Article
Engineering, Environmental
Jessica de Matos Fonseca, Sandra M. Miranda, Joana P. Monteiro, Regina de Fatima Peralta Muniz Moreira, German Ayala Valencia, Alcilene Rodrigues Monteiro, Vitor J. P. Vilar
Summary: This study investigated the oxidation of ethylene using TiO2 photocatalysis in a mili-photoreactor, aiming to develop a clean postharvest technology. The results showed that the catalyst loading, deposition surface, and feed stream humidity strongly influenced the ethylene conversion and reaction rate.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Environmental
Pariya Amigh, Nader Mokhtarani
Summary: The current study focuses on the utilization of Ag-TiO2 nanoparticles for photocatalytic landfill leachate posttreatment. The immobilized photoreactor with silver doped Titanium dioxide nanoparticles coated on rotating vanes is applied for the first time. The system demonstrates high efficiency in COD, color, turbidity, and TOC removal, reaching maximum removal rates of 62%, 66%, 53%, and 55% respectively after 4 hours of irradiation under optimal conditions. The durability of the vanes is also tested and found to be capable of at least six consecutive cycles without significant decrease in treatment efficiency. In comparison to pure TiO2, the synthesized Ag-TiO2 nanoparticles exhibit higher removal rates within equivalent time intervals, making the entire system a promising post-treatment approach.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Chemistry, Physical
Amin Hoseini, Benyamin Yarmand
Summary: The TiO2 photocatalysts with rGO/Fe2O3 sensitizers immobilized on titanium supports through plasma electrolytic oxidation showed improved utilization in the visible region, reduced recombination of photogenerated charge carriers, and enhanced photodegradation of methylene blue solution. Additionally, the sensitizers strengthened the photocorrosion stability by improving microstructure compactness and reducing surface reactivity towards corrosive species under both ambient and xenon lights.
SURFACES AND INTERFACES
(2023)
Article
Materials Science, Ceramics
Patricia Petriskova, Olivier Monfort, Leonid Satrapinskyy, Edmund Dobrocka, Tomas Plecenik, Gustav Plesch, Roman Papsik, Raul Bermejo, Zoltan Lences
Summary: TiO2 nanotubes were prepared on different substrates to compare their photocatalytic activity, and nanotubes grown on Ti foil exhibited the best photocatalytic activity.
CERAMICS INTERNATIONAL
(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
Engineering, Environmental
Mingizem Gashaw Seid, Jeehye Byun, Wooyul Kim, Kangwoo Cho, Seok Won Hong
Summary: The study investigated the effectiveness of photocatalytic pretreatment in minimizing the formation potentials of carcinogenic nitrosamines during water chloramination. The results showed that PCP was more effective for reducing nitrosamine-FPs during post-chloramination, but its efficacy varied with water source, pretreatment pH, and irradiation time. Strategies such as oxygen addition, N-de(m)ethylation, and N-dealkylation were found to be responsible for decreasing nitrosamine-FPs.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Review
Biotechnology & Applied Microbiology
Omar Fawzi Suleiman Khasawneh, Puganeshwary Palaniandy
Summary: The global concern over the accumulation, toxicity, and potential risk of organic pollutants in the aquatic environment is increasing, while conventional wastewater treatment methods are inefficient. Therefore, developing effective techniques for the removal of organic pollutants is crucial. Photocatalysis technology is considered a promising, effective, and sustainable approach, with Fe2O3-TiO2 showing good performance for pollutant removal.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Chemistry, Multidisciplinary
Parisa Yekan Motlagh, Sema Akay, Berkant Kayan, Alireza Khataee
Summary: The Pumice-TiO2-Pd nanocomposite was prepared as an efficient catalyst for the removal of ciprofloxacin, exhibiting high sonophotocatalytic activity. Different radical scavengers and enhancers were tested to adjust the degradation efficiency. The composite showed good reusability and stability with only a slight decrease after four consecutive runs.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Edoardo Raciti, Sai Manoj Gali, Michele Melchionna, Giacomo Filippini, Arianna Actis, Mario Chiesa, Manuela Bevilacqua, Paolo Fornasiero, Maurizio Prato, David Beljonne, Roberto Lazzaroni
Summary: By using density functional theory calculations and experimental EPR measurements, the study reveals that structural defects on the gCN surface can create distinctive radical defect states that are essential for photo-activity in certain amorphous and reduced gCN structures. These defect types act as binding sites for specific radical precursors, facilitating photo-induced charge transfer and triggering specific photo-chemical processes for desired reactions.
Article
Chemistry, Multidisciplinary
Xueqing Shao, Feng Xiao, Xueying Zhao, Zhiyan Hou, Fan Yue, Lu Wang, Ronglan Wu, Jide Wang, Xintai Su, Chao Yang
Summary: Hydrogen production via photocatalytic water splitting using sulfated TiO2 photocatalyst with appropriate content of sulfate ions shows significant quantum efficiency and high production rate, providing inspiration for the rational design and development of high-efficiency photocatalysts.
Article
Engineering, Electrical & Electronic
Majid Jahdi, Edward N. Nxumalo, Sabelo D. Mhlanga, Michele Orlandi, Antonio Miotello
Summary: The optical properties of defective TiO2 make it an excellent photocatalyst for the degradation of persistent drugs like carbamazepine in water systems. By degassing microwave-assisted hydrothermal TiO2, colored TiO2 can be synthesized easily. The modification strategy of TiO2 significantly improves its photocatalytic performance under sunlight irradiation.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2023)
Article
Environmental Sciences
Yu Liu, Lijun Liao, Liping Guo, Zhenzi Li, Xuepeng Wang, Decai Yang, Mingtao Wang, Shijie Wang, Wei Zhou
Summary: Developing photocatalytic technologies with high selectivity for pollutant removal is a significant challenge. In this study, a unique popcorn-stick-like nanocomposite was fabricated and exhibited distinguished photocatalytic activity for simultaneous removal of carbon particles and nitrogen dioxide.
ENVIRONMENTAL RESEARCH
(2024)
Article
Engineering, Environmental
Alan J. Kennedy, Andrew D. McQueen, Mark L. Ballentine, Lauren R. May, Brianna M. Fernando, Arit Das, Kyle L. Klaus, Christopher B. Williams, Michael J. Bortner
Summary: Novel and sustainable solutions for surface water treatment are needed. This research utilizes 3D printing and nanotechnology to create a customizable and deployable structure for immobilizing TiO2, enabling efficient photocatalysis for harmful algal blooms (HAB). The PLA-TiO2 composite exhibits high catalytic performance and can effectively degrade harmful substances in water bodies.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Ivana Grcic, Natalija Koprivanac, Gianluca Li Puma
Summary: The study validated photocatalytic reactor models for the decomposition of oxalic acid (OA) and formic acid (FA) in different configurations, and used a systematic methodology to determine intrinsic reaction kinetics rate parameters for water contaminants. This methodology can be used to predict the photocatalytic oxidation of contaminants in various experimental conditions.
CHEMICAL ENGINEERING JOURNAL
(2021)
Review
Environmental Sciences
Ricardo M. S. Sendao, Joaquim C. G. Esteves da Silva, Luis Pinto da Silva
Summary: TiO2-carbon dots nanocomposites can enhance photocatalytic efficiency by increasing the adsorption of organic pollutants and enhancing absorption in the visible range.
Article
Chemistry, Multidisciplinary
Sukhwa Hong, Kahyun Ham, Jeemin Hwang, Sinwoo Kang, Min Ho Seo, Young-Woo Choi, Byungchan Han, Jaeyoung Lee, Kangwoo Cho
Summary: In this study, a highly efficient and stable oxygen evolution reaction (OER) electrocatalyst is developed by using scalable solution casting method to deposit doped nanoparticles on Ni foam. Advanced X-ray absorption spectroscopy and density functional theory calculations reveal the changes in catalytic active sites, providing new insights for precious-metal doped Ni-Fe oxide electrocatalysts.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Engineering, Environmental
Yeonseo Jeong, Gyeongtaek Gong, Hye-Jin Lee, Jihye Seong, Seok Won Hong, Changha Lee
Summary: Microplastics (MPs) are emerging contaminants that pose threats to the environment and human health. Efficient treatment methods are needed at wastewater treatment plants and drinking water treatment plants. This review explores the potential of various oxidation processes in treating MPs, but many of them have not been widely applied due to cost and lack of research.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Environmental
Beom Joon Kim, Joon-Young Choi, Hye-Jin Lee, Changha Lee
Summary: Advanced oxidation processes (AOPs) have been proposed as alternative methods for treating reverse osmosis (RO) concentrate, which is a major concern for water reclamation plants. Different AOPs, including conventional Fenton, UV/H2O2, ozonation, anodic oxidation, and electro-Fenton processes, were evaluated for their ability to remove dissolved organic carbon (DOC) in RO concentrate. The study also calculated the operation costs of these AOPs. The results showed that conventional Fenton and ozonation processes were the most cost-efficient among the tested methods.
ENVIRONMENTAL ENGINEERING RESEARCH
(2023)
Article
Engineering, Environmental
Dongwon Cha, Gyuseung Lim, Hwajoo Joo, Jeyong Yoon, Changha Lee
Summary: This study demonstrates the feasibility of incorporating experimental results from a pilot-scale UV/H2O2 system into a multiphysics model. Various factors affecting contaminant degradation and oxidant production were investigated, and the model predictions exhibited a good correlation with the experimental results. 3-D visualizations using the model allow further in-depth analysis of the distribution of oxidants and target pollutant in the UV photoreactor, providing insights into the possibilities of reactor optimization.
ENVIRONMENTAL ENGINEERING RESEARCH
(2023)
Article
Biotechnology & Applied Microbiology
Dongwoo Suh, Hoeun Jin, Hosik Park, Changha Lee, Young Hoon Cho, Youngbin Baek
Summary: Virus filtration is an important step in biopharmaceutical downstream processes to ensure viral safety. However, protein fouling poses a challenge to the filtration capacity and may result in virus breakthrough. This study investigated the effects of protein fouling on filtrate flux and virus breakthrough using different commercial membranes. The results showed that protein concentration and hydrodynamic forces influenced the flux decay tendency, and membranes with larger pore diameters were more prone to virus breakthrough.
BIOTECHNOLOGY AND BIOENGINEERING
(2023)
Article
Engineering, Chemical
Min Sik Kim, Dongwon Cha, Se Mi Lee, Hyungjin Jeong, Changha Lee
Summary: This study presents four models for predicting the rate of brine evaporation from different meteorological factors. The models were validated through laboratory and outdoor experiments, showing good accuracy and reliability.
Article
Engineering, Environmental
Hye-Jin Lee, Minjung Shin, Min Sik Kim, Taewan Kim, Ki-Myeong Lee, Noh-Back Park, Jong-Chan Lee, Changha Lee
Summary: This study evaluated four different chemical disinfectants for their potential use in inland fish farms to control red tides. It found that ozone (O3) and permanganate (MnO4 ) showed the highest efficacy in inactivating C. polykrikoides cells. Sodium hypochlorite (NaOCl) and hydrogen peroxide (H2O2) also showed effectiveness but produced byproducts and had lower toxicity to fish. Based on the overall factors, H2O2 was suggested as the most practical disinfectant for controlling red tides in inland fish farms.
Article
Nanoscience & Nanotechnology
Evandi Rahman, Jiho Lee, Seung Ji Lim, Aseom Son, Jiyun Han, Kangwoo Cho, Seok Won Hong
Summary: We developed low-cost cathodes for the electrochemical reduction of NO3- in wastewater. By simple reconstruction of stainless steel, we obtained cathodes with superior stability and efficiency, making them suitable for NO3- removal in wastewater treatment.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Minjeong Kim, Jaemin Choi, Woonghee Lee, Yong-Yoon Ahn, Hangil Lee, Kangwoo Cho, Jaesang Lee
Summary: This study compared hydrogen annealing and cathodic polarization as strategies to fabricate electrically conducting titanium oxides through oxygen non-stoichiometry creation for anodic water treatment. Ti4O7 exhibited higher electrical conductivity and superior performance in chlorine evolution and anodic organic oxidation. Hydroxyl radical primarily contributed to anodic oxidation, and self-doped TiO2 underwent more drastic performance reduction and vulnerability to activity loss and structural damage.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Biotechnology & Applied Microbiology
Dongwoo Suh, Hoeun Jin, Changha Lee, Youngbin Baek
Summary: Virus filtration in biopharmaceutical downstream process ensures viral safety, but there is a risk of virus breakthrough. This study used Viresolve & REG; Pro membrane to investigate virus breakthrough under various conditions. The results suggest that protein concentration and low flux operation can increase the likelihood of virus escape through the membrane. These findings provide important insights for ensuring viral safety in biopharmaceutical production.
BIOCHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Woongbae Lee, Sangki Choi, Hyunjin Kim, Woorim Lee, Minju Lee, Heejong Son, Changha Lee, Min Cho, Yunho Lee
Summary: This study assessed and compared the efficiencies of ozonation and ozone with hydrogen peroxide for the removal of organic micropollutants (OMPs), as well as the inactivation of bacteria and viruses, and the formation of bromate and biodegradable organics in municipal wastewater effluent. The results showed that ozonation effectively eliminated 39 OMPs, with 22 OMPs achieving a removal rate of 54 ± 14% at an ozone dosage of 0.5 gO(3)/gDOC. The concentration and exposure time of ozone were positively correlated with microbial inactivation levels, and O-3/H2O2 minimized bromate formation but decreased bacteria/virus inactivation. Ozonation also produced biodegradable organics, which could be removed through post-biodegradation treatment.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Environmental
Sung Ho Chae, Seung Ji Lim, Mingizem Gashaw Seid, Wondesen Workneh Ejerssa, Aseom Son, Heejong Son, Sangki Choi, Woongbae Lee, Yunho Lee, Seok Won Hong
Summary: This study aimed to implement a comprehensive prediction model for the fate of micropollutants in wastewater treatment plants (WWTPs). Through monitoring five WWTPs in South Korea, it was found that the majority of micropollutants were effectively removed by biological treatment processes. Furthermore, the prediction model was improved by optimizing the biodegradation rate constants of each micropollutant, resulting in more accurate predictions of actual data.
Article
Engineering, Environmental
Ji Won Lee, Donghyun Lee, Hye-Jin Lee, Soojin Shim, Je Hun Kim, Changha Lee
Summary: This study observed that the oxidative degradation of urea by chlorination can be enhanced by a pH swing, where the first stage reaction occurs under acidic pH and the second stage reaction occurs at a neutral or alkaline pH. The degradation rate of urea is influenced by chlorine dose and pH in the second stage. pH-swing chlorination is based on the pH dependence of urea chlorination sub-processes. The formation of different chlorinated ureas is favored under specific pH conditions.
Article
Environmental Sciences
Chengsong Ye, Kaiting Zhang, Peizhe Sun, Yunho Lee, Kyriakos Manoli, Xin Yu, Mingbao Feng
Summary: This study presents an advanced oxidation strategy using ruthenium(III) and periodate, which can rapidly eliminate microbial and chemical pollutants in water, including bacteria, bacteriophage MS2, antibiotic resistance genes, and organic micropollutants.
Article
Nanoscience & Nanotechnology
Evandi Rahman, Sukhwa Hong, Jaesang Lee, Seok Won Hong, Kangwoo Cho
Summary: This study reports a Ni0.33Fe0.67Oy/TiO2 heterojunction anode prepared by sol-gel coating and thermal decomposition, which showed comparable ClER efficiency to benchmarking Ir7Ta3Oy/TiO2 in neutral NaCl solutions. The outer TiO2 was identified as the active ClER center. Ni0.33Fe0.67Oy exhibited superior OER activity compared to other Fe-doped Ni oxides, indicating its potential as an ohmic contact for ClER.
ACS APPLIED MATERIALS & INTERFACES
(2023)
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.
