ALICE PETRE

Universidad de Alcala, Department of Chemical Engineering, Faculty Member

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Critical review of technologies for the on-site treatment of hospital wastewater: From conventional to combined advanced processes

Journal of Environmental Management

Inventory and Analysis of Environmental Sustainability Education in the Degrees of the University of Alcalá (Spain)

Sustainability

In order to promote education in environmental sustainability at higher education institutions an... more In order to promote education in environmental sustainability at higher education institutions and establish action priorities, a detailed analysis of the initial situation is needed, both in terms of courses offered and teaching and assessment strategies implemented. This article presents a methodology that can be used to standardize the evaluation of teaching in environmental sustainability at different universities. We exemplify its application at the University of Alcalá, located in Central Spain. The inventory was conducted using in-house software development for the extraction of environmental sustainability concepts in the degree courses’ syllabi, completed with a survey to faculty members and a manual review to confirm its adjustment to environmental issues. Those finally selected were analyzed in depth. The main results indicate that currently, only a small part of the courses (5.5%) offered at the University explicitly include environmental sustainability content. The grad...

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Portafolio discente interdisciplinar en la asignatura de Meteorología, climatología y contaminación atmosférica de Grado en Ciencias ambientales

La relación pedagógica en la universidad, lo transdisciplinar y los estudiantes.: Desdibujando fronteras, buscando puntos de encuentro, 2013, ISBN 978-84-695-8202-2, págs. 456-474, 2013

Cambio de dinámica educativa en una asignatura experimental

La formación y las nuevas tecnologías en la docencia universitaria, 2012, ISBN 978-84-15524-04-5, págs. 353-357, 2012

Hydrogen- and Oxygen-Treated PT/AL2O3 Catalyst

Revue Roumaine De Chimie, 1997

Etude de catalyseurs à base d'oxyde de gallium supporté

Des catalyseurs a base d'oxyde de gallium supporte sur des supports tels que Al2O3, SiO2, TiO... more Des catalyseurs a base d'oxyde de gallium supporte sur des supports tels que Al2O3, SiO2, TiO2, ZrO2,WO3, Nb2O5 de structure et proprietes superficielles differentes ont ete prepares par une methode d'impregnation en milieu aqueux et par une methode innovante de type sol-gel. Differentes techniques d'analyse (AES-ICP, mesure de surface specifique, DRX, spectrometrie infrarouge, XPS, TEM, 71GaRMN) ont ete employees pour l'etude de la structure et du degre de dispersion de l'oxyde de gallium sur la surface des supports. Les proprietes superficielles de nos supports ont influence d'une maniere importante la dispersion de la phase active d'oxyde de gallium. L'acido-basicite des supports, de l'oxyde de gallium massique, ainsi que des catalyseurs contenant des teneurs variables en Ga2O3 a ete analysee par microcalorimetrie d'adsorption couplee a la volumetrie et par spectrometrie infrarouge qui fournit des informations complementaires sur la nature,...

A global multinational survey of cefotaxime-resistant coliforms in urban wastewater treatment plants

Environment International, 2020

The World Health Organization Global Action Plan recommends integrated surveillance programs as c... more The World Health Organization Global Action Plan recommends integrated surveillance programs as crucial strategies for monitoring antibiotic resistance. Although several national surveillance programs are in place for clinical and veterinary settings, no such schemes exist for monitoring antibiotic-resistant bacteria in the environment. In this transnational study, we developed, validated, and tested a low-cost surveillance and easy to implement approach to evaluate antibiotic resistance in wastewater treatment plants (WWTPs) by targeting cefotaxime-resistant (CTX-R) coliforms as indicators. The rationale for this approach was: i) coliform quantification methods are internationally accepted as indicators of fecal contamination in recreational waters and are therefore routinely applied in analytical labs; ii) CTX-R coliforms are clinically relevant, associated with extended-spectrum β-lactamases (ESBLs), and are rare in pristine environments. We analyzed 57 WWTPs in 22 countries across Europe, Asia, Africa, Australia, and North America. CTX-R coliforms were ubiquitous in raw sewage and their relative abundance varied significantly (< 0.1% to 38.3%), being positively correlated (p < 0.001) with regional atmospheric temperatures. Although most WWTPs removed large proportions of CTX-R coliforms, loads over 10 3 colony-forming units per mL were occasionally observed in final effluents. We demonstrate that CTX-R coliform monitoring is a feasible and affordable approach to assess wastewater antibiotic resistance status.

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Ozonation as pre-treatment of activated sludge process of a wastewater containing benzalkonium chloride and NiO nanoparticles

Chemical Engineering Journal, 2016

BAC was significantly removed by ozonation. BAC degradation pathway and ozone dose were influence... more

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Personal care product preservatives: Risk assessment and mixture toxicities with an industrial wastewater

Water Research, 2015

The aquatic toxicity of eight preservatives frequently used in personal care products (PCPs) (iod... more The aquatic toxicity of eight preservatives frequently used in personal care products (PCPs) (iodopropynyl butylcarbamate, bronopol, diazolidinyl urea, benzalkonium chloride, zinc pyrithione, propylparaben, triclosan and a mixture of methylchloroisothiazolinone and methylisothiazolinone) was assessed by means of two different approaches: a battery of bioassays composed of single species tests of bacteria (Vibrio fischeri and Pseudomonas putida) and protozoa (Tetrahymena thermophila), and a whole biological community resazurin-based assay using activated sludge. The tested preservatives showed considerable toxicity in the studied bioassays, but with a marked difference in potency. In fact, all biocides except propylparaben and diazolidinyl urea had EC50 values lower than 1 mg L -1 in at least one assay. Risk quotients for zinc pyrithione, benzalkonium chloride, iodopropynyl butylcarbamate and triclosan as well as the mixture of the studied preservatives exceeded 1, indicating a potential risk for the process performance and efficiency of municipal sewage treatment plants (STPs). These four single biocides explained more than 95% of the preservative mixture risk in all bioassays. Each individual preservative was also tested in combination with an industrial wastewater (IWW) from a cosmetics manufacturing facility. The toxicity assessment was performed on binary mixtures (preservative + IWW) and carried out using the median-effect principle, which is a special case of the concept of Concentration Addition (CA). Almost 70% of all experiments resulted in EC50 values within a factor of 2 of the values predicted by the median-effect principle (CI values between 0.5 and 2). The rest of the mixtures whose toxicity was mispredicted by CA were assessed with the alternative concept of Independent Action (IA), which showed higher predictive power for the biological community assay. Therefore, the concept used to accurately predict the toxicity of mixtures of a preservative with a complex industrial wastewater depends on the degree of biological complexity of the biossay.

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Treatment of a wastewater from a pesticide manufacture by combined coagulation and Fenton oxidation

Environmental Science and Pollution Research, 2014

The treatment of a non-biodegradable agrochemical wastewater has been studied by coupling of prel... more The treatment of a non-biodegradable agrochemical wastewater has been studied by coupling of preliminary coagulation-flocculation step and further Fenton oxidation. High percentages of chemical oxygen demand (COD) removal (up to 58 %) were achieved in a first step using polyferric chloride as coagulant. This reduced significantly the amount of H2O2 required in the further Fenton oxidation. Using the stoichiometric amount relative to COD around 80 % of the remaining organic load was mineralized. The combined treatment allowed achieving the regional discharge limits of ecotoxicity at a cost substantially lower than the solution used so far where these wastewaters are managed as hazardous wastes.

La utilización del Portafolio discente interdisciplinar como metodología en la evaluación de la asignatura de Meteorología, Climatología y Contaminación Atmosférica de Grado en Ciencias Ambientales

Continuous ozonation treatment of ofloxacin: Transformation products, water matrix effect and aquatic toxicity

Journal of Hazardous Materials, 2015

The continuous ozonation of the antibiotic ofloxacin (OFX) has been performed using a synthetic w... more The continuous ozonation of the antibiotic ofloxacin (OFX) has been performed using a synthetic water matrix and in a sewage treatment plant (STP) effluent. The aim was to study the effect of the water matrix on the ozonation with particular emphasis on the aquatic toxicity of treated water. OFX was completely removed in both water matrices, although the amount of ozone consumed for its depletion was strongly matrix-dependent. The extent of mineralization was limited and a number of intermediate transformation products (TPs) appeared, twelve of which could be identified. OFX reaction pathway includes the degradation of piperazinyl and quinolone moieties. The further oxidation of TPs gave rise to the formation and accumulation of carboxylic acids, aldehydes, nitrogen-containing organic compounds and inorganic ions. Aquatic toxicity of treated mixtures was assessed using four standard species: the bacteria Vibrio fischeri and Pseudomonas putida as target organisms and the algae Pseudokirchneriella subcapitata and the protozoan Tetrahymena thermophila as non-target organisms. OFX was toxic for the bacteria and the microalgae at the spiked concentration in untreated water. However, the continuous ozonation at the upper operational limit removed its toxic effects. T. thermophila was not affected by OFX, but was sensitive to STP effluent.

A bacterium-based contact assay for evaluating the quality of solid samples-Results from an international ring-test

Journal of hazardous materials, Jan 15, 2018

The contact assay measuring the inhibition of Arthrobacter globiformis dehydrogenase activity as ... more The contact assay measuring the inhibition of Arthrobacter globiformis dehydrogenase activity as an endpoint to evaluate the toxicity of solid samples was tested in an international ring-test to validate its performance for ISO standardization (ISO/CD 18187). This work reports the results of the ring-test involving 9 laboratories from six countries. At least 8 valid data sets were obtained for each sample and more than three quarters of the participants attained the validity criteria defined in the standard. The coefficient of variation within (CV) and between (CV) laboratories was generally on average <15% and <30% for negative and positive controls, respectively. Regarding solid samples, the laboratories provided a similar ranking of the samples based on their toxicity, despite some variation in the LOEC values. The logarithmic within-lab standard deviation <0.50 for soils and <0.25 for wastes evidenced a good repeatability. The between-lab variability assessed by a CV...

The thermooxidative degradation of polyvinyl chloride

Revue Roumaine de Chimie

ABSTRACT

Single-step synthesis of porous supported catalysts

Studies in Surface Science and Catalysis, 2006

Trabajo en equipo en el laboratorio químico: evaluación integrada de profesores y alumnos para asignar calificación individual

Delineando Lazos Hacia Nuevas Propuestas Innovadoras Recurso Electronico La Interdisciplinariedad Como Punto De Partida 2013 Isbn 978 84 15834 03 8 Pags 293 302, 2013

Acid-Base Properties of Alumina-Supported M 2 O 3 (M=B, Ga, In) Catalysts

Topic Catalysis, 2002

The acid-base properties of -Al 2 O 3 and alumina-supported B 2 O 3 , Ga 2 O 3 and In 2 O 3 have ... more The acid-base properties of -Al 2 O 3 and alumina-supported B 2 O 3 , Ga 2 O 3 and In 2 O 3 have been determined by microcalorimetry of ammonia and sulfur dioxide adsorption. From the adsorption of NH 3 , it was found that the addition of B 2 O 3 on alumina leads to an increase of the number of acid sites, while Ga 2 O 3 and In 2 O 3 additives caused a decrease in the acidity of alumina. Using SO 2 as a probe molecule to study the basicity, the number of surface basic sites on alumina was found to be strongly decreased by the addition of boron oxide, while it was only slightly affected by the addition of gallium oxide and decreased by the addition of indium oxide. The differential heats of adsorption are discussed as a function of the coverage by the probe molecules. The electronic properties of the oxides are examined in order to explain the acid-base properties of the supported oxides.

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Sapere aude "Atrévete a saber

Delineando Lazos Hacia Nuevas Propuestas Innovadoras Recurso Electronico La Interdisciplinariedad Como Punto De Partida 2013 Isbn 978 84 15834 03 8 Pags 515 524, 2013

Oscillations of electrical conductivity in the SnO2/O-2 system in the presence of moisture

Revue Roumaine de Chimie

ABSTRACT

Influence du support sur les propriétés superficielles et catalytiques de catalyseurs à base d'oxyde de gallium supporté

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