Adsorption of Estradiol by Natural Clays and Daphnia magna as Biological Filter in an Aqueous Mixture with Emerging Contaminants

Abstract

Among emerging pollutants, endocrine disruptors such as estradiol are of most concern. Conventional water treatment technologies are not capable of removing this compound from water. This study aims to assess a method that combines physicochemical and biological strategies to eliminate estradiol even when there are other compounds present in the water matrix. Na-montmorillonite, Ca-montmorillonite and zeolite were used to remove estradiol in a medium with sulfamethoxazole, triclosan, and nicotine using a Plackett–Burman experimental design; each treatment was followed by biological filtration with Daphnia magna. Results showed between 40 to 92% estradiol adsorption in clays; no other compounds present in the mixture were adsorbed. The most significant factors for estradiol adsorption were the presence of nicotine and triclosan which favored the adsorption, the use of Ca-montmorillonite, Zeolite, and time did not favor the adsorption of estradiol. After the physicochemical treatment, Daphnia magna was able to remove between 0–93% of the remaining estradiol. The combination of adsorption and biological filtration in optimal conditions allowed the removal of 98% of the initial estradiol concentration.

Performance of Pristine versus Magnetized Orange Peels Biochar Adapted to Adsorptive Removal of Daunorubicin: Eco-Structuring, Kinetics and Equilibrium Studies

“…Application of both sorbents in treating contaminated samples will be controlled by implementing a multivariate-based stratagem. In this itinerary, and in alignment with the greenness preservation, Plackett-Burman design (PBD) will be executed as the screening design, followed by an optimization phase using the desirability function [18,[37][38][39]. The target is to get the utmost response with the lowest possible usage of resources and hence generation of waste.…”

Special Issue: Valorization of Material Waste for Environmental, Energetic, and Biomedical Applications

“…Conventional water treatment technologies are not capable of removing estradiol from water, as indicated Pérez-González et al [7]. Their study aims to assess a method that combines physicochemical and biological strategies to remove estradiol even when there are other compounds present in the water matrix.…”

Ultrafiltration Membranes System: A Proposal to Remove Emerging Pollutants in Urban Wastewater

“…For the first issue, the scientific community is required. In this regard, in recent years, many authors [8][9][10] have developed specific analytical methodologies for the presence of certain CECs in environmental matrices, as well as guidelines for risk analysis in different environmental compartments, life cycle studies, etc.…”