Article
Chemistry, Physical
Chrysanthi Berberidou, Petros Kokkinos, Ioannis Poulios, Dionissios Mantzavinos
Summary: The research findings suggest that there is an optimal concentration of Fenton reagents for degrading clopyralid, excessive concentrations may have detrimental effects. Catalytic degradation under visible light is as effective as under UV-A, highlighting the potential of using natural sunlight as a renewable energy source. The treatment method shows promising perspectives in upgrading water and liquid waste quality containing pesticides.
Article
Engineering, Environmental
Gokulakrishnan Subramanian, Halan Prakash
Summary: The visible light/Cu(II)/H2O2 system showed enhanced disinfection compared to the Cu(II)/H2O2 system without the need for reducing agents or organic ligands. Experimental results demonstrated that the visible light/Cu(II)/H2O2 system caused significant damage to bacterial cell membranes and proposed a ligand to metal charge transfer mechanism for enhanced disinfection. Energy efficiency and cost-effectiveness of the visible light/Cu(II)/H2O2 system were determined to be favorable for practical applications.
Article
Engineering, Chemical
Javier Tejera, Daphne Hermosilla, Antonio Gasco, Ruben Miranda, Victor Alonso, Carlos Negro, Angeles Blanco
Summary: This study aims to optimize a two-step treatment for mature landfill leachate using electrocoagulation (EC) followed by Fenton or UVA-LED photo-Fenton processes, in order to provide a more efficient and feasible treatment strategy that increases biodegradability and decreases conductivity. The research found that higher EC current density results in higher residual iron concentration, which can reduce treatment time for subsequent Fenton processes. Overall, the total COD removal rate was around 87%, with improvements in SUVA removal, conductivity reduction, and biodegradability.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2021)
Article
Engineering, Chemical
Ana Paula Floriano Santos, Fabio Gozzi, Adriana Evaristo de Carvalho, Keila Roberta Ferreira de Oliveira, Anderson Rodrigues Lima Caires, Rodrigo Pereira Cavalcante, Rebeca Fabbro Cunha, Debora Antonio da Silva, Diego Roberto Vieira Guelfi, Lucas de Melo da Silva, Thalita Ferreira da Silva, Gleison Antonio Casagrande, Silvio Cesar de Oliveira, Amilcar Machulek Junior
Summary: This study investigated the use of solar photo-Fenton-like processes to degrade sanitary landfill leachates. The results showed that using Fe3+ as a coagulant combined with the photo-Fenton-like method effectively removed COD and DOC, improving the biodegradability and reducing the toxicity of the effluent. This method holds promising potential as a treatment method for wastewater.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Chemical
Xuan Liu, Wen Wang, Haibo Lin, Yi Shen, Qile Fang, Fu Liu
Summary: Solar-driven photocatalysis using Prussian blue microcrystals with different morphologies shows improved catalytic efficiency, broader sunlight absorption, and enhanced photothermal conversion properties, leading to effective organic pollutants removal.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Review
Green & Sustainable Science & Technology
Lingyun Fan, Xujia Zhang, Shuying Zang, Hanxi Wang
Summary: The photo-induced toxicity of pesticides has become a focus in environmental risk research. Some pesticides use light radiation as a switch to control toxic activity. However, the generation of more toxic photo products under sunlight radiation is undesirable.
JOURNAL OF CLEANER PRODUCTION
(2023)
Review
Engineering, Environmental
M. D. N. Ramos, C. S. Santana, C. C. V. Velloso, A. H. M. da Silva, F. Magalhaes, A. Aguiar
Summary: Effluents from the textile industry pose environmental concerns due to high volumes, organic matter, and toxic substances. Fenton oxidation processes, especially photoFenton, show promise as efficient alternatives for treatment of textile effluents, reducing organic pollutants and color effectively.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2021)
Article
Chemistry, Physical
Tahira Khatoon, Vishal Singh Chandel, Navshad Alam, Ameer Azam, Seema Srivastava, Salman Khan
Summary: In this study, LaxNi0.5Co0.5Fe2-xO4 nanoparticles were used as catalysts for Methylene Blue degradation. The nanoparticles were produced using the citrate-aided sol-gel auto-combustion method and exhibited homogeneous size distribution. The structural and optical characteristics of the nanoferrites were analyzed using X-ray diffraction and UV-visible reflectance spectroscopy respectively. Morphological and compositional studies were conducted using FESEM and EDX spectra, while BET analysis was used to determine the surface area. Raman Spectroscopy was employed to estimate the vibration parameters. The most efficient catalyst, La0.06Ni0.5Co0.5Fe1.94O4, achieved a 98.69% efficiency in 140 minutes. The use of La3+ substituted Ni0.5Co0.5Fe2O4 nanoferrites as catalysts offers advantages such as high recycling capability, stability, and simplicity of separation using an external magnet.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Environmental
Lei Qin, Zhihong Wang, Yukui Fu, Cui Lai, Xigui Liu, Bisheng Li, Shiyu Liu, Huan Yi, Ling Li, Mingming Zhang, Zhongwu Li, Weicheng Cao, Qiuya Niu
Summary: A series of MnFe2O4-Au (MFO-Au) composites were prepared for efficient photo-Fenton degradation of tetracycline (TC) by utilizing the synergistic effect of MFO and gold nanoparticles (AuNPs). The composites showed outstanding catalytic performance in neutral conditions, with efficient removal of TC and decrease in TOC. The study also demonstrated the potential for reducing toxicity and provided guidance for the design of stable noble nanoparticle and bimetallic oxide combinations in photo-Fenton reactions.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Environmental Sciences
Jia Wang, Shaochen Li, Yandong Yang, Lingyun Fan, Weichao Qin, Limin Su, Yuanhui Zhao, Chao Li
Summary: The phototransformation behavior and toxicity evolution of two widely used chiral pesticides (triadimefon (TF) and triadimenol (TN)) are systematically investigated in this study. Results show that TF and TN could be photodegraded faster in pure water than in natural waters, and the observed photolysis rate constants (kobs) of TN with two chiral centers exhibit enantioselectivity. TF and TN exhibit photo-induced toxicity to V. fischeri, and TN also exhibits enantioselective photoinduced toxicity after 240-min irradiation, which could be ascribed to the formation of chiral products.
ENVIRONMENT INTERNATIONAL
(2023)
Article
Engineering, Environmental
Yasser Vasseghian, Fares Almomani, Van Thuan Le, Masoud Moradi, Elena-Niculina Dragoi
Summary: This study evaluated the degradation efficiency of Malathion using three processes (Fenton, photo-Fenton, sono-photo Fenton), with the sono-photo Fenton process proving to be the most effective. The toxicity of the byproducts from the degradation was assessed.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Environmental Sciences
Mayra Lissette Gorozabel-Mendoza, Otoniel Anacleto Estrela Filho, Luis Angel Zambrano-Intriago, Ricardo Jose Baquerizo-Crespo, Jose Miguel Giler-Molina, Joan Manuel Rodriguez-Diaz
Summary: This research evaluated homogeneous advanced oxidation processes for the mixed degradation of food dyes blue 1 and yellow 6, and optimized the treatment conditions through experimental designs. The most efficient treatment was determined to be photo-Fenton assisted by sunlight radiation, achieving high degradation rates and reduction in chemical oxygen demand within 120 minutes.
WATER AIR AND SOIL POLLUTION
(2021)
Article
Environmental Sciences
Christiarani Jegadeesan, Adishkumar Somanathan, Rajesh Banu Jeyakumar, V. Godvin Sharmila
Summary: The combined process of electrocoagulation and solar photo Fenton was used to treat landfill leachate, resulting in effective removal of COD and colour. The electrocoagulation process and solar photo Fenton process improved the biodegradability of the leachate, making it a viable treatment technique.
ENVIRONMENTAL TECHNOLOGY
(2023)
Article
Engineering, Environmental
Fu-Xue Wang, Chong-Chen Wang, Xuedong Du, Yang Li, Fei Wang, Peng Wang
Summary: A 2D micron-sized MOF sheet, BUC-21(Fe), was successfully synthesized and used in efficiently removing chloroquine phosphate (CQ) through the photon-Fenton process. X-ray absorption fine structure (XAFS) was used to detect the oxidation state and content of iron in the material.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
P. Garcia-Negueroles, S. Garcia-Ballesteros, L. Santos-Juanes, C. Sabater, M. A. Castillo, M. F. Lopez-Perez, R. Vicente, A. M. Amat, A. Arques
Summary: This study utilized olive mill waste-derived humic-like substances (OMW-HLS) as catalysts for the photo-Fenton process, demonstrating their ability to enhance reactions at acidic pH. Results showed faster pollutant removal in the presence of OMW-HLS, with detoxification observed although slightly higher toxicity was detected when commercial humic substances were present.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Environmental Sciences
Isaac Sanchez-Montes, Irene Salmeron, Jose M. Aquino, Maria Inmaculada Polo-Lopez, Sixto Malato, Isabel Oller
Summary: The study evaluated the effectiveness of a solar-driven free chlorine advanced oxidation process for removing organic microcontaminants and bacteria from natural water. Results showed high removal efficiency both at laboratory and pilot-scale, making the process a promising method for water treatment.
Review
Chemistry, Multidisciplinary
Sara Garcia-Ballesteros, Paula Garcia-Negueroles, Ana M. Amat, Antonio Arques
Summary: This work summarizes the application of humic-like substances (HLSs) in advanced oxidation processes for wastewater treatment. HLSs have important characteristics similar to humic substances and can be isolated from different wastes. They can generate reactive species upon irradiation. Although HLSs can remove pollutants through photochemical processes, the irradiation times are generally long. HLSs also act as good metal-complexing agents and can participate in (photo)-Fenton-like processes at mild pH. Additionally, novel hybrid materials with environmental applications have been synthesized using HLSs.
Article
Chemistry, Physical
Dennis Deemter, Fabricio Eduardo Bortot Coelho, Isabel Oller, Sixto Malato, Ana M. Amat
Summary: This study assessed the combination of a photocatalytic membrane and solar photo-Fenton treatment for the filtration and treatment of urban wastewater. The results showed that the photocatalytic membrane significantly reduces turbidity and improves degradation efficiency.
Article
Engineering, Chemical
Mads Koustrup Jorgensen, Dennis Deemter, Lars Wagner Staede, Luna Gade Sorensen, Laerke Norgaard Madsen, Isabel Oller, Sixto Malato, Thorbjorn Terndrup Nielsen, Vittorio Boffa
Summary: This paper proposes a solution to enhance the retention of micropollutants in nanofiltration by adding cyclodextrins (CDs) for complexation. The results show that the addition of CDs significantly improves the rejection rates of ibuprofen, bisphenol A, and phenol compared to filtration without CDs. Furthermore, the complexation of CDs allows for filtration with ultrafiltration (UF) membranes, reducing operational expenses.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2022)
Article
Biochemistry & Molecular Biology
Ivan Sciscenko, Paula Garcia-Negueroles, Ana Maria Amat, Isabel Oller, Carlos Escudero-Onate, Laura Ferrando-Climent, Antonio Arques
Summary: In this work, EEM-PARAFAC was used as a low-cost tool to study the oxidation pathways of (fluoro)quinolones. The results showed the existence of photoproducts with hydroxylation or alkyl cleavages, defluorination, hydroxylation, and piperazine ring cleavage. The study also demonstrated the potential of PARAFAC to analyze contaminants of emerging concern removals in complex matrices.
Article
Engineering, Environmental
Alejandro Cabrera-Reina, Marina Aliste, Maria Inmaculada Polo-Lopez, Sixto Malato, Isabel Oller
Summary: This study focuses on understanding the interactions between a complex water matrix and the process of removing a mixture of microcontaminants (acetamiprid, carbamazepine, and caffeine) using the solar/Fe3+-EDDS/persulfate process. The effects of sulfates, nitrates, bicarbonates, and chlorides on the process were assessed in different synthetic and actual water samples. The results showed that bicarbonates and chlorides have a significant impact on the efficiency of microcontaminant removal in complex water matrices, while dissolved organic matter had a negative effect on removal efficiency depending on its concentration and composition.
Article
Chemistry, Physical
Victoria Duarte-Alvarado, Lucas Santos-Juanes, Antonio Arques, Ana Maria Amat
Summary: The degradation of various preservatives in the cosmetics industry was investigated using a mild photo-Fenton process. The presence of iron chelators improved the degradation process, but the complexing effect of humic-like substances was found to be ineffective in the case of methylisothiazolinone (MIT). The inhibitory effect of MIT on the degradation of parabens was observed, suggesting the formation of a complex between iron and MIT. The findings highlight the importance of using mixtures of model contaminants in future studies to understand the behavior of the whole system.
Article
Environmental Sciences
Ruben Lopez-Timoner, Margarita Mora, Elena Zuriaga, Javier Climent, Lucas Santos-Juanes, Ana M. Amat, Antonio Arques
Summary: The aim of this study is to investigate the enhancement of UVC-based tertiary treatments. Real wastewater treatment plant effluent was spiked with acetaminophen as a model pollutant. UVC irradiation showed some photodegradation of acetaminophen, which was further enhanced by hydrogen peroxide, but excessive amounts of the oxidizing agent did not accelerate the process significantly.
Article
Chemistry, Physical
Ivan Valles, Ivan Sciscenko, Margarita Mora, Pau Mico, Ana M. Amat, Lucas Santos-Juanes, Javier Moreno-Andres, Antonio Arques
Summary: In this study, the effect of Fe(III) complexation by phenolic derivatives on photo-Fenton was systematically investigated. Solutions containing a mixture of six pollutants were treated by solar simulated photo-Fenton under specific conditions. It was found that the efficiency of ligands increased with the presence of -OH groups, but decreased with the presence of -COOH and -OCH3 groups, which was correlated with the ability of ligands to reduce Fe(III) to Fe(II).
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Green & Sustainable Science & Technology
Gulnara Maniakova, Maria Inmaculada Polo Lopez, Isabel Oller, Sixto Malato, Luigi Rizzo
Summary: Solar driven advanced oxidation processes (S-AOPs) have been successfully studied as tertiary and quaternary treatment of urban wastewater. However, their application has been hindered by the lack of comparison data with consolidated technologies and evaluation of environmental impact. This study compared the environmental impact of a new S-AOP called sequential treatment (ST) with sunlight/H2O2 and solar photo-Fenton (SPF) to pilot scale ozonation (O-3) treatment through Life Cycle Assessment (LCA). The results showed that ST had a better overall environmental performance compared to O-3, making it a more sustainable solution for small urban wastewater treatment plants.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Environmental Sciences
Ruben Lopez-Timoner, Victoria Duarte-Alvarado, Maria Angeles Castillo, Lucas Santos-Juanes, Antonio Arques, Ana Maria Amat
Summary: This study investigates the simultaneous degradation of preservatives such as parabens and methylisothiazolinone. The results show that UV light is inefficient in degrading parabens but efficiently degrades MIT. Ozone treatments rapidly degrade the paraben mixture, especially at basic pH. The simultaneous treatment with ozone and UV light is the fastest method for eliminating both parabens and MIT. However, when treating joint mixtures of parabens and MIT, behaviors change notably, particularly for processes involving UV light due to the interfering effect of MIT.
Article
Engineering, Environmental
Rong-Gui Zhu, Chang-Gui Pan, Feng-Jiao Peng, Chao-Yang Zhou, Jun-Jie Hu, Kefu Yu
Summary: This comprehensive survey investigated the occurrence, bioaccumulation, and trophic magnification of parabens and their metabolite 4-HB in a marine food web. Results showed that parabens were the predominant pollutants in marine organisms, with significant bioaccumulation from sediments. The estimated trophic magnification factor indicated biomagnification for MeP and trophic dilution for 4-HB. Overall, the risks for humans consuming marine organisms were found to be low.
Article
Engineering, Environmental
Andres F. Torres-Franco, Deborah Leroy-Freitas, Cristina Martinez-Fraile, Elisa Rodriguez, Pedro A. Garcia-Encina, Raul Munoz
Summary: Anaerobic and microalgae-based technologies have emerged as sustainable alternatives for municipal wastewater treatment. However, the presence of viruses in the treated wastewater is a major concern for reuse applications. This study assessed the ability of these technologies to reduce viruses during secondary wastewater treatment. The results showed that all technologies were effective in reducing the concentration of viruses, with microalgae-based treatment exhibiting the highest potential for reducing the disinfection requirements of treated wastewater.
Article
Engineering, Environmental
Young Gwang Kim, Sae Yun Kwon, Spencer J. Washburn, Scott C. Brooks, Ji Won Yoon, Lucien Besnard
Summary: The study uses Hg isotope ratios to identify the sources and exposure pathways of mercury in bivalves, finding that dissolved Hg phases in the water column are the primary source and exposure pathway to bivalves. This provides new insights into using bivalves as bioindicators for sediment quality monitoring.
Article
Engineering, Environmental
Hui Geng, Ying Xu, Rui Liu, Dianhai Yang, Xiaohu Dai
Summary: This study investigates the effect of cation exchange resin (CER) on the sequential recovery of hydrogen and methane from anaerobic digestion (AD) and the corresponding mechanisms. The results show that CER can simultaneously enhance the production of hydrogen and methane by promoting the solubilisation, hydrolysis, and acidification of organic matter. Additionally, CER facilitates effective contact between bacteria and organic particulates and reduces the energy barrier for mass transfer during methane production. The study also reveals changes in the microbial community structure and metagenomics during the AD process.
Article
Engineering, Environmental
Xiaojing Lin, Zhan Jin, Shunfeng Jiang, Zhiquan Wang, Suqing Wu, Ke Bei, Min Zhao, Xiangyong Zheng
Summary: Dehumidification combined with addition of absorbent resin supplement (ARS) was used to achieve rapid evaporation of non-pretreated urine, resulting in high water evaporation efficiency and nutrient recovery.
Article
Engineering, Environmental
Yangli Che, Chaoran Lin, Shen Li, Jiao Liu, Longhai Zhu, Shilei Yu, Nan Wang, Haoshuai Li, Mutai Bao, Yang Zhou, Tonghao Si, Rui Bao
Summary: Hydrodynamic processes play a crucial role in the transmission of sediments, microbial assembly, and organic carbon redistribution in the ocean. Through experiments and analysis, we found that hydrodynamics shape the assembly of microbial communities and control the redistribution of different sourced organic carbon, thereby influencing microbial-mediated biogeochemical transformation.
Article
Engineering, Environmental
Chao Chen, Yu Yang, Nigel J. D. Graham, Zhenyu Li, Xingtao Yang, Zhining Wang, Nadia Farhat, Johannes S. Vrouwenvelder, Li -an Hou
Summary: The fouling of seawater reverse osmosis membranes is a persistent challenge in desalination. This study monitored the operational performance of a desalination plant for 7 years and the fouling development in different areas of membrane modules. The findings showed that operational performance declined over time and fouling mainly occurred at the feed side of the modules, with the highest microbial diversity. Keystone species like Chloroflexi and Planctomycetes played an important role in maintaining community structure and biofilm maturation. Polysaccharides, soluble microbial products, marine humic acid-like substances, and inorganic substances contributed to fouling. Overall, biofouling had a significant impact on membrane fouling after 7 years of operation.
Article
Engineering, Environmental
Dan Li, Jieyi Sun, Yibo Fu, Wentao Hong, Heli Wang, Qian Yang, Junhong Wu, Sen Yang, Jianhui Xu, Yunfei Zhang, Yirong Deng, Yin Zhong, Ping'an Peng
Summary: Sulfidation-oxidation treatment of magnetite (Fe3O4) enhances the production of dark center dot OH, which can efficiently degrade dissolved organic matter (DOM) and accelerate carbon cycling.
Article
Engineering, Environmental
Cheng Yu, Kaijun Wang, Kaiyuan Zhang, Ruiyang Liu, Pingping Zheng
Summary: This study implemented a microaerobic-aerobic configuration in a full-scale municipal wastewater treatment facility and investigated the effects on sludge characteristics, pollutant removal, microbial community, and granulation mechanisms. The results showed successful transition from flocculent-activated sludge to well-defined AGS after two months of operation. The primary pathways for pollutant removal were simultaneous nitrification, denitrification, and phosphorus removal. Moreover, the incorporation of internal separators induced shifts in the flow pattern, which promoted granulation.
Article
Engineering, Environmental
Zhe Zhang, Shaoyang Hu, Guangrong Sun, Wei Wang
Summary: Halogenated aromatic disinfection byproducts (DBPs), such as halogenated phenols, have garnered widespread attention due to their high toxicity and prevalence. This study reports on the analysis, occurrence, and cytotoxicity of a group of emerging halogenated aromatic DBPs, known as halogenated polyhydroxyphenols (HPPs), in drinking water.
Article
Engineering, Environmental
Shengyue Chen, Jinliang Huang, Peng Wang, Xi Tang, Zhenyu Zhang
Summary: Accurate prediction of river water quality is crucial for sustainable water management. This study introduces wavelet analysis and transfer learning techniques to assist LSTM modeling, proposing a newly coupled modeling approach that improves short-term prediction of river water quality.
Article
Engineering, Environmental
Bang Du, Xinmin Zhan, Piet N. L. Lens, Yifeng Zhang, Guangxue Wu
Summary: Efficient anaerobic digestion relies on the cooperation of different microorganisms with different metabolic pathways. This study investigated the effects of different operational modes and the addition of powdered activated carbon (PAC) on ethanol metabolic pathways. The results showed that the SBR mode and the presence of CO2 facilitated ethanol metabolism towards propionate production, while the CFR mode with extended solids retention time enriched Geobacter. Adjusting operational modes and PAC addition can modulate anaerobic ethanol metabolism and enrich Geobacter.
Article
Engineering, Environmental
Wanfa Wang, Si-Liang Li, Jun Zhong, Yuanbi Yi, Fujun Yue, Zenglei Han, Qixin Wu, Ding He, Cong-Qiang Liu
Summary: This study compares the carbon biogeochemical processes in karst and non-karst regions within large thermal stratified river-reservoir systems. The results demonstrate that karst reservoirs have a reduced potential for carbon emissions and highlight the importance of considering geologic settings to improve accuracy in regional and global CO2 emission estimates.
Article
Engineering, Environmental
Chunxia Jiang, Zelong Zhao, Dong Zhu, Xiong Pan, Yuyi Yang
Summary: This study analyzed the occurrence and distribution of antibiotic resistance genes (ARGs) in different environmental media of the Yangtze River using metagenomics. Core resistome dominated by multidrug resistance genes was found in all samples, while rare resistome dominated by various resistance genes was more prevalent in plasmids. Specific bacteria were identified as hosts for both core and rare resistomes, with high clinical concern ARGs found in the rare resistome. Particle-associated environment provided the most ideal conditions for resistome hosts. This study provided insights into the genetic locations of ARGs and the community assembly mechanisms of ARG hosts in freshwater environments.
Article
Engineering, Environmental
Yu Zhang, Yongtao He, Linchun Jia, Lei Xu, Zheng Wang, Yueling He, Ling Xiong, Xumeng Lin, Hong Chen, Gang Xue
Summary: By synergizing organic carbon source, thiosulfate, and zero-valent iron, efficient mixotrophic denitrification of oligotrophic secondary effluent can be achieved. Thiosulfate plays a vital role in promoting TN removal efficiency, while corrosion of Fe0 releases OH- to neutralize H+ from thiosulfate-driven denitrification, creating a suitable environment for denitrification. The coordination of thiosulfate and Fe0 maintains the dominance of Thiobacillus for denitrification.
