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Progress of gaseous arsenic removal from flue gas by adsorption:Experimental and theoretical calculations

Journal of Environmental Sciences 2024年第2期136卷 470-485页

作者： Xuelei Yan qingzhu li Xiaowei Huang Bensheng li Shengtu li Qingwei Wang School of Metallurgy and Environment Central South UniversityChangsha 410083China National Engineering Research Centre for Control and Treatment of Heavy Metal Pollution Central South UniversityChangsha 410083China National Engineering Research Center for Rare Earth Materials General Research Institute for Non-Ferrous MetalsBeijing 100088China

Because of its high mobility and difficult capture,gaseous arsenic pollution control has become the focus of arsenic pollution *** mainly exists in the form of highly toxic As_(2)O_(3)in the flue ***,removing gaseous As_(2)O_(3)from flue gas is of great practical significance for arsenic pollution *** gaseous As_(2)O_(3)on the surface of adsorbents by physical or chemical adsorption is an effective way to reduce the content of arsenic in the flue gas and alleviate arsenic *** the past few decades,various adsorbents have been developed to capture gaseous As_(2)O_(3)in the flue gas,and their adsorption mechanisms have been studied in ***,it is necessary to review the strategies of arsenic removal from flue gas by adsorption,which can inspire further *** on summarizing the morphological distribution of gaseous As_(2)O_(3)in the flue gas,this review further summarizes the removal of gaseous As_(2)O_(3)by several adsorbents and the effect of temperature and the main components of the flue gas on arsenic *** addition,the mechanism of arsenic removal based on adsorption in the flue gas is discussed in depth through theoretical calculations,which is the particular focus of this ***,prospects based on the present research state of arsenic removal by adsorption are proposed to provide ideas for developing effective and stable adsorbents for arsenic removal from flue gas.

关键词： Gaseous arsenic Flue gas Adsorption Theoretical calculation Mechanism

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Nanosize-effect on the distribution of heavy metals in copper smelting dust:Based on sophisticated dust sorting approach

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Nano Research 2024年第1期17卷 312-320页

作者： Ken li Zuwu liao Hengdi Ye qingzhu li Fenghua Shen Qian li Hui liu Qingwei Wang Xu Yan Zhang lin liyuan Chai School of Metallurgy and Environment Central South UniversityChangsha 410083China Chinese National Engineering Research Center for Control&Treatment of Heavy Metal Pollution Changsha 410083China National Engineering Research Center of Sintering and Pelletizing Equipment System Zhongye Changtian International Engineering Co.LtdChangsha 410205China

Dust particles emitted from smelters can be hazardous to ecosystems and humans,as they are often enriched in metallic ***,we combined multi-method mineralogical analysis with a sophisticated size sorting approach for copper smelting dust to study the nanosize-effect on heavy metal distribution,which has hitherto been *** types of dust were collected from a copper flash smelter and then size-sorted using a Dekati low-pressure *** showed that all three samples could easily sort out nanoscale dust particles(likely to occur when polycrystalline particles are formed.

关键词： copper flue dust size-sorted heavy metal distribution morphology nano-sized effects

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A review on the transformation of birnessite in the environment:Implication for the stabilization of heavy metals

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Journal of Environmental Sciences 2024年第5期139卷 496-515页

作者： Miao Shi qingzhu li Qingwei Wang Xuelei Yan Bensheng li linhai Feng Chao Wu Rongrong Qiu Hongkai Zhang Zhihui Yang Weichun Yang Qi liao liyuan Chai School of Metallurgy and Environment Central South UniversityChangsha 410083China National Engineering Research Centre for Control and Treatment ofHeavy Metal Pollution Central South UniversityChangsha 410083China Water Pollution Control Technology Key Lab of Hunan Province Changsha 410083China

Birnessite is ubiquitous in the natural environment where heavy metals are retained and easily *** surface properties and structure of birnessite change with the changes in external environmental conditions,which also affects the fate of heavy *** the effect and mechanism of the birnessite phase transition process on heavy metals is the key to taking effective measures to prevent and control heavy metal ***,the four transformation pathways of birnessite are summarized first in this ***,the relationship between transformation pathways and environmental conditions is *** relevant environmental conditions include abiotic(e.g.,co-existing ions,pH,oxygen pressure,temperature,electric field,light,aging,pressure)and biotic factors(e.g.,microorganisms,biomolecules).The phase transformation is achieved by the key intermediate of Mn(Ⅲ)through interlayer-condensation,folding,neutralizationdisproportionation,and dissolution-recrystallization *** AOS(average oxidation state)of Mn and interlayer spacing are closely correlated with the phase transformation of *** but not least,the mechanisms of heavy metals immobilization in the transformation process of birnessite are summed *** involve isomorphous substitution,redox,complexation,hydration/dehydration,*** transformation of birnessite and its implication on heavy metals will be helpful for understanding and predicting the behavior of heavy metals and the crucial phase of manganese oxides/hydroxides in natural and engineered environments.

关键词： Birnessite Transformation Heavy metals Pathways Mechanism

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The determinants of effective defluorination by the liAl-LDHs

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Journal of Environmental Sciences 2023年第4期126卷 153-162页

作者： Kaizhong li Hui liu Shuimei li qingzhu li Shengtu li Qingwei Wang School of Metallurgy and Environment Central South UniversityChangsha 410083China Chinese National Engineering Research Center for Control&Treatment of Heavy Metal Pollution Changsha 410083China Water Pollution Control Technology Key Lab of Hunan Province Changsha 410004China

Millions of people in poor areas are still under the threat of fluoride *** to effectively separate fluorine in water is an important step to reduce the ecological *** this paper,we performed a systematic DFT calculation focused on the defluorination behavior between the liAl-and *** results indicated that the liAl-LDHs exhibited high chemical activity before the defluorination,because of the better electronic *** the defluorination,the liAl-LDHs with adsorbed-F–were also more stable than the *** addition,the existence of coordination covalent bond for the adsorbed-F–attached to the liAl-LDHs was *** is an important reason for the high defluorination efficiency by the *** addition,a series of weak interaction,including hydrogen bond and van der Waals interaction were also ***,a liAl-LDHs with excellent fluoride removal properties were synthesized well by simple hydrothermal *** results showed that our synthesized liAl-LDHs with the capacity of 156.09 mg/g,could be effectively defluorinated in ***,it surpasses most materials and has potential applications.

关键词： Efficient Defluorination Water treatment LDHs DFT

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The role of doped-Mn on enhancing arsenic removal by MgAl-LDHs

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Journal of Environmental Sciences 2022年第10期34卷 125-134页

作者： Kaizhong li Hui liu qingzhu li Wenming Yao LanyanWu Shuimei li Qingwei Wang School of Metallurgy and Environment Central South UniversityChangsha 410083China Chinese National Engineering Research Center for Control&Treatment of Heavy Metal Pollution Changsha 410083China Water Pollution Control Technology Key Lab of Hunan Province Changsha 410004China

To meet the challenges posed by global arsenic water contamination, the Mg Al Mn-LDHs with extraordinary efficiency of arsenate removal was developed. In order to clarify the enhancement effect of the doped-Mn on the arsenate removal performance of the LDHs, the cluster models of the Mg Al Mn-LDHs and Mg Al-LDHs were established and calculated by using density functional theory(DFT). The results shown that the doped-Mn can significantly change the electronic structure of the LDHs and improve its chemical activity. Compared with the Mg Al-LDHs that without the doped-Mn, the HOMO-LUMO gap was smaller after doping. In addition, the-OH and Al on the laminates were also activated to improve the adsorption property of the LDHs. Besides, the doped-Mn existed as a novel active site. On the other hand, the Mg Al Mn-LDHs with the doped-Mn, the increased of the binding energy, as well as the decreased of the ion exchange energy of interlayer Cl^(-), making the ability to arsenate removal had been considerably elevated than the Mg Al-LDHs. Furthermore, there is an obvious coordination covalent bond between arsenate and the laminates of the Mg Al MnLDHs that with the doped-Mn.

关键词： Mechanism Arsenate removal Mn LDHs DFT

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基于定量CT分析2型糖尿病患者腹部脂肪含量与骨密度相关性研究

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皖南医学院学报 2024年第1期43卷 52-55页

作者：李庆祝张倩何春玲翟建皖南医学院第一附属医院弋矶山医院医学影像中心安徽芜湖241001 皖南医学院第一附属医院弋矶山医院内分泌科安徽芜湖241001

目的:应用定量CT(QCT)研究2型糖尿病(T2DM)患者腹部脂肪含量与骨密度(BMD)的相关性。方法:回顾性分析弋矶山医院2019年7月~2022年11月临床确诊的T2DM患者268例,统计患者的性别、年龄、病程、体质量指数(BMI)、糖化血红蛋白(HbA1c)、尿... 详细信息

目的:应用定量CT(QCT)研究2型糖尿病(T2DM)患者腹部脂肪含量与骨密度(BMD)的相关性。方法:回顾性分析弋矶山医院2019年7月~2022年11月临床确诊的T2DM患者268例,统计患者的性别、年龄、病程、体质量指数(BMI)、糖化血红蛋白(HbA1c)、尿白蛋白与肌酐比值(UACR)等资料。参考美国糖尿病协会(ADA)预防和控制糖尿病肾病的临床建议,根据UACR将糖尿病患者分为A组(无蛋白尿,123例)、B组(微量蛋白尿,84例)、C组(大量蛋白尿,61例),运用QCT分别测量3组患者L 3椎体层面的内脏脂肪(VAT)、皮下脂肪(SAT)以及L 1~2椎体平均骨密度(avBMD)。采用单因素方差分析(ANOVA)或秩和检验比较各组间各参数差异性,用Pearson相关分析BMD与VAT之间的相关性。结果:3组T2DM患者的VAT含量均依次增高,BMD含量均依次下降,差异均有统计学意义(P0.05);相关分析显示,T2DM患者BMD与VAT含量呈负相关(r=-0.496,P<0.001)。结论:QCT能够反映T2DM患者腹部脂肪分布及BMD的变化情况,能为T2DM肾病早期预防、病程发展提供参考依据。

关键词：定量CT 2型糖尿病内脏脂肪皮下脂肪骨密度

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输电线路架设用导线提升装置设计分析

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电力设备管理 2024年第12期 274-276页

作者：李青竹樊汝岩马亚南国网山东省电力公司冠县供电公司

随着我国社会经济的不断发展,我国国民的经济水平有了显著的提高。人们逐渐追求更高品质的生活,导致其对用电的需求呈现多元化趋势。电网也因此发挥出了越来越重要的作用,通过输电线路架设用导线提升装置设计,能够将更多的新技术与新工... 详细信息

随着我国社会经济的不断发展,我国国民的经济水平有了显著的提高。人们逐渐追求更高品质的生活,导致其对用电的需求呈现多元化趋势。电网也因此发挥出了越来越重要的作用,通过输电线路架设用导线提升装置设计,能够将更多的新技术与新工艺应用到线路的结构设计当中,从而进一步增强输电线路的稳定性与经济性。本文概括了输电线路架设的步骤和输电线路架设用导线提升装置设计的必要性,并从多方面阐述了相应的有效策略,供同行参考。

关键词：输电线路架设导线装置设计

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Systematic control technologies for gaseous pollutants from non-ferrous metallurgy

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Journal of Environmental Sciences 2023年第1期123卷 65-82页

作者： Hui liu Fenghua Shen qingzhu li Minneng Wen Hongliang Zhang linhua Jiang Chenghang Zheng Yan liu Tao liu liyuan Chai School of Metallurgy and Environment Central South UniversityChangsha 410083China Chinese National Engineering Research Center for Control&Treatment of Heavy Metal Pollution Changsha 410083China State Key Joint Laboratory of Environmental Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China College of Environmental Science and Engineering Tongji UniversityShanghai 200092China State Key Lab of Clean Energy Utilization State Environmental Protection Engineering Center for Coal-Fired Air Pollution ControlZhejiang UniversityHangzhou 310027China Key Laboratory of Ecological Metallurgy of Multi-metal Intergrown Ores of Ministry of Education School of MetallurgyNortheastern UniversityShenyang 110819China School of Resource and Environmental Engineering Wuhan University of Science and TechnologyWuhan 430081China

Air pollutant emissions represent a critical challenge in the green development of the non-ferrous metallurgy *** work studied the emission characteristics,formation mechanisms,phase transformation and separation of typical air pollutants,such as heavy metal particles,mercury,sulfur oxides and fluoride,during non-ferrous smelting.A series of purification technologies,including optimization of the furnace throat and hightemperature discharge,were developed to collaboratively control and recover fine particles from the flue gas of heavy metal smelting processes,including copper,lead and *** improvements have been realized in wet scrubbing technology for removing mercury,fluoride and SO_(2)from flue ***-liquid sulfidation technology by applying H_(2)S was invented to recycle the acid scrubbing wastewater more efficiently and in an eco-friendly *** on digital technology,a source reduction method was designed for sulfur and fluoride control during the whole aluminum electrolysis *** desulfurization technologies were developed for catalytic reduction of the sulfur content in petroleum coke at low temperature and catalytic reduction of SO_(2)to elemental *** work has established the technology for coupling multi-pollutant control and resource recovery from the flue gas from non-ferrous metallurgy,which provides the scientific theoretical basis and application technology for the treatment of air pollutants in the non-ferrous metallurgy industry.

关键词： Non-ferrous smelting Gaseous pollutant Flue gas purification Acid wastewater Heavy metal

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基于BSA-seq技术对西瓜抗枯萎病生理小种1的基因定位

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上海农业学报 2024年第2期40卷 11-19页

作者：李超汉朱丽华尤佳琪杨红娟李青竹宋荣浩顾卫红上海市农业科学院设施园艺研究所上海市设施园艺技术重点实验室上海201403 上海市农业科学院林木果树研究所上海201403 上海市农业科学院生态环境保护研究所上海201403

西瓜枯萎病是由尖孢镰刀菌西瓜专化型(Fusarium oxysporum ***)引起的土传真菌病害,是西瓜生产的限制因子。本研究以西瓜抗病种质“V13-9-3”和感病种质“W16-1”为亲本,构建了“W16-1”×“V13-9-3”的F1、F2群体。苗期人工接种结果显... 详细信息

西瓜枯萎病是由尖孢镰刀菌西瓜专化型(Fusarium oxysporum ***)引起的土传真菌病害,是西瓜生产的限制因子。本研究以西瓜抗病种质“V13-9-3”和感病种质“W16-1”为亲本,构建了“W16-1”×“V13-9-3”的F1、F2群体。苗期人工接种结果显示:F1植株表现抗病,F2群体的抗病∶感病分离比为3∶1,表明西瓜枯萎病生理小种1的抗性遗传受显性单基因控制。利用BSA技术,采用SNP指数和InDel指数法,将西瓜抗枯萎病基因Fon-1定位在1号染色体上2.20 Mb和2.32 Mb区域内,将这2种方法的定位结果取交集,最终将目标抗病基因区域缩小在2.20 Mb之内,该区域包含8个非同义突变基因和1个移码突变基因。利用荧光定量PCR检测这9个突变基因在接种枯萎病菌5 d和10 d后的表达量变化,发现抗病亲本“V13-9-3”中有7个基因的表达量显著高于感病亲本“W16-1”。研究通过结合SNP指数和InDel指数分析可以快速进行基因初定位,为西瓜抗枯萎病的分子机理研究提供理论依据。

关键词：西瓜枯萎病抗枯萎病基因基因定位 SNP指数 InDel指数

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新能源汽车关键有色金属提取与回收技术发展分析

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现代交通与冶金材料 2024年第1期4卷 3-10页

作者：覃牧川梁彦杰李青竹柯勇彭聪朱志华白帮伟柴立元中南大学冶金与环境学院湖南长沙410083 有色金属强化冶金新技术全国重点实验室湖南长沙410083 国家重金属污染防治工程技术研究中心湖南长沙410083 中信戴卡股份有限公司河北秦皇岛066000

低碳节能化、轻量化与高速化成为汽车发展的主要趋势,新能源汽车成为当代汽车发展的主流。随着中国新能源汽车产业的爆发式增长,锂、镍、钴、铝等金属需求量激增,新能源金属的高效绿色生产、新能源汽车二次资源回收将会对中国有色行业... 详细信息

低碳节能化、轻量化与高速化成为汽车发展的主要趋势,新能源汽车成为当代汽车发展的主流。随着中国新能源汽车产业的爆发式增长,锂、镍、钴、铝等金属需求量激增,新能源金属的高效绿色生产、新能源汽车二次资源回收将会对中国有色行业绿色发展带来深远影响。本文针对锂资源高效绿色化提取技术,退役电池有价金属分离回收,铝合金汽车零部件除杂再生等关键技术进行介绍,分析未来新能源汽车产业发展对中国有色行业的影响。

关键词：新能源汽车锂离子电池再生铝有价金属再生资源

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