Article
Engineering, Environmental
Maryani P. Astuti, Ropru Rangsivek, Lokesh P. Padhye
Summary: This study assessed the efficacy of different treatment methods for the removal of contaminants of emerging concerns (CECs) in water. The results showed that UV and UV/H2O2 were effective in degrading photosensitive compounds, while adsorption by the granular activated carbon (GAC) had a more profound effect on moderately hydrophobic compounds. The laboratory-scale results also highlighted the need for a combination of treatments in order to efficiently remove the target CECs. Based on the findings, UV/H2O2 followed by GAC was identified as an excellent multi-barrier approach for removing a wide range of CECs in water.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Environmental Sciences
Vinicius Diniz, Davi Gasparini Fernandes Cunha, Susanne Rath
Summary: According to the World Health Organization, water quality indicators and contaminants of emerging concern are crucial for the development of wastewater treatment methods for direct potable reuse of water. This study quantified twelve contaminants in a Brazilian wastewater treatment plant and evaluated their adsorption potential onto activated carbon. The researchers also investigated the removal of these contaminants by a multi-barrier system. The results showed promising results for direct potable reuse of water.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Environmental Sciences
Massimiliano Sgroi, Shane A. Snyder, Paolo Roccaro
Summary: The research found that ozonation is the most energy efficient AOP process, while UV irradiation is the most effective method for wastewater disinfection. UV irradiation can effectively inactivate indicator organisms such as Escherichia coli, but is less effective against enterococci.
Article
Environmental Sciences
Pia Schumann, Dario Mueller, Paulina Eckardt, Matthias Muschket, Daniel Dittmann, Luisa Rabe, Kristin Kerst, Andre Lerch, Thorsten Reemtsma, Martin Jekel, Aki Sebastian Ruhl
Summary: The fate of persistent and mobile substances in drinking water treatment needs further investigation. This study evaluates the effectiveness of fixed-bed granular activated carbon (GAC) filters in removing these substances and predicts their elimination based on lab-scale experiments. Nine substances were predominantly present in the drinking water and their breakthrough behaviors were observed. The removal performances and characteristics of GAC were found to be comparable to the presence of specific substances.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Plant Sciences
Michele Denora, Vincenzo Candido, Gennaro Brunetti, Francesco De Mastro, Sapia Murgolo, Cristina De Ceglie, Carlo Salerno, Giuseppe Gatta, Marcella Michela Giuliani, Andi Mehmeti, Ruud P. Bartholomeus, Michele Perniola
Summary: The reuse of treated wastewater for crop irrigation is crucial in water-scarce semi-arid regions, but concerns exist regarding the accumulation of emerging contaminants (ECs) in irrigated crops and their potential entry into the food chain. A pilot-scale study in southern Italy investigated the uptake, accumulation, and translocation processes of ECs in tomato plants irrigated with treated wastewater. The study revealed different behaviors of ECs between different irrigation strategies, highlighting the potential for ECs to be taken up by plants and posing concerns for human and environmental health.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Chemistry, Physical
Meisam Ashrafivala, Seyed Borhan Mousavi, Saeed Zeinali Heris, Mohammad Heidari, Mousa Mohammadpourfard, Hassan Aslani
Summary: Wastewater recycling and reuse are particularly important in countries with water scarcity issues, and disinfection is a crucial step in achieving this goal. This research investigates the use of the advanced oxidation process combining UV and H2O2 for fecal coliform inactivation in industrial effluent. Optimal disinfection conditions were determined based on parameters such as pH, H2O2 concentration, and contact time. The results show that acidic conditions, increased H2O2 concentration, and longer contact time contribute to higher inactivation rates. The combined UV/H2O2 process is more effective than using UV or H2O2 alone and can meet irrigation standards.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Engineering, Chemical
Mehdi Rafiee, Morteza Sabeti, Farshid Torabi, Aria Rahimbakhsh
Summary: Extensive research has been conducted on the use of advanced oxidation process to reduce chemical oxygen demand (COD) in industrial effluents. Experimental tests were carried out to determine the effects of different additives and UV irradiance on the treatment process. Optimal doses of H2O2, O-3, and UV were identified to achieve the lowest possible COD levels in the effluent.
Article
Engineering, Environmental
Jie Chen, Jinfeng Ling, Bo Sun, Jian Wang, Baoxue Zhou, Xiaohong Guan, Yuankui Sun
Summary: The study investigated the abatement of TrOCs in real waters using the PM/BS process and evaluated its feasibility as a pretreatment process. The results showed that the removal efficiency of TrOCs was influenced by the concentration of dissolved organic matter and halide ions. The PM/BS process showed advantages and could be combined with traditional water treatment processes.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Environmental
Bibai Du, Yuqing He, Bowen Liang, Jiehua Li, Dan Luo, Hui Chen, Liang-Ying Liu, Ying Guo, Lixi Zeng
Summary: The study found that triazine UV filters were present in indoor dust and indoor air in South China, potentially posing risks to human health, but a lack of toxic thresholds has hindered accurate risk assessment.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Environmental Sciences
Daniel Krakko, Adam Illes, Viktoria Licul-Kucera, Bence David, Peter Dobosy, Andrea Pogonyi, Attila Demeter, Victor G. Mihucz, Sandor Dobe, Gyula Zaray
Summary: The combination of high energy VUV photons and O-3 generated by (V)UV lamps proved to be effective in removing active pharmaceutical ingredients from biologically treated wastewater, achieving high removal rates for most target compounds. The technology also demonstrated excellent disinfection capabilities, effectively inactivating various bacteria. This approach may be widely applicable in small settlements or livestock farms for post-treatment of wastewater, potentially providing a solution for micropollutant degradation and water reuse.
Article
Environmental Sciences
Wuchang Song, Congcong Li, Zhenqi Du, Jiangang Yue, Wenjun Sun, Lian Hou, Jianguang Liu, Ruibao Jia
Summary: The UV/H2O2-BAC process is effective for organic matter removal, but efficiency can be affected by low water temperature. The development of BAC contributes to dissolved organic carbon removal.
Article
Engineering, Environmental
S. Guerra-Rodriguez, M. J. Abeledo-Lameiro, M. I. Polo-Lopez, P. Plaza-Bolanos, A. Aguera, E. Rodriguez, J. Rodriguez-Chueca
Summary: This study evaluates the effectiveness of four sulfate radical-based advanced oxidation processes (SR-AOPs) in removing microorganisms, contaminants of emerging concern (CECs), and antibiotic resistance genes (ARGs) in wastewater treatment plants. The PMS/O3 system is found to be the most effective treatment, while also exhibiting phytotoxicity.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Amie C. McElroy, Matthew E. Ogles, Michael R. Hyman, Detlef R. U. Knappe
Summary: A gravity-fed, cometabolic biofiltration system was developed to degrade 1,4-dioxane in drinking water. Results showed that trace levels of 1,4-dioxane can be sustained degraded in biofilters using n-butane as primary substrate, and filter media properties and EBCT affect the efficiency of biofiltration.
Article
Engineering, Environmental
Marc Teixido, Joseph A. Charbonnet, Gregory H. LeFevre, Richard G. Luthy, David L. Sedlak
Summary: Stormwater runoff capture and groundwater recharge can effectively augment local water resources in water-stressed cities. The pilot-scale stormwater treatment system developed in this study demonstrated successful removal of contaminants, but breakthrough of pollutants may occur under certain conditions.
Review
Engineering, Environmental
Yuxin Lu, Xiang Li, Cagnetta Giovanni, Bo Wang
Summary: The presence of emerging organic contaminants in water is a major threat to its safety. Metal-organic frameworks (MOFs) have shown potential for removing these contaminants, but their practical application in wastewater treatment is still debated. This review summarizes recent studies on the use of MOFs for EOCs removal, focusing on synthesis strategies, characterization technologies, as well as their application in adsorption, separation, and catalytic degradation. Overall, MOF-based composites show promise in eliminating EOCs, with modified membranes being the most promising materials for future applications.
FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING
(2023)