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
Environmental Sciences
Liping Li
Summary: The study investigated the toxicity and transformation characteristics of triclosan ozonation and chlorination, revealing the generation of toxic chlorinated compounds during chlorination and the mitigation of genotoxicity with ozonation treatment. Chlorination led to a 30-fold increase in anti-estrogenic activity, while ozonation could reduce the toxicity of triclosan-containing water. Therefore, ozonation may be a more environmentally friendly and safe method for treating triclosan wastewater.
Article
Engineering, Environmental
Dustin Poppendieck, Heidi Hubbard, Richard L. Corsi
Summary: The study investigated the removal efficiency of VHP on indoor materials and emissions of organic compounds, comparing them with ozone and chlorine dioxide. Most materials exhibited relatively constant and high deposition velocities for VHP, while showing different deposition velocities for O-3 and OClO. The release of organic compounds from materials was relatively low, lower than observed values for ozone.
ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS
(2021)
Article
Environmental Sciences
Dorothee Schmiemann, Lisa Hohenschon, Indra Bartels, Andrea Hermsen, Felix Bachmann, Arno Cordes, Martin Jaeger, Jochen Stefan Gutmann, Kerstin Hoffmann-Jacobsen
Summary: Ozonation is an effective technique for removing micropollutants from wastewater, but it often leads to the formation of potentially toxic by-products. This study explored the use of enzymatic post-treatment with laccase to degrade the by-products formed during ozonation. The enzymatic treatment successfully reduced the ecotoxicity of the ozonated effluent and suggested a resource-efficient method for removing persistent micropollutants without emitting harmful by-products.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
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)
Article
Environmental Sciences
Yuan He, Liangjie Wang, Zhan Chen, Bo Shen, Jinshan Wei, Ping Zeng, Xianghua Wen
Summary: This study evaluated the oxidative reactivity of different crystal phases of MnO2 towards MET and IBU, with alpha-MnO2 showing the highest degradation efficiency. The study determined the optimal operating parameters and proposed probable degradation pathways for MET and IBU.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Review
Engineering, Chemical
Jan Derco, Andreja Zgajnar Gotvajn, Ol'ga Cizmarova, Jozef Dudas, Lenka Sumegova, Katarina Simovicova
Summary: This paper focuses on the research trends of using ozonation and ozone-based AOPs in removing micropollutants from wastewater to prevent leakage of harmful substances and facilitate water reuse. The authors also present results obtained in solving research projects aimed at eliminating selected micropollutants.
Article
Environmental Sciences
L. Jothinathan, Q. Q. Cai, S. L. Ong, J. Y. Hu
Summary: The combined microbubble-catalytic ozonation process (M-O-3/Fe/GAC) was found to significantly enhance the efficiency of ozonation in petrochemical wastewater treatment, achieving a COD removal efficiency of 88% and a reduction of phenolic compounds by 63% within 15 minutes.
Article
Environmental Sciences
Amin Mojiri, John L. Zhou, Harsha Ratnaweera, Shahabaldin Rezania, Mansoureh Nazari
Summary: This study focuses on the occurrence of PPCPs in natural water bodies globally and examines the impact of various factors on the fluxes of pollutants into receiving waterways. High concentrations of PPCPs in water bodies have harmful effects on aquatic organisms, while algae-based systems are found to be effective in removing certain PPCPs.
Article
Engineering, Chemical
Albert Sales-Alba, Alberto Cruz-Alcalde, Nuria Lopez-Vinent, Lucas Cruz, Carme Sans
Summary: This study assesses the reaction kinetics, degradation mechanisms, and associated toxicity of the neonicotinoid insecticide clothianidin (CLO) during ozone-based oxidation in water. The results indicate that the degradation is mainly attributed to indirect mechanisms rather than direct degradation pathways. The presence of dissolved organic carbon (DOC) in water matrices hinders the achievement of high CLO removal, while carbonate alkalinity has a minimal effect on the process efficiency. The study also identifies the major transformation products of CLO and reveals their decreased toxicity compared to the parent compound. These findings suggest that ozonation is a suitable technology for the abatement of CLO and its associated toxicity in aqueous matrices.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Environmental
Chang Jing, Wang Yibo, Zhang Yaxue, Zhang Wenjuan, Zhang Rui, Wang Zhe, Wang Shaopo
Summary: This study investigated the degradation mechanisms, byproduct security and cost of the UV/O3 process for the treatment of ibuprofen (IBP) in water. The results showed that adding UV irradiation to the O3 process significantly increased IBP degradation rate and achieved superior mineralization. The efficiency of UV/O3 was less affected by pH values and the presence of humic acid compared to the O3 process, mainly due to the promotion of HO center dot formation. The UV/O3 process produced 11 byproducts with-OH/-COOH groups, while ozonation produced similar types of byproducts, but with aromatics from UV irradiation. Toxicity evaluation indicated that some byproducts produced in the O3 and UV/O3 processes were more harmful than IBP based on oral rate LD50 values. The UV/O3 technology showed better byproduct security and acceptable cost for IBP wastewater treatment.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Olga Cizmarova, Barbora Urminska, Jan Derco, Angelika Kassai, Ronald Zakhar
Summary: Alkylphenols and their ethoxylates can be effectively removed by using ozone-based advanced oxidation processes with different adsorption materials; among them, ozone combined with granular activated carbon is the most efficient method for the removal of alkylphenol derivatives.
Article
Environmental Sciences
Maria Neth, Ann Mattsson, Britt-Marie Wilen, Oskar Modin
Summary: Sustainability assessment using multicriteria analysis is a structured method that incorporates criteria from the three dimensions of sustainability (environmental, economic, and social) when comparing alternatives. The conventional methods lack transparency in terms of the consequences of different criteria weights, which the amended method addresses using weighted score ratios. This increases transparency and objectivity by allowing comparison with other assessments and reference values from society.
SCIENCE OF THE TOTAL ENVIRONMENT
(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
Environmental Sciences
Chikang Wang, Chien-Yu Lin, Guan-Yun Liao
Summary: In this study, a combination of ozone gas and ultrafine-bubble compressor was used to degrade tetracycline. Experimental results showed that alkaline conditions can facilitate mineralization of tetracycline, and higher reaction temperatures and ozone dosages can enhance reactivity between ozone molecules, center dot OH radicals, and tetracycline. Mineralization of organic compounds is crucial for reducing toxicity of the solution.
Correction
Environmental Sciences
Mattias Sorengard, Sofia Bergstrom, Philip McCleaf, Karin Wiberg, Lutz Ahrens
ENVIRONMENTAL POLLUTION
(2023)
Article
Environmental Sciences
Adria Sunyer-Caldu, Oksana Golovko, Michal Kaczmarek, Hakan Asp, Karl -Johan Bergstrand, Ruben Gil-Solsona, Pablo Gago-Ferrero, M. Silvia Diaz-Cruz, Lutz Ahrens, Malin Hultberg
Summary: Recovering and reusing nutrients in agriculture is a challenge. Anaerobic digestion of food waste is a sustainable process that can recycle nutrients for use as fertilizers. However, the digestate may contain contaminants that pose risks to the environment and human health.
ENVIRONMENTAL POLLUTION
(2023)
Article
Engineering, Environmental
Philip McCleaf, William Stefansson, Lutz Ahrens
Summary: Per-and polyfluoroalkyl substances (PFAS) are persistent pollutants found in drinking water on a global scale. Reverse osmosis and nanofiltration have shown effectiveness in removing PFAS, but the disposal of PFAS-laden concentrate poses a problem. The study examined a novel PFAS removal scheme using nanofiltration and foam fractionation, achieving high removal efficiency. The addition of a cationic co-surfactant improved the removal efficiency of certain PFAS compounds.
Article
Environmental Sciences
Dauren Mussabek, Anna Soderman, Tomomi Imura, Kenneth M. Persson, Kei Nakagawa, Lutz Ahrens, Ronny Berndtsson
Summary: Groundwater contamination caused by the use of AFFF containing PFAS was investigated in southern Sweden. PFAS concentrations ranged from 20 to 20,000 ng L-1, with PFOS and PFHxS being the most prominent compounds. PFAS chain length was found to affect the distribution and transport in groundwater. PFAS-AFFF use during fire-training and equipment tests was identified as a contributor to PFAS contamination, with estimated emission amounts varying based on the number of training sessions per year.
Article
Environmental Sciences
Hugo Campos-Pereira, Dan B. Kleja, Lutz Ahrens, Anja Enell, Johannes Kikuchi, Michael Pettersson, Jon Petter Gustafsson
Summary: The study investigated the pH-dependent soil-water partitioning of six perfluoroalkyl substances (PFASs) in 11 temperate mineral soils and found that PFAS sorption was positively related to perfluorocarbon chain length and inversely related to solution pH. Organic carbon alone was a poor predictor of PFAS partitioning, and additional factors such as Fe/Al (hydr) oxides and soil texture (silt + clay) played a role. A model based on soil organic matter charge underestimated PFAS sorption. This research highlights the need for further understanding of PFAS behavior and impact in soils.
Article
Environmental Sciences
Minh A. Nguyen, Lutz Ahrens, Sarah Josefsson, Jakob Gustavsson, Hjalmar Laudon, Karin Wiberg
Summary: Atmospheric deposition is the main source of PAHs in remote areas, and their fluxes were measured on a seasonal basis in a subarctic forest catchment in northern Europe. It was found that the deposition fluxes of PAHs and PAH-derivatives were higher during cold periods, and they showed similar seasonal patterns, suggesting similar sources and deposition mechanisms. The study also showed that boreal forests act as sinks for PACs derived from the atmosphere.
ENVIRONMENTAL POLLUTION
(2023)
Article
Environmental Sciences
Georgios Niarchos, Linnea Georgii, Lutz Ahrens, Dan Berggren Kleja, Fritjof Fagerlund
Summary: This study investigated the competition among different PFAS compounds during sorption to colloidal activated carbon (CAC), and found that competition effects are significant in the sorption process.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2023)
Article
Environmental Sciences
Jennifer Nystrom-kandola, Lutz Ahrens, Anders Glynn, Gunnar Johanson, Jonathan P. Benskin, Irina Gyllenhammar, Sanna Lignell, Carolina Vogs
Summary: This study evaluated the association between low-level contaminated drinking water and body burdens of perfluoroalkyl acids (PFAAs) and found a significant positive correlation between concentrations of PFAAs in drinking water and serum. The findings suggest the importance of considering PFAA exposure from low-level contaminated drinking water in risk assessment for adolescents.
ENVIRONMENT INTERNATIONAL
(2023)
Article
Environmental Sciences
Winnie Nassazzi, Tien-Chi Wu, Jana Jass, Foon Yin Lai, Lutz Ahrens
Summary: Per- and polyfluoroalkyl substances (PFAS) are man-made compounds that pose a threat to water quality and food safety globally. This study assessed the potential of sunflower, mustard, and hemp for phytoextraction of PFAS, and found that the use of inorganic fertilizer significantly reduced PFAS concentration in plant tissues. Additionally, an estimation of the time required for PFAS phytoextraction was determined for the first time.
ENVIRONMENTAL POLLUTION
(2023)
Article
Engineering, Environmental
Daniel Malnes, Sylvia Waara, Romain Figuiere, Lutz Ahrens, Karin Wiberg, Stephan J. Kohler, Oksana Golovko
Summary: Persistent, mobile, and toxic (PMT) substances are receiving increasing attention from environmental researchers, the water sector, and environmental protection agencies. This study assessed the risk of emerging concern contaminants in Swedish surface waters using species sensitivity distributions (SSDs) and risk quotients (RQ). The results showed that some of the detected contaminants posed a moderate to high risk in Swedish rivers and lakes.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Environmental
Frieberg Kim, Gago-Ferrero Pablo, Bijlsma Lubertus, Ahrens Lutz, Wiberg Karin, Hernandez Felix, Oskarsson Agneta, Lundqvist Johan
Summary: Indirect potable reuse of treated wastewater for drinking water production is a viable solution to water scarcity. Disinfection is effective in reducing microbial hazards, but it can lead to the formation of disinfection by-products. This study assessed the chemical hazards in a system where chlorination was used for disinfection, and found a significant reduction in bioactive pollutants in the finished drinking water. The findings contribute valuable knowledge to increase the reuse of treated wastewater for drinking water production.
Review
Environmental Sciences
Juliane Hollender, Emma L. Schymanski, Lutz Ahrens, Nikiforos Alygizakis, Frederic Been, Lubertus Bijlsma, Andrea M. Brunner, Alberto Celma, Aurelie Fildier, Qiuguo Fu, Pablo Gago-Ferrero, Ruben Gil-Solsona, Peter Haglund, Martin Hansen, Sarit Kaserzon, Anneli Kruve, Marja Lamoree, Christelle Margoum, Jeroen Meijer, Sylvain Merel, Cassandra Rauert, Pawel Rostkowski, Saer Samanipour, Bastian Schulze, Tobias Schulze, Randolph R. Singh, Jaroslav Slobodnik, Teresa Steininger-Mairinger, Nikolaos S. Thomaidis, Anne Togola, Katrin Vorkamp, Emmanuelle Vulliet, Linyan Zhu, Martin Krauss
Summary: The increasing production and use of chemicals have led to a growing interest in understanding their impact on ecosystems and human health through suspect and non-target screening (NTS). To promote effective implementation of NTS, more harmonisation is needed. The NORMAN Association has prepared a guidance document to provide guidance on conducting high-quality NTS studies and interpreting data while addressing the challenges and pitfalls of these techniques. The document covers various steps of NTS, from sampling and analysis to data evaluation and reporting, and also introduces analytical methods, processing techniques, and databases commonly used in NTS workflows.
ENVIRONMENTAL SCIENCES EUROPE
(2023)
Article
Engineering, Environmental
Maura Mancinelli, Annalisa Martucci, Lutz Ahrens
Summary: Per- and polyfluoroalkyl substances (PFAS) are gaining attention due to their widespread distribution, persistence, and toxicity. Among the techniques for removing PFAS from water, adsorption treatment techniques, specifically using zeolites and powdered activated carbon, show promising results. This study evaluated the effectiveness of different zeolites and PAC for sorption of 18 PFAS and identified β-type zeolites with SAR=25 and SAR=300, as well as mordenite with SAR=240, as the most promising adsorbent media.
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(2023)
