Development of A New Biosorbent Based on The Extract Residue of Marine Alga Sargassum Vulgare: Application in Biosorption of Volatile Organic Compounds

The objective of this study is the valorization of a sub-product of marine alga it is the extract residue of the marine alga Sargassum vulgare, which represents more than 80% of the weight of the raw material. It is a natural residue thatnbsp wenbsp couldnbsp turnnbsp into nbspbiosorbentnbsp undernbsp thenbsp effectnbsp ofnbsp chemicalnbsp activationnbsp withnbsp phosphoricnbsp acidnbsp whichnbsp allowsnbsp the development of a large pore in the activated material.nbsp To optimize the conditions for elaboration of our biosorbent, experimental design was applied to reduce the number of experiment trials needed to evaluatenbsp some parameters (percentage of phosphoric acid, temperature and time of activation) and theirnbsp effects on the responses (capacity of biosorption of methylene blue, yield biosorbent).nbsp The product obtained under the optimal conditions has good textural and structural properties and development of surface functions.nbsp The application of optimized biosorbent in the treatment of gaseous effluents, has revealed its efficiency and significant biosorption properties towards some volatile organic compounds i .e.nbsp the toluene, the cyclohexane and the ethylbenzene

Extraction and Recovery of Bioactive Metabolites from Marine Spongeand#8220;Ircinia spinulosaand#8221;

Oceans cover more than 75% of our planet. In some ecosystems, such as coral reefs, experts believe that biodiversity is greater than that of tropical forests. Morocco, with its double facade Atlantic and Mediterranean, long of more than 3500 km, is a country deeply influenced by the sea, which implies the existence of thousands of marine species by reports in other countries. Currently, marine organisms are a very important source of new molecules in pharmacology and thus in the development of new bioactive products. Sponges, in particular, given their very primitive origin and persistence during evolution, have developed a chemical defense system. This study aims the biological valorization of crude extract from a marine sponge collected in Atlantic coastal El Jadida: Ircinia spinulosa. The chemical study of Ircinia spinulosa, marine sponge was realized for the first time in Morocco, and revealed that this sponge contains different levels of primary and secondary metabolites. Analysis of fatty acids in the lipid extract of Ircinia spinulosa is performed by gas chromatography coupled with mass spectrometry (GC-MS) was used to determine the predominance of acid Palmitic. This molecular diversity of sponges has a large deposit of biological and biomedical potential. What pushed us to continue the research to isolate new and original molecules

Extraction and Recovery of Bioactive Metabolites from Marine Spongeand#8220;Ircinia spinulosaand#8221;

Oceans cover more than 75% of our planet. In some ecosystems, such as coral reefs, experts believe that biodiversity is greater than that of tropical forests. Morocco, with its double facade Atlantic and Mediterranean, long of more than 3500 km, is a country deeply influenced by the sea, which implies the existence of thousands of marine species by reports in other countries. Currently, marine organisms are a very important source of new molecules in pharmacology and thus in the development of new bioactive products. Sponges, in particular, given their very primitive origin and persistence during evolution, have developed a chemical defense system. This study aims the biological valorization of crude extract from a marine sponge collected in Atlantic coastal El Jadida: Ircinia spinulosa. The chemical study of Ircinia spinulosa, marine sponge was realized for the first time in Morocco, and revealed that this sponge contains different levels of primary and secondary metabolites. Analysis of fatty acids in the lipid extract of Ircinia spinulosa is performed by gas chromatography coupled with mass spectrometry (GC-MS) was used to determine the predominance of acid Palmitic. This molecular diversity of sponges has a large deposit of biological and biomedical potential. What pushed us to continue the research to isolate new and original molecules

Evaluation of Bacteriological Parameters of Water Quality in The Bouregreg Estuary Along the Moroccan Atlantic Coast

On the Morrocan Atlantic coast, the Bouregreg estuary was submitted to many anthropic effects. After the dam Sidi Mohammed ben Abdellah was built in 1974, the flow became almost null. The waters of the estuary are meant for recreational activities, fishing, but at the same time they receive water collecting domestic and industrial wastewater. The waste in old landfills was not treated and leaked into the river water. The matter gets worse with the action of tides which make it difficult to escape the pollution load (physicochemical, bacteriological, heavy metals, etc.). The main objective of this study is to monitor the bacteriological quality of the surface waters from Bouregreg estuary (Moroccan Atlantic coast). The bacteriological parameters were determined upstream (S1, S2 and S3) and downstream (S4, S5 and S6) of the Bouregreg estuary. The parameters studied are fecal coliform (FC), fecal streptococci (FS), Salmonella, Staphylococcus aureus and Pseudomonas aeruginosa. The evaluation of the bacterial contamination of the studied water samples shows that the rate of contamination by fecal coliforms is very high in station S3 compared to other stations. This is explained by the emplacement of this station which is located next to a main rejection of Oued Akrach. The bacterial loads are maximal in this station: 7 103 CF/100ml for fecal coliforms and 2 103 SF/100ml for fecal streptococci. The ratio values (CF/SF) for the different stations show that the fecal pollution observed at the studied estuary is of mixed origin with human dominance. The search for pathogenic bacteria namely Salmonella, Staphylococcus aureus and Pseudomonas aeruginosa, was negative for all the studied samples