Article
Environmental Sciences
Ping Zhang, Sihan Zhu, Chao Xiong, Bin Yan, Zhikang Wang, Kai Li, Irumva Olivier, Han Wang
Summary: This study investigated the critical conditions and mechanisms for flocculation of Chlorella vulgaris induced by five different flocculants. The results identified the optimal conditions for achieving efficient flocculation and revealed the underlying mechanisms involved. PDADMAC was found to be an excellent flocculant for removing and recycling Chlorella vulgaris, particularly in water bloom treatment.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Liyi Zhu, Peng Yang, Kun Wang, Wensheng Lyu
Summary: The influence of ultrasonication on flocculant dosage in the dehydration process of unclassified tailings was investigated. The effects of flocculant dosage on settling rate, underflow concentration, and settling time were studied. The directional characteristics of ultrasound transducers in the tailings slurry were simulated. The relationship between flocculant dosage and fractal dimension was analyzed. The study revealed the mechanism of flocculant on the settling and thickening of unclassified tailings.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Chemical
Yongjun Sun, Yuanyuan Yu, Deng Li, Jun Zhai, Huaili Zheng
Summary: The study investigated the coagulation behavior and floc characteristics of a hybrid flocculant called PAC-CA for removing TiO2 nanoparticles. Various factors such as monomer mass ratio, initiator concentration, and reaction temperature were studied to optimize the coagulation performance. The characterization of PAC-CA through different methods revealed its successful copolymerization and the effect of additives like kaolin and humic acid on coagulation efficiency.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Environmental Sciences
Qian Tang, Wei Chen, Xinning Dai, Yuchen Liu, Hong Liu, Liangqian Fan, Hongbing Luo, Lin Ji, Ke Zhang
Summary: By using nano-TiO2 as initiator, a hydrophobic modified cationic flocculant named PAD was successfully synthesized with AM and DML as monomers, demonstrating superior flocculation performance in removing simulated emulsified oil compared to traditional flocculants. The study suggests a promising prospect for nano-TiO2 in polymer-initiated polymerization.
Article
Chemistry, Physical
Zulfauzein Nadra, Yizhou Sang, Peter Englezos
Summary: This study investigated the flocculation performance of two cationic starches with different charge densities with kaolin clay through small angle light scattering experiments. The results showed that shear and starch concentration were important factors affecting the floc size for both starches. Additionally, temperature was found to be significant only for the higher charge density cationic starch S880, while the combination effects of NaCl and starch concentration, as well as temperature and starch, were significant for the floc size of the S880 system. The combination effect of shear rate and NaCl was found to be significant for the floc size induced by the low charge density S858.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Multidisciplinary Sciences
Chuanxin Lou, Jinyu Xu, Tengjiao Wang, Weibo Ren
Summary: This paper investigates the microstructure and pore structure properties of polymer-cement composite joint sealants for pavements, and analyzes the effects of various material types, ratio parameters, and processing conditions. The study finds that measures such as increasing the powder-liquid ratio, blending with certain types of cement or powders, and adding certain agents can reduce the total pore volume and refine the pore structure of the sealants. However, using low-grade cement, blending with styrene-acrylic emulsion, or adding plasticizer will have the opposite effects.
SCIENTIFIC REPORTS
(2021)
Article
Environmental Sciences
Yuxing Li, Lili Liang, Shuai Zhang
Summary: The fractal dimension (FD) is a classical nonlinear dynamic index that reflects the dynamic transformation of a signal. However, it can only capture signal information of a single scale in the entire frequency band. To address this limitation, a refined composite multi-scale FD (RCMFD) is proposed, which combines refined composite multi-scale processing with FD to capture multi-scale signal information. Hierarchical RCMFD (HRCMFD) is introduced to represent multi-scale signal information in sub-frequency bands. Two ship-radiated noise (SRN) multi-feature extraction methods based on RCMFD and HRCMFD are proposed, which effectively discriminate different signals.
Article
Engineering, Environmental
Bingcong Zhang, Bifei Mao
Summary: In this study, a novel magnetic starch-grafted-cationic polyacrylamide composite (MAG@ST-g-CPAM) was developed as a flocculant for algae harvesting. The efficiency of the composite was compared to other flocculants, and the optimal feeding ratios and impacting factors were determined. The MAG@ST-g-CPAM flocculant showed superior harvesting efficiencies and facilitated water reuse through the elimination of fulvic acids.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Environmental Sciences
Linlin Cui, Courtney K. Harris, Danielle R. N. Tarpley
Summary: The study investigates the impact of OPAs formation on the vertical transport of oil and mineral particles in turbid waters. A module, OPAMOD, is developed to account for OPAs formation and shown to reproduce the size distribution of aggregates from laboratory experiments. Model parameters influence the OPAs size distribution and oil sequestration, while the vertical distribution of suspended sediment affects OPA formation.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Engineering, Chemical
Williams H. Leiva, Eder Piceros, Pedro Robles, Ricardo I. Jeldres
Summary: The study analyzed the impact of shear rate on the structural properties of aggregates obtained during the flocculation of clay-based tailings with an anionic polyacrylamide. The results showed that an increase in shear rate in seawater leads to less compact aggregates with more open structures.
MINERALS ENGINEERING
(2022)
Article
Mathematics, Interdisciplinary Applications
Zhong Dai, Shutang Liu
Summary: In this paper, we construct a composite fractal interpolation function and prove that the composition of two general fractal interpolation functions is also a fractal interpolation function. The generating iterated function system of the composite function is obtained from given iterated function systems. Finally, we discuss the box dimension of the composite fractal interpolation function and provide an inequality estimate for the upper and lower box dimensions.
CHAOS SOLITONS & FRACTALS
(2023)
Article
Engineering, Environmental
Sabrina de Oliveira Anicio, Veronica dos Santos Lopes, Andre Luiz de Oliveira
Summary: The study compared the evolution of PSD and D-f parameters during coagulation and flocculation processes with different chemical coagulants and conditions. It was found that the PSD beta(1) parameter tends to increase over time, indicating formation of larger particles, but decreases after initial growth with higher coagulant dosages and use of certain chemicals. The D-f parameter stabilizes during most of the flocculation process, suggesting that the structural organization of flocs is not necessarily linked to variations in size.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Physics, Fluids & Plasmas
E. G. Iashina, E. Yu Varfolomeeva, R. A. Pantina, V. Yu Bairamukov, R. A. Kovalev, N. D. Fedorova, V Pipich, A. Radulescu, S. Grigoriev
Summary: The study on rat lymphocyte nuclei using small-angle neutron scattering (SANS) revealed the bifractal nature of chromatin structural organization with different fractal dimensions on varying scales. The contrast variation in SANS measurements showed similarity in the structural organizations of nucleic acids (NA) and proteins, both exhibiting bifractal behavior. The details of fractal arrangement and interaction between nuclear acids and proteins were found to be specific to different cells and related to their functionality.
Article
Engineering, Civil
Chao Guo, Andrew J. Manning, Sarah Bass, Leicheng Guo, Qing He
Summary: This study examined the changes in floc size distributions and fractal dimensions under varying turbulent shear, salinity, and suspended sediment concentration. Results showed that turbulent shear plays a dominant role in controlling floc structure, with flocs formed under larger shear force being more compacted and having larger fractal dimensions. The understanding gained from this research has implications for the management of fine sediment and adherent nutrients in different natural water environments.
JOURNAL OF HYDROLOGY
(2021)
Article
Engineering, Environmental
Xiaohang Zhang, Yanping Liu, Ming Wei, Jinlong Tan, Tingchao Yang, Xuwen He
Summary: This study focused on screening optimal reaction conditions for ballasted flocculation and deriving the settling velocity of ballasted flocs under these conditions. The results showed that the settling time could be effectively shortened and the turbidity removal rate could reach more than 95% within 15 seconds. The findings may have significant potential for engineering application in treating high-suspended solids in coal mining water.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Article
Chemistry, Multidisciplinary
Zepeng Zhang, Yunyun Li, Longzhang Dong, Zhonglong Yin, Ziqi Tian, Weiben Yang, Zhen Yang
Summary: The hydroxyl radicals ('OH) generated on the anode play a crucial role in the electrochemical oxidation (EO) of organic pollutants for water treatment. Inspired by the oxygen evolution reaction (OER), a strategy of anode selection was proposed to stabilize deeply oxidized states ( *O and *OOH) which contribute to the generation of 'OH. Through the use of MIL-101(Cr)-coated-Ti/TiO2 anodes, fast and complete removal of aniline and phenol, as well as improved energy utilization, were achieved compared to undecorated anodes. Mechanistic investigations and density functional theory (DFT) computations further supported the hypothesis and provided insights for the development of anode materials in the EO process.
CHINESE CHEMICAL LETTERS
(2023)
Article
Environmental Sciences
Chao Gao, Zhonglong Yin, Zifan Liu, Zepeng Zhang, Zhen Yang, Weiben Yang
Summary: Metal- and metal oxide-modified biochars were used to remove ammonia efficiently. The metal modification and formation of metal oxides increased the specific surface area of the adsorbent, enhancing its adsorption capacity. The experimental results showed that the modified biochar had a high removal rate for ammonia and maintained good removal efficiency in a mixed gas environment.
WATER AIR AND SOIL POLLUTION
(2022)
Article
Engineering, Environmental
Zhangzheng Wang, Yunyun Li, Min Hu, Tao Lei, Ziqi Tian, Weiben Yang, Zhen Yang, Nigel J. D. Graham
Summary: This study evaluated the flocculation performance of sequentially dosing alum and hydrophobically modified chitosan (alum+HC) for pharmaceutical removal in different water sources. The characteristics of dissolved organic matter (DOM) were found to influence the efficacy of HC in removing pharmaceutical compounds. The study demonstrated the enhanced performance of alum+HC in removing pharmaceuticals and highlighted the importance of hydrophobicity and functional group composition of DOM in pharmaceutical removal.
Article
Nanoscience & Nanotechnology
Zifan Liu, Zhonglong Yin, Zepeng Zhang, Chao Gao, Zhen Yang, Weiben Yang
Summary: In this study, three-dimensional hierarchical NiLa-LDH/BC was used for the highly efficient removal of N-nitrosamine precursors DMA and DEA from water. The material exhibited high adsorption capacity, stability, and low toxicity, and the removal mechanism involved electrostatic attraction, hydrogen bonding, and complexation.
ACS APPLIED NANO MATERIALS
(2022)
Article
Engineering, Environmental
Boqiang Gao, Koukou Tao, Zhonghua Xi, Mayyada M. H. El-Sayed, Tamer Shoeib, Hu Yang
Summary: In this study, a novel 3D lignosulfonate composited PVF sponge impregnated by BiVO4/PANI/Ag ternary photocatalyst was fabricated and showed excellent performance in the adsorption and photodegradation of fluoroquinolones antibiotics. BiVO4/PANI/Ag was well-dispersed and tightly bound to the composited sponge, which efficiently degraded the adsorbed antibiotics through surface photodegradation. The photocatalyst achieved high removal efficiency for all examined antibiotics and maintained a steady performance in continuous dynamic treatment.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Multidisciplinary
Jin JiaSheng, Xia Wei, Hu Pan, Yang Hu
Summary: In this study, a series of composite coagulants (atp-st-CTA) composed of a cationic starch (st-CTA) and attapulgite (ATP) were fabricated to effectively coagulate kaolin and Chlorella suspensions. The coagulation mechanisms of atp-st-CTA were investigated and it was found that the complete charge neutralization due to st-CTA and the enhanced sedimentation by ATP synergistically removed turbidity and algae from the water efficiently. This talented material has great potential in water treatment applications due to its advantages of environmental friendliness, low cost, and high efficiency.
SCIENCE CHINA-TECHNOLOGICAL SCIENCES
(2022)
Article
Environmental Sciences
Pan Hu, Kexin Su, Yibei Sun, Pengwei Li, Jun Cai, Hu Yang
Summary: This study systematically investigated the performance and mechanisms of using an etherified starch-based coagulant assisted by polysilicic acid for the coagulation of nano- and micro-sized plastic particles. The enhanced coagulation technique showed high efficiency in removing plastic particles from water and can be used in various water sources.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Yunyun Li, Yadong Wang, Jin Jin, Ziqi Tian, Weiben Yang, Nigel J. D. Graham, Zhen Yang
Summary: This study evaluated the performance of a new type of water flocculant in removing four different pesticides from Yangtze River water and mitigating membrane fouling. The results showed that the water flocculant had efficient pesticide removal capabilities and reduced membrane fouling, outperforming traditional inorganic coagulants.
Article
Multidisciplinary Sciences
Shaohang Shen, Hua Wei, Yu Pan, Pan Hu, Hu Yang
Summary: Coagulation/flocculation is an effective method for improving sludge dewaterability. This study used a cationic modified starch-based flocculant (St-CTA) and attapulgite (ATP) to condition waste-activated sludge. The dewatering properties were measured and compared by varying the doses of St-CTA and ATP. The results showed that the combination of St-CTA and ATP could enhance the dewaterability of sludge and reduce the water content in the final sludge cake to below 80%.
SCIENTIFIC REPORTS
(2023)
Article
Engineering, Environmental
Na Li, Koukou Tao, Wei Xia, Chunwei Yu, Hu Yang
Summary: A novel organic-inorganic ternary hybrid aerogel, LN/MMT@cellulose, was designed and fabricated for the adsorptive removal of ciprofloxacin in water. LN/MMT@cellulose exhibited good adsorption ability towards ciprofloxacin at low concentrations, even in various water sources. The composite aerogel showed promising potential for the adsorptive removal of antibiotics in water treatment.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Wei Zhu, Ruoding Wang, Qiong Tang, Zepeng Zhang, Zhonglong Yin, Zhen Yang, Weiben Yang
Summary: Metal organic framework (MOF)-based adsorbents have shown great potential in removing low-concentration phosphates with interfering ions in wastewater purification. In this study, ZIF-67/D-201 nanocomposites were developed, which exhibited high removal rate and adsorption capacity for low-concentration phosphates even in the presence of interfering ions. The structure of ZIF-67/D-201 was well preserved after multiple regenerations, making it suitable for fixed-bed adsorption runs.
Article
Engineering, Environmental
Zhangzheng Wang, Ruhui Chen, Yunyun Li, Weiben Yang, Ziqi Tian, Nigel J. D. Graham, Zhen Yang
Summary: This study proposes an innovative approach of using elevated membrane cleaning temperature to reduce membrane fouling in the water treatment process. By increasing the temperature, residual hydrophobic-modified chitosan flocculant (TRC) can be induced to reduce membrane fouling in ultrafiltration.
Article
Chemistry, Multidisciplinary
Jehan Abdel Salam, Amina A. Saleh, Toqa Taha El Nenaiey, Hu Yang, Tamer Shoeib, Mayyada M. H. El-Sayed
Summary: The study investigates the potential use of cape gooseberry husk as a biosorbent for removing pharmaceutical contaminants from water. The activated husk showed increased surface area, pore volume, and adsorption efficiency. It can be regenerated and reused for multiple cycles.
Article
Engineering, Environmental
Wei Xia, Yuyang Wang, Shaohang Shen, Hu Yang
Summary: Harmful algal blooms (HABs) in freshwater lakes and coastal water can be mitigated using a novel actinia-shaped composite coagulant (ATP@CS) comprised of cationic starch (CS) and attapulgite (ATP). The ATP@CS demonstrated superior performance in harvesting Microcystis aeruginosa with a maximum efficiency of over 98.0%. The presence of ATP in the coagulant improved settlement properties and larger, compact, durable, and rapidly regrown flocs were formed. ATP@CS has the potential to be an efficient and environmentally friendly coagulant for HAB removal, with enhanced settlement property, high ecological safety, notable HAB removal efficiency, low cost, and environment friendliness.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Chemical
Pan Hu, Yibei Sun, Pengwei Li, Wenxiao Ren, Jiachun Ren, Kexin Su, Jun Cai, Mayyada M. H. El-Sayed, Tamer Shoeib, Hu Yang
Summary: In this study, four starch-based coagulants were designed and fabricated, and their efficiency in removing nano-sized plastics from water was evaluated. The results showed that graft and partially hydrophobic starch-based coagulants exhibited better removal efficiency and produced more durable flocs compared to linear and hydrophilic coagulants. The findings highlight the importance of chain architecture and hydrophilicity in the design and selection of polymeric coagulants for efficient water treatment.
SEPARATION AND PURIFICATION TECHNOLOGY
(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.