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Effect of CeO_(2) Nanoparticles on the Spread of Antibiotic Resistance in a Reclaimed water-Soil-Radish System-Shenzhen City,Guangdong Province,China,April 2023

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China CDC weekly 2023年第46期5卷 1029-1037,I0005-I0007页

作者： Kaiqiang Yu Bixi Zhao Yuxi Yan Qing Yang Liming Chen Yu Xia School of Environmental Science and Engineering College of EngineeringSouthern University of Science and TechnologyShenzhen CityGuangdong ProvinceChina School of Resource Environment and Life ScienceNingxia Normal UniversityGuyuan CityGansu ProvinceChina State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control School of Environmental Science and EngineeringSouthern University of Science and TechnologyShenzhen CityGuangdong ProvinceChina Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control School of Environmental Science and EngineeringSouthern University of Science and TechnologyShenzhen CityGuangdong ProvinceChina

ABSTRACT Introduction:The use of reclaimed water(RW)for irrigation in agricultural practices raises concerns regarding the dissemination of antibiotic resistance genes(ARGs)from soils to edible *** effectiveness of na... 详细信息

关键词： Antibiotic Guangdong claimed

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Unveiling carbon dynamics in year-round waterlogged pond fields: insights into soil organic carbon accumulation and sustainable management

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Carbon Research 2025年第1期4卷 1-12页

作者： Xiao, Liang Chen, Sijie Han, Fengxiang Wang, Tao Li, Yueshi Li, Wenhan Yuan, Guodong Wu, Jinghua Guangdong Provincial Key Laboratory of Eco-Environmental Studies and Low-Carbon Agriculture in Peri-Urban Areas Guangdong Technology and Equipment Research Center for Soil and Water Pollution Control Zhaoqing University Zhaoqing526061 China Department of Chemistry Physics and Atmospheric Sciences Jackson State University JacksonMS39217 United States Key Laboratory of Mountain Surface Processes and Ecological Regulation Institute of Mountain Hazards and Environment Chinese Academy of Sciences Chengdu610041 China

Agri-ecosystems with flooded fields are pivotal in global carbon (C) dynamics. Although extensive research has focused on carbon sequestration in paddy fields, year-round waterlogged pond fields remain underexplored. This study investigates carbon dynamics in pond fields planted with Semen Euryales for 0, 24, and 60 years, examining soil organic carbon (SOC) accumulation and shifts in its composition. The results revealed a progressive increase in SOC, driven by particulate organic C (POC) and mineral-associated organic (MAOC). SOC increased significantly from 7.49 g kg–1 to 46.10 g kg–1 over the 60 years, with particulate organic carbon (POC) rising from 12.0% to 42.0% and mineral-associated organic carbon (MAOC) decreasing from 87.8% to 58.0%. Lignin phenols, reflecting plant-derived carbon, surged from 11.0% to 68.8%, while amino sugars, indicative of microbial residues, declined from 89.0% to 31.2%, suggesting reduced microbial activity under prolonged anaerobic conditions. Total microbial phospholipid fatty acid (PLFA) decreased by 40.6% and 43.8% after 24 and 60 years, respectively, further supporting the conclusion that anaerobic conditions limit microbial survival. The prolonged waterlogging reduced microbial decomposition, enhancing the accumulation of POC, particularly from plant-derived carbon such as Semen Euryales residues. The accumulation of microbial residues, especially fungal necromass, played a significant role in forming MAOC. That is, continuous waterlogging promoted POC accumulation and also contributed to MAOC stabilization. The findings provide valuable insights into sustainable carbon management practices in pond fields and contribute to climate change mitigation. © The Author(s) 2025.

关键词： Carbon sequestration

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Macleaya cordata extract exhibits some potential as a surrogate antibiotic by improving gastrointestinal epithelial status and humoral response in goats

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Animal Nutrition 2024年第3期18卷 356-366页

作者： Qiongxian Yan Xilin Li Xiaoling Zhou Wenxun Chen Xingzhou Tian Suntorn Wittayakun Pramote Paengkoum Zhiliang Tan Chinese Academy of Sciences Key Laboratory of Agro-Ecological Processes in Subtropical Region National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry ProductionHunan Provincial Key Laboratory of Animal Nutrition&Physiology and MetabolismInstitute of Subtropical AgricultureThe Chinese Academy of SciencesChangsha 410125China College of Animal Science Tarim UniversityAlaer 843300China Key Laboratory of Animal Genetics Breeding and Reproduction in the Plateau Mountainous RegionMinistry of EducationCollege of Animal ScienceGuizhou UniversityGuiyang 550025China Faculty of Science and Agricultural Technology Rajamangala University of Technology LannaLampang 52000Thailand School of Animal Technology and Innovation Institute of Agricultural TechnologySuranaree University of TechnologyNakhon Ratchasima 30000Thailand

Macleaya cordata extract(MCE)is a potential replacement for *** the current study,effects of MCE on the gastrointestinal health and humoral responses of host animals were explored.A total of 30 weanling goats with similar body weight of 9.15±1.36 kg were randomly allocated into three groups(n=10 per group):control group(CON group,fed with a basal diet),antibiotic group(Abx group,fed with the basal diet supplemented with 0.18 g/d vancomycin and 0.36 g/d neomycin),and MCE group(fed with the basal diet supplemented with 5 g/d MCE),for three *** showed that antibiotic addition decreased the height and area of rumen papillae,ruminal mucosa Toll-like receptor 8(TLR8),interleukin-8(IL-8)and interleukin-1β(IL-1β)gene relative expression levels and microbial diversity,altered the volatile fatty acid(VFA)profile in the rumen,and increased monocytes amount and CD4^(+)T cells percentage in the peripheral blood(P<0.05)compared to CON *** addition increased the average daily gain,ileal villus height,villus height/crypt depth,and immunoglobulin M(IgM)content in the peripheral blood(P<0.05)compared to the ***,MCE addition decreased the proportion of isobutyric acid in the chyme of the ileum(P=0.005)compared to the CON *** results suggest that antibiotic supplementation may suppress the epithelial state and microbial diversity and fermentation in goats,but stimulate cellular response to maintain the growth performance of *** administration improved the epithelial state and humoral response to promote the growth performance in goats.

关键词： Macleaya cordata extract Substitution of antibiotics Humoral immunity Gastrointestinal health Bacterial community Branch-chain fatty acid

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Removal of ciprofloxacin by biosulfurized nano zero-valent iron (BP–S-nZVI) activated peroxomonosulfate: Influencing factors and degradation mechanism

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Chemosphere 2024年 362卷 142557页

作者： Peng, Zheng Xi, Yanni Zhang, Zhuang Su, Zhu Xu, Weihua Zhang, Chang Li, Xin College of Environmental Science and Engineering Hunan University ChangSha410082 China Ministry of Education Changsha410082 China Hunan Provincial Key Laboratory of Water Pollution Control Technology Hunan Research Academy of Environmental Sciences Changsha410014 China

Agglomeration and passivation restrict the using zero-valent iron nanoparticles (nZVI). Enhancing the reactivity of nZVI is often accomplished by sulfurization. In this work, nZVI was sulfurized using SRB to produce biosulfurized nano zero-valent iron (BP–S-nZVI), which was then utilized as a catalyst to investigating its performance in an advanced oxidation process based on activated peroxomonosulfate (PMS). When the S/Fe was 0.05, 0.4 g/L of catalyst and 0.5 mM PMS were added to a 20 mg/L ciprofloxacin solution. In 120 min, a 90.4% clearance rate was reached. When the initial pH of the solution was within the range of 3–11, all exhibited acceptable degradation performance and were minimally affected by co-existing anions. In this activation system, hydroxyl, superoxide and sulfate radicals (•OH, O2•− and SO4•−, respectively) have been proven to be the main active species. Seven intermediates in the degradation process of CIP were identified by LC-MS analysis and two possible degradation pathways were proposed. In addition, the degradation rate of CIP was still able to reach 87.0% after five cycles, and the removal rate remained unchanged in the CIP solution with actual water samples as background. This study demonstrated that BP-S-nZVI as a catalyst for the activation of PMS for CIP degradation can still show good reactivity, which provides more possibilities for the practical application of BP-S-nZVI in the degradation of pollutants. © 2024 Elsevier Ltd

关键词： Degradation

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Rational design of a bismuth oxyiodide(Bi/BiO_(1-x)I)catalyst for synergistic photothermal and photocatalytic inactivation of pathogenic bacteria in water

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Journal of Materials Science & technology 2022年第5期100卷 110-119页

作者： Huinan Zhao Xinyi Guan Feng Zhang Yajing Huang Dehua Xia Lingling Hu Xiaoyuan Ji Ran Yin Chun He School of Environmental Science and Engineering Sun Yat-sen UniversityGuangzhou 510275China Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology Guangzhou 510275China Department of Civil and Environmental Engineering The Hong Kong University of Science and TechnologyClear Water BayHong Kong SARChina

In this study,bismuth oxyiodide with coexistence of plasmonic Bi and oxygen vacancy(Bi/BiO_(1-x)I)was successfully prepared and used towards photothermal and photocatalytic disinfection of pathogenic bacteria containing *** Bi and oxygen vacancies in Bi/BiO_(1-x)I induced a surface plasmon effect under the irradiation of simulated solar light from 500-900 nm and promoted the generation of hot electrons and reactive species(^(1)O^(2),h^(+)and·O_(2)^(-)).The catalyst showed promising performance for inactivation of *** K-12,with a 7.2 log inactivated achieved under the optimum conditions.A synergy between photothermal and photocatalytic inactivation was identified and *** mechanisms of *** K-12 destruction were *** destruction of extracellular antioxidant enzymes of *** K-12 was identified after ***,the ***'s membrane and its intracellular contents were attacked by the reactive species(^(1)O^(2),h^(+)and·O_(2)^(-))and the thermal *** work provides useful insights into the rational design of semimetal bismuth-mediated photocatalysts towards effective and sustainable water disinfection.

关键词： Photothermocatalysis Semimetal Bi Disinfection Oxygen vacancy Solar light

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Activation of sulfite by ferric ion for the degradation of 2,4,6-tribromophenol with the addition of sulfite in batches

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Chinese Chemical Letters 2022年第11期33卷 4766-4770页

作者： Zongping Wang Fan Bai Lisan Cao Siyang Yue Jingwen Wang Songlin Wang Jun Ma Pengchao Xie School of Environmental Science and Engineering Key Laboratory of Water&Wastewater Treatment(MOHURD)Hubei Provincial Engineering Research Center for Water Quality Safety and Pollution ControlHuazhong University of Science and TechnologyWuhan 430074China School of Architecture&Urban Planning Huazhong University of Science and TechnologyWuhan 430074China State Key Laboratory of Urban Water Resource and Environment Harbin Institute of TechnologyHarbin 150090China

In this work,the removal of 2,4,6-tribromophenol(TBP)by ferric ion-activated sulfite[Fe(Ⅲ)/S(Ⅳ)]process was systematically investigated with determining the intermediate products and evaluating the influences of some operational conditions and water *** results show that batching addition of S(Ⅳ)benefits the S(Ⅳ)utilization efficiency and TBP removal,with SO_(4)^(-)being the primary reactive radical accounting for TBA *** maximum TBP removal in the Fe(Ⅲ)/S(Ⅳ)process was observed at pH 4.0 and oxygen is essential in this *** increasing Fe(Ⅲ)and S(Ⅳ)dosages from 0.05 and 0.1 mmol/L to 0.2 and 2.0 mmol/L,respectively,TBP removal followed trends of first increase then *** the acute toxicity of the TBP solution was significantly reduced,the Fe(Ⅲ)/S(Ⅳ)process was believed to be a good choice in the treatment of TBP.

关键词： Fe(Ⅲ)/S(Ⅳ) 2,4,6-Tribromophenol(TBP) Sulfate radical(SO_(4)^(·–)) Batches Acute toxicity

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Mechanism of iron on the intestinal epithelium development in suckling piglets

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Science China(Life Sciences) 2023年第9期66卷 2070-2085页

作者： Lanmei Yin Yitong Zhang Jun Li Jing Zhou Qiye Wang Jing Huang Jianzhong Li Huansheng Yang Hunan International Joint Laboratory of Animal Intestinal Ecology and Health Laboratory of Animal Nutrition and Human HealthCollege of Life SciencesHunan Normal UniversityChangsha 410081China Key Laboratory of Agro-ecological Processes in Subtropical Region Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic ProcessNational Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry ProductionInstitute of Subtropical AgricultureChinese Academy of SciencesChangsha 410125China Tianjin Institute of Industrial Biotechnology Chinese Academy of SciencesTianjin 300308China State Key Laboratory of Food Safety Technology for Meat Products Yinxiang GroupFujian Aonong BiologicaI Science and Technology Group Co.Ltd.Key Laboratory of Swine Nutrition and Feed Science of Fujian ProvinceZhangzhou 363000China

This study aimed to investigate the mechanism of iron on intestinal epithelium development of suckling piglets. Compared with newborn piglets, 7-day-old and 21-day-old piglets showed changes in the morphology of the jejunum, increased proliferation,differentiated epithelial cells, and expanded enteroids. Intestinal epithelium maturation markers and iron metabolism genes were significantly changed. These results suggest that lactation is a critical stage in intestinal epithelial development, accompanied by changes in iron metabolism. In addition, deferoxamine(DFO) treatment inhibited the activity of intestinal organoids at passage 4(P4) of 0-day-old piglets, but no significant difference was observed in epithelial maturation markers at passage 1(P1) and P4,and only argininosuccinate synthetase 1(Ass1) and β-galactosidase(Gleb) were up-regulated at passage 7(P7). These results in vitro show that iron deficiency may not directly affect intestinal epithelium development through intestinal stem cells(ISCs). The iron supplementation significantly down-regulated the m RNA expression of interleukin-22 receptor subunit alpha-2(IL-22RA2)in the jejunum of piglets. Furthermore, the m RNA expression of IL-22 in 7-day-old piglets was significantly higher than that in0-day-old piglets. Adult epithelial markers were significantly up-regulated in organoids treated with recombinant murine cytokine IL-22. Thus, IL-22 may play a key role in iron-affecting intestinal epithelium development.

关键词： iron suckling piglets intestinal epithelium development interleukin-22

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Simulation of the dynamic processes of microplastic suspension and deposition in a lake sediment–water system

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Environmental Science and pollution Research 2024年第29期31卷 41926-41938页

作者： Li, Bo Peng, Jinping Hong, Bin Li, Bowen Jia, Qunpo Wang, Yongyang Cai, Yanpeng Yang, Zhifeng Guangdong Basic Research Center of Excellence for Ecological Security and Green Development Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds School of Ecology Environment and Resources Guangdong University of Technology Guangzhou510006 China Chongqing Key Laboratory of Water Environment Evolution and Pollution Prevention and Control in Three Gorges Reservoir Area Chongqing Three Gorges University Chongqing404000 China School of Chemical Engineering and Light Industry Guangdong University of Technology Guangzhou510006 China South China Institute of Environmental Sciences Ministry of Environmental Protection Guangzhou510655 China

The occurrence of microplastics in aquatic environments has attracted increasing interest from both the public and scientists, especially their migration behaviors. Although several environmental behaviors of microplastics have been studied, the issue of microplastic suspension and deposition in lake sediment–water systems remains to be elucidated. In this study, we built an indoor sediment–water system with input and output rivers that simulated the actual situations in lakes, and aimed to explore the suspension and deposition behavior of microplastics using eight group experiments. The abundance of microplastics in overlying water and sediments in different periods was analyzed, and the characteristics of hydrodynamic disturbance on microplastic suspension and deposition were identified. Importantly, the exchange of microplastics in sediments and water under dynamic flow conditions was assessed. The results showed that the middle-scale experiment designed in this study effectively simulated the dynamic transport process of microplastics in lakes, and the hydrodynamic force had a significant impact on the suspension and deposition behaviors of microplastics. The average abundance of polystyrene, polyethylene terephthalate and polyamide microplastics was 1.07, 0.60 and 0.83 particles/L in overlying water during the suspension experiments, respectively. This showed a pattern of first rising and then falling with the extension of suspension time. Even in the environment with the maximum input water volume (8000 ml/min) in this study, only microplastics at a depth of 0 to 2 cm from the sediment were suspended. The average abundance of microplastics was 313.02 particles/kg during the deposition experiments, which gradually increased with the extension of deposition time in sediments. Finally, microplastic sizes in water of the suspension experiments and in sediments of the deposition experiments were concentrated in the range of 500 to 1500 μm and 300 to 1000 μm, respec

关键词： Lakes

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Mechanistic insights to sorptive removal of four sulfonamide antibiotics from water using magnetite-functionalized biochar

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Biochar 2023年第1期5卷 1377-1388页

作者： Shanshan Bai Yaolu Zhou Mingrong Qian Jun Xia Zhiqiang Sun Yujiao Wang Xiaochen Huang Shishu Zhu Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province Interdisciplinary Research AcademyZhejiang Shuren UniversityHangzhou 310015People’s Republic of China State Key Laboratory of Urban Water Resource and Environment School of EnvironmentHarbin Institute of TechnologyHarbin 150090People’s Republic of China State Key Lab of Biocontrol Guangdong Provincial Key Laboratory of Plant ResourcesSchool of AgricultureShenzhen Campus of Sun Yat-Sen UniversityShenzhen 518107People’s Republic of China The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters Ministry of EducationSchool of Environment and EnergySouth China University of TechnologyGuangzhou 510006People’s Republic of China

Magnetite-functionalized biochar(MBC)is a promising engineered material for remediation of antibiotic-contaminated ***,sorption mechanisms of ionizable organic compounds such as sulfonamide antibiotics(SAs)on MBC are still *** study employed four representative SAs including sulfamethazine(SMT),sulfamerazine(SMR),sulfadiazine(SDZ),and sulfamethoxazole(SMX),to compare the difference in sorption on *** showed that the sorption capacities and affinities of the four SAs varied with their substituents,hydrophobic properties,and dissociation constants(pKa).Synergistic effect during co-pyrolysis with Fe^(3+)enhanced the sorption performance of MBC towards SAs compared to original *** methods confirmed structural changes of MBC such as the variance in oxygen-containing groups and defective/graphitized *** of modeling pH-dependent sorption revealed that H-bonding orπ-bond assisted H-bonding determined the sorption affinities and capacities of *** particular,the SAs with lower pKa were thermodynamically favorable to form H-bonding with MBC via proton exchange with water *** calculation results quantified the contributions of H-bonding strengths and found that the energies of H-bonding were correlated with affinities of ***,contributions of oxygencontaining groups instead of minerals dominated the H-bonding *** insights from this study can be valuable in exploring engineered BC composites for practical application in field remediation.

关键词： Biochar Antibiotics Sorption capacity Synergistic effect Quantum calculation

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Glutamine,glutamate,and aspartate differently modulate energy homeostasis of small intestine under normal or low energy status in piglets

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Animal Nutrition 2022年第1期8卷 216-226页

作者： Jing Wang Nan Wang Ming Qi Jianjun Li Bie Tan College of Animal Science and Technology Hunan Agricultural UniversityChangsha 410128HunanChina Animal Nutrition and Human Health Laboratory Hunan Provincial Key Laboratory of Animal Intestinal Function and RegulationSchool of Life SciencesHunan Normal UniversityChangsha 410081HunanChina Laboratory of Animal Nutritional Physiology and Metabolic Process Key Laboratory of Agroecological Processes in Subtropical RegionNational Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry ProductionInstitute of Subtropical AgricultureChinese Academy of SciencesChangsha 410125HunanChina University of Chinese Academy of Sciences Beijing 10008China

Weaning stress may cause reduced energy intake for maintenance of mucosal ***,Glu,and Asp are major energy sources for the small *** study investigated whether Gln,Glu,and Asp improve the intestinal morphology via regulating the energy metabolism in weaning piglets.A total of 198 weaned piglets were assigned to 3 treatments:control(Basal diet+1.59%L-Ala);T1(Basal diet+1%L-Gln+0.5%L-Glu+0.1%L-Asp);T2(Low energy diet+1%L-Gln+0.5%L-Glu+0.1%L-Asp).Jejunum and ileum were obtained on d 5 or 21 post-weaning.T1 enhanced growth performance.T1 and T2 treatments improved small intestinal morphology by increasing villus height,goblet cell number and decreasing crypt *** post-weaning affected the efficacy of T2,but not T1,on energy *** normal energy supplementation,Gln,Glu,and Asp restored small intestinal energy homeostasis via replenishing the Krebs'cycle and down-regulating the AMPK(adenosine monophosphate activated protein kinase)*** these are not sufficient to maintain the intestinal energy-balance of piglets fed with a low energy diet on d 5 post-weaning,the AMPK,glycolysis,beta-oxidation,and mitochondrial biogenesis are activated to meet the high energy demand of *** data indicated that Gln,Glu,and Asp could restore the energy homeostasis of intestinal mucosa of weaning piglets under normal energy *** energy feeding may increase the susceptibility of piglets to stress,which may decrease the efficacy of Gln,Glu,and Asp on the restoration of energy *** findings provide new information on nutritional intervention for insufficient energy intake in weaning piglets.

关键词： Glutamine Glutamate Aspartate Small intestine Energy metabolism

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