Online ISSN: 2515-8260

Keywords : Adsorption


ADSORPTION HEAVY METALS THROUGH THE USE OF A NATURAL BIOPOLYMER, (COCOA SHELL). FRON CONTAMINATED WATERS

Walther B. Aparicio Aragón; Tania Deza Ramos

European Journal of Molecular & Clinical Medicine, 2021, Volume 8, Issue 1, Pages 1366-1373

The heavy metals found in contaminated waters are dangerous for the environment and human health, so it is necessary to seek and apply techniques to remove these pollutants, using adsorption techniques with natural biopolymers such as cocoa shells,characterizing the adsorption by infrared spectroscopy, obtaining values of (k) Freundlich's constant whose highest value is for the lead cation and the lowest for the more hydrated cation such as copper, presenting an opposite behavior for the exponent "n" of Freundlich's equation. The use of the cocoa shell as an adsorbent is an alternative to remove these contaminants from the water

Antimicrobial applications of green synthesized zinc oxide nanoparticles

R. Devanathan; B. Vivekanandhan; S. Rengadurai; R. Lakshmipathy; G.L. Balajia

European Journal of Molecular & Clinical Medicine, 2020, Volume 7, Issue 4, Pages 1314-1321

Zinc oxide (ZnO) nanoparticles were fabricated by green process in presence of aqueous extract of Watermelon rind. High Performance Liquid Chromatography technique was used to assess the biomolecule content of the aqueous extract prepared from watermelon rind. Citrulline an essential amino acid present in watermelon rind was found to act as capping agent for fabrication of ZnO nanoparticles. The shapes of produced ZnO nanoparticles were found to be anisotropic with few nano rods which were confirmed by TEM analysis. The prepared ZnO nanoparticles were used as antimicrobial agent against pathogens. Higher activity was found against S. paratyphi B strains. Further, the ZnO nanoparticles were assessed for its heavy metal removal capacity from aqueous solution. The results suggest that watermelon rind can be a potential precursor for fabrication of ZnO nanoparticles with versatile applications.