Prospecting toxicity of octocrylene in Allium cepa L. and Eisenia fetida Sav.

Octocrylene sunscreen is found in different environmental compartments. Unlike aquatic organisms, there are few studies evaluating the adverse effects caused by this pollutant on terrestrial plants, and no studies on soil fauna. In this study, octocrylene was evaluated at concentrations of 10, 100, and 1000 µg/L for phytotoxicity, cytogenotoxicity, and oxidative stress in Allium cepa L.

Multivariate optimization approach applied to natural polymers from L. and Lam as coagulating/flocculating agents.

In this study, a multivariate experimental design was applied to optimize the operational conditions (seed mass, salt concentration, and pH) to employ L. (carob) and Lam (moringa) as coagulating/flocculating agents for water treatment. Currently, the coagulation stage in water treatment uses aluminium compounds, due to the characteristic reaction to natural alkalinity in raw water, and for its low market value.

Zinc adsorption from aqueous solution on biosorbent from urban pruning waste.

In this study, urban pruning waste biosorbent after thermal activation process was used to remove zinc ion from aqueous solution. The zinc adsorption was fast, with values above 98.0% removal after 5 min.