Article
Engineering, Environmental
Hyungyu Lee, Sanghoo Park, Joo Young Park, Jinwoo Kim, Wonho Choe
Summary: We numerically demonstrate that photolytic processes induced by external UV sources significantly affect the chemical properties of plasma-water systems. Exposure of plasma-treated water (PTW) to UV leads to the photolysis of long-lived species and the formation of hydroxyl radical (OH) and nitric oxide (NO). The concentration of OH and NO in PTW is greatly enhanced under UV exposure, making it an attractive approach to increase the reactivity and applicability of PTW.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Environmental Sciences
M. Ekblad, R. Juarez, P. Falas, K. Bester, M. Hagman, M. Cimbritz
Summary: The study found that short hydraulic retention time was sufficient for organic micropollutant removal, and higher removal efficiency was achieved after on-site addition of aluminum chloride.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Engineering, Environmental
Dmitri Nikitin, Balpreet Kaur, Sergei Preis, Niina Dulova
Summary: The degradation and mineralization of antidiabetic metformin (MTF) and opioid tramadol (TMD) in water were investigated using UV photolytic oxidation and pulsed corona discharge (PCD) combined with extrinsic persulfate (PS) systems. The results showed that the UV/PS combination had considerable effect in removing MTF and TMD, while the PCD/PS oxidation had a synergy effect on MTF degradation. Addition of PS to PCD treatment had no effect on TMD oxidation. The non-assisted PCD treatment showed the highest energy efficiency in MTF and TMD degradation.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Article
Environmental Sciences
B. Mathon, M. Coquery, Z. Liu, Y. Penru, A. Guillon, M. Esperanza, C. Miege, J-M. Choubert
Summary: This study investigated the degradation of micropollutants in wastewater through ozonation, identifying different removal pathways and rates for various types of organic micropollutants. The research found that low and medium oxidizable micropollutants were mainly removed through indirect pathways, while high oxidizable micropollutants were eliminated through direct pathways. The model developed in the study successfully simulated the removal efficiencies of specific micropollutants in batch experiments and in a full-scale ozonation process.
Article
Engineering, Environmental
Gang Shi, Shota Nishizawa, Taku Matsushita, Yuna Kato, Takahiro Kozumi, Yoshihiko Matsui, Nobutaka Shirasaki
Summary: The study optimized the performance of VUV photoreactor through computational fluid dynamics and energy analysis, examining the effects of flow rate and radiant exitance on the efficiency of 1,4-dioxane degradation.
Review
Environmental Sciences
Eliasu Issaka, Jesse Nii-Okai Amu-Darko, Salome Yakubu, Funmilayo Omotoyosi Fapohunda, Nisar Ali, Muhammad Bilal
Summary: The advanced catalytic ozonation process shows significant effectiveness in removing refractory organic compounds and degrading toxic organic pollutants in wastewater. Heterogeneous catalytic ozonation can effectively overcome the disadvantages of homogeneous catalytic ozonation, providing higher catalytic stability and efficiency.
Article
Engineering, Environmental
Tahereh Jasemizad, Lev Bromberg, Lokesh P. Padhye
Summary: This study investigated the fate of aqueous betrixaban, an oral anticoagulant, during adsorption, photolysis, and advanced oxidation in the presence of radicals. The results showed that betrixaban can be efficiently removed using coconut shell-based granular activated carbon and that degradation rates can be enhanced by increasing H2O2 dosage, light intensity, and contact time. Hydroxyl radicals were identified as the major reactive species involved in the degradation process during the UV/H2O2 treatment.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Daliane R. C. da Silva, Sivuyisiwe Mapukata, Sara Currie, Alexandros A. Kitos, Anabel E. Lanterna, Tebello Nyokong, Juan C. Scaiano
Summary: Water decontamination is a challenge in both developed and developing countries, and there is an urgent need for affordable and efficient solutions. Heterogeneous photocatalysts, such as fibrous TiO2, have shown promising potential for water remediation. This study evaluated three fibrous TiO2 photocatalysts and compared their performance in bleaching a dye molecule under batch and flow conditions, providing insights for selecting a suitable flow-compatible photocatalyst for water remediation.
Article
Environmental Sciences
A. Gome, K. Upadhyay
Summary: Ozonation is an effective method for treating pharmaceutical wastewater, with potential for high removal of chemical oxygen demand. The study highlights the importance of pH in ozonation treatment, showing that alkaline conditions favor the removal of chemical oxygen demand.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Article
Engineering, Environmental
Xiaofei Wang, Shiqiang Wen, Taozhong Shi, Qing X. Li, Pei Lv, Rimao Hua
Summary: In this study, bismuth oxy-chloride (BiOCl) was synthesized and used to degrade the triketone herbicide tembotrione (TEM). It was found that BiOCl significantly increased the photolytic efficiencies of TEM under different light irradiation, and fulvic acid reduced the transformation. The findings help in understanding TEM transformation and utilizing BiOCl to reduce aquatic toxicity and pollution of TEM.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Environmental
Markus Schmitt, Katja Wack, Clarissa Glaser, Ran Wei, Christian Zwiener
Summary: In order to understand the in-stream attenuation of trace organic contaminants (TrOCs), comparing field studies under different environmental conditions and controlled laboratory experiments is crucial, but transferring kinetics from the lab to field conditions is challenging due to the lack of quantitative measures for different boundary conditions. This study presents a method to differentiate between photochemical and non-photochemical diurnal in-stream attenuation, with biotransformation potentially responsible for the diurnal attenuation of certain TrOCs and phototransformation explaining the attenuation of others, showing a range of attenuation rate constants at different field sites which can be explained by light exposure.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Review
Chemistry, Physical
Giusi Piccirillo, Rafael T. Aroso, Fabio M. S. Rodrigues, Rui M. B. Carrilho, Sara M. A. Pinto, Mario J. F. Calvete, Mariette M. Pereira
Summary: This paper reviews the major advances made in the development of oxidative processes of pharmaceuticals in aqueous solutions using tetrapyrrole-based catalysts over the past decade. It discusses the mechanisms involved in these oxidative processes and categorizes them by the degradation of different families of pharmaceutical compounds, such as antibiotics, analgesics and neurological drugs. The critical analysis and discussion of the fundamental roles of tetrapyrrolic macrocycles in both photochemical degradative processes and direct oxidative chemical degradation are presented for each family.
Article
Biotechnology & Applied Microbiology
Yu Gao, Zhitao Han, Guangpeng Zhai, Jingming Dong, Xinxiang Pan
Summary: In this study, excellent H2S removal performance was achieved by wet scrubbing persulfate solution combined with UV irradiation. The H2S removal efficiency was enhanced with the increase of UV power and initial (NH4)2S2O8 concentration, but restrained with the increase of initial H2S concentration and gas flow. Free radicals of sulfate radicals and hydroxyl radicals played a leading role in H2S oxidation in the advanced oxidation process.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2022)
Article
Environmental Sciences
Anna Ofrydopoulou, Eleni Evgenidou, Christina Nannou, Marlen Vasquez, Dimitra Lambropoulou
Summary: The study comprehensively investigated the phototransformation and ecotoxicity of a mixture of twelve pharmaceutically active compounds susceptible to photolysis. A total of 166 transformation products were identified, including twelve novel ones. The results demonstrated that photolysis of the target mixture leads to a decrease of the observed toxicity.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Review
Engineering, Environmental
Xin Lei, Yu Lei, Xinran Zhang, Xin Yang
Summary: This review focuses on the degradation kinetics and mechanisms of disinfection byproducts (DBPs) under UV and solar irradiation and in UV-based advanced oxidation processes (AOPs). The study highlights the differences in photodegradation rates of N-nitrosamines and halogenated DBPs, and the potential predictors of photodegradation rates under low pressure UV irradiation. Additionally, the review summarizes the reaction mechanisms under UV irradiation and in HO center dot-mediated oxidation, providing insights into the degradation pathways of various DBPs.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Environmental Sciences
Roi Peretz, Hadas Mamane, Eli Wissotzky, Elizaveta Sterenzon, Yoram Gerchman
Summary: The increasing use of cardboard packaging materials due to rising socioeconomic levels and the popularity of e-commerce has led to a significant increase in recycling and waste management. The sludge produced during the recycling process contains a high percentage of cellulose fibers, but is currently disposed in landfills, adding to the economic and environmental costs of recycling. However, innovative approaches such as short ozonation pretreatment have shown potential in converting the cellulosic fraction of the sludge into valuable products like sugar and ethanol, as well as using solid remnants for wastewater treatment, thereby promoting sustainability and circular economy in the paper and cardboard recycling industry.
WASTE AND BIOMASS VALORIZATION
(2021)
Article
Engineering, Chemical
Vinod Kumar Vadivel, Haim Cikurel, Hadas Mamane
Summary: The study demonstrated the efficient removal of indigo dye using a low-cost, nontoxic, biodegradable, and readily regenerated adsorbent. The removal of indigo dye was more effective compared to ozone- and peroxone-based advanced oxidation processes, and offers the potential for recovery of pure indigo dye from wastewater.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Review
Green & Sustainable Science & Technology
Ramasamy Ganesamoorthy, Vinod Kumar Vadivel, Rajnish Kumar, Omkar S. Kushwaha, Hadas Mamane
Summary: Numerous aerogels are found in scientific literature, but few are commercially available, particularly in water remediation. Aerogels can support a variety of new materials, but production costs remain a challenge for market implementation.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Chemistry, Multidisciplinary
Elizaveta Sterenzon, Vinod Kumar Vadivel, Yoram Gerchman, Thomas Luxbacher, Ramsundram Narayanan, Hadas Mamane
Summary: The study demonstrates that pine tree-derived biochar is effective in removing AV dye, and monitoring the effluent ratio can enhance colorant removal efficiency. The Langmuir isotherm model best fits the adsorption of AV onto biochar.
Article
Energy & Fuels
Liron Friedman, Kartik Chandran, Dror Avisar, Edris Taher, Amanda Kirchmaier-Hurpia, Hadas Mamane
Summary: This study investigated the impact of H2O2 addition on microbial activity and process performance in a soil aquifer treatment (SAT) system. The results showed that H2O2 could accelerate the activity of ammonia-oxidizing bacteria and improve the removal of COD and ammonia, leading to higher nitrogen removal efficiency.
Article
Energy & Fuels
Lakshmi Prasanna, Dror Avisar
Summary: By catalytic ozonation using magnesium hydroxide (Mg(OH)2), the degradation of cyclophosphamide (CYP) in wastewater can be enhanced through the production of reactive oxygen species (ROS), resulting in higher degradation efficiency and catalyst reusability.
Article
Green & Sustainable Science & Technology
Yan Rosen, Alona Maslennikov, Beny Trabelcy, Yoram Gerchman, Hadas Mamane
Summary: This study demonstrates the applicability of short ozonation as a practical approach for removing the inhibitory effects of by-products generated during thermal pretreatment.
Article
Environmental Sciences
Patricia K. Akao, Aviv Kaplan, Dror Avisar, Amit Dhir, Adi Avni, Hadas Mamane
Summary: This study evaluated the removal capacity of a coupled microalgal-bacterial biofilm (CMBB) for three recalcitrant pharmaceuticals. The results showed that CMBB treatment had a higher removal efficiency for venlafaxine and carbamazepine, but no removal was observed for iohexol. The presence of light, microorganism composition, and dissolved oxygen concentration were identified as essential parameters affecting pharmaceutical and ammonia removal. CMBB has the potential to be a cost-effective and sustainable method for wastewater treatment and removal of recalcitrant pharmaceuticals.
Article
Biochemistry & Molecular Biology
Adi Zilberman, Igal Gozlan, Dror Avisar
Summary: The efficiency of direct and indirect ozonation in an advanced oxidation process (AOP) was evaluated for the removal of pharmaceutical residues in intentionally spiked deionized water. Both direct and indirect ozonation achieved removal rates ranging from 34% to 100% for the parent compounds. However, the study suggests that despite using accepted and affordable concentrations of ozone and radicals, the parent compounds were not fully degraded but transformed into 25 new intermediate products. These transformation products (TPs) were structurally similar to the parent compounds and exhibited similar persistence, stability, and toxicity. Some TPs were even more toxic than their parent compounds. Therefore, additional treatment is necessary to enhance the AOP for the degradation and removal of both parent compounds and their TPs to ensure safer release into the environment.
Article
Chemistry, Multidisciplinary
V. Lakshmi Prasanna, Dhakshnamoorthi Harikaran, Dror Avisar, R. Vijayaraghavan
Summary: Inorganic oxide materials such as TiO2 and ZnO have been extensively studied for environmental remediation, while the use of inorganic solid oxidants such as metal peroxides for this purpose remains unexplored. This study explores the synthesis and characterization of peroxides of Zn, Mg, and Ba and their photocatalytic activity. BaO2 is identified as a potential photocatalyst with higher activity than ZnO, and the mechanisms of reactive oxygen species (ROS) generation and dye degradation are elucidated.
Article
Multidisciplinary Sciences
Dana Pousty, Hadas Mamane, Vered Cohen-Yaniv, James R. Bolton
Summary: Uridine is a chromophore that can be used as an actinometer to determine the germicidal photon flux in the range of 240 to 290 nm. It has a similar absorption spectrum to DNA and is a simple, environmental-friendly, and easy-to-operate actinometer.
Article
Environmental Sciences
Aviv Kaplan, Gefen Ronen-Eliraz, Stanislav Ratner, Yaron Aviv, Yitzhak Wolanov, Dror Avisar
Summary: The atmospheric water generator (AWG) is a commercially available device that produces large volumes of water from the air in a short time. It can be used in most regions of the world to address chronic and acute drinking water scarcity. However, the impact of air chemical composition on the quality of AWG-produced water is not well understood. In a survey conducted in a heavily polluted industrial environment, AWG-produced water was found to meet drinking water standards for most contaminants, except for specific parameters such as nickel, dichloromethane, and ammonia.
ENVIRONMENTAL POLLUTION
(2023)
Article
Environmental Sciences
Asaf Pras, Hadas Mamane
Summary: At least 2 billion people use contaminated drinking water sources, leading to waterborne diseases and high death rates among children. This study demonstrates the feasibility of using a MLP-ANN model to predict the presence of fecal coliforms in drinking water sources, achieving high accuracy. The model utilizes water quality and geographical parameters, providing real-time monitoring with low-cost equipment. This method can contribute to improving drinking water quality and achieving SDG 6 targets.
ENVIRONMENTAL POLLUTION
(2023)
Article
Multidisciplinary Sciences
Nofar Atari, Hadas Mamane, Alon Silberbush, Neta Zuckerman, Michal Mandelboim, Yoram Gerchman
Summary: This study explores the disinfection kinetics of SARS-CoV-2 variants by 267 nm UV-LED. The results show that all variants have an average reduction in copy number of more than 5 logs at 5 mJ/cm(2) dose, but there is inconsistency, especially for the Alpha variant. Increasing the dose to 7 mJ/cm(2) does not increase average inactivation, but significantly reduces the inactivation inconsistency, making it the recommended minimum dose. Sequence analysis suggests that the difference between the variants may be due to small differences in the frequency of specific UV extra-sensitive nucleotide sequence motifs. The use of UV-LED for the prevention of SARS-CoV-2 spread offers many advantages but careful consideration of UV dose is necessary.
SCIENTIFIC REPORTS
(2023)
Article
Environmental Sciences
Namrata Gaikwad, Ruthwik Nakka, Vedasri Khavala, Abhishek Bhadani, Hadas Mamane, Rajnish Kumar
Summary: This study explores the desalination of heavy metal ions using gas hydrate technology, which eliminates the need for sludge and enhances efficiency by excluding salts and impurities from the solution. The addition of lecithin surfactant improves the kinetics of hydrate formation, leading to efficient desalination, with As5+ ions showing the fastest desalination rate among the selected metal ions.
