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SSRN 2024年

作者： Xu, Jianhui Liu, Zhongwen Li, Dan Zhang, Yunfei Liu, Peng Wu, Qi Hong, Wentao Guo, Zining Cao, Kexin Chen, Junming Quan, Xin Cui, Zhijie School of Environment and Civil Engineering Dongguan University of Technology Dongguan523808 China State Key Laboratory of Organic Geochemistry Guangdong Provincial Key Laboratory of Environmental Protection and Resources Utilization Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou Wuhan510640 China Guangdong Provincial Key Laboratory of Environmental Protection and Resources and Utilization Guangzhou510640 China

Ranitidine (RAN), a medication frequently prescribed for various conditions, poses ecological risks due to its potential to transform into the carcinogenic byproduct N-nitrosodimethylamine (NDMA) within environmental systems. In this study, bismuth-doped titanium (Bi-Ti4O7), a novel and environmentally benign material, was synthesized via a straightforward coating method and evaluated for its effectiveness in the electrochemical oxidation of RAN. Compared to Ti4O7 electrode, the Bi-Ti4O7 electrode presents a remarkable promotion effect on the degradation of RAN, achieving a degradation efficiency of up to 90.41% for an initial RAN concentration of 10 mg/L within 120 min. The doping with Bi was observed to elevate the concentration of oxygen vacancies and to amplify the charge transfer characteristics at the Ti4O7 surface, thereby facilitating direct electron transfer (DET) between RAN and Bi-Ti4O7 electrode. Eight oxidation intermediates were identified during the electrochemical oxidation of RAN by Bi-Ti4O7 electrode, in which no NDMA was generated. The potential degradation pathways for RAN were proposed, including C-S bond cleavage, C-N bond cleavage, and electrophilic oxidation. The toxicity of RAN oxidation intermediates was significantly mitigated following electrochemical oxidation mediated by Bi-Ti4O7 electrode. Bi-Ti4O7 electrode maintained excellent oxidation efficiency of RAN (> 90%) within 20 degradation cycles. Furthermore, the Bi-Ti4O7 electrode showcased excellent pH adaptability and a wide applicability to diverse wastewater types, along with negligible release of Bi ion (0.148 µg/L), indicating its substantial potential for practical use. These results highlight the efficacy of Bi incorporation as a strategic approach for the remediation of RAN-polluted wastewater. © 2024, The Authors. All rights reserved.

关键词： Electrochemical oxidation

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The long-term effectiveness of ferromanganese biochar in soil Cd stabilization and reduction of Cd bioaccumulation in rice

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Biochar 2021年第4期3卷 499-509页

作者： Yuling Liu Haiyan Luo Boqing Tie Danyang Li Shoutao Liu Ming Lei Huihui Du Hunan Engineering&Technology Research Center for Irrigation Water Purification College of Resources and EnvironmentHunan Agricultural UniversityChangsha 410128People’s Republic of China Key Laboratory of Southern Farmland Pollution Prevention and Control Ministry of AgricultureChangsha 410128China Hunan Institute of Agro-Environment and Ecology Changsha 410128China

The application of Fe-Mn-modified biochar for the remediation of Cd-contaminated soil over long time periods has been little *** this paper,we describe the performance of coconut-shell-derived biochar modified with ferromanganese in relation to soil Cd stabilization and rice Cd bioaccumulation during a 3-year laboratory *** application dosages(0.05-0.5 wt%)and different rice varieties(the early and late rice)are also *** results show that ferromanganese is mainly loaded in biochar pores as MnFe_(2)O_(4),and that it decreases the specific surface area(SSA)and total pore volume of *** biochar(0.5 wt%)applied to paddy soil is more effective than the same dose of pristine biochar in decreasing the soil-exchangeable Cd fraction(27.42-41.92%vs 22.56-33.85%),predominantly by decreasing soil Eh and increasing root Fe *** biochar application helps to reduce Cd bioaccumulation in rice,especially in the grain(up to 48.6%-61.0%),and grain Cd levels(0.2 mg/kg)are all within the acceptable limit for food security in *** is shown that ferromanganese modification and application can maintain soil at low redox status,keep root Fe plaques at a high level,and may also increase the stability of pristine *** of these effects contribute to maintaining its high remediation efficiency over a 3-year inoculation *** results presented in this paper demonstrate the potential appli-cations of ferromanganese biochar in soil remediation and the improvement of food safety.

关键词： Biochar Ferromanganese Modification Cadmium Stabilization

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Elucidating the Binding Mechanism between Bovine Serum Albumin and Tio2 Nanoparticles with Diverse Properties: Insights from Spectroscopic Methods and Molecular Docking Simulation

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SSRN 2023年

作者： Zhang, Tingting Chen, Haoming Tan, Chunhu Li, Luo Liu, Chang Li, Weihua Yan, Changqing Li, Jiansheng Lu, Rui Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse School of Environmental and Biological Engineering Nanjing University of Science and Technology Nanjing210094 China Information Materials and Intelligent Sensing Laboratory of Anhui Province Anhui University Hefei230601 China School of Environment and Energy Engineering Anhui Provincial Key Laboratory of Environmental Pollution Control and Resource Reuse Anhui Jianzhu University Hefei230601 China Hefei Gotion High-tech Power Energy Co. Ltd. Hefei230011 China

The interaction mechanism between bovine serum albumin (BSA) and titanium dioxide (TiO2) nanoparticles with different shapes, surface charge and hydrophobic properties was studied using multiple spectral methods and molecular docking simulation. UV-vis spectra showed that when BSA interacted with the four TiO2 NPs, the intensity of the absorption peak at 278 nm increased, indicating that the TiO2 nanoparticles and BSA formed a stable ground state complex. The results of fluorescence spectra showed that the binding capacities of four different types of TiO2 nanoparticles with BSA are as follows: spherical TiO2 (s-TiO2) > rod-shaped TiO2 (r-TiO2) > positively charged TiO2 (c-TiO2) > hydrophobic TiO2 (h-TiO2). The results of synchronous fluorescence, circular dichroism (CD) and Fourier transform infrared (FTIR) spectroscopy revealed that s-TiO2, r-TiO2, and c-TiO2 have a weak effect on the conformation of BSA, whereas h-TiO2 has a greater effect. After adding 32 and 64 µg/mL TiO2, CD results showed that c-TiO2 increased the ɑ-helix content of BSA from 56.08% to 56.19% and 57.27%, respectively. h-TiO2 increased the ɑ-helix content of BSA to 60.46% and 62%. The FTIR results were consistent with CD. After the addition of TiO2 NPs, c-TiO2 and h-TiO2 increased the ɑ-helix content of BSA from 64.22% to 69.89% and 77.18%, respectively. Molecular docking results show that the bond energy between anatase TiO2 and BSA is -0.3 kJ/mol, and the bond energy between hydroxyl anatase TiO2 and BSA is -0.54 kJ/mol. The content of hydroxyl groups plays a key role in the binding capacity. © 2023, The Authors. All rights reserved.

关键词： Titanium dioxide

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Yeast-based nucleotide supplementation in mother sows modifies the intestinal barrier function and immune response of neonatal pigs

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Animal Nutrition 2021年第1期7卷 84-93页

作者： Lumin Gao Chunyan Xie Xiaoxiao Liang Zhihong Li Biao Li Xin Wu Yulong Yin Key Laboratory of Agro-ecological Processes in Subtropical Region Institute of Subtropical AgricultureChinese Academy of SciencesNational Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry ProductionHunan Provincial Engineering Research Center for Healthy Livestock and Poultry ProductionChangshaHunan 410125China Hunan Co-Innovation Center of Safety Animal Production College of Resources and EnvironmentHunan Agricultural UniversityChangsha 410128China Henan Zhongke Ground Food Co. LtdZhengzhou 450001China The Hubei Provincial Key Laboratory of Yeast Function Angel Yeast Co.LtdYichang 443003China Institute of Biological Resources Jiangxi Academy of SciencesNanchang 330096China

In the present study,we aimed to evaluate the effects of maternal yeast-based nucleotide(YN)sup-plementation on the intestinal immune response and barrier function in neonatal pigs,as well as the diarrhoea rate and growth performance in suckling ***-four late-gestation sows were assigned to the following groups:the CON(fed a basal diet)and YN groups(fed a basal diet with 4 g YN/kg diet).The experiment started on d 85 of gestation and ended on d 20 of *** rate and average daily gain of the piglets were recorded,and samples of blood and intestines from neonatal piglets were collected before they consumed colostrum during *** with the CON group,maternal YN supplementation increased the weaning weight of litter and decreased the diarrhoea rate(P<0.01).In addition,maternal YN supplementation promoted the ileal villus development in the neonates compared with that in the CON group(P<0.01).Maternal YN supplementation also increased the ileal secretory immunoglobulin A(sIgA)level compared with that in the CON group(P<0.05).The real-time PCR results showed that maternal dietary YN supplementation increased the jejunal and ileal expression of interleukin(IL)-17,IL-8,IL-1β,IL-10 and tumor necrosis factor(TNF)-αin the neonates compared with that in the CON group(P<0.05).Overall,maternal nucleotide supplementation improved the villus development and innate immunity of neonatal piglets during late *** may be associated with the decrease in diarrhoea and the increase in weaning weight of the litter of suckling piglets.

关键词： Nucleotide Diarrhoea Growth performance Sow Neonatal piglet

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Microbially-driven phosphorus cycling and its coupling mechanisms with nitrogen cycling in mangrove sediments

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Science of the Total Environment 2025年 958卷 178118页

作者： Liu, Fei Zeng, Jiaxiong Ding, Jijuan Wang, Cheng He, Zhili Liu, Zhiwei Shu, Longfei School of Life Sciences Jiaying University Meizhou514015 China Conservation and Utilization Laboratory of Mountain Characteristic Resources in Guangdong Province Meizhou514015 China School of Environmental Science and Engineering Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology State Key Laboratory for Biocontrol Sun Yat-sen University Guangzhou510275 China Zhuhai509082 China

The phosphorus (P) cycle plays a crucial role in the biogeochemical cycling of mangrove sediments. However, the diversity of microbially-driven P-cycling and its coupling with nitrogen (N)-cycling remain poorly understood. In this study, we used metagenomic approaches to investigate microbial P-cycling and its potential interactions with N-cycling in mangrove sediments. Our results revealed that pH, total carbon, and total nitrogen were key environmental factors influencing the diversity of P-cycling microbial communities. Phosphorus metabolic pathways differed among mangrove sediment depths. In surface sediments (0–5 cm), microbial communities primarily acquired readily available inorganic phosphorus, whereas, in deeper sediments (>60 cm), they hydrolyzed more persistent triphosphates, reabsorbed nucleotides, and sourced free phosphate, reflecting a shift in phosphorus transport modes. We also identified glutamate metabolism as a potential pathway linking P-cycling with N-cycling, with these functions co-occurring in both contigs and genomes. Additionally, the diversity of microbial communities associated with the P-cycling increased with sediment depth, suggesting that microbially-driven P-cycling diversifies as depth increases. This study provides new insights into P-cycling and its potential coupling with N-cycling through glutamate metabolism, its coupling with N-cycling through glutamate metabolism. © 2024 Elsevier B.V.

关键词： Abiotic

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Manganese methionine hydroxy analog chelated affects growth performance,trace element deposition and expression of related transporters of broilers

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Animal Nutrition 2021年第2期7卷 481-487页

作者： Tiantian Meng Lumin Gao Chunyan Xie Yangkui Xiang Yiqiang Huang Yawei Zhang Xin Wu CAS Key Laboratory of Agro-ecological Processes in Subtropical Region Institute of Subtropical Agriculture National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry ProductionChangsha410125China Hunan Co-Innovation Center of Safety Animal Production College of Animal Science and Technology College of Resources and EnvironmentHunan Agricultural UniversityChangsha410128China Tianjin Institute of Industrial Biotechnology Chinese Academy of SciencesTianjin300308China Hunan Provincial Research Center of Mineral Element Nutrition Engineering Technology Xing-Jia Bio-engineering Co.Ltd.410300ChangshaChina

The present study aimed to evaluate the effects of manganese methionine hydroxyl analog chelated(Mn-MHAC)as a manganese(Mn)source on growth performance and trace element deposition in broilers.A total of 432 Arbor Acres commercial female broilers were fed a basal corn-soybean diet containing Mn at 25.64 mg/kg diet for 10 *** were then randomly assigned to 6 groups,including a control group(the basal diet),a Mn sulfate group(the basal diet supplemented with Mn at 100 mg/kg diet),and 4 Mn-MHAC groups(the basal diet supplemented with Mn-MHAC at 25,50,75 and 100 mg Mn/kg diet,respectively).The results showed that compared with the control group,groups supplemented with Mn-MHAC had a positive effect on BW(quadratic,P=0.017)and ADG(quadratic,P=0.017).Moreover,the Mn-MHAC(50 mg Mn/kg diet)group had significantly greater BW and ADG(P<0.05)compared with the other Mn-MHAC *** element deposition results also showed that tibial Mn increased(linear or quadratic,P-0.002 and 0.009,respectively)in groups fed diets with increased levels of *** contrast,Fe deposition decreased both in the heart(linear,P-0.020)and tibia(P<0.05).In addition,the Mn-MHAC supplement noticeably lowered serum Mn-SOD activity(linear or quadratic,P-0.048 and 0.019,respectively).The relative mRNA levels of divalent metal transporter 1(DMT1)(P=0.024),ferro-portin 1(FPN1)(P=0.049),and Cu transporter-1(CTR1)(P<0.001)in the duodenum,as well as CTR1 in the jejunum and ileum(P=0.040 and 0.011,respectively)were higher in the Mn-supplemented group than in the control ***,the relative mRNA level of DMT1 in the jejunum and ileum of broilers in the Mn-MHAC group(50 mg Mn/kg diet)did not differ from those in the control group,but was lower than those in the Mn sulfate group(P<0.05).In conclusion,Mn-MHAC dietary supplementation improved the growth performance and trace element deposition in *** this study,we recommend the opti-mum Mn-MHAC level to meet the Mn requirement of broile

关键词： Manganese methionine hydroxy analog chelated Trace element Deposition Transporter Broiler

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Distribution of Triarrhena lutarioriparia and its reserve characteristics of nitrogen and phosphorus in Dongting Lake 3

Distribution of Triarrhena lutarioriparia and its reserve ch...

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3rd International Symposium on Architecture Research Frontiers and Ecological Environment, ARFEE 2020

作者： Xu, Youze Fu, Guangyi Tang, Nan He, Zhonghao Jian, Lincheng Zhao, Yuanyuan Hunan Research Academy of Environmental Science Hunan Provincial Key Laboratory of Water Pollution Control Technology Changsha Hunan410000 China Beijing Normal University-Hong Kong Baptist University United International College Zhuhai Guangdong519000 China

Triarrhena lutarioriparia, a typical and most abundant macrophyte in Dongting lake wetland, was in the state of abandonment following the papermaking industry revocation in the lake basin. In order to provide scientific basis for precise management of T. lutarioriparia, the T. lutarioriparia distribution charateristics in Dongting Lake and its storage characteristics of nutrients were investigated in this study. Remote sensing interpretation results showed that the total area of T. lutarioriparia in Dongting Lake wetland was 58, 450 ha, 48.31% of which distributed in South Doting Lake wetlands. The nutrients contents were significantly different in T. lutarioriparia tissues, ranking in the descending order of spikes (TN 27.90 mg/g, TP 3.46 mg/g)>leaves (TN 16.38 mg/g, TP 2.11 mg/g)>stems (TN 5.38 mg/g, TP 0.85 mg/g). The total P quantities in each T. lutarioriparia tissue were ranked in the order: stems (560.26 t)>leaves (396.52 t)>spikes (284.67 t), while the total N quantities were within the range of 2170.02-2801.3 t. It was estimated that about 7712.99 t of TN and 1241.45 t of TP were annually removed from Dongting Lake by reaping T. lutarioriparia. The nutrients stored in the dead tissues of T. lutarioriparia might possess non-negligible impact on the water quality of Doting Lake. © The Authors, published by EDP Sciences, 2021.

关键词： Lakes

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Intrauterine growth restriction alters growth performance, plasma hormones,and small intestinal microbial communities in growing-finishing pigs

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Journal of Animal Science and Biotechnology 2021年第1期12卷 340-357页

作者： Liang Xiong Jinming You Wanghong Zhang Qian Zhu Francois Blachier Yulong Yin Xiangfeng Kong CAS Key Laboratory of Agro-ecological Processes in Subtropical Regions 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 410125HunanChina Key Laboratory of Animal Nutrition in Jiangxi Province College of Animal Science and TechnologyJiangxi Agricultural UniversityNanchang 440000JiangxiChina UniversitéParis-Saclay AgroParisTechINRAEUMR PNCA75005 ParisFrance.

Background: The interaction of the gut microbiota with key metabolic and physiological processes may be associated with poor growth outcomes in animals born with intrauterine growth restriction(IUGR).Results: Growth performance, plasma hormone concentrations, and intestinal microbiota composition were analyzed in IUGR pigs and in normal birth weight(NBW) pigs when the NBW pigs reached 25, 50, and 100 kg of body weight(BW). Compared to NBW pigs, IUGR pigs had lower initial, weaned, and final BW, and lower average daily gain and average daily feed intake in all the considered time points. In the 25 kg BW group, IUGR pigs had higher concentrations of plasma ghrelin and pancreatic polypeptide(PP), but lower insulin concentration than NBW pigs, while the situation was reversed in the 50 kg BW group. As compared to NBW pigs, IUGR pigs had higher microbial alpha diversity in the jejunum and ileum;in the 50 and 100 kg BW groups, IUGR pigs had higher Firmicutes abundance but lower Proteobacteria abundance in the jejunum, and lower Lactobacillus abundance in the jejunum and ileum;in the 25 kg BW group, IUGR pigs showed higher unclassified Ruminococcaceae abundance in the ileum;and in 25 and 50 kg BW groups, IUGR pigs showed lower Ochrobactrum abundance in the ***'s correlation revealed that Lactobacillus was negatively correlated with growth performance, while unclassified Ruminococcaceae was positively correlated. Predictive metagenomic analysis detected significantly different expression of genes in the intestinal microbiota between IUGR and NBW pigs, suggesting different metabolic capabilities between the two ***: Growing-finishing IUGR pigs showed lower growth performance, higher microbial alpha diversity, and differences in plasma hormone concentrations compared to NBW pigs. Alterations in the abundance of Firmicutes,Proteobacteria, Ruminococcaceae, Lactobacillus, and Ochrobactrum in the small intestine may be associated with IUGR, and may the

关键词： Growing-finishing pigs Growth performance Intrauterine growth restriction Microbial community Small intestine

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Synthesis of Activated Carbon-Supported Nano Copper Oxide and its Inactivation Performance on Escherichia Coli in Water

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SSRN 2024年

作者： Li, Bing Zuo, Qian Deng, Zhiyi Zheng, Xiangyu Li, Ping Wu, Jinhua School of Environment and Energy South China University of Technology Guangzhou510006 China School of Environment and Resources Xiangtan University Xiangtan411105 China The Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters Ministry of Education Guangzhou510006 China The Key Laboratory of Environmental Protection and Eco-Remediation of Guangdong Regular Higher Education Institutions Guangzhou510006 China Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling Guangzhou510006 China

A novel sterilization strategy was proposed to inactivate Escherichia coli (E. coli) by loading nano copper oxide onto activated carbon (nCuO/AC) with a facile impregnation method. Surface techniques proved that nCuO with a size of 100-200 nm was evenly loaded on AC surface, which improved its dispersity and reactivity. XPS analysis further revealed a cycle of surface-bonded Cu(II) to Cu(I) in the nCuO matrix that was driven by reducing groups on AC surface such as hydroxyl. The resultant Cu(I) activated dissolved oxygen to produce reactive oxygen species for bacterial inactivation. Superoxide radical (•O2-) was proved to be the primarily oxidative species during the sterilization process by quenching investigations. Therefore, the nCuO/AC achieved an enhanced inactivation efficiency of 6.0 log CFU/mL as compared to those of 1.1 and 0.4 log CFU/mL by the nCuO and AC, respectively. The above sterilization reaction was pH-dependent and high inactivation efficiency could be achieved under neutral conditions. Additionally, the nCuO/AC exhibited excellent stability with an inactivation efficiency of 5.4 log CFU/mL after 4 cycles. Spent nCuO/AC showed considerable potential in renewability because it could inactivate 5.5 log CFU/mL E. coli after peeling off residual nCuO on AC surface by sulfuric acid and reloading new nCuO by impregnation with a regeneration rate up to 97.2%. The above results demonstrated that nCuO/AC could be a promising bactericidal material for water treatment. © 2024, The Authors. All rights reserved.

关键词： Activated carbon

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Optimization and verification of selective removal of organophosphate esters from wastewater by molecularly imprinted adsorbent

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Chemosphere 2024年 350卷 141082页

作者： Wang, Juan Du, Xiaodong Wang, Zuifei Wu, Peiwen Zhou, Jiangmin Tao, Xueqin Dang, Zhi Lu, Guining School of Environment and Energy South China University of Technology Guangzhou510006 China College of Life and Environmental Sciences Wenzhou University Wenzhou325035 China College of Resources and Environment Zhongkai University of Agriculture and Engineering Guangzhou510225 China The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters Ministry of Education South China University of Technology Guangzhou510006 China Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling South China University of Technology Guangzhou510006 China

Tributyl phosphate (TNBP), a new type of flame retardant, is an emerging pollutant and has been frequently detected in various matrices such as wastewater. Efficient removal of TNBP is critical for wastewater treatment. In this study, molecularly imprinted polymer (MIP) was prepared using precipitation polymerization for selective adsorption of TNBP. The results showed that MIP had a porous structure and formed effective imprinting cavities, which was primarily responsible for its superior adsorption ability. The adsorption of TNBP by MIP was carried out following both the pseudo-secondary kinetic model and the Langmuir isothermal adsorption model. MIP adsorbed TNBP rapidly and reached adsorption equilibrium within 30 min with 923 μmol g−1 at 298 K. The adsorption capacity and adsorption rate of MIP were respectively 2 and 5.49 times those of non-molecularly imprinted polymers. In addition, MIP could effectively counter disturbances from external parameters like temperature and pH, exhibiting strong environmental flexibility. MIP can specifically adsorb organophosphate esters, and can selectively adsorb TNBP under the interference of coexisting contaminants such as1,3-diphenylguanidine and isazofos. In actual bodies of water, MIP's highly selective adsorption of TNBP retains its advantage. The selective adsorption of MIP was mainly due to the common phosphate skeleton, and the specific substituent of organophosphate esters played an important role in the imprinting process. Hydrogen bonding might be involved in the polymerization process of TNBP with acrylamide and the adsorption process of TNBP by *** exhibited good reuse efficiency, the total adsorption capacity decreased by no more than 25% after 7 reuse cycles. This study provides a simple and efficient method for selective removal of organophosphate from wastewater. © 2023 Elsevier Ltd

关键词： Wastewater treatment

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