Sonolytic degradation of benzophenone-3 in water matrices: Reaction mechanism, transformation products, ecotoxicological implications & microplastic interaction.

The degradation of the UV filter benzophenone-3 (BP-3) by low-frequency ultrasound was investigated in different aqueous matrices. BP-3 sonodegradation followed pseudo-first-order kinetics, achieving >97 % removal of 500 μg L of BP-3 within 120 min in ultrapure water (UPW), using a 20 kHz ultrasound horn at 71 W L. Varying the initial pH from 3 to 6 and 9 had only a slight effect on the process efficacy, with corresponding kinetic constant rates of 0.

Cross-Cultural Validation of the Sexting Behaviors and Motives Questionnaire (SBM-Q).

Background: The proliferation of sexting among adolescents around the world today has woven a complex tapestry of sexual expression and exploration. However, its implications extend beyond consensual engagement, occasionally manifesting as a form of cyberviolence. Varied prevalence rates further complicate our understanding of the extent of youth sexting worldwide.

Cyberbullying Experiences: Whether and How Do the Need for Popularity and Emotional Intelligence Dimensions Affect Them?

The need for popularity and emotional intelligence (EI) have been shown to be relevant factors in relation to aggressive behavior, including cyberbullying. However, the need for popularity and EI have not yet been explored together in relation to cyberbullying victimization and perpetration in adolescence. This research attempts to examine whether the need for popularity was a relevant mediating variable in the link between EI dimensions and both cybervictimization and cyberbullying perpetration, and to identify possible gender differences.

Natural magnetite as an effective and long-lasting catalyst for CWPO of azole pesticides in a continuous up-flow fixed-bed reactor.

The global occurrence of micropollutants in water bodies has raised concerns about potential negative effects on aquatic ecosystems and human health. EU regulations to mitigate such widespread pollution have already been implemented and are expected to become increasingly stringent in the next few years. Catalytic wet peroxide oxidation (CWPO) has proved to be a promising alternative for micropollutant removal from water, but most studies were performed in batch mode, often involving complex, expensive, and hardly recoverable catalysts, that are prone to deactivation.

Structured Reactors Based on 3D Fe/SiC Catalysts: Understanding the Effects of Mixing.

The application of structured reactors provides a number of advantages in chemical processes. In this paper, two different three-dimensional (3D) Fe/SiC catalysts with a square cell geometry have been manufactured by Robocasting: monoliths ( = 14 and = 15 mm) and meshes ( = 24 and = 2 mm) and studied in the catalytic phenol oxidation by hydrogen peroxide (HO) for the sustainable production of dihydroxybenzenes (DHBZ). The fluid dynamics, catalytic performance, reaction rates, external mass transport limitation, and catalyst stability have been compared in three different reactors, monolithic fixed-bed reactor, multimesh fixed-bed reactor, and monolithic stirrer reactor, at selected operating conditions.

Photo-Fenton oxidation of cylindrospermopsin at neutral pH with LEDs.

Cylindrospermopsin (CYN) is a potent cyanobacterial toxin found in freshwaters worldwide. In this work, the feasibility of the photo-Fenton process under neutral pH using light emitting diodes as irradiation source for the removal of this hazardous cyanotoxin from freshwater was investigated. The impact of the kind of iron chelating agent (ethylenediamine-N, N'-disuccinic acid vs.

Insights into the degradation of microplastics by Fenton oxidation: From surface modification to mineralization.

This work aims at evaluating the fate of microplastics (MPs) along Fenton oxidation. For such goal, realistic MPs (150-250 μm) of five representative polymer types (PET, PE, PVC, PP and EPS) were obtained from commercial plastic products by cryogenic milling. Experiments (7.

3D-Printed Fe/γ-AlO Monoliths from MOF-Based Boehmite Inks for the Catalytic Hydroxylation of Phenol.

The synthesis of dihydroxybenzenes (DHBZ), essential chemical reagents in numerous industrial processes, with a high degree of selectivity and yield from the hydroxylation of phenol is progressively attracting great interest in the catalysis field. Furthermore, the additive manufacturing of catalysts to produce 3D printed monoliths would provide additional benefits to enhance the DHBZ synthesis performance. Herein, 3D cellular Fe/γ-AlO monoliths with a total porosity of 88% and low density (0.

Adsorption of micropollutants onto realistic microplastics: Role of microplastic nature, size, age, and NOM fouling.

This work aims at evaluating the role of nature, size, age, and natural organic matter (NOM) fouling of realistic microplastics (MPs) on the adsorption of two persistent micropollutants (diclofenac (DCF) and metronidazole (MNZ)). For such goal, four representative polymer types (polystyrene (PS), polyethylene terephthalate (PET), polypropylene (PP) and high-density polyethylene (HDPE)) were tested. MPs were obtained by cryogenic milling of different commercial materials (disposable bottles, containers, and trays), and fully characterized (optical microscopic and SEM images, FTIR, elemental analysis, water contact angle and pH).

Intimate Partner Aggression Committed by Prison Inmates with Psychopathic Profile.

Psychopathy and intimate partner aggression (IPA) are two concepts that usually appear concomitantly. Male violence toward women is often considered a psychopathic trait that sometimes involves the woman's homicide by her partner and, at other times, attempted homicide. This phenomenon has been studied by conducting interviews following Hare's model with 92 men incarcerated under a compliance regime in a Spanish prison (Córdoba).

The photocatalytic reduction of NO to N with ilmenite (FeTiO3): Effects of groundwater matrix.

This work analyzes the role of natural groundwater, as well as the effect of HCO, Ca, Mg, K, SO and Cl concentrations, upon the photocatalytic nitrate reduction using ilmenite as catalyst and oxalic acid as hole scavenger. The nitrate removal and the selectivity towards N are significantly limited compared to previous experiments using ultrapure water matrix. Calcium (Ca), bicarbonate (HCO) as well as pH are claimed as the major controlling factors related to the process yield.

A comparative study among catalytic wet air oxidation, Fenton, and Photo-Fenton technologies for the on-site treatment of hospital wastewater.

The feasibility of catalytic wet air oxidation, intensified homogeneous Fenton and heterogeneous Photo-Fenton systems for the treatment of real hospital wastewater has been investigated. Wastewater samples were collected from a hospital sewer, during a weekly monitoring program, and fully characterized. Up to seventy-nine pharmaceuticals, including mostly parent compounds and some of their transformation products, were analyzed.

Validation of the Sexting Behavior and Motives Questionnaire(SBM-Q).

Background: Sexting has garnered interest from the public and the scientific community given its ever-increasing presence in adolescents' lives. However, analysis varies depending on the baseline study used. This calls for a standardised sexting instrument that addresses scientific evidence-based recommendations.

Parental Supervision: Predictive Variables of Positive Involvement in Cyberbullying Prevention.

From an increasingly early age, parents face the challenge of educating their sons and daughters to act in the world of offline and online relationships. If for professional educators it is not proving easy, the involvement and guidance of parents in their children's use of the internet seems to be a complex and unexplored challenge. This work aims to analyse the variables that influence digital education and determine a predictive model of positive parental involvement.

Overview of toxic cyanobacteria and cyanotoxins in Ibero-American freshwaters: Challenges for risk management and opportunities for removal by advanced technologies.

The increasing occurrence of cyanobacterial blooms worldwide represents an important threat for both the environment and public health. In this context, the development of risk analysis and management tools as well as sustainable and cost-effective treatment processes is essential. The research project TALGENTOX, funded by the Ibero-American Science and Technology Program for Development (CYTED-2019), aims to address this ambitious challenge in countries with different environmental and social conditions within the Ibero-American context.

Diclofenac photodegradation with the Perovskites BaFeTiO as catalysts.

Perovskite oxides BaFeTiO, with y = 0, 0.6, 0.8 and 1, were prepared by ceramic (CM) and complex polymerization methods (CPM) and utilized in UV-LED (365 nm) photocatalytic degradation assays of 25 mg L diclofenac (DIC) model solutions.

Sexting Among Adolescents: The Emotional Impact and Influence of the Need for Popularity.

Sexting refers to the exchange of sexual content material technological devices. The definitions of this phenomenon vary greatly, mainly, depending on the types of sexting: primary and secondary. Besides the above, there is no common perspective on whether sexting is a risk behavior that entails some type of impact by itself or not and, in such a case, whether this impact varies according to gender.

Coupled heat-activated persulfate - Electrolysis for the abatement of organic matter and total nitrogen from landfill leachate.

This work analyzes the viability of a coupled heat-activated persulfate (PS) and electro-oxidation treatment toabatetheorganic matter and nitrogen from ahigh polluted landfill leachate (5500 mg L TOC; 5849 mg L TN, pH: 8.4). These characteristics makes PS as a suitable oxidant to deal with the recalcitrant organic matter.

Degradation of widespread cyanotoxins with high impact in drinking water (microcystins, cylindrospermopsin, anatoxin-a and saxitoxin) by CWPO.

The occurrence of harmful cyanobacterial blooms has unabated increased over the last few decades, posing a significant risk for public health. In this work, we investigate the feasibility of catalytic wet peroxide oxidation (CWPO) promoted by modified natural magnetite (FeO-R400/HO), as an inexpensive, simple-operation and environmentally-friendly process for the removal of the cyanotoxins that show the major impact on drinking water: microcystins (MC-LR and MC-RR), cylindrospermopsin (CYN), anatoxin-a (ATX) and saxitoxin (STX). The performance of the system was evaluated under ambient conditions and circumneutral pH (pH = 5) using relevant cyanotoxin concentrations (100-500 μg L).

Evaluation of photoassisted treatments for norfloxacin removal in water using mesoporous FeO-TiO materials.

We report the synthesis of mesoporous TiO and mesoporous FeO-TiO catalysts by using a structure-directing-surfactant method, their characterization and their employment as photocatalysts for norfloxacin degradation in aqueous solution. The main findings show that in the presence of both O and HO, Fe-containing mesoporous titania (FeO-TiO), with iron percentages between 1 and 3 wt%, exhibited norfloxacin degradation rates more than 60% greater than otherwise identical mesoporous titania without iron. Furthermore, the activity of the mesoporous composite catalysts also exceeds that of titania when illuminated with 405 nm light-emitting diodes.

Coupled fenton-denitrification process for the removal of organic matter and total nitrogen from coke plant wastewater.

This work assesses the feasibility of applying a Coupled Fenton-Denitrification (CFD) process for the treatment of wastewater from a coking plant. This highly toxic effluent is characterized by comparable carbon and nitrogen contents and it is usually released into the treatment system at well above room temperature. Recalcitrant organic matter can be easily removed in a first step using Fenton treatment.

Ethnic-Cultural Bullying Versus Personal Bullying: Specificity and Measurement of Discriminatory Aggression and Victimization Among Adolescents.

The present study contrasts personal bullying with ethnic-cultural bullying. A representative pluricultural sample from a Spanish adolescent population of Secondary Education took part in the study ( = 27369). The sample filled in the EBIPQ to measure personal bullying.

Asegúrate: An Intervention Program against Cyberbullying Based on Teachers' Commitment and on Design of Its Instructional Materials.

This article presents the impact on cyberbullying of the Asegúrate program. This educational program is based on the theory of normative social behavior, self-regulation skills, and the beliefs held by adolescents and consists in a whole package of strategies and resources to help teachers to include in the ordinary curricula. The evaluation of Asegúrate was carried out with a sample of 4779 students (48.

Landfill leachate treatment by sequential combination of activated persulfate and Fenton oxidation.

This work assesses the feasibility of sequential persulfate and Fenton oxidation for the decolorization and mineralization of landfill leachate (5600 mg L TOC; pH: 8.6) in a continuous batch-recirculation system. Firstly, it was analyzed the role of the operational conditions upon the persulfate activation evaluating the effects of electrolysis, ilmenite (FeTiO) as a source of Fe(II) and UV-LED (at 365 nm).

Fast degradation of diclofenac by catalytic hydrodechlorination.

Aqueous-phase catalytic hydrodechlorination (HDC) has been scarcely explored in the literature for the removal of chlorinated micropollutants. The aim of this work is to prove the feasibility of this technology for the fast and environmentally-friendly degradation of such kind of compounds. Diclofenac (DCF), a highly consumed anti-inflammatory drug, has been selected as the target pollutant given its toxicity and low biodegradability.