Optimization of hydrochar synthesis conditions for enhanced Cd(II) and Pb(II) adsorption in mono and multimetallic systems.

The characterisation of hydrochars derived from Sargassum biomass collected along the Mexican Caribbean coast reveals their favourable morphology and chemical composition for incorporating metal ions, including Cd(II) and Pb(II). Among the synthesized materials, HCS-3, produced at 180 °C with a 2 h residence time, exhibited superior yield, specific area, carbon content, and capacity for removing Cd(II) and Pb(II). Adsorption equilibrium studies demonstrate the presence of adsorption processes during Cd(II) and Pb(II) retention on HCS-3, with adsorption capacities slightly exceeding 140 and 340 mg g⁻, respectively.

Effectiveness of a natural coagulant based on common mallow () in urban wastewater treatment.

This study evaluated the effectiveness of a natural coagulant based on common mallow () to remove turbidity in urban wastewater. A 2 factorial design was selected to determine the optimal dose and the working pH of the natural coagulant. Its potential was studied in 50.

Binary fluoride and As(V) adsorption in water using pleco fish bone chars.

The present work studied individual and binary adsorption of fluorides and As(V) in water on pleco fish bone chars (BC), as well as the effect of BC mass variation on the adsorption capacity of fluoride and As(V) in water for human consumption. The results of individual adsorption indicated that the adsorption of fluoride and As(V) on BC depends on solution pH. The adsorption capacity of fluorides at an initial concentration of 30 mg L increases approximately 3 times, from 5.

Fundamentals in applications of algae biomass: A review.

Algae play an extremely important ecological role. They form the basis of trophic webs, produce oxygen that allows the respiration of many of the organisms in aquatic environments, absorb CO, and serve as refuge areas and habitats for thousands of species. Many species can also absorb organic pollutants from seawater.

Valorization of Biomass as Potential Material for the Remediation of Heavy-Metals-Contaminated Waters.

algae has become a major environmental issue due to its abundance in the Pacific Ocean with hundreds of tons reaching the beaches of the Mexican Caribbean every year. This generates large quantities of decomposing organic matter that have a negative impact on the region's economy and ecosystems. valorization has turned out to be a fundamental aspect to mitigate its environmental impact.