Competitive biosorption of Cu2+ and Ag+ ions on brown macro-algae waste: kinetic and ion-exchange studies

Efficient Removal of Metals from Synthetic and Real Galvanic Zinc–Containing Effluents by Brewer’s Yeast Saccharomyces cerevisiae

“…Zinc biosorption by S. cerevisiae led to a decrease of potassium and magnesium content in biomass [ 18 ]. Calcium and sodium were released in a considerable amount at copper biosorption by Sargassum filipendula [ 19 ].…”

Biosorption: A Review of the Latest Advances

“…Taking this into account, factors such as pH, temperature (thermodynamic studies), contact time, shaking speed, initial concentration of the pollutant or amount of biosorbent are well known and are evaluated to optimize the biosorption process [23]. However, there are other less studied factors that have an impact on the process-for example, the type and amount of functional groups in the biomass such as carboxyl, amino, phosphoryl or sulfonate and that influence the biosorption of some pollutants (mainly metals) [9,31,39], ionic strength [40], presence of dissolved organic matter that alters the absorption of metals [41] or the competition with other pollutants [40,42,43]. When using a living system, it is necessary to consider other factors such as the response to the possible toxicity of the pollutant [44,45].…”

“…Other biomasses that were also tested to assess copper biosorption were Chlorella pyrenoidosa, reaching 0.48 mmol/g [41] and Ochrobactrum MT180101: in this strain, there were several mechanisms involved in the biosorption of this metal: surface biosorption, extracellular chelation and bienzyme-mediated biotransformation, which supposes a superior efficiency in the copper biosorption [5]. The commercial biomass of the yeast Saccharomyces cerevisiae Perlage ® BB with a maximum biosorption capacity of 4.73 mg/g [113], dead biomass of Penicillium ochrochloron with an average biosorption capacity of 7.53 mg/g [114], Sargassum filipendula [42] and alginate-based biosorbent produced from seaweed Sargassum sp. with a maximum biosorption capacity of 1.64 mmol/g [70] are recent examples of different biomasses that have been evaluated to determine their capacity as copper biosorbents.…”

Biological Activities of Sargassum Algae Mediated ZnO and Co Doped ZnO Nanoparticles as Enhanced Antioxidant and Anti-Diabetic Agents

“…The detected broad band with an area from 3200 to 3600 cm −1 implies the stretching vibration of N-H and O- Previous findings were also based on the FT-IR spectra of the synthetic materials compared to the obtained spectrum of brown macroalgae (Figure 2). The detected broad band with an area from 3200 to 3600 cm −1 implies the stretching vibration of N-H and O-H bonds within the alginate, lipid, protein, and cellulose compounds of the algae structure (Figure 2A) [35,36]. Additionally, other organic chemical groups were clearly identified from the spectrum of BMG, such as aliphatic -CH 2 -(2920 cm −1 ), asymmetrical carboxylate groups (1643 cm −1 ), symmetrical carboxylate groups (1447 cm −1 ), sulfate esters within the fucoidan structure (1256 cm −1 ), sulfonic acids (SO 3 ) (1161 cm −1 ), alcoholic groups (1064 and 1021 cm −1 ), and mannuronic groups of alginate structure (863 cm −1 ) (Figure 2A) [36][37][38].…”