seeds (MOSs) from Mali assortment, which could be a practical and earth safe strategy for water sanitization. All examinations were directed at room temperature, andafter being permitted to represent two hours, the examples were broke down utilizing the Atomic Absorption Spectrophotometer (AAS). The seeds of Moringawere set up by taking around 1 g of the seed squashed and blending it in with around 20 cm3 of water to be decontaminated in three distinct measuring utensils. Result:The different arrangements after filtration, indicated an expanded thickness in the amount of copper, which demonstrates the viability of the cleansing intensity of the seeds of MO. The best consequences of adsorption were for 30 min of contact time. We had half copper evacuation. The impact of contact time is significant in biosorption investigations to decide the harmony time required for the take-up of metal particles by the MOSs. Conclusion:In this investigation, the MOS from Mali were demonstrated to be a proficient regular adsorbent material of copper from fluid arrangements. The limit of the MOS to evacuate copper relies upon numerous models as; plant assortment and states of examinations. Our examination is going on the investigation of evacuation parameters, for example, contact time, pH, temperature, molecule size, sorbent portion, and introductory metal fixation

« Synthèse et caractérisation de composites biopolymèresmontmorillonite organiquement modifiée. Application à l’adsorption de colorants.

The work carried out in this thesis is part of the development of two different materials for the purpose of their application to the retention of AR42 dye. The first is an organically modified nanocomposite based on bentonite and carboxymethylcellulose. The second material consists of zero valent iron nanoparticles stabilized with carboxymethylcellulose. The prepared materials have been characterized by different techniques: FTIR, DRX, MEB, ATG and BET. The removal of the AR42 dye by the adsorbents was carried out as a function of the influence of various parameters (pH of the solution, the initial concentration of the dye, the contact time, etc.). The results obtained showed the practical interest of the use of these materials in the field of the depollution of contaminated waters.Les travaux réalisés dans cette thèse s’inscrivent dans le contexte d’élaboration de deux matériaux différents dans le but de leur application à la rétention du colorant AR42. Le premier est un nanocomposite à base de bentonite, modifiée organiquement, et de carboxyméthylcellulose. Le deuxième matériau est constitué de nanoparticules de fer zéro valent stabilisées par le carboxyméthylcellulose. Les matériaux préparés ont été caractérisés par différentes techniques : FTIR, DRX, MEB ,ATG et BET. L’élimination du colorant AR42 par les adsorbants a été réalisée en fonction de l’influence de différents paramètres (pH de la solution, la concentration initiale du colorant, le temps de contact, …). Les résultats obtenus ont montré l’intérêt pratique de l’utilisation de ces matériaux dans le domaine de la dépollution des eaux contaminé