Copper(II) ion removal from aqueous solutions using biosorption technology: thermodynamic and SEM–EDX studies

Sesame Husk as Adsorbent for Copper(II) Ions Removal from Aqueous Solution

“…However, further increasing of the copper ions concentration from 70 mg/L to 100 mg/L leads to decreasing in q e value as observed where at a high certain concentration (70 mg/L), the active adsorption sites became saturated [93] [98]; after which, q e decreases. Similarly, Ang et al [100] determined the copper(II) adsorption effect by the neem leaf powder (NLP). Results showed that the adsorption capacity is increased with increasing the initial copper(II) ions concentration until it reaches maximum then decreased due to saturation of active groups.…”

“…Besides, bonds are ruptured at higher temperature so desorption is favored [100]. Additionally on increasing the temperature, the thickness of the boundary layer decreases because the metal ions tend increasingly to flee from the biomass surface to the solution phase which limits the adsorption capacity…”

Valorization of Biomass into Micronutrient Fertilizers

“…[2], Sargassum sp. [8] neem leaf [9], Saccharomyces cerevisiae [3] while there is no information about its application in the investigation of chemical composition of berries seeds. Since the last 5 years, there were 8592 published articles about biosorption studies, SEM-EDX technique was used only in 92 (about 1%).…”

Highly Efficient Adsorption of Cd(ii) From Aqueous Solutions by Aluminum Oxide Nanoparticles

“…A variety of adsorbents, including clays, zeolites, dried plant parts, agricultural waste biomass, biopolymers, metal oxides, microorganisms, sewage sludge, fly ash, activated carbon have been used for cadmium removal. [6][7][8][9] In recent years nanoparticles and modified nanoparticles are a new challenge in adsorption methods. Nanoparticles have unique large surface areas, well-defined pore sizes, high pore volume and high adsorption capacity, ease of modification and diversity in surface functionalization Therefore, they can also be functionalized to increase affinity to metal ions and improved selectivity in removal of metal ions.…”