Cristina Zalazar

Scopus Publications

Vermifiltration for the treatment of water contaminated with acetochlor: A study on the processes’ contributions to its dissipation
Maria Emilia Fernandez, Carolina Elisabet Masin, Agustín Weimer, Eduardo Vidal, María de los Milagros Ballari, Cristina Susana Zalazar
Journal of Environmental Management, 2026
Adsorption, degradation, and synergistic effects of pesticides in biomixtures containing vermicompost from agricultural and urban waste
Aldana Carolina Clebot, Florencia Valentina Magni, Maria Rosa Repetti, Cristina Susana Zalazar, Maria Emilia Fernandez
Journal of Water Process Engineering, 2025
Ecotoxicological Impact of Agro-Industry on Streams From a South American Basin: Amphibian Tadpoles as Indicators of Environmental Health
Ana P. Cuzziol Boccioni, Rafael C. Lajmanovich, María Rosa Repetti, Andrés M. Attademo, Cristina Susana Zalazar, Agustina Manassero, Karen Russell‐White, María V. Lancelle, Ayelén Muchiutti, Evelina J. Leon, Paola M. Peltzer
Water Environment Research, 2025
This study aimed to evaluate complex contamination due to anthropic activities related to urban, industrial and agricultural activities in four streams of Entre Ríos‐Argentina (Las Conchas, LC; Espinillo, ES; Crespo, CR; Las Tunas, LT), being the first one the main water sources of subtropical riparian conservation reserve “Parque Escolar Rural Enrique Berduc” (PEREB). Physicochemical and bacteriological parameters and pesticide residues were studied on sediment and water samples. Toxicity bioassays on Rhinella arenarum tadpoles were performed to analyze ecotoxicological effects. Sediment from LC stream had the highest glyphosate concentration recorded in South American (5002 μg/kg). Bioassays showed lethality (100%) in undiluted CR and LT treatments. Sublethal effects included thyrotoxicosis, neurotoxicity, and genotoxicity on treated ES, CR, and LT tadpoles. These findings highlight the alarming environmental degradation threatening “One health,” emphasizing the need for sustainable practices and severe control by science and government to protect and ecological restore freshwater sources.Summary “Las Conchas” stream, within a natural protected area, showed the highest glyphosate concentration in sediment ever reported in South America. Several physicochemical parameters were outside the quality standards in most of the streams studied, suggesting severe pollution. Sublethal effects in tadpoles included hormonal, enzymatic, and genotoxic disruptions, along with stunted growth and delayed development. The findings emphasize the necessity for stricter agricultural management and monitoring to mitigate pollution in freshwater ecosystems.
Composting-vermicomposting of pigeon dropping waste. A contribution to the reduction of urban contamination
Masin, Carolina Elisabet, Duran, Alejandra, Zalazar, Cristina Susana, Fernandez, Maria Emilia
International Journal of Recycling of Organic Waste in Agriculture, 2025
Purpose: Without a proper treatment, pigeon dropping waste (PDW) in the urban environment is a sanitary risk for the population because of nasty and irritating odors, a very high content of ammonium, and the presence of pathogens. This study deals with the recycling of PDW from a dovecote, situated in a public city plaza, to achieve its stabilization and eliminate sanitary risks. Method: Composting of PDW with other locally available lignocellulosic residues (sawdust and chipped tree pruning) and vermicomposting employing Eisenia fetida earthworms was applied. Two designs were selected for the vermicomposting stage: (1) Sectorized, with a zone with earthworms and another zone of composted PDW with gradual incorporation to the first one and, (2) Integrated, consisting of the composted PDW, with E. fetida in the entire solid. Results: The composting allowed a partial stabilization of the original mix of PDW, given its highly elevated initial content of ammonium (8693 mg kg-1). The combined processes almost eliminated the ammonium present (> 99% reduction) and the action of earthworms shortened the maturation time. Organic matter and electrical conductivity of the solids had important reductions. The treatment affected the resulting characteristics of the solids obtained but the germination index was above 80% in both cases. Conclusions: Both designs allowed the obtention of two mature, non-phytotoxic vermicomposts. The sectorized vermicompost had better properties and had the advantage of being obtained with fewer initial number of earthworms. Research Highlights • Pigeon dropping waste was recycled by combined composting-vermicomposting process. • Two vermicomposts were obtained by different sectorized and integrated designs. • High ammonium content was reduced and nasty odors and pathogens were neutralized. • Sectorized design produced a better vermicompost with fewer number of earthworms. • Undiluted extracts of the vermicomposts rendered germination indexes over 80%.
Bio-transformation of poultry litter and activated sewage sludge to produce biomixtures for the remediation of water polluted with pesticides
Aldana Carolina Clebot, Maria Emilia Fernandez, Florencia Valentina Magni, Maria Rosa Repetti, Cristina Susana Zalazar
Chemosphere, 2024
Vermifiltration for removal of emerging contaminant EDTA (ethylenediaminetetraacetic acid). Kinetics models for adsorption, bio- and vermidegradation
Carolina Masin, Eduardo Vidal, Maria Emilia Fernandez, María de los Milagros Ballari, Cristina Zalazar
Journal of Environmental Chemical Engineering, 2024
Vermistabilization of excess sludge employing Eisenia fetida: Earthworm histopathological alterations and phytotoxicity evaluation
Sofía Nobili, Carolina E. Masin, Cristina S. Zalazar, Maia R. Lescano
Journal of Environmental Management, 2024
Earthworm injury test for in-situ biomonitoring of pesticides in biobeds
Sofía Lammertyn, Florencia V. Magni, Alejandra Durán, María Rosa Repetti, José Luis Godoy, Cristina S. Zalazar
Chemosphere, 2024
Bioremediation of hydrocarbon contaminated soil using local organic materials and earthworms
Sofia Nobili, Carolina Elisabet Masin, Cristina Susana Zalazar, Maia Raquel Lescano
Environmental Pollution, 2022
Biodegradation of pesticide-contaminated wastewaters from a formulation plant employing a pilot scale biobed
Maia Lescano, Nerina Fussoni, Eduardo Vidal, Cristina Zalazar
Science of the Total Environment, 2022
In this work, a pilot biobed was built up to treat pesticide-contaminated wastewaters discharged from a formulation plant. The pre-treated wastewater was spiked with additional pesticides in order to simulate a scenario of higher contamination: glyphosate, atrazine, imidacloprid, prometryn and carbendazim were added to reach a final Total Organic Carbon (TOC) of 70 mg L-1. An Intermediate Bulk Container (IBC) was filled with a biomixture of soil and foxtail millet stubble (50:50% v v-1), and 200 l of the wastewater was added to the system recycling tank. The recirculation to the IBC was established for 12 h. After that (Day 0), the recirculation was turned on during the assay only to maintain the moisture for 180 days. Biomixture and wastewater samples were taken periodically to analyse pesticides and phytotoxicity in both matrices. In addition, hydrolytic and phenoloxidase activities, total bacteria and yeast and fungi communities were determined in the biomixture. The designed pilot scale biobed allowed to treat wastewaters with high concentration of pesticides reaching a complete removal of glyphosate, AMPA, atrazine, carbendazim and prometryn at 180 days. A good degradation percentage of the recalcitrant imidacloprid was achieved (60%) and the biomixture showed enough biological activity to continue treating additional wastewater. The root elongation index from the germination test showed low toxicity on day 180 both in biomixture and wastewater. The millet stubble resulted an appropriate lignocellulosic material to be used in biobeds to treat a wide variety of pesticides. The application of the seed germination test proved to be a low cost and simple tool to determine the end point of process.
Effectiveness of a simple biomixture for the adsorption and elimination of 2,4-dichlorophenoxyacetic acid (2,4-D) herbicide and its metabolite, 2,4-dichlorophenol (2,4-DCP), for a biobed system
Maria Emilia Fernandez, María del Rosario Morel, Aldana Carolina Clebot, Cristina Susana Zalazar, María de los Milagros Ballari
Journal of Environmental Chemical Engineering, 2022
Poultry litter stabilization by two-stage composting-vermicomposting process: Environmental, energetic and economic performance
Rocio Vicentin, Carolina Elisabet Masín, Maia Raquel Lescano, Cristina Susana Zalazar
Chemosphere, 2021
Biomarkers response and population biological parameters in the earthworm Eisenia fetida after short term exposure to atrazine herbicide
Sofía Lammertyn, Carolina Elisabet Masín, Cristina Susana Zalazar, Maria Emilia Fernandez
Ecological Indicators, 2021
Degradation of chlorpyrifos formulation in water by the UV/H2O2 process: Lumped kinetic modelling of total organic carbon removal
Maia R. Lescano, Alejandro O. Lopez, Roberto L. Romero, Cristina S. Zalazar
Journal of Photochemistry and Photobiology A Chemistry, 2021
Earthworms to improve glyphosate degradation in biobeds
Maia R. Lescano, Carolina E. Masin, Alba R. Rodríguez, José L. Godoy, Cristina S. Zalazar
Environmental Science and Pollution Research, 2020
Approach to assess agroecosystem anthropic disturbance: Statistical monitoring based on earthworm populations and edaphic properties
C. Masin, A.R. Rodríguez, C. Zalazar, J.L. Godoy
Ecological Indicators, 2020
Bioconversion of agro-industrial wastes: Combined compost and vermicompost processes using Eisenia fetida for stabilization of poultry litter
C. Masin, María E. Fernández, M. Lescano, C. Zalazar
International Journal of Recycling of Organic Waste in Agriculture, 2020
Preparation and Characterization of Lignin Microparticles-in-Alginate Beads for Atrazine Controlled Release
Carlos Alberto Busatto, María Eugenia Taverna, Maia Raquel Lescano, Cristina Zalazar, Diana Alejandra Estenoz
Journal of Polymers and the Environment, 2019
Glyphosate and aminomethylphosphonic acid degradation in biomixtures based on alfalfa straw, wheat stubble and river waste
M.R. Lescano, L. Pizzul, M.d.P. Castillo, C.S. Zalazar
Journal of Environmental Management, 2018
Microparticles based on ionic and organosolv lignins for the controlled release of atrazine
María Eugenia Taverna, Carlos Alberto Busatto, Maia Raquel Lescano, Verónica Viviana Nicolau, Cristina Susana Zalazar, Gregorio Raúl Meira, Diana Alejandra Estenoz
Journal of Hazardous Materials, 2018
Current knowledge of earthworm richness and distribution in Santa Fe Province, Argentina
Carolina Elisabet Masin, Fernando Roberto Momo, Cristina Susana Zalazar, Alba Rut Rodríguez
Revista De Biologia Tropical, 2018
Earthworms to assess the innocuousness of spent biomixtures employed for glyphosate degradation
Carolina E. Masin, Maia R. Lescano, Alba R. Rodríguez, José L. Godoy, Cristina S. Zalazar
Journal of Environmental Science and Health Part B Pesticides Food Contaminants and Agricultural Wastes, 2018
Advanced oxidation of commercial herbicides mixture: experimental design and phytotoxicity evaluation
Alejandro López, Andrea Coll, Maia Lescano, Cristina Zalazar
Environmental Science and Pollution Research, 2018
Water polluted with glyphosate formulations: Effectiveness of a decontamination process using Chlorella vulgaris growing as bioindicator
Ulises Reno, Luciana Regaldo, Eduardo Vidal, Melisa Mariani, Cristina Zalazar, Ana María Gagneten
Journal of Applied Phycology, 2016
Microcrustaceans: Biological models to evaluate a remediation process of glyphosate-based formulations
Ulises Reno, María Florencia Gutierrez, Melisa Longo, Eduardo Vidal, Luciana Regaldo, Antonio Negro, Melisa Mariani, Cristina Zalazar, Ana María Gagneten
Water Air and Soil Pollution, 2015
Arsenic sorption onto titanium dioxide, granular ferric hydroxide and activated alumina: Batch and dynamic studies
Maia R. Lescano, Claudio Passalía, Cristina S. Zalazar, Rodolfo J. Brandi
Journal of Environmental Science and Health Part A Toxic Hazardous Substances and Environmental Engineering, 2015
Arsenic removal from water employing a combined system: photooxidation and adsorption
Maia Lescano, Cristina Zalazar, Rodolfo Brandi
Environmental Science and Pollution Research, 2015
Modeling of degradation kinetic and toxicity evaluation of herbicides mixtures in water using the UV/H2O2 process
Melisa L. Mariani, Roberto L. Romero, Cristina S. Zalazar
Photochemical and Photobiological Sciences, 2015
Simplified reaction kinetics, models and experiments for glyphosate degradation in water by the UV/H2O2 process
Eduardo Vidal, Antonio Negro, Alberto Cassano, Cristina Zalazar
Photochemical and Photobiological Sciences, 2015
A combined system for arsenic removal from water by photochemical oxidation and adsorption technology
M Lescano, C Zalazar, R Brandi
One Century of the Discovery of Arsenicosis in Latin America 1914 2014 as 2014 Proceedings of the 5th International Congress on Arsenic in the Environment, 2014
Degradation of a mixture of glyphosate and 2,4-d in water solution employing the UV/H2O2 process, including toxicity evaluation
Advanced Oxidation Technologies Sustainable Solutions for Environmental Treatments, 2014
Decontamination of commercial chlorpyrifos in water using the UV/H2O2 process
Advanced Oxidation Technologies Sustainable Solutions for Environmental Treatments, 2014
Photodegradation of chlorpyrifos in water by UV/H2O2 treatment: Toxicity evaluation
J. Femia, M. Mariani, C. Zalazar, I. Tiscornia
Water Science and Technology, 2013
A kinetic model for the degradation of dichloroacetic acid and formic acid in water employing the H2O2/UV process
Melisa L. Mariani, Rodolfo J. Brandi, Alberto E. Cassano, Cristina S. Zalazar
Chemical Engineering Journal, 2013
Effectiveness evaluation of glyphosate oxidation employing the H2O2/UVC process: Toxicity assays with Vibrio fischeri and Rhinella arenarum tadpoles
Celina M. Junges, Eduardo E. Vidal, Andrés M. Attademo, Melisa L. Mariani, Leandro Cardell, Antonio C. Negro, Alberto Cassano, Paola M. Peltzer, Rafael C. Lajmanovich, Cristina S. Zalazar
Journal of Environmental Science and Health Part B Pesticides Food Contaminants and Agricultural Wastes, 2013
Kinetic modeling of arsenic (III) oxidation in water employing the UV/H2O2 process
Maia Lescano, Cristina Zalazar, Alberto Cassano, Rodolfo Brandi
Chemical Engineering Journal, 2012
Arsenic (iii) oxidation of water applying a combination of hydrogen peroxide and UVC radiation
Maia R. Lescano, Cristina S. Zalazar, Alberto E. Cassano, Rodolfo J. Brandi
Photochemical and Photobiological Sciences, 2011
Degradation of a mixture of pollutants in water using the UV/H 2O2 process
M. L. Mariani, M. D. Labas, R. J. Brandi, A. E. Cassano, C. S. Zalazar
Water Science and Technology, 2010
Glyphosate degradation in water employing the H2O2/UVC process
A. Manassero, C. Passalia, A.C. Negro, A.E. Cassano, C.S. Zalazar
Water Research, 2010
Water disinfection with UVC radiation and H2O2. A comparative study
Marisol Daniela Labas, Rodolfo Juan Brandi, Cristina Susana Zalazar, Alberto Enrique Cassano
Photochemical and Photobiological Sciences, 2009
Comparison of H2O2/UV and heterogeneous photocatalytic processes for the degradation of dichloroacetic acid in water
C. S. Zalazar, M. L. Satuf, O. M. Alfano, A. E. Cassano
Environmental Science and Technology, 2008
Reaction kinetics of bacteria disinfection employing hydrogen peroxide
Marisol D. Labas, Cristina S. Zalazar, Rodolfo J. Brandi, Alberto E. Cassano
Biochemical Engineering Journal, 2008
Intrinsic kinetics of the oxidative reaction of dichloroacetic acid employing hydrogen peroxide and ultraviolet radiation
Cristina S. Zalazar, María E. Lovato, Marisol D. Labas, Rodolfo J. Brandi, Alberto E. Cassano
Chemical Engineering Science, 2007
Modelling the kinetics of UV/H2O2 oxidation of dichloroacetic acid
C.S. Zalazar, M.D. Labas, M.E. Lovato, R.J. Brandi, A.E. Cassano
Water Science and Technology, 2007
Dichloroacetic acid degradation employing hydrogen peroxide and UV radiation
Cristina S. Zalazar, Marisol D. Labas, Rodolfo J. Brandi, Alberto E. Cassano
Chemosphere, 2007
Changes in free fatty acid composition during storage of whole milk powder
R PÁEZ, N PENSEL, N SABBAG, M TAVERNA, A CUATRÍN, C ZALAZAR
International Journal of Dairy Technology, 2006
Photocatalytic intrinsic reaction kinetics I: Mineralization of dichloroacetic acid
Cristina S. Zalazar, Roberto L. Romero, Carlos A. Martín, Alberto E. Cassano
Chemical Engineering Science, 2005
Photocatalytic intrinsic reaction kinetics. II: Effects of oxygen concentration on the kinetics of the photocatalytic degradation of dichloroacetic acid
Cristina Susana Zalazar, Carlos Alberto Martin, Alberto Enrique Cassano
Chemical Engineering Science, 2005
The extended use of actinometry in the interpretation of photochemical reaction engineering data
Cristina S. Zalazar, Marisol D. Labas, Carlos A. Martín, Rodolfo J. Brandi, Orlando M. Alfano, Alberto E. Cassano
Chemical Engineering Journal, 2005
Reactor scale-up in AOPs: From laboratory to commercial scale
C.S. Zalazar, M.D. Labas, C.A. Martín, R.J. Brandi, A.E. Cassano
Water Science and Technology, 2004
Scaling up of a photoreactor for formic acid degradation employing hydrogen peroxide and UV radiation
Marisol D. Labas, Cristina S. Zalazar, Rodolfo J. Brandi, Carlos A. Martín, Alberto E. Cassano
Helvetica Chimica Acta, 2002
Effect of moisture level and fat replacer on physicochemical, rheological and sensory properties of low fat soft cheeses
C.A. Zalazar, C.S. Zalazar, S. Bernal, N. Bertola, A. Bevilacqua, N. Zaritzky
International Dairy Journal, 2002

Cristina Zalazar

RESEARCH INTERESTS

Scopus Publications