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2012 International Conference on environmental and Materials Engineering, EME 2012

作者： Wen, Guiqing Yang, Duo Jiang, Zhiliang Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology College of Environment and Resource Guangxi Normal University Guilin 541004 China

ISBN: (纸本)9783037856017

In pH 6.6 Na2HPO4-NaH2PO4 buffer solution and in the presence of NaCl, nanogolds were aggregated to form stable aggregated-nanogolds (ANG). The molecular probe of coomassie brilliant blue G-250 (CBBG) adsorbed on the surface of ANG to form CBBG -ANG conjugates that produce the strongest surface-enhanced resonance Raman scattering (SERRS) peak at 1171 cm-1. Under the optimized conditions, the increased intensity ΔI was linear to CBBG concentration in the range of 0.29×10-7 - 4.68×10-7 mol/L, with the regression equation of ΔI = 0.86C - 17.1. A fast and sensitive method for trace CBBG was developed. © (2013) Trans Tech Publications, Switzerland.

关键词： Raman scattering

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Synergistic effect of lactopeptide and ectoine on delaying yellowing and maintaining the postharvest quality of pak choi (Brassica rapa subsp. chinensis)

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International Journal of Biological Macromolecules 2025年第PT 1期311卷 143384页

作者： Ye, Xiaoyun Wang, Mina Zhao, Liqun Wang, Zhiqiang Yu, Lingda Yuan, Shuzhi Xu, Xiaodi Xu, Xiangbin Zuo, Jinhua Chen, Qing Feng, Bihong Yue, Xiaozhen Wang, Qing of Ministry of Agriculture Institute of Agri-food Processing and Nutrition Beijing Vegetable Research Center Beijing Academy of Agriculture and Forestry Sciences Beijing100097 China Key Laboratory of Food Nutrition and Functional Food of Hainan Province School of Food Science and Engineering Hainan University Haikou570228 China College of Agricultural Guangxi University Nanning530004 China Beijing Agricultural Technology Extension Station Beijing100029 China School of Life Sciences Anhui Agricultural University Hefei230036 China Chongqing University of Arts and Sciences Chongqing402160 China Beijing Key Laboratory of Farmyard Soil Pollution Prevention-control and Remediation College of Resources and Environmental Sciences China Agricultural University Beijing100193 China

Lactase peptide maintains food quality and ectoine stabilizes cell structure and function. The present study investigated the synergistic effect of 0.5 % lactopeptide and 0.1 % ectoine on preserving the quality of pak choi stored at 20 °C and 90 % relative humidity (RH) for 6 d. Results indicated that the combined treatment significantly reduced weight loss, electrolyte leakage, respiration rate, and ethylene generation compared to the untreated control or pak choi treated with ectoine. Furthermore, the combined treatment enhanced the level of ascorbic acid and flavonoids, and increased superoxide dismutase (SOD) activity. A combined transcriptomic and metabolomic analysis revealed the upregulation of key genes encoding proteins involved in the chlorophyll biosynthesis pathway, including protochlorophyllide reductase (POR), divinyl chlorophyllide a 8-vinyl-reductase (DVR), and chlorophyll/bacteriochlorophyll a synthase (CHLG), while the expression of the gene encoding a chlorophyll-degrading enzyme, chlorophyll (ide) b reductase (NOL), was suppressed. The combined treatment increased the abundance of metabolites associated with the citrate cycle pathway, including L-glutamate, L-glutamine, and L-asparagine. Additionally, the expression of chalcone isomerase (4CL), naringenin 3-dioxygenase (F3H) and chalcone synthase (CHS) in the phenylalanine, tyrosine, and tryptophan biosynthesis pathways, was elevated compared to the untreated control, resulting in increased levels of luteolin and naringenin chalcone. Collectively, our results indicate that the combined use of ectoine and lactopeptide effectively delayed the yellowing and postharvest senescence of pak choi during storage. The present study provides a foundation for further investigations of the postharvest metabolism of pak choi. © 2025

关键词： Transcription

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Synthesis of Hydroxyapatite Mulberry Stem Biochar Composites for Efficient Pb(II) Adsorption from Aqueous Solutions

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Water (Switzerland) 2025年第9期17卷

作者： Wang, Dunqiu Zhou, Xinyu Liang, Meina Wu, Zimeng Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology Guilin University of Technology Guilin541004 China Engineering Research Center of Watershed Protection and Green Development Guilin University of Technology Guilin541006 China Guangxi Engineering Research Center of Comprehensive Treatment for Agricultural Non-Point Source Pollution Guilin University of Technology Guilin541006 China Modern Industry College of Ecology and Environmental Protection Guilin University of Technology Guilin541006 China Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area Guilin University of Technology Guilin541006 China Yunnan Xinlian Environmental Technology Co. Ltd. Kunming650500 China

In this study, two biochar composites, namely hydroxyapatite/mulberry stem biochar (HMp) and magnesium-doped HMp (Mg0.1-HMp), were prepared using mulberry stem as the major raw material using the sol–gel process. Characterization and batch experiments were carried out on HMp and Mg0.1-HMp to investigate the Pb(II) adsorption mechanism and the factors affecting the adsorption, respectively. The results indicated that carboxylic compounds, phenols, and carbonyl functional groups were formed on the surfaces of HMp and Mg0.1-HMp. At an optimal pH of 5, an adsorption period of 6 h was achieved at an initial Pb(II) concentration of 100 mg/L and adsorbent quantity of 2 g/L. The maximum Pb(II) adsorption capacities of the HMp and Mg0.1-HMp were 303.03 and 312.50 mg/g, respectively, at 25 °C. The maximum Pb(II) adsorption capacity of Mg0.1-HMp was 2.55 times more than that of mulberry stem biochar (MBC). The adsorption of Pb(II) by HMp and Mg0.1-HMp is consistent with the Langmuir isotherm and pseudo-second-order kinetic models, demonstrating a spontaneous, endothermic, and irreversible process dominated by monolayer chemical adsorption. These results show that the mechanisms of Pb(II) by Mg0.1-HMp mainly involved electrostatic interaction, complexation, precipitation, and ion exchange. © 2025 by the authors.

关键词： Adsorption isotherms

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Biofilm response and removal via the coupling of visible-light-driven photocatalysis and biodegradation in an environment of sulfamethoxazole and Cr(Ⅵ)

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Journal of environmental Sciences 2022年第12期34卷 50-61页

作者： Liushu Pan ZhouWan Qilin Feng Jue Wang Jianhua Xiong Shuangfei Wang Hongxiang Zhu Guoning Chen School of Resources Environment and MaterialsGuangxi UniversityNanning 530004China Guangxi Bossco Environmental Protection Technology Co. Ltd.Nanning 530007China Guangxi Key Laboratory of Clean Pulp&Papermaking and Pollution Control Nanning 530004China

The widespread contamination of water systems with antibiotics and heavy metals has gained much *** coupled visible-light-responsive photocatalysis and biodegradation(ICPB)provides a novel approach for removing such mixed *** ICPB,the photocatalysis products are biodegraded by a protected biofilm,leading to the mineralization of refractory *** the present study,the ICPB approach exhibited excellent photocatalytic activity and biodegradation,providing up to~1.27 times the degradation rate of sulfamethoxazole(SMX)and 1.16 times the Cr(Ⅵ)reduction rate of visiblelight-induced ***-dimensional fluorescence analysis demonstrated the synergistic ICPB effects of photocatalysis and biodegradation for removing SMX and reducing Cr(Ⅵ).In addition,the toxicity of the SMX intermediates and Cr(Ⅵ)in the ICPB process significantly *** use of MoS_(2)/CoS_(2)photocatalyst accelerated the separation of electrons and holes,with·O_(2)^(–)and h+attacking SMX and ereducing Cr(Ⅵ),providing an effective means for enhancing the removal and mineralization of these mixed pollutants via the ICPB *** microbial community results demonstrate that bacteria that are conducive to pollutant removal are were enriched by the acclimation and ICPB operation processes,thus significantly improving the performance of the ICPB system.

关键词： Photocatalysis Biodegradation Sulfamethoxazole degradation Cr(Ⅵ)reduction Microbial community

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General situation and hydrologic characteristics of xijiang river basin 4

General situation and hydrologic characteristics of xijiang ...

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4th International Symposium on Resource Exploration and environmental Science, REES 2020

作者： Zhou, Chengfeng Pan, Binlin Jin, Xin Guangxi Key Laboratory of Theory and Technology for Environmental Pollution Control University of Technology in Guilin Guilin Guangxi541004 China Collaborative Innovation Center for Water Pollution Control and Water Safety Guarantee University of Technology in Guilin Guilin Guangxi541004 China

Taking Xijiang River Basin as the research area, this paper introduces the general situation of natural geography of the area, analyzes the hydrological characteristics of precipitation, evaporation, runoff, flood and water quality, analyzes the change law of each hydrological element, and provides the hydrological and meteorological regular data for the regional social and economic construction. © 2020 Published under licence by IOP Publishing Ltd.

关键词： Water quality

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Primary study on the improvement and application of formulation optimization of 2116# rosin modified phenolic resin 6th

Primary study on the improvement and application of formulat...

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6th International Conference on Material Science and Engineering, ICMSE 2019

作者： Zhang, Qing Huang, Lili Wu, Meiye Yu, Xiaozhang College of Environmental Science and Engineering Guilin University of Technology Guilin541006 China The Guangxi Key Laboratory of Theory & Technology for Environmental Pollution Control Guilin541006 China

ISBN: (纸本)9783035716092

2116# Rosin Modified Phenolic Resin is synthesized by means of one-step process taking calcium hydroxide as catalyst and Rosin, Bisphenol A, solid formaldehyde and glycerol as main raw materials. The formulation and process are improved and characterized. The result shows that it satisfies technical performance indicators. And, it is preliminarily applied to ink. This resin is expected to be applied to printing ink and coating industry. © 2020 Trans Tech Publications Ltd, Switzerland.

关键词： Hydrated lime

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Study on the performance and mechanism of cobaltous ion removal from water by a high-efficiency strontium-doped hydroxyapatite adsorbent

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environmental Science and pollution Research 2024年第20期31卷 30059-30071页

作者： Zhu, Zongqiang Liu, Shuangshuang Zhu, Yinian He, Hao Zhang, Jun Mo, Xiaoxin Tang, Shen Fan, Yinming Zhang, Lihao Zhou, Xiaobin Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area Guilin University of Technology Guilin541004 China The Guangxi Key Laboratory of Theory and Technology for Environmental Pollution Control Guilin University of Technology Guilin541004 China Technical Innovation Center of Mine Geological Environmental Restoration Engineering in Southern Karst Area Nanning530022 China College of Environmental Science and Engineering Guilin University of Technology Guangxi Guilin541004 China

In this study, a high-efficiency strontium-doped hydroxyapatite (Sr-HAP) adsorbent was synthesized by a sol-gel method for removing cobaltous ions (Co(II)) from water. The effects of adsorbent dose, initial solution pH, initial Co(II) concentration and temperature on the removal performance of Co(II) were investigated. Experimental results indicated that the optimum Sr-HAP dose was 0.30 g/50 mL solution, the Sr-HAP adsorbent could effectively remove Co(II) in a wide pH range of 3–8. Increasing temperature was conducive to the adsorption, and the maximum Co(II) adsorption capacity by Sr-HAP reached 48.467 mg/g at 45 °C. The adsorption of Co(II) followed the pseudo-second-order kinetic model, indicating that the Co(II) adsorption by Sr-HAP was attributed mainly to chemisorption. The isothermal adsorption results showed that at lower Co(II) equilibrium concentration, the Langmuir model fitted the data better than the Freundlich model but opposite at higher Co(II) equilibrium concentration. Therefore, the adsorption of Co(II) was a process from monolayer adsorption to multilayer adsorption with the increase of the Co(II) equilibrium concentration. The diffusion analysis of Co(II) to Sr-HAP indicated that the internal diffusion and surface adsorption were the rate-controlled steps of Co(II) adsorption. Thermodynamic study demonstrated that the Co(II) adsorption process was spontaneous and endothermic. The mechanism study revealed that in addition to chemisorption, Sr-HAP also removed Co(II) ions from water via ion exchange and surface complexation. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024.

关键词： Ions

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Resonance Rayleigh scattering spectral determination of se using NaH2PO2 as reducer

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2013 2nd International Symposium on Materials Science and Engineering technology, ISMSET 2013

作者： Li, Yuan Liang, Ai Hui Yin, Wen Qing Jiang, Zhi Liang Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection Ministry of Education Guangxi Normal University Guangxi Key Lab. of Environmental Pollution Control Theory and Technology Guilin 541004 China

ISBN: (纸本)9783037858028

In the HCl medium of 0.90 mol/L, Se (IV) was reduced by NaH2PO2 and generated selenium nanoparticles, and there is a resonance Rayleigh scattering (RRS) peak at 588 nm. Under the selected conditions, with the increased of Se (IV) concentration, generated selenium nanoparticles increased, the resonance Rayleigh scattering peak intensity (ΔI588nm) at 588 nm was increased, and the ΔI588nm had good linear relationship to Se(IV) concentration in the range of 0.1-1.5 mg/L, with a linear regression equation of ΔI588nm= 489.9C + 9.0, the detection limit of 12.0 μg/L. © (2013) Trans Tech Publications, Switzerland.

关键词： Sodium compounds

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Catalytic reaction-nanogold resonance rayleigh scattering method for the determination of trace tellurium

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2013 2nd International Symposium on Materials Science and Engineering technology, ISMSET 2013

作者： Zeng, Qing Liang, Ai Hui Yin, Wen Qing Jiang, Zhi Liang Key Lab. of Ecology of Rare and Endangered Species and Environmental Protection Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology Guangxi Normal University Ministry of Education Guilin 541004 China

ISBN: (纸本)9783037858028

In 6 mol/L HCl medium, TeO4 2- is reduced by NaH2PO2 to Te that catalyze NaH2PO2 reducing HAuCl4 to form gold nanoparticles (AuNPs), which exhibited a strong resonance Rayleigh scattering (RRS) peak at 370 nm. With the TeO4 2- concentration increased, the catalytic reaction enhanced and formed more AuNPs that resulting in the RRS peak increased. Under the chosen conditions, the RRS intensity at 370 nm enhanced linearly with the concentration of TeO4 2- in the range of 12.5-287.5 nmol/L. This RRS method was sensitivity, selectivity, and simplicity. © (2013) Trans Tech Publications, Switzerland.

关键词： Gold nanoparticles

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Surface-enhanced resonance Raman scattering spectral probe based on functional nucleic acid and nanoparticle

Surface-enhanced resonance Raman scattering spectral probe b...

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2013 2nd International Conference on Sport Material, Modelling and Simulation, ICSMMS 2013

作者： Liu, Qingye Wen, Guiqing Ye, Fanggui Liang, Aihui Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection Ministry of Education Guangxi Key Laboratory of Environmental Pollution Control Theory and Tech Guangxi Normal University Guilin 541004 China

ISBN: (纸本)9783037856635

Highly sensitive and selective surface-enhanced resonance Raman scattering (SERRS) spectral detection technique are developed by combining the functional nucleic acid (FNA) including aptamer and DNAzyme, and nanoparticle such as gold/silver (NG/NS) aggregation. The recent progress of SERRS was reviewed in this paper. © (2013) Trans Tech Publications, Switzerland.

关键词： Nanoparticles

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