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Remediation of Heavy Metal-Polluted Agricultural Soils Using Clay Minerals： A Review

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Pedosphere 2017年第2期27卷 193-204页

作者： xu Yi LIANG xuefeng xu yingming QIN xu HUANG Qingqing WANG Lin SUN Yuebing College of Resources and Environment Hunan Agricultural University Changsha 410128 (China) Innovation Team of Remediation of Heavy Metal-Contaminated Farmlands Agro-Environmental Protection Institute Ministry of Agriculture Tianjin 300191 (China) Key Laboratory of Original Environmental Quality of MOA/ZTianjin Key Laboratory of Agro-Environment and Agro-Product Safety Tianjin 300191 (China)

Heavy metal contamination of agricultural soils poses risks and hazards to humans. The remediation of heavy metal-polluted soils has become a hot topic in environmental science and engineering. In this review, the application of clay minerals for the remediation of heavy metal-polluted agricultural soils is summarized, in terms of their remediation effects and mechanisms, influencing factors, and future focus. Typical clay minerals, natural sepiolite, palygorskite, and bentonite, have been widely utilized for the in-situ immobilization of heavy metals in soils, especially Cd-polluted paddy soils and wastewater-irrigated farmland soils. Clay minerals are able to increase soil pH, decrease the chemical-extractable fractions and bioavailability of heavy metals in soils, and reduce the heavy metal contents in edible parts of plants. The immobilization effects have been confirmed in field-scale demonstrations and pot trials. Clay minerals can improve the environmental quality of soils and alleviate the hazards of heavy metals to plants. As main factors affecting the immobilization effects, the pH and water condition of soils have drawn academic attention. The remediation mechanisms mainly include liming, precipitation, and sorption effects. However, the molecular mechanisms of microscopic immobilization are unclear. F^ture studies should focus on the long-term stability and improvement of clay minerals in order to obtain a better remediation effect.

关键词： bentonite bioavailability immobilization liming effect palygorskite sepiolite soil pH

Effects of sepiolite on stabilization remediation of heavy metal-contaminated soil and its ecological evaluation

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Frontiers of Environmental Science & Engineering 2016年第1期10卷 85-92页

作者： Yuebing SUN Dan ZHAO yingming xu Lin WANG xuefeng LIANG Yue SHEN Key Laboratory of Original Environmental Quality Ministry of Agriculture/Tianjin Key Laboratory of Agro-Environment and Ago-Product Safety Institute of Agro-Environmental Protection Ministry of Agriculture Tianjin 300191 China College of Resources and Environmental Sciences Henan Agricultural University Zhengzhou 450002 China

Stabilization in the remediation of heavy metal contaminated soils has been gaining prominence because of its cost-effectiveness and rapid implementation. In this study, microbial properties such as microbial community and enzyme activities, chemical properties such as soil pH and metal fraction, and heavy metal accumulation in spinach （Spinacia oleracea） were considered in assessing stabilization remediation effectiveness using sepiolite. Results showed that soil pH values increased with rising sepiolite concentration. Sequential extraction results indi- cated that the addition of sepiolite converted significant amounts of exchangeable fraction of Cd and Pb into residual form. Treatments of sepiolite were observed to reduce Cd and Pb translocation from the soil to the roots and shoots of spinach. Concentrations of Cd and Pb exhibited 12.6%-51.0% and 11.5%-46.0% reduction for the roots, respectively, and 0.9%-46.2% and 43.0%- 65.8% reduction for the shoots, respectively, compared with the control group. Increase in fungi and actinomycete counts, as well as in catalase activities, indicated that soil metabolic recovery occurred after sepiolite treatments.

关键词： stabilization remediation heavy metals sepio-lite soil quality spinach (Spinacia oleracea)

Spray synthesis of rapid recovery Zno/polyaniline film ammonia sensor at room temperature

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Frontiers of Materials Science 2022年第4期16卷 81-91页

作者： Yingze BAI Xin DONG Chuanyu GUO yingming xu Bin WANG Xiaoli CHENG Key Laboratory of Functional Inorganic Material Chemistry School of Chemistry and Materials ScienceHeilongjiang UniversityHarbin 150080China State Key Laboratory of Optoelectronic Materials and Technologies Key Laboratory for Polymeric Composite and Functional MaterialsSchool of ChemistrySun Yat-sen UniversityGuangzhou 510275China

As an excellent room temperature sensing material,polyaniline(PANI)needs to be further investigated in the field of high sensitivity and sustainable gas sensors due to its long recovery time and difficulty to complete *** ZnO/PANI film with p-n heterogeneous energy levels have successfully prepared by spraying Zno nanorod synthesized by hydrothermal method on the PANI film rapidly synthesized at the gas-liquid *** presence of p-n heterogeneous energy levels enables the ZnO/PANI film to detect 0.1-100 ppm(1 ppm=10^(-6))NH_(3)at room temperature with the response value to 100 ppm NH_(3)doubled(12.96)and the recovery time shortened to 1/5(31.2s).The ability of high response and fast recovery makes the ZnO/PANI filmto be able to detect NH_(3)at room temperature *** provides a new idea for PANI to prepare sustainable room temperature sensor and promotes the development of room temperature sensor in public safety.

关键词： rapid recovery ZnO/polyaniline film ammonia sensor

In situ stabilization remediation of cadmium contaminated soils of wastewater irrigation region using sepiolite

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Journal of Environmental Sciences 2012年第10期24卷 1799-1805页

作者： Yuebing Sun Guohong Sun yingming xu Lin Wang Dasong Lin xuefeng Liang Xin Shi Key Laboratory of Original Environmental Quality Safety Ministry of AgricultureTianjin 300191China Tianjin Key Laboratory of Asro-environment and Agro-product Safety Institute of Agro-Environmental ProtectionMinistry of Agriculture7ianjin 300191China Department of Basic Science lianjin Agricultural UniversityTianjin 300384China College of Environment and Resources Jilin UniversityChangchun 130012China

The effects of immobilization remediation of Cd-contaminated soils using sepiolite on soil pH, enzyme activities and microbial communities, TCLP-Cd （toxicity characteristic leaching procedure-Cd） concentration, and spinach （Spinacia oleracea） growth and Cd uptake and accumulation were investigated. Results showed that the addition of sepiolite could increase soil pH, while the TCLP-Cd concentration in soil was decreased with increasing sepiolite. The changes of soil enzyme activities and bacteria number indicated that a certain metabolic recovery occurred after the sepiolite treatments, and spinach shoot biomass increased by 58.5%-65.5% in comparison with the control group when the concentration of sepiolite was ~ 10 g/kg. However, the Cd concentrations in the shoots and roots of spinach decreased with an increase in the rate of sepiolite, experiencing 38.4%-59.1% and 12.6%--43.6% reduction, respectively, in contrast to the control. The results indicated that sepiolite has the potential for success on a field scale in reducing Cd entry into the food chain.

关键词： Cd-contaminated soil immobilization remediation sepiolite soil quality

A Facile Synthesis of Hierarchically Porous TiO2 Microspheres with Carbonaceous Species for Visible-light Photocatalysis

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Journal of Materials Science & Technology 2017年第1期33卷 39-46页

作者： Weigang Liu yingming xu Wei Zhou Xianfa Zhang Xiaoli Cheng Hui Zhao Shan Gao Lihua Huo Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education School of Chemistry and Materials Science Heilongjiang UniversityHarbin 150080 China

Hierarchically porous anatase Ti02 microspheres composited with carbonaceous species （TCS） have been successfully fabricated by a one-step template-free solvothermal method, combined with subsequent low temperature dried process. In this configuration, the TCS microspheres are constructed by the intercon- nected porous nanosheets, which are further assembled with abundant nanoparticles and carbonaceous species. Such composite microspheres possess a large specific surface area of 337 m2 g-l, uniform mesopores of 3.37 nm and high total pore volumes of 0.275 cm3 g-1. The materials exhibit the enhanced photocatalytic properties and stability for degradation of rhodamine B （RhB） under visible-light irradiation. The enhanced photocatalytic degradation performance may be ascribed to their abundant porous structure, large specific surface area and the unique assist-function of the carbonaceous species.

关键词： TiO2 Porous materials Microspheres Nauostructure Photocatalytic properties

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浙江省甘薯生产现状与发展对策

浙江农业科学 2024年第4期65卷 745-748页

作者：许庭徐英明彭啸天叶乔哲汤郑豪朱镕一王晓敏丽水市遂昌县柘岱口乡人民政府浙江丽水323318 浙江农林大学现代农学院浙江杭州311300

甘薯是重要的粮食、饲料、工业原料及新能源作物,也是助力乡村振兴和农业农村现代化的优势作物。浙江省是长江中下游主要的甘薯生产区。文章总结了浙江省甘薯产业生产现状,在此基础上,进一步分析了浙江省甘薯发展中品种更新迭代缓慢、... 详细信息

甘薯是重要的粮食、饲料、工业原料及新能源作物,也是助力乡村振兴和农业农村现代化的优势作物。浙江省是长江中下游主要的甘薯生产区。文章总结了浙江省甘薯产业生产现状,在此基础上,进一步分析了浙江省甘薯发展中品种更新迭代缓慢、脱毒苗技术普及率低、生产机械化发展不平衡等问题,并提出了相应的发展策略,以期为浙江省甘薯产业高质量发展提供参考。

关键词：甘薯浙江省生产现状发展策略

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CHINA RAILWAY EXPRESS TO EUROPE: IMPLICATIONS TO CHINA-EU ECONOMIC GEOGRAPHY AND PROSPECTS

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Contemporary World 2020年第3期 37-40页

作者： xu yingming LI XIN Chinese Academy of International Trade and Economic Cooperation MOFCOM School of Marxism Tianjin Normal University

As an important project for closer infrastructure and trade connectivity between China and countries along the Belt and Road,the China Railway Express (CRE) has become a highlight of Belt and Road *** its debut nine years ago,its number of destinations and services have grown *** the end of 2019,it had connected 62 Chinese cities with over 110 cities in Eurasia.

关键词： closer services EXPRESS

Single-shot ultrafast multiplexed coherent diffraction imaging

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Photonics Research 2022年第8期10卷 1937-1946页

作者： yingming xu XINGCHEN PAN MINGYING SUN WENFENG LIU CHENG LIU JIANQIANG ZHU Key Laboratory of High Power Laser and Physics Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800China National Laboratory on High Power Laser and Physics China Academy of Engineering PhysicsChinese Academy of SciencesShanghai 201800China University of Chinese Academy of Sciences Beijing 100049China

Classic interferometry was commonly adopted to realize ultrafast phase imaging using pulsed lasers;however, the reference beam required makes the optical structure of the imaging system very complex, and high temporal resolution was reached by sacrificing spatial resolution. This study presents a type of single-shot ultrafast multiplexed coherent diffraction imaging technique to realize ultrafast phase imaging with both high spatial and temporal resolutions using a simple optical setup, and temporal resolution of nanosecond to femtosecond scale can be realized using lasers of different pulse durations. This technique applies a multiplexed algorithm to avoid the data division in space domain or frequency domain and greatly improves the spatial resolution. The advantages of this proposed technique on both the simple optical structure and high image quality were demonstrated by imaging the generation and evaluating the laser-induced damage and accompanying phenomenon of laser filament and shock wave at a spatial resolution better than 6.96 μm and a temporal resolution better than 10 ns.

关键词： coherent resolution diffraction

土壤施用钝化剂与复合微生物肥对冬小麦镉积累的影响

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中国农业科学 2024年第1期57卷 126-141页

作者：王宇宋一凡张荣牟海萌孙丽芳付凯霞武紫君黄青青徐应明李鸽子王永华郭天财河南农业大学农学院/国家小麦工程技术研究中心农业农村部环境保护科研监测所/农业农村部产地环境污染防控重点实验室河南粮食作物协同创新中心

【目的】研究土壤施用钝化剂与复合微生物肥对豫北轻度镉污染弱碱性农田土壤中镉活性的钝化效果，及其对冬小麦品种不同器官间镉积累转运和产量的影响特征，旨在筛选出高效修复镉污染土壤、降低冬小麦籽粒镉含量的修复材料及低镉积累小... 详细信息

【目的】研究土壤施用钝化剂与复合微生物肥对豫北轻度镉污染弱碱性农田土壤中镉活性的钝化效果，及其对冬小麦品种不同器官间镉积累转运和产量的影响特征，旨在筛选出高效修复镉污染土壤、降低冬小麦籽粒镉含量的修复材料及低镉积累小麦品种，为豫北镉轻度污染弱碱性农田的小麦安全高效生产提供技术支撑。【方法】于2020—2022年连续两个冬小麦生长季，在豫北镉污染弱碱性农田设置不同土壤修复材料(CK：不进行土壤修复处理，CMF：复合微生物肥单施处理，GP：土壤钝化剂单施处理，CMF+GP：复合微生物肥和土壤钝化剂等量配施处理)和6个冬小麦品种(鑫华麦818、漯麦163、郑麦9023、鑫麦296、郑麦136、郑麦7698)的两因素裂区田间大区对比试验，研究土壤有效态镉、冬小麦地上部各器官镉含量、富集系数(BCF)、转运系数(TF)及其相关性、冬小麦产量及其构成因素的变化。【结果】(1)在连续两年冬小麦生长季，与CK相比，钝化剂和复合微生物肥的单施和等量配施均可降低土壤有效态镉含量，CMF+GP处理的效果最好，可使6个供试品种的根系表层土壤有效态镉含量显著降低17.6%—22.4%。土壤有效态镉含量降低与冬小麦地上部各器官镉含量的变化具有相关性，且不同品种的同一器官间也存在一定差异。(2)土壤钝化剂和复合微生物肥单施和等量配施可使鑫华麦818、漯麦163、郑麦9023降低TF茎鞘—叶、TF茎鞘—籽粒，增大TF(茎鞘—(穗轴+颖壳))、TF(叶—(穗轴+颖壳))，使BCF茎鞘、BCF叶降低、使小麦体内镉含量向穗轴+颖壳转移，以减小BCF籽粒，与之不同的是，未能有效降低鑫麦296的TF茎鞘—叶、BCF茎鞘，增大了郑麦136、郑麦7698的BCF茎鞘。(3)土壤施用钝化剂和复合微生物肥可综合调控冬小麦穗数、穗粒数、千粒重，提高冬小麦产量，但土壤修复处理与品种的方差分析结果表明两者的交互作用主要是通过调控穗数实现增产。CMF+GP处理中郑麦136连续两个冬小麦生长季的产量均为当季所有处理最高值，分别为7 317.17和10 485.32 kg·hm-2。【结论】施用复合微生物肥和土壤钝化剂可降低豫北弱碱性轻度镉污染麦田冬小麦根际土壤有效态镉含量，调控冬小麦各器官对土壤镉的富集系数及各器官转运系数。复合微生物肥和土壤钝化剂等量配施处理优于单施处理，可最大程度降低冬小麦籽粒镉含量，并显著提高参试冬小麦品种产量，且与本试验筛选出的低镉积累高产品种郑麦136搭配种植模式，可实现豫北弱碱性镉污染农田冬小麦的高产栽培与安全生产。

关键词：冬小麦土壤镉污染土壤镉钝化剂复合微生物肥镉富集系数镉转运系数石灰性潮土