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Fabrication of supported acid catalytic composite fibers by a simple and low-cost method and their application on the synthesis of liquid biofuel 5-ethoxymethylfurfural

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Green Energy & Environment 2022年第1期7卷 165-171页

作者： Yinhua Yan Huiqin Guo Kexin Li Liushui Yan Key Laboratory of Jiangxi Province for Persistent Pollutants control and resources Recycle NanChang Hangkong UniversityNanChang330063China national-local joint engineering research center of heavy metals polluants control and resource utilization NanChang Hangkong UniversityNanChang330063China

In this paper,sulfonic groups functionalized annealed bio-based carbon microspheres loaded polytetrafluoroethylene(A-BCMSs-SO_(3)H@PTFE)fibers with high activity,high stability,and easy regeneration were successfully fabricated by a simple method using low-cost raw materials.The characterization results showed that the annealed biomass carbon microspheres derived from waste Camellia oleifera shells were evenly distributed on the polytetrafluoroethylene fibers and the sulfonic groups can be successfully loaded on the surface of annealed biomass carbon microspheres by room temperature sulfonation.Subsequently,the as-prepared A-BCMSs-SO_(3)H@PTFE fibers were applied to the acidcatalyzed synthesis of liquid biofuel 5-ethoxymethylfurfural.The catalytic experiment results indicated that the annealing temperature and time during catalyst preparation have a significant effect on the activity and selectivity of A-BCMSs-SO_(3)H@PTFE fibers.The results of catalytic reaction kinetics showed that the yield of 5-ethoxymethylfurfural can reach more than 60%after 72 h of acid-catalyzed reaction.The stability test showed that the as-prepared A-BCMSs-SO_(3)H@PTFE fibers still maintained a stable acid catalytic activity after four recycles.

关键词： Acid catalysis Waste Camellia oleifera shells Sulfonic groups Polytetrafluoroethylene fibers 5-Ethoxymethylfurfural

A pyrazine based metal-organic framework for selective removal of copper from strongly acidic solutions

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Frontiers of Environmental Science & engineering 2023年第3期17卷 75-86页

作者： Jiachuang Shao Penghui Shao Mingming Peng Min Li Ziwei Yao Xiuqin Xiong Caiting Qiu Yufan Zheng Liming Yang Xubiao Luo Key Laboratory of Jiangxi Province for Persistent Pollutants control and resources Recycle National-Local Joint Engineering Research Center of Heavy Metals Pollutants Control and Resource utilizationNanchang Hangkong UniversityNanchang 330063China Department of Chemical engineering Chongqing University of Science and TechnologyChongqing 401331China

The selective capture of copper from strongly acidic solutions is of vital importance from the perspective of sustainable development and environmental protection.Metal organic frameworks(MOFs)have attracted the interest of many scholars for adsorption due to their fascinating physicochemical characteristics,including adjustable structure,strong stability and porosity.Herein,pz-UiO-66 containing a pyrazine structure is successfully synthesized for the efficient separation of copper from strongly acidic conditions.Selective copper removal at low pH values is accomplished by using this material that is not available in previously reported metal–organic frameworks.Furthermore,the material exhibits excellent adsorption capacity,with a theoretical maximum copper uptake of 247 mg/g.As proven by XPS and FT-IR analysis,the coordination of pyrazine nitrogen atoms with copper ions is the dominant adsorption mechanism of copper by pz-UiO-66.This work provides an opportunity for efficient and selective copper removal under strongly acidic conditions,and promises extensive application prospects for the removal of copper in the treatment for acid metallurgical wastewater.

关键词： Pyrazine Metal-organic frameworks Copper removal Strong acidity High selectivity

Feasible fabrication of o-phenanthroline-based polymer adsorbent for selective capture of aqueous Ag(Ⅰ)

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Chinese Chemical Letters 2023年第3期34卷 191-194页

作者： Xuan Ding Wanjun Yu Xin Sheng Hui Shi Deng You Mingming Peng Penghui Shao Liming Yang Lingling Liu Xubiao Luo Key Laboratory of Jiangxi Province for Persistent Pollutants control and resources Recycle Nanchang Hangkong UniversityNanchang 330063China national-local joint engineering research center of heavy metals Pollutants control and resource utilization Nanchang Hangkong UniversityNanchang 330063China

Devising a desirable adsorbent for efficiently selective capture of Ag(Ⅰ) from wastewater has attracted much attention but faced with huge challenges. Herein, a novel linear o-phenanthroline-based polymer L-PRL was prepared via chemical oxidative polymerization for the adsorption of Ag(Ⅰ). The maximum adsorption capacity for Ag(Ⅰ) by L-PRL is 325.8 mg/g at pH 0. In addition, L-PRL owes ascendant selectivity for Ag(Ⅰ) from aqueous solutions containing various interfering metal ions of Pb(Ⅱ), Co(Ⅱ), Ni(Ⅱ), Cd(Ⅱ)and Fe(Ⅲ). Multiple characterizations of FT-IR and XPS uncover that the N groups on L-PRL act as adsorption sites to coordinate with Ag(Ⅰ). Density functional theory(DFT) calculations further evidence the mechanism that L-PRL is provided with the admirable adsorptivity and selectivity for Ag(Ⅰ). It is mainly attributed to the most stable complexes of L-PRL with Ag(Ⅰ), which possesses shortest Ag-N bond length compared with other heavy metal ions. Furthermore, 93.5% of initial adsorption capacity is reserved after four continuous regeneration cycles, indicating that L-PRL is equipped with superior recyclability and durability, and L-PRL is capable of removing Ag(Ⅰ) in low-concentration actual Ag(Ⅰ)-containing wastewater completely. This study shed light on the rational design of polymer adsorbents and in-depth insight into selective removal of aqueous Ag(Ⅰ).

关键词： Wastewater o-Phenanthroline Polymer Adsorbent Ag(Ⅰ) Selective capture

Health risk assessment of heavy metal pollution in groundwater of a karst basin,SW China

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Journal of Groundwater Science and engineering 2024年第1期12卷 49-61页

作者： Fu-ning Lan Yi Zhao Jun Li Xiu-qun Zhu Karst Ecosystem National Observation and Research StationPingguo 531406GuangxiChina Institute of Karst Geology International Research Centre on KarstUnder the Auspices of UNESCOGuangxi Karst Resources and Environment Research Center of Engineering TechnologyChinese Academy of Geological SciencesKarst Dynamics LaboratoryMNR and GuangxiGuilin 541004China Hebei Key Laboratory of Water Quality engineering and Comprehensive utilization of Water resources Hebei University of ArchitectureZhangjiakou 075000Hebei ProvinceChina College of Hydrology and Water resources Hohai UniversityNanjing 210098China

To investigate the presence of metal elements and assess their health risk for the populace in the Nandong Underground River Basin(NURB),we conducted an analysis of eleven common heavy metals in the water body.A Health risk assessment(HRA)model was employed to analyze 84 water samples from the NURB.The detection results revealed the following order of heavy metals concentrations:Fe>Al>Mn>Zn>As>Cd>Pb>Cr>Ni>Cu>Hg.Correlation analysis indicated a certain similarity in material source and migration transformation among these eleven metal elements.Our study identified that the health risks for local residents exposed to metal elements in the water of NURB primarily stem from carcinogenic risk(10^(−6)–10^(−4)a^(−1))through the drinking water pathway.Moreover,the health risk of heavy metal exposure for children through drinking water was notably higher than for adults.The maximum health risks of Cr in both underground and surface water exceeded the recommendation standard(5.0×10^(−5)a^(−1))from ICRP,surpassing the values recommended by the Swedish Environmental Protection Agency,the Dutch Ministry of Construction and Environment and the British Royal Society(5.0×10^(−6)a^(−1)).The results of the health risk assessment indicate that Cr in the water of NURB is the primary source of carcinogenic risk for local residents,followed by Cd and As.Consequently,it is imperative to control these three carcinogenic metals when the water was used as drinking water resource.

关键词： Water Pollution Correlation Analysis Toxicity of heavy Metal Elements Underground River Basin Carcinogenicity Potential

One-step fabrication of mesoporous sulfur-doped carbon nitride for highly selective photocatalytic transformation of native lignin to monophenolic compounds

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Chinese Chemical Letters 2023年第1期34卷 440-445页

作者： Conghao Ku Huiqin Guo Kexin Li Qiong Wu Liushui Yan Key Laboratory of Jiangxi Province for Persistent Pollutants control and resources Recycle Nanchang Hangkong UniversityNanchang 330063China national-local joint engineering research center of heavy metals Pollutants control and resource utilization Nanchang Hangkong UniversityNanchang 330063China Jiangxi Provincial Experimental Teaching Demonstration center of Environmental Science and engineering Nanchang Hangkong UniversityNanchang 330063China

Photocatalytic selective transform native lignin into valuable chemicals is an attractive but challenging task.Herein,we report a mesoporous sulfur-doped carbon nitride(MSCN-0.5)which is prepared by a facile one-step thermal condensation strategy.It is highly active and selective for the cleavage Cα-Cβbond inβ-O-4 lignin model compound under visible light radiation at room temperature,achieving 99%substrate conversion and 98%Cα-Cβbond cleavage selectivity.Mechanistic studies revealed that the Cβ-H bond of lignin model compounds activated by holes and generate key Cβradical intermediates,further induced the Cα-Cβbond cleavage by superoxide anion radicals(·O2-)to produce aromatic oxygenates.Waste Camellia oleifera shell(WCOS)was taken as a representative to further understand the reaction mechanisms on native lignin.33.2 mg of monophenolic compounds(Vanillin accounted for 22%and Syringaldehyde for 34%)can be obtained by each gram of WCOS lignin,which is 2.5 times as that of the pristine carbon nitride.The present work offers useful guidance for designing metal-free heterogeneous photocatalysts for Cα-Cβbond cleavage to harvest monophenolic compounds.

关键词： Mesostructure Sulfur-doped carbon nitride Photocatalysis Lignin model compound Native lignin Monophenolic compounds

基于文献回顾的有色金属冶炼废渣的特征、资源化途径及其安全利用评价

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Journal of Central South University 2024年第4期31卷 1178-1196页

作者：徐则林姚佳斌付融冰 Centre for Environmental Risk Management and Remediation of Soil and Groundwater Tongji UniversityShanghai 200092China State Key Laboratory of Pollution control and resource Reuse College of Environmental Science and EngineeringTongji UniversityShanghai 200092China Shanghai Institute of Pollution control and Ecological Security Shanghai 200092China

冶炼废渣作为冶炼过程中产生的工业副产物,由于其缺乏安全、合理的防护和管理措施可能导致环境问题。通过全面分析近年来发表的相关文献,本文对有色金属冶炼废渣的特性、资源化利用途径及安全利用评价等方面的最新研究进展进行了介绍。... 详细信息

冶炼废渣作为冶炼过程中产生的工业副产物,由于其缺乏安全、合理的防护和管理措施可能导致环境问题。通过全面分析近年来发表的相关文献,本文对有色金属冶炼废渣的特性、资源化利用途径及安全利用评价等方面的最新研究进展进行了介绍。研究结果表明,不同的原生精矿、冶炼条件和冶炼类型决定了冶炼废渣的化学和矿物学特征。此外,冶炼废渣在各种资源化利用中表现出极高的灵活性,不仅可以用于金属回收和建筑材料,还可以作为农业肥料和修复剂。同时,本文强调了在各种利用情景下对废渣进行安全性评估的重要性,以降低其潜在环境风险。此外,本文还强调了未来的研究方向,包括建立一种综合且量化的土渣混合体中重金属环境风险评价方法,以及探索更多创新的冶炼废渣资源化利用方法。综上所述,本文对于推动冶炼废渣在环境保护和资源可持续利用方面的研究有重要意义。

关键词：冶炼废渣有色金属废渣特征资源化利用途径安全利用评价

Metal-center effect induced efficient charge transfer of metal-organic framework for strengthening Sb(Ⅴ)capture performance

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Nano research 2022年第9期15卷 8516-8523页

作者： Deng You Hui Shi Mingming Peng Liming Yang Penghui Shao Kai Yin Haozhi Wang Shenglian Luo Xubiao Luo State Key Laboratory of Chemo/Biosensing and Chemometrics Hunan UniversityChangsha 410082China Key Laboratory of Jiangxi Province for Persistent Pollutants control and resources Recycle Nanchang Hangkong UniversityNanchang 330063China national-local joint engineering research center of heavy metals Pollutants control and resource utilization Nanchang Hangkong UniversityNanchang 330063China Key Laboratory of Advanced Ceramics and Machining Technology(Ministry of Education) School of Materials Science and EngineeringTianjin UniversityTianjin 300072China

The adsorbents–adsorbates interaction is critical for resourcelization in heavy metal wastewater treatment.Nevertheless,it is still indistinct to depict the impact of metal center effect on heavy metals removal performance in metal-organic frameworks(MOFs)-based adsorbents.Herein,a series of MOFs with different metal centers of Mg(II),La(III),and Zr(IV)are rationally designed,and the effect of electronic structure on the Sb(V)removal performance is systematically investigated.The obtained La-MGs achieve Sb(V)adsorption capacity of 897.6 mg/g,which is about 1.2 and 4.5 times above average than those of Zr-MGs and Mg-MGs,respectively.On account of more edge adsorption sites achieve,the sites utilization efficiency of La-MGs(92.1%)is much better than Zr-MGs(75.0%)and Mg-MGs(20.4%).Furthermore,density functional theory(DFT)calculations reveal that La-MGs are more active than Mg-MGs and Zr-MGs,owing to the lower adsorption energy,higher charge transfer,and stronger bonding interaction,which will promote the Sb(V)removal performance.The experimental results in practical water indicate that La-MGs effectively capture antimony at low concentration,reaching drinking water standard in samples from Ganjiang River.This study opens an avenue for atomic-level insight into high-efficient absorbents design for water treatment from electronic structuremodification of active centers.

关键词： metal-organic frameworks metal center effect electronic structure theoretical calculation Sb(V)removal

Regeneration and reuse of anode graphite from spent lithium-ion batteries with low greenhouse gas (GHG) emissions

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Chinese Chemical Letters 2023年第10期34卷 111-115页

作者： Junjie Liu Hui Shi Ke Yu Yanni Geng Xingyu Hu Genping Yi Jianzhi Zhang Xubiao Luo national-local joint engineering research center of heavy metals Pollutants control and resource utilization Nanchang Hangkong UniversityNanchang 330063China Key Laboratory of Jiangxi Province for Persistent Pollutants control and resources Recycle Nanchang Hangkong UniversityNanchang 330063China School of Environment and Energy Shenzhen Graduate SchoolPeking UniversityShenzhen 518055China State Key Lab of Urban Water resource and Environment School of Civil and Environmental EngineeringHarbin Institute of Technology ShenzhenShenzhen 518055China

Regenerating spent graphite(SG)from retired lithium-ion batteries(LIBs)can effectively avoid resource waste.However,the technology is challenged by the impurity content and energy consumption.In this study,micro-expanded graphite(MEG)was synthesized by one-step oxidation method using waste LIBs anode graphite as material and perchloric acid as intercalation and oxidant agent.Then,its performance as a LIBs anode material were investigated as well as the greenhouse gas(GHG)emissions of the whole process were calculated.Perchloric acid was successfully embedded in the SG during the reaction,which effectively removed the impurities in the graphite.Defects introduced during intercalation and delamination,such as nanopores and intercrystalline cracks.Both provide additional space for Li ions during charging and discharging,thereby promoting capacity enhancement.The prepared MEG expresses a rate capability as high as 340.32 m Ah/g at a current density of 0.1 C and still retains 81.73%of the capacity after 100 cycles at a current density of 1 C.Additionally,the GHG emissions of the synthesis process of this article and other literatures are compared.The results demonstrated that perchloric acid treatment process provides a low-carbon,time-and energy-saving approach for regenerated SG as battery grade material.

关键词： Spent graphite Retired lithium-ion batteries Greenhouse gas emissions Regenerated Perchloric acid Micro-expanded graphite

Application of UiO-66 and its composites for remediation and resource recovery of typical environmental contaminants:a review

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Rare metals 2024年第6期43卷 2498-2526页

作者： Hui-Min Zhang Yun-Long Wang Xin-Feng Zhu Zhen-Zhen Huang Dan-Dan Pang Kai Wang Chao-Hai Wang Zhong-Xian Song Shi-Qiang Yin Lin-Lin Chang Jin-Hui Zhang School Infirmary Henan University of Urban Construction Faculty of Environmental and Municipal engineering Henan Key Laboratory of Water Pollution Control and Rehabilitation TechnologyKey Laboratory of Carbon Emission Reduction and Combined Air Pollution Control TechnologyHenan University of Urban Construction School of resources & Environment Collaborative Innovation Center of Coalbed Methane and Shale Gas for Central Plains Economic RegionHenan Polytechnic University The Key Lab of Pollution control and Ecosystem Restoration in Industry Clusters Ministry of EducationGuangzhou Higher Education Mega CentreSouth China University of Technology

UiO-66 series metal-organic framework materials（MOFs） are typical porous materials assembled by Zr4+with a large mass-to-nucleus ratio and terephthalic acid ligands,which form tetrahedral and octahedral cages arranged in a periodic triangular window pattern.Due to the strong interaction between Zr and O,UiO-66 series MOFs exhibit high thermal stability,structural stability,and chemical stability.This article mainly reviews the applications of UiO-66 and its composites in adsorption,photocatalysis,and resource utilization,while exploring the harm of pollutants to human health and the environment.In the first part,the differences in adsorption and removal mechanisms of liquid organic pollutants,heavy metals,and volatile organic compounds（VOCs） are investigated.The results show that organic pollutants are mainly removed by physical adsorption,electrostatic interactions,hydrogen bonding,and π-π interactions,while heavy metals are mainly removed by chemical adsorption,electrostatic interactions,reduction,and chelation.VOCs are mainly removed by the pore volume and pore size structure of the material.Heterojunction catalysis can achieve non-toxic treatment of pollutants,and this study mainly focuses on UiO-based composite materials constructed by strategies such as semiconductor composites,ion doping,and metal/dye encapsulation.In the second part,the synergistic effect between the components of UiO-based composite materials promotes the oriented and rapid separation and transfer of earriers at the material interface,thereby promoting the generation of active species such as h+,·O2-and ·OH,and achieving rapid degradation of pollutants and detoxification of heavy metals.In the third part,heterojunctions can realize the resource utilization of pollutants in water and air,producing energy-type substances such as hydrogen and methanol while solving environmental problems.In addition,this article also summarizes the harm of common typical pollutants to the environment and human health.Finally,the development prospects and un

关键词： UiO Adsorption Photocatalysis Environmental pollution resource recovery