Article
Environmental Sciences
Chin Seng Liew, Ratchaprapa Raksasat, Hemamalini Rawindran, Worapon Kiatkittipong, Jun Wei Lim, Wai Hong Leong, Man Kee Lam, Mardawani Mohamad, Yoke Wang Cheng, Chi Cheng Chong
Summary: This study developed a comprehensive functional model to describe the kinetics of sludge hydrolysis under low temperature thermal pre-treatment conditions. The results showed that treatment temperature had a greater impact on solubilizing waste activated sludge (WAS) compared to treatment duration. The model had a good fit and could predict the kinetics of sludge hydrolysis under arbitrary treatment conditions.
Article
Agricultural Engineering
Min Zhang, Yuwei Yang, Huaqian Mou, Aodong Pan, Xiaomei Su, Jianrong Chen, Hongjun Lin, Faqian Sun
Summary: This study investigates a new approach to improve the anaerobic digestion of waste activated sludge (WAS) by combining fungal mash and free nitrous acid (FNA) pretreatment. The fungal strain Aspergillus PAD-2, which secretes superior hydrolase, was isolated from WAS and cultured in-situ on food waste to produce fungal mash. The solubilization of WAS by fungal mash achieved a high release rate of soluble chemical oxygen demand, and the combined pretreatment of fungal mash and FNA further enhanced sludge solubilization and methane production.
BIORESOURCE TECHNOLOGY
(2023)
Article
Environmental Sciences
Huan Liu, Xuan Li, Zehao Zhang, Long D. Nghiem, Qilin Wang
Summary: Urine pretreatment is an effective strategy to improve methane production in anaerobic digestion of waste activated sludge, with significant increases in methane production, degradation extent, and hydrolysis rate.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Agricultural Engineering
Shinjini Paul Choudhury, Sugato Panda, Izharul Haq, Ajay S. Kalamdhad
Summary: Optimization of Pseudomonas putida 7525 strain dosage for petroleum refinery sludge pretreatment showed significant increases in soluble chemical oxygen demand and volatile fatty acids production within 6 days. The best inoculum and pretreated substrate ratio of 0.5 resulted in a 62% methane increase and 66.7% volatile solids degradation.
BIORESOURCE TECHNOLOGY
(2022)
Article
Agricultural Engineering
Yufen Wang, Kaixin Zheng, Haixiao Guo, Yindong Tong, Tingting Zhu, Yiwen Liu
Summary: This study revealed that vivianite significantly inhibits anaerobic digestion of waste activated sludge, leading to a decrease in methane yield, an increase in substrate remaining, and an impact on microbial communities.
BIORESOURCE TECHNOLOGY
(2022)
Article
Agricultural Engineering
Ayesha Maryam, Zeshan, Malik Badshah, Mariam Sabeeh, Sher Jamal Khan
Summary: Anaerobic digestion of waste activated sludge can be significantly improved by alkaline, photocatalytic, and alkaline-photocatalytic pretreatments, resulting in increased methane production compared to untreated sludge.
BIORESOURCE TECHNOLOGY
(2021)
Article
Agricultural Engineering
Mengyu Yin, Hongbo Chen
Summary: Chitosan plays a positive role in anaerobic digestion of waste activated sludge, enhancing methane production potential and promoting sludge agglomeration through various mechanisms, ultimately contributing to the gasification process.
BIORESOURCE TECHNOLOGY
(2022)
Article
Green & Sustainable Science & Technology
Yuqi Wu, Kang Song
Summary: The study on anaerobic co-digestion of waste activated sludge and fish waste showed that adding 1.5% and 3% of fish waste could enhance methane production, while adding more than 6% inhibited methane production severely. Microbial community analysis revealed dominance of hydrogenotrophic and methylotrophic methanogenesis pathways during anaerobic co-digestion.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Environmental Sciences
Feixiang Zan, Hao Huang, Gang Guo, Guanghao Chen
Summary: The study found that sulfite pretreatments can enhance the biodegradability of sludge mixtures and improve substrate release. Additionally, methane production from the sludge mixture increased, while the volume of digested sludge decreased after sulfite pretreatment.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Environmental
Mingting Du, Xuran Liu, Dongbo Wang, Qi Yang, Abing Duan, Hong Chen, Yiwen Liu, Qilin Wang, Bing-Jie Ni
Summary: This study delves into the degradation of capsaicin in anaerobic co-digestion, revealing that capsaicin inhibits methane production and affects the activity of anaerobic microbes, particularly impacting hydrolysis, acidogenesis, and methanogenesis.
Article
Agricultural Engineering
Cong-Cong Tang, Bao-Cai Zhang, Xing-Ye Yao, Ai-Juan Zhou, Wenzong Liu, Yong-Xiang Ren, Zhihua Li, Aijie Wang, Zhang-Wei He
Summary: This study investigated the response mechanisms of anaerobic digestion of waste activated sludge to different particle sizes of zeolite. It was found that zeolite with a particle size of 0.2-0.5 mm and an additive dosage of 0.1 g/g VSS increased methane production by 22.08% compared to the control. Mechanism study revealed that zeolite improved the hydrolysis, acidification, and methanogenesis stages, leading to the enhanced consumption of soluble polysaccharides and proteins, increased accumulation of short-chain fatty acids, optimized composition of short-chain fatty acids, increased activity of F420, and promoted syntrophic metabolism between bacteria and methanogens.
BIORESOURCE TECHNOLOGY
(2023)
Review
Agricultural Engineering
Xue-Ting Wang, Yi-Feng Zhang, Bo Wang, Song Wang, Xue Xing, Xi-Jun Xu, Wen-Zong Liu, Nan-Qi Ren, Duu-Jong Lee, Chuan Chen
Summary: Hybrid microbial electrolysis cells-anaerobic digestion (MEC-AD) has been proven to increase methane productivity and methane yield of waste activated sludge (WAS) by establishing direct interspecies electron transfer method and enriching functional microorganisms. This review summarized the pretreatment methods of WAS for MEC-AD and discussed the reactor configurations, operation parameters, and economic benefit of MECAD. The enhancement mechanisms of MEC-AD were also reviewed based on the analysis of thermodynamics and microbial community.
BIORESOURCE TECHNOLOGY
(2022)
Article
Green & Sustainable Science & Technology
Phuong Linh Ngo, Brent R. Young, Kevan Brian, Saeid Baroutian
Summary: In this study, the pre-treatment of mixed sludge using thermal hydrolysis was investigated. It was found that the condition of thermal hydrolysis at 145 degrees C for 30 min provided the highest biogas production, without increasing the concentration of free ammonia. This condition also resulted in the highest amount of acetic acid and the lowest level of propionic acid, making it the most suitable condition for anaerobic digestion.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Environmental Sciences
Zhiren Cao, Xiaoding Huang, You Wu, Dongbo Wang, Wenjie Du, Jiamin Zhang, Qi Yang, Zhe Kuang, Zhuo Chen, Xiaoming Li
Summary: This study investigated the effect of AHTN on waste activated sludge anaerobic digestion, finding that AHTN can enhance methane production up to a certain concentration, but decrease it when reaching a certain threshold. Additionally, AHTN can facilitate the utilization of volatile fatty acids, with a degradation efficiency of 42.7%. Mechanism investigation showed that AHTN can promote solubilization, fermentation, and methanogenesis processes, leading to increased methane production.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Green & Sustainable Science & Technology
Sadiye Kosar, Onur Isik, Yasemin Akdag, Hazal Gulhan, Ismail Koyuncu, Hale Ozgun, Mustafa Evren Ersahin
Summary: Characteristics of seed sludge are crucial for the granulation and treatment performance of aerobic granular sludge process. Different types of seed sludge can affect the size of granules and the efficiency of nitrogen and phosphorus removal in the sludge.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Chemistry, Applied
Sadra Souzanchi, Laleh Nazari, Kasanneni Tirumala Venkateswara Rao, Zhongshun Yuan, Zhongchao Tan, Chunbao (Charles) Xu
Summary: This study demonstrated the use of industrial-grade sugar syrups derived from corn and wood as cost-effective and competitive feedstocks for 5-HMF production. The catalyst used showed stability and could be regenerated in-situ, although it resulted in slightly lower glucose conversion and reduced 5-HMF yield compared to the fresh catalyst. The humins produced during the reaction exhibited high aromaticity and contained a high degree of unsaturated compounds.
Article
Engineering, Chemical
Rosa Arredondo, Zhongshun Yuan, Dennise Sosa, Anthony Johnson, Ramon Filipe Beims, Hongwei Li, Qiang Wei, Chunbao Charles Xu
Summary: Superabsorbent polymers (SAPs) have high water absorbability and are widely used in agriculture. However, bio-based SAPs, which are environmentally friendly, have drawbacks such as time-consuming synthesis and low absorption capacity. In this study, a novel cellulose-based SAP was developed through modified cellulose, which exhibited superior absorbency, thermal stability, pH stability, and biodegradability compared to commercial fossil-based SAPs. This indicates that Cellulo-SAP can be an effective alternative in agriculture.
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Biotechnology & Applied Microbiology
Hongwei Li, Zohaib Ali, Zhongshun Yuan, Yulin Hu, Qin Wei, Chunbao Charles Xu
Summary: Agricultural waste, specifically liquefied wheat straw, was used to prepare bio-based hydroponic polyurethane (BHPU) foams. The optimized foam formula exhibited potential as a plant growth medium.
BIOFUELS BIOPRODUCTS & BIOREFINING-BIOFPR
(2023)
Article
Engineering, Environmental
Ramon Filipe Beims, Amin Rizkalla, Azadeh Kermanshahi-pour, Chunbao Charles Xu
Summary: A reengineering approach is used to develop a high-strength and lightweight bio-composite material by fractionating natural wood into delignified wood (DW) and lignin, synthesizing a lignin-based epoxy resin (LER), and composting DW and LER. The newly developed wood-based composite exhibits improved hydrophobicity, antioxidation, thermal stability, and extraordinary mechanical properties surpassing many metal alloys.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Gabriel Capson-Tojo, Damien J. Batstone, Tim Hulsen
Summary: This work presents an extended Photo-Anaerobic Model (ePAnM) that considers the metabolic capabilities of purple phototrophic bacteria (PPB), microbial clades interacting with PPB, and varying environmental conditions. The model was calibrated and validated using different datasets and was able to predict key compound concentrations and microbial communities.
Article
Engineering, Environmental
Felix Egger, Tim Hulsen, Damien J. Batstone
Summary: Anaerobic digestion produces biogas that requires desulfurization before use due to its corrosive nature. A continuous desulfurization process using purple phototrophic bacteria, powered by light, was developed as an alternative to traditional methods. This caustic-free process can integrate with anaerobic digestion using centrate as a nutrient source, but may be limited by the availability of light for nighttime operation in a scaled process.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Metallurgy & Metallurgical Engineering
Yang Xue, Xiaoming Liu, Na Zhang, Song Guo, Zhiqing Xie, Chunbao Xu Charles
Summary: This study proposes an oxygen pressure leaching method for selectively leaching zinc from converter dust (CD). The method effectively promotes the decomposition of ZnFe2O4 to increase zinc recovery and skillfully oxidizes and hydrolyzes Fe2+ in the solution to solid Fe(OH)SO4. Under optimal conditions, the leaching efficiency of zinc reached 98.8%, and 86.3% of iron remained in the leach residue, achieving the one-step separation of zinc and iron. Additionally, the leach residue was successfully used to synthesize a magnetically recyclable iron oxides@HTCC composite photocatalyst.
Article
Engineering, Environmental
Yifan Wang, Tao Yang, Long Ding, Rufei Wei, Lixin Qian, Hongming Long, Chunbao Charles Xu
Summary: The key to solving the ecological hazards caused by semi-dry sintering flue gas desulfurization ash lies in the realization of low-temperature and high-efficiency oxidation of CaSO3. Subcritical hydrothermal technology was used to oxidize CaSO3, achieving an oxidation rate of 89.83% at 180 degrees C, 2 MPa for 120 min with a solid-to-liquid ratio of 1:20. The macroscopic oxidation kinetics of CaSO3 in the subcritical hydrothermal reaction system were investigated, and a mathematical model incorporating various factors was established. The subcritical hydrothermal technology not only improves efficiency but also enables the one-step preparation of CaSO4 whiskers, facilitating cost-effective and high-value resource utilization of semi-dry FGD ash.
Article
Engineering, Chemical
Aristide Laurel Mokale Kognou, Chonlong Chio, Janak Raj Khatiwada, Sarita Shrestha, Xuantong Chen, Hongwei Li, Yuen Zhu, Zi-Hua Jiang, Chunbao (Charles) Xu, Wensheng Qin
Summary: This study isolated various bacteria with the potential to produce glucose isomerase from soil samples, and optimized the enzyme production using response surface methodology. The isolates showed maximum enzyme activity at optimal fermentation conditions, promoting wheat straw as feedstock for the bio-based industry.
GREEN CHEMICAL ENGINEERING
(2023)
Article
Agricultural Engineering
Mingyuan Zhang, Haoyu Wang, Xue Han, Yimin Zeng, Chunbao Charles Xu
Summary: The study investigated the performance of different carbon-supported CoMoP and CoMoW catalysts in catalytic hydrodeoxygenation (HDO) of pyrolysis oil using formic acid as an in-situ hydrogen source in supercritical ethanol. Among them, the CoMoP catalyst supported on ASC-Zn and the CoMoW catalyst supported on MWNTs showed the best HDO performance, achieving higher oil yield, lower oxygen contents, and higher degree of deoxygenation (DOD) at both 300℃ and 350℃ for 2 hours. However, stability tests revealed slight deactivation of both catalysts, possibly due to leaching of active metals or coke/carbon deposition on active sites.
BIOMASS & BIOENERGY
(2023)
Review
Chemistry, Physical
Armin Rezayan, Yongsheng Zhang, Baojun Li, Chunbao Charles Xu
Summary: This review examines the potential of converting cellulose into valuable 5-hydroxymethylfurfural (HMF) for sustainable chemical production. Catalyst types, hydrolysis strategies, and reactor systems are explored for their contributions to improving cellulose-to-HMF conversion. The review also covers challenges, future perspectives, and development directions.
Article
Chemistry, Physical
Xiaomeng Yang, Yajiao Cui, Yingyu Qi, Luyan Fu, Armin Rezayan, Chunbao Charles Xu, Jianshe Wang, Dong Sui, Yongsheng Zhang
Summary: In this work, NiO nanoparticles supported on activated carbon nanofibers (NiO/ACNFs) were synthesized by atomic layer deposition technique and used directly as self-supporting binder-free electrodes for supercapacitors. The NiO/ACNFs electrodes showed high specific capacitance and good rate capability. The excellent electrochemical capacitance performance of NiO/ACNFs can be attributed to the high conductivity and large specific surface area of ACNFs, as well as the high capacity, small size, and even dispersion of NiO.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Environmental
Tao Shui, An Li, Michael Chae, Chunbao Charles Xu, David C. Bressler
Summary: Strict bans are in place to prevent the spread of BSE by isolating and disposing of specific risk materials (SRMs) from cattle. However, these bans result in significant costs for rendering companies and environmental burdens. This review focuses on the valorization progress achieved in the conversion of SRM-derived peptides via thermal hydrolysis, introducing potential applications in various industries.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Green & Sustainable Science & Technology
Haoyu Wang, Xue Han, Yimin Zeng, Chunbao Charles Xu
Summary: This study developed a global kinetic model for predicting product yields from hydrothermal liquefaction (HTL) of lignocellulosic biomass based on its chemical compositions. HTL experiments were conducted with biomass model compounds and lignocellulosic biomass at various temperatures and reaction times. Lignin was found to be the main contributor to bio-oil formation. A universal reaction network and a kinetic model were proposed and validated with experimental results and literature data.
Review
Environmental Sciences
Mian Hu, Jiajia Ma, Zhuoran Jiang, Junliang Wang, Zhiyan Pan, Zhong-Ting Hu, Suqin Tang, Ramon Beims, Chunbao Xu (Charles)
Summary: Investigating ways to control the generation of deleterious gas-N species and convert them into valuable N-containing products in sewage sludge (SS) pyrolysis is crucial for SS management. This review focuses on the nitrogen migration and transformation (NMT) mechanisms during the pyrolysis process, analyzing factors such as temperature, minerals, atmosphere, and heating rate that influence NMT in char, gas, and liquid products. Strategies for N control in SS pyrolysis products are proposed for environmental and economic sustainability, with a focus on value-added liquid-N and char-N products and reducing NOx emissions.
SCIENCE OF THE TOTAL ENVIRONMENT
(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.
