Article
Chemistry, Physical
Maia R. Lescano, Alejandro O. Lopez, Roberto L. Romero, Cristina S. Zalazar
Summary: In this study, the degradation of a commercial chlorpyrifos formulation solution under the UV/H2O2 process was predicted through a lumped kinetics modelling approach. A one-step model was selected based on different reaction schemes, with a second-order reaction rate constant obtained for the hydroxyl radical and TOC. The model showed good fitting to the concentrations evolution of the reactants, indicating its potential usefulness in predicting the behavior of different reaction systems for wastewater treatment applications.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2021)
Article
Engineering, Multidisciplinary
Necati Menek, Ceren Ugurlar, Okan Ucarh, Yeliz Karaman, Sasha Omanovic, Saloumeh Ghasemian
Summary: The degradation of Calmagite in H2O2/UV/US, H2O2/US, H2O2, and US processes were investigated and optimized, achieving over 98% degradation in 20-60 minutes. The proposed degradation pathways were established from (OH)-O-center dot mediated degradation of the azo dye, with first-order kinetics fitting the degradation best.
ALEXANDRIA ENGINEERING JOURNAL
(2022)
Article
Agricultural Engineering
K. Jutarvutikul, C. Sakulthaew, C. Chokejaroenrat, A. Pattanateeradetch, S. Imman, N. Suriyachai, T. Satapanajaru, T. Kreetachat
Summary: The study found that increasing H2O2 dosage at neutral pH facilitated the degradation of ENR, while at slightly acidic pH it facilitated the degradation of SMX and OTC. Combining the UV/H2O2 system effectively removes antibiotics from aquaculture discharge water.
AQUACULTURAL ENGINEERING
(2021)
Article
Environmental Sciences
Ae-Jung Hong, Jaewon Lee, Youngho Cha, Kyung-Duk Zoh
Summary: This study investigated the degradation mechanism and kinetics of Propiconazole (PRO) during UV photolysis and UV/H2O2 processes, and identified the transformation products (TPs). The results showed that the UV/H2O2 process was effective in removing PRO, its TPs, and the resulting toxicity in water.
Article
Engineering, Environmental
Xinglin Wang, Xuelin Wang, Jiru Mi, Qizhen Du, Yonglei Wang, Wenjuan Chen, Dapeng Sun, Wuchang Song, Mingrui Shao, Ruibao Jia
Summary: Algal organic matter (AOM) is an important source of toxic substances and poses a threat to safe water supplies. This study used a UV/H2O2/O3 advanced oxidation process to degrade AOM and found that it mainly consists of soluble microbial metabolites, tyrosin and tryptophan. The AOM also contains odorous substances and a small amount of geosmin.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Environmental
Nathan Moore, Chengjin Wang, Susan Andrews, Ron Hofmann
Summary: UV/Cl and UV/H2O2 are compared in terms of their efficiency in the degradation of contaminants in water, with the hypothesis that UV/Cl becomes more competitive as TOC concentration increases at neutral-to-high pH. The results indicate that UV/Cl shows less decrease in reaction rate coefficients for certain contaminants compared to UV/H2O2 as TOC concentration increases, suggesting that UV/Cl may be more energy-efficient in a wider range of treatment scenarios than previously thought.
Article
Environmental Sciences
Monica P. S. Ferreira, Patricia S. M. Santos, Armando C. Duarte
Summary: This study assessed the oxidation of small aromatic compounds in rainwater using the UV/H2O2 process and optimized the process using the response surface methodology. The results showed that increasing the H2O2 concentration enhanced the oxidation extent, while the initial pH had no significant influence. The optimal conditions were determined and validated in real samples, demonstrating the potential of the UV/H2O2 process for rainwater treatment in buildings.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Haoran Feng, Min Liu, Wei Zeng, Ying Chen
Summary: This study utilized the O-3/H2O2 process for pretreatment of the mother liquor of gas field wastewater, optimizing the operation conditions and achieving improved removal efficiency of total organic carbon. Additionally, the research found that the addition of H2O2 promoted the decomposition of ozone to produce hydroxyl radicals, leading to enhanced ozone utilization efficiency.
FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING
(2021)
Article
Chemistry, Analytical
Leila Fatolahi
Summary: This study investigated the photocatalyst/H(2)O(2) degradation of the fluoroquinolone antibiotic Enrofloxacin under UV light. By optimizing the experimental conditions, the best degradation efficiency was achieved. The results of this study have important applications in pharmaceutical wastewater treatment.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2023)
Article
Green & Sustainable Science & Technology
Shuo Wang, Zhangying Ye, Fariborz Taghipour
Summary: This study investigated the degradation of total ammonia nitrogen (TAN) from chloride-containing solutions using different UV sources in a photoelectrochemical process. A synergistic effect on TAN degradation was observed with the three UV sources in the photoelectrochemical process. UV radiation enhanced TAN degradation rates regardless of chloride concentration and initial pH values, with better synergistic degradation occurring under acidic conditions.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Engineering, Environmental
Thomas Easton, Vasileios Koutsos, Efthalia Chatzisymeon
Summary: This study investigates the removal of microplastics through UV irradiation and hydrogen peroxide treatment. The mass loss, carbonyl index change, and physical changes on the surface of the microplastics were monitored. The results show that a dose of 500 mg L-1 H2O2 under 4.0 mW cm-2 UVC irradiation resulted in a mass loss of 52.7% after 48 hours, with degradation occurring through the formation of shallow holes, pits, and cracks on the surface. The proposed UVC/H2O2 treatment could degrade 15.2% of microplastics and completely remove COD in real hospital laundry wastewater within 9 hours and 3 hours, respectively.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Environmental
Haoran Yin, Qizhan Zhang, Yi Su, Yunping Tang, Minghua Zhou
Summary: This study introduced a novel UV based advanced oxidation process with electrochemical co-generation of chlorine and H2O2 (UV/E-Cl&H2O2) for the degradation of carbamazepine (CBZ) with remarkable efficiency and lower energy consumption compared to traditional processes. The generated radicals, especially center dot OH, played a major role in CBZ removal. The process also showed promising perspectives in removing a variety of pollutants and treating real wastewater.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
Liangliang Wang, Yuchao Fei, Chenhao Gong, Yue Shan, Zhongguo Zhang, Fengshan Zhang, Hongshun Cheng
Summary: This study compared the efficacy of two treatments for pulp and paper wastewater (PPWW): ultraviolet/peroxymonosulfate (UV/PMS) and ultraviolet/H2O2 (UV/H2O2). It was found that the UV/PMS process produced higher quality effluent and had better removal efficiency for certain organic compounds.
WATER SCIENCE AND TECHNOLOGY
(2022)
Article
Engineering, Chemical
Jie Wang, Lijing Pang, Yue Gao, Kangying Guo, Qinyan Yue, Xing Xu, Baoyu Gao
Summary: The study investigates the effect of wavelength on the removal of hexazinone using ultraviolet light-emitting diode (UV-LED) in combination with H2O2. It is found that the highest degradation efficiency of hexazinone is achieved at a wavelength of 265 nm in the UV-LED/H2O2 process, with the lowest energy consumption. Dual-wavelength UV-LED irradiation (265 and 280 nm) accelerates the photolysis of H2O2 and increases the efficiency of pollutant degradation. The UV-LED/H2O2 process demonstrates high degradation efficiency and energy savings in various pH environments, except under strongly alkaline conditions.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Alberto Remesal Oliva, Wolfang Finsterle, Patricia Martin
Summary: During their lifetime, TSI radiometers may experience environmental conditions that degrade the coating used as an absorber for measuring incoming radiation. Researchers successfully replicated the observed degradation of PMO6-type radiometers in space using high-intensity UV light. The study showed that a novel carbon nanotube coating remains unaffected under the same conditions.
OPTICAL MATERIALS EXPRESS
(2023)
Article
Environmental Sciences
Ulises Reno, Maria Florencia Gutierrez, Melisa Longo, Eduardo Vidal, Luciana Regaldo, Antonio Negro, Melisa Mariani, Cristina Zalazar, Ana Maria Gagneten
WATER AIR AND SOIL POLLUTION
(2015)
Article
Biotechnology & Applied Microbiology
Ulises Reno, Luciana Regaldo, Eduardo Vidal, Melisa Mariani, Cristina Zalazar, Ana Maria Gagneten
JOURNAL OF APPLIED PHYCOLOGY
(2016)
Article
Environmental Sciences
Carolina E. Masin, Maia R. Lescano, Alba R. Rodriguez, Jose L. Godoy, Cristina S. Zalazar
JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART B-PESTICIDES FOOD CONTAMINANTS AND AGRICULTURAL WASTES
(2018)
Article
Engineering, Environmental
Maria Eugenia Taverna, Carlos Alberto Busatto, Maia Raquel Lescano, Veronica Viviana Nicolau, Cristina Susana Zalazar, Gregorio Raul Meira, Diana Alejandra Estenoz
JOURNAL OF HAZARDOUS MATERIALS
(2018)
Article
Environmental Sciences
Maia Lescano, Cristina Zalazar, Rodolfo Brandi
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2015)
Article
Environmental Sciences
M. R. Lescano, L. Pizzul, M. D. P. Castillo, C. S. Zalazar
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2018)
Article
Engineering, Environmental
Carlos Alberto Busatto, Maria Eugenia Taverna, Maia Raquel Lescano, Cristina Zalazar, Diana Alejandra Estenoz
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2019)
Article
Biodiversity Conservation
C. Masin, A. R. Rodriguez, C. Zalazar, J. L. Godoy
ECOLOGICAL INDICATORS
(2020)
Article
Environmental Sciences
Maia R. Lescano, Carolina E. Masin, Alba R. Rodriguez, Jose L. Godoy, Cristina S. Zalazar
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2020)
Article
Chemistry, Physical
Maia R. Lescano, Alejandro O. Lopez, Roberto L. Romero, Cristina S. Zalazar
Summary: In this study, the degradation of a commercial chlorpyrifos formulation solution under the UV/H2O2 process was predicted through a lumped kinetics modelling approach. A one-step model was selected based on different reaction schemes, with a second-order reaction rate constant obtained for the hydroxyl radical and TOC. The model showed good fitting to the concentrations evolution of the reactants, indicating its potential usefulness in predicting the behavior of different reaction systems for wastewater treatment applications.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2021)
Article
Biodiversity Conservation
Sofia Lammertyn, Carolina Elisabet Masin, Cristina Susana Zalazar, Maria Emilia Fernandez
Summary: The study found that Atrazine mainly affects protein content, cocoon production rate, and enzyme activity in earthworms. Lower concentrations of Atrazine affected short-term cocoon production rate and enzyme levels, while higher concentrations led to reduced reproduction.
ECOLOGICAL INDICATORS
(2021)
Article
Environmental Sciences
Rocio Vicentin, Carolina Elisabet Masin, Maia Raquel Lescano, Cristina Susana Zalazar
Summary: The study analyzes the economic, energy, and environmental impacts of treating two different mixtures of organic wastes. It highlights the importance of integrated agricultural waste treatment for environmental benefits, particularly in relation to the base line scenario. The combined composting and vermicomposting strategy is effective in reducing organic matter and nutrients content, as well as providing improved substrates for agricultural use while reducing fossil fuel consumption.
Article
Environmental Sciences
Carolina Elisabet Masin, Maria Emilia Fernandez, Maia Raquel Lescano, Cristina Susana Zalazar
INTERNATIONAL JOURNAL OF RECYCLING OF ORGANIC WASTE IN AGRICULTURE
(2020)
Article
Biology
Carolina Elisabet Masin, Fernando Roberto Momo, Cristina Susana Zalazar, Alba Rut Rodriguez
REVISTA DE BIOLOGIA TROPICAL
(2018)