作者： 杜露;李璐;李芸;傅晓华

期刊： 广东化工,2021年48(11):213-214 ISSN：1007-1865

作者机构： 中南林业科技大学环境科学与工程学院,湖南长沙410000;[杜露; 傅晓华; 李璐; 李芸] 中南林业科技大学

关键词： 理论知识;课后反思;环境微生物学;教学改革;实践与运用

摘要： 《环境微生物学》以微生物学的理论与技术实践为基础,研究了有关环境现象,环境质量及其他环境问题,与其他各门学科相互影响,彼此渗透,互为补充。本文针对在传统教学过程中产生课堂理论知识无法与现实生活中的实际应用相结合,在实践过程中无法熟练运用课堂中学习到的知识等问题,提出引入课程反思的改革方式,通过教学改革提升学生专业认知、知识理解层次,以及找准专业定位是推进环境生态工程专业健康、快速发展的关键问题。

语种： 中文

作者： Wang, Ying;Mamat, Xamxikamar*;Li, Yongtao*;Hu, Xun;Wang, Ping;...

期刊： Electroanalysis,2019年31(7):1390-1400 ISSN：1040-0397

通讯作者： Mamat, Xamxikamar;Li, Yongtao;Hu, Guangzhi

作者机构： [Li, Yongtao; Mamat, Xamxikamar; Mamat, X; Hu, Guangzhi; Wang, Ying] Chinese Acad Sci, Key Lab Chem Plant Resources Arid Reg, State Key Lab Basis Xinjiang Indigenous Med Plant, Xinjiang Tech Inst Phys & Chem, Urumqi 830011, Peoples R China.;[Hu, Xun] Univ Jinan, Sch Mat Sci & Engn, Jinan 250022, Shandong, Peoples R China.;[Hu, Guangzhi; Wang, Ping] Cent South Univ Forestry & Technol, Coll Environm Sci & Engn, Changsha 410004, Hunan, Peoples R China.;[Dong, Yemin] Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, State Key Lab Funct Mat Informat, Shanghai 200050, Peoples R China.;[Wang, Ying] Univ Chinese Acad Sci, Beijing 100049, Peoples R China.

通讯机构： [Mamat, X; Li, YT; Hu, GZ; Hu, Guangzhi] C;Chinese Acad Sci, Key Lab Chem Plant Resources Arid Reg, State Key Lab Basis Xinjiang Indigenous Med Plant, Xinjiang Tech Inst Phys & Chem, Urumqi 830011, Peoples R China.;Cent South Univ Forestry & Technol, Coll Environm Sci & Engn, Changsha 410004, Hunan, Peoples R China.

关键词： Electrochemical sensor;MoS2@MWCNTs;aristolochic acids;linear sweeping voltammetry

摘要： <jats:title>Abstract</jats:title><jats:p>In this study, a molybdenum disulfide/multiwalled carbon nanotubes (MoS<jats:sub>2</jats:sub>@MWCNTs) nanocomposite was synthesized by employing a simple hydrothermal method. The flower‐like structure of the MoS<jats:sub>2</jats:sub>@MWCNTs was characterized via scanning electron microscopy (SEM) and transmission electron microscopy (TEM), and the load of crystalline MoS<jats:sub>2</jats:sub> was verified via X‐ray diffraction (XRD) and energy‐dispersive spectroscopy (EDS). The as‐prepared MoS<jats:sub>2</jats:sub>@MWCNTs nanocomposite was used to modify glassy carbon electrode (GCE) as an electrochemical sensor for detecting aristolochic acids (AAs). With the optimized parameters, the proposed electrochemical sensor exhibited good sensitivity and a broad linear concentration range for detecting AAs from 0.2 to 10 <jats:styled-content>μ</jats:styled-content>mol/L and 10 to 100 <jats:styled-content>μ</jats:styled-content>mol/L, with the sensitivity of −3.10 <jats:styled-content>μ</jats:styled-content>A/(<jats:styled-content>μ</jats:styled-content>mol/L) and −0.91 <jats:styled-content>μ</jats:styled-content>A/(<jats:styled-content>μ</jats:styled-content>mol/L), respectively. The detection limit was also calculated as 0.06 <jats:styled-content>μ</jats:styled-content>mol/L (S/N=3) based on the low background signal. Furthermore, the modified electrochemical sensor exhibited good selectivity, repeatability, reproducibility, and stability, thus showing potential application for detecting AA in chinese herbs with good mean recovery and accuracy. In other words, the MoS<jats:sub>2</jats:sub>@MWCNTs/GCE can be used as an excellent platform to detect AAs.</jats:p>

语种： 英文

作者： Zhao, Ziwei;Ge, Tida*;Gunina, Anna;Li, Yuhong;Zhu, Zhenke;...

期刊： Plant and Soil,2019年445(1-2):137-152 ISSN：0032-079X

通讯作者： Ge, Tida

作者机构： [Kuzyakov, Yakov; Zhao, Ziwei] Georg August Univ Gottingen, Dept Soil Sci Temperate Ecosyst, Dept Agr Soil Sci, D-37077 Gottingen, Germany.;[Li, Yuhong; Wu, Jinshui; Zhu, Zhenke; Zhao, Ziwei; Ge, Tida] Chinese Acad Sci, Inst Subtrop Agr, Key Lab Agroecol Proc Subtrop Reg, Changsha 410125, Hunan, Peoples R China.;[Li, Yuhong; Wu, Jinshui; Zhu, Zhenke; Zhao, Ziwei; Ge, Tida] Chinese Acad Sci, Inst Subtrop Agr, Changsha Res Stn Agr & Environm Monitoring, Changsha 410125, Hunan, Peoples R China.;[Gunina, Anna] Dokuchaev Soil Sci Inst, Dept Soil Biol & Biochem, Moscow, Russia.;[Peng, Peiqin] Cent South Univ Forestry & Technol, Coll Environm Sci & Engn, Changsha 410004, Peoples R China.

通讯机构： [Ge, Tida] C;Chinese Acad Sci, Inst Subtrop Agr, Key Lab Agroecol Proc Subtrop Reg, Changsha 410125, Hunan, Peoples R China.;Chinese Acad Sci, Inst Subtrop Agr, Changsha Res Stn Agr & Environm Monitoring, Changsha 410125, Hunan, Peoples R China.

关键词： GC-IRMS;Continuous (CO2)-C-13 labeling;Belowground photosynthate allocation;Rice rhizodeposition;N priming effect;Phospholipid fatty acid analysis

摘要： Background and aims: Carbon (C) and nitrogen (N) availability in soil change microbial community composition and activity and so, might affect soil organic matter (SOM) decomposition as well as allocation of plant assimilates. The study was focused on interactions between C and N availability and consequences for rhizodeposition and microbial community structure in paddy soil. Methods: Rice continuously labeled in a 13CO2 atmosphere was fertilized with either carboxymethyl cellulose (CMC) (+C), ammonium sulfate (+N), or their combination (+CN), and unfertilized soil was used as a control. 13C was traced in aboveground and belowground plant biomass, soil organic matter, and microbial biomass. Microbial community composition was analyzed by phospholipid fatty acids (PLFAs). Results: +CN application led to a higher yield and lower root C and N content: 13C assimilated in shoots increased by 1.39-fold and that in roots decreased by 0.75-fold. Correspondingly, after +CN addition, 13C from rhizodeposits incorporated into SOM and microorganisms decreased by 0.68-fold and 0.53-fold, respectively, as compared with that in the unfertilized soil. The application of +C or + N alone resulted in smaller changes. CMC led to a 3% of total N mobilized from SOM and resulted in a positive priming effect. Both fertilizations (+C, +N, or + CN) and plant growth stages affected soil microbial community composition. With decreasing microbial biomass C and N, and PLFA content under +CN amendment, +CN fertilization decreased Gram-positive (G+)/ Gram-negative (G-) ratios, and resulted in lower G+ bacteria and fungi abundance, whereas G- and actinomycetes were stimulated by N fertilization. Conclusions: Organic C fertilization led to a positive N priming effect. Organic C and mineral N application decreased C input by rhizodeposition associated with lower 13C recovery in SOM and microbial incorporation. C and N addition also altered microbial community composition, as +CN decreased content of microbial groups, such as G+ bacteria and fungi, but +N stimulated G- bacteria and actinomycetes. © 2018, Springer Nature Switzerland AG.

语种： 英文

作者： Yalikun, Nuerbiya;Mamat, Xamxikamar*;Li, Yongtao*;Hu, Xun;Wang, Ping;...

期刊： Microchimica Acta,2019年186(6):379 ISSN：0026-3672

通讯作者： Mamat, Xamxikamar;Li, Yongtao;Hu, Guangzhi

作者机构： [Li, Yongtao; Yalikun, Nuerbiya; Mamat, Xamxikamar; Mamat, X; Hu, Guangzhi] Chinese Acad Sci, Key Lab Chem Plant Resources Arid Reg, State Key Lab Basis Xinjiang Indigenous Med Plant, Xinjiang Tech Inst Phys & Chem, Urumqi 830011, Peoples R China.;[Yalikun, Nuerbiya] Univ Chinese Acad Sci, Beijing 100049, Peoples R China.;[Hu, Xun] Jinan Univ, Sch Mat Sci & Engn, Jinan 250022, Shandong, Peoples R China.;[Hu, Guangzhi; Wang, Ping] Cent South Univ Forestry & Technol, Coll Environm Sci & Engn, Changsha 410004, Hunan, Peoples R China.

通讯机构： [Mamat, X; Li, YT; Hu, GZ; Hu, Guangzhi] C;Chinese Acad Sci, Key Lab Chem Plant Resources Arid Reg, State Key Lab Basis Xinjiang Indigenous Med Plant, Xinjiang Tech Inst Phys & Chem, Urumqi 830011, Peoples R China.;Cent South Univ Forestry & Technol, Coll Environm Sci & Engn, Changsha 410004, Hunan, Peoples R China.

关键词： Cyclic voltammetry;Differential pulse voltammetry;Electrochemistry;Nanocluster;Sensor;Electrochemical response;Electro catalytic oxidation;Flavonoids

摘要： The authors describe a method for synthesis of a nanomaterial consisting of porous carbon encapsulated Mg-Al-Si alloy (denoted as Mg-Al-Si@PC) nanocluster. The nanocluster was synthesis by a solvothermal reaction, followed by high-temperature annealing. The nanoclusters were used as a novel immobilization platform for electrochemical sensing of rutin. The electrochemical behavior of rutin at a modified electrode was investigated by cyclic voltammetry and differential pulse voltammetry. The modified electrode demonstrates a high electrocatalytic activity toward rutin oxidation at a relatively low working potential (0.6 vs. Ag/AgCl). Under optimal conditions, the sensor has a linear response in the 1–10μM rutin concentration range, and a 0.01μM lower detection limit (at an S/N ratio of 3). It was successfully applied to the quantification of rutin in pharmaceutical tablets, and satisfactory results were obtained. Furthermore, the results correspond with those with the standard method and with the amounts indicated by the producer, respectively. [Figure not available: see fulltext.] © 2019, Springer-Verlag GmbH Austria, part of Springer Nature.

语种： 英文

作者： Qin, Danfeng;Chen, Anran;Mamat, Xamxikamar*;Li, Yongtao*;Hu, Xun;...

期刊： Analytica Chimica Acta,2019年1078:32-41 ISSN：0003-2670

通讯作者： Hu, Guangzhi;Mamat, Xamxikamar;Li, Yongtao

作者机构： [Chen, Anran; Qin, Danfeng; Hu, Guangzhi] Yunnan Univ, Sch Chem Sci & Technol, Minist Educ, Key Lab Med Chem Nat Resource, Kunming 650091, Yunnan, Peoples R China.;[Chen, Anran; Qin, Danfeng; Hu, Guangzhi] Yunnan Univ, Sch Energy, Kunming 650091, Yunnan, Peoples R China.;[Li, Yongtao; Mamat, Xamxikamar; Qin, Danfeng; Hu, Guangzhi; Mamat, X] Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Key Lab Chem Plant Resources Arid Reg, State Key Lab Basis Xinjiang Indigenous Med Plant, Urumqi 830011, Peoples R China.;[Hu, Xun] Univ Jinan, Sch Mat Sci & Engn, Jinan 250022, Shandong, Peoples R China.;[Hu, Guangzhi; Wang, Ping] Cent South Univ Forestry & Technol, Coll Environm Sci & Engn, Changsha 410004, Hunan, Peoples R China.

通讯机构： [Hu, Guangzhi] Y;[Mamat, X; Li, YT] C;Yunnan Univ, Sch Chem Sci & Technol, Minist Educ, Key Lab Med Chem Nat Resource, Kunming 650091, Yunnan, Peoples R China.;Yunnan Univ, Sch Energy, Kunming 650091, Yunnan, Peoples R China.;Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Key Lab Chem Plant Resources Arid Reg, State Key Lab Basis Xinjiang Indigenous Med Plant, Urumqi 830011, Peoples R China.

关键词： Cadmium;Differential pulse anodic stripping voltammetry;Dual yolk-shell structure;Lead;Nitrogen doping

摘要： In this work, we report double-shelled yolk-shell Si@C structure as a high-performance electrochemical sensing material for heavy metal ions. A SiO2-assisted polybenzoxazine (PB) coating strategy is used to synthesize highly monodispersed Si@C microspheres. After thermal carbonization of PB layers and selective removal of the SiO2 layers, Si@C microspheres were prepared. The resultant Si@C microspheres exhibit uniform spherical morphology and clearly double-shelled yolk-shell structures. The obtained Si@C microspheres are employed to prepare the chemically modified electrode for the sensitive determination of Cd(II) and Pb(II). By the method of anodic stripping voltammetry, the Si@C-based electrode shows a very wide linear dynamic range for target ions (e.g., 0.5–400 μg L−1 for Cd(II) and Pb(II)) and low limit of detections (e.g., 0.068 μg L−1 for Cd(II) and for 0.105 μg L−1 Pb(II)). The remarkable results, such as excellent resistance to interference ions, good repeatability, and reproducibility were also obtained. Furthermore, compared with those Cd(II) and Pb(II) sensors known in the literature, the analytical performance of Si@C-based electrode is better. Finally, when further used to determine Cd(II) and Pb(II) in tap water and lake water, the results of fabricated electrode successfully achieve good consistency with the data obtained from inductively coupled plasma-mass spectrometry (ICP-MS). © 2019 Elsevier B.V.

语种： 英文

作者： 李芸;李科林;龙坚

期刊： 教育教学论坛,2018年(08):122-123 ISSN：1674-9324

作者机构： 中南林业科技大学环境科学与工程学院

关键词： 农林高校;“环境监测”;教学改革

摘要： 该文基于农林高校环境专业的学科背景,结合＂环境监测＂课程的特点,从突出学科特色出发,在重视环境监测基本理论知识掌握、强调环境监测实践能力培养的＂环境监测＂课程教学上进行了一些改革探索,以期培养适应新时期生态环境保护需要的专业应用型人才。

语种： 中文

作者： 欧阳林男;吴晓芙;陈永华;李芸;冯冲凌;...

期刊： 生态学报,2017年37(8):2694-2705 ISSN：1000-0933

通讯作者： Wu, X.

作者机构： [欧阳林男; 吴晓芙; 陈永华; 李芸; 冯冲凌; 陈明利] 中南林业科技大学环境科学与工程学院, 长沙, 410004

通讯机构： College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, China

关键词： 锰矿区;植物修复;生态系统恢复;环境工程;自由能;化学势;生态毒理

摘要： 基于热力学理论建立了生态系统Gibbs自由能方程,用以计算湘潭锰矿生态修复区植被系统的自由能(G)和物种化学势(μ)。生态修复区(及对照区)以泡桐(Paulownia fortunei)和栾树(Koelreuteriα bipinnata)作为建群植物,总面积为4 hm2,修复区泡桐和栾树的根际施用了含有自试验点废弃矿渣中筛选出的耐性菌株的有机菌肥,目的是为植物生长提供必要养分和降低根际土壤重金属毒性,对照区泡桐和栾树的根际施用了等量的化肥。泡桐和栾树种植后5 a期间,修复区与对照区均自然萌发生长了许多本土植物种类。试验结果表明,修复区植物种类数达到48,为对照区的3.7倍;修复区的总生物量、锰吸收量分别达到23324 kg/hm2和4280 g/hm2,为对照区对应值的20.6和2.6倍;修复区系统自由能G远远大于对照区的值,说明有机菌肥具有显著的改良污染土壤根际环境的效果。修复区和对照区植物种类之间的化学势μ均存在显著差异(P<0.001),M值差异范围分别为-3.79—6.76和-3.42—3.59,该一差异反映不同物种适应和修复锰污染环境的能力。G和μ值包含了生态系统生产力、生物多样性,植物种类生长势、重金属富集能力、生态学行为等综合信息,能反映生态系统与立地环境的关系和修复植物的生态学特性,可作为重金属污染区植被修复效果评价和修复植物筛选的重要指标。

语种： 中文

作者： Ji, Zehua*;Feng, Chongling;Wu, Xiaofu;Li, Yanfeng;Li, Liugang;...

期刊： ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY,2017年36(6):1658-1666 ISSN：1944-7442

通讯作者： Ji, Zehua

作者机构： [Feng, Chongling; Ji, Zehua; Li, Yanfeng; Liu, Xiangjun; Wu, Xiaofu; Li, Liugang] Cent South Univ Forestry & Technol, Inst Environm Engn Res, Changsha 410004, Hunan, Peoples R China.

通讯机构： [Ji, Zehua] C;Cent South Univ Forestry & Technol, Inst Environm Engn Res, Changsha 410004, Hunan, Peoples R China.

关键词： biosorption;breakthrough curve;compound biosorbent;millet chaff;peanut shell

摘要： <jats:p>In this research, compound biosorbent peanut shell‐HA (PSH) and millet chaff‐HA (MCH), which were composited by peanut shell (PS) and millet chaff (MC) with lead resistent <jats:italic>Aspergillus oryzae</jats:italic> (HA), respectively, were used to remove Pb<jats:sup>2+</jats:sup> from aqueous solution. The characterize of biosorbents were analyzed by FTIR and SEM. Batch experiments were performed to evaluate the effect of pH, biosorbent concentration, initial Pb<jats:sup>2+</jats:sup> concentration and contact time on the Pb<jats:sup>2+</jats:sup> removal. The results indicated that the functional groups and surface morphology of PSH and MCH were significantly different after compound procedures. The maximum adsorption capacity <jats:italic>q</jats:italic><jats:sub>m</jats:sub> of PSH and MCH were 43.09% and 83.21% higher than PS and MC, respectively. Meanwhile, the compound biosorbent showed a significant adsorption advantage at the low pH and more efficient in adsorption compared to pristine materials. The adsorption isotherms and kinetics studies demonstrated that the adsorption process can be well fitted by the Langmuir and pseudo‐second‐order model, respectively. Fixed‐bed experiments showed that the MCH possesses stronger fixed bed adsorption capacity (<jats:italic>q</jats:italic><jats:sub>exp[MCH]</jats:sub>=8.30 mgg<jats:sup>−1</jats:sup>,<jats:italic>q</jats:italic><jats:sub>exp[PSH]</jats:sub>=7.13 mgg<jats:sup>−1</jats:sup>) and shorter height of mass transfer zone (<jats:italic>H</jats:italic><jats:sub>[MCH]</jats:sub>=6.96 cm, <jats:italic>H</jats:italic><jats:sub>[PSH]</jats:sub>=16.56 cm) than PSH. The compound biosorbents performs better than pristine materials with higher adsorption capacity. This study provides a promising strategy for manufacture of new biosorbent. © 2017 American Institute of Chemical Engineers Environ Prog, 36: 1658–1666, 2017</jats:p>

语种： 英文

作者： 舒艳;李科林;李芸;汤春芳

期刊： 环境工程学报,2016年10(6):2947-2954 ISSN：1673-9108

通讯作者： Tang, C.

作者机构： [舒艳; 李芸; 李科林; 汤春芳] College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China

通讯机构： [Tang, C.] C;College of Environmental Science and Engineering, China

关键词： 香蒲绒纤维;吸附;0#柴油;菜籽油;机理

摘要： 为了解香蒲绒纤维对油的吸附性能与机理,通过静态实验,研究了吸附时间、温度、香蒲绒投加量、油浓度对狭叶香蒲绒吸附水溶液中0~#柴油、菜籽油的影响。香蒲绒纤维对油的吸附大约15 min达到平衡;2种油类物质的吸附量随温度、香蒲绒投加量增加而降低,随0~#柴油和菜籽油含量增加而增加。热力学分析表明,香蒲绒对油类物质的吸附过程自发而且放热;拟二级动力学模型比拟一级动力学模型对吸附动力学实验结果拟合度更高;相比Freundlich等模型,0~#柴油和菜籽油的平衡吸附量与Langmuir吸附等温模型的拟合效果更好;25 ℃条件下,由Langmuir线性模型得到的0~#柴油和菜籽油的最大吸附量Q_m分别为32.15 g/g和34.60 g/g。香蒲绒纤维表面粗糙、凹凸不平,主要含有O-H、C=O、C-O等官能团,平均蜡质含量为19.86%。结果表明,香蒲绒纤维是处理含油废水廉价且效果良好的吸附剂,吸附机理以物理吸附为主。

语种： 中文

作者： 欧阳林男;吴晓芙;李芸;冯冲凌;陈永华

期刊： 中国环境科学,2016年36(3):908-916 ISSN：1000-6923

通讯作者： Wu, Xiao-Fu(wuxiaofu530911@vip.163.com)

作者机构： [吴晓芙; 陈永华; 冯冲凌; Li, Yun; 李芸] College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, China;[Li, Yun; 冯冲凌] Research Center of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, China

通讯机构： College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, China

关键词： 锰矿区;植物修复;生物积累量;转运量系数

摘要： 在湘潭锰矿废弃地种植泡桐和栾树,建立了4hm~2生态修复示范区.工程区基质Mn平均含量高达20041mg/kg,Pb、Zn、Cu、Cd含量也远超过湖南省和全国的背景值,属复合型重度污染.污染区不覆土,苗木移植前每株根际定量施用了含有自污染区矿渣分离出的抗性菌株的专用有机肥.种植两年后,泡桐和栾树成活率均达到83%以上.泡桐生长状况明显优于栾树,两种植物叶的重金属含量均大于根和茎,泡桐Mn、Cu、Zn的浓度和积累量显著高于栾树.5年生泡桐Mn积累量达到2295g/hm~2,转运量系数为2.32.试验证明,采用有机菌肥改良根际环境后,泡桐与栾树均可作为锰污染区的修复树种,而泡桐的生长速率和重金属的耐受和积累性能优于栾树.

语种： 中文

作者： 石润;吴晓芙;李芸;冯冲凌;李韵诗

期刊： 中南林业科技大学学报,2015年35(4):139-146 ISSN：1673-923X

作者机构： [石润; 吴晓芙; 李芸; 冯冲凌; 李韵诗] 中南林业科技大学环境科学与工程研究中心

关键词： 重金属污染土壤;植物修复;本土植物;超积累植物

摘要： 综述了文献报道的应用于重金属污染土壤治理的超积累、本土和生态-经济型植物种类。超积累植物具有抗性强、耐受重金属浓度高和转移系数大的优点,不足之处是大多数超积累植物适生范围窄,生物量小、富集总量小,以至修复周期长。在复合重金属污染场地的治理中,多金属超积累植物的筛选已成为新的关注点。为了发挥植物修复技术在重建植被与景观、控制水土流失、丰富生物多样性、提高土地利用价值等诸多方面的功能,有必要扩大植物种类筛选与应用的范围。利用适生的本土先锋植物生长快的优势,结合用材、工业原料、药用、能源、景观等生态-经济型植物的功能构建复合植被群落,可望成为发展植物修复技术的新趋势。

语种： 中文

作者： 冀泽华;吴晓芙;李芸;冯冲凌

期刊： 环境化学,2015年34(11):2109-2117 ISSN：0254-6108

作者机构： [冀泽华; 吴晓芙; 李芸; 冯冲凌] 中南林业科技大学环境科学与工程研究所

关键词： 动态吸附;化学势变;蛭石;重金属离子

摘要： 测试了蛭石-水溶液体系中Pb~(2+)、Cd~(2+)、Zn~(2+)离子的等温动态吸附曲线.实验结果表明蛭石具有较强的去除水溶液中Pb~(2+)、Cd~(2+)、Zn~(2+)离子的能力.基于等温条件下物理化学反应组分的标准化学势为常数的原理,建立了反应体系的动态化学势变方程,为分析离子吸附机理和发展离子吸附技术提供了理论依据与实用方法.测试离子化学势的动态变化证明离子吸附反应遵循电化学势作用定律.

语种： 中文

作者： 冯冲凌;李科林;李芸

期刊： 中南林业科技大学学报,2012年32(12):42-45,56 ISSN：1673-923X

作者机构： [冯冲凌; 李科林; 李芸] 中南林业科技大学环境科学与工程研究中心

关键词： 人工湿地;污水处理;微生物群落;净化机理

摘要： 人工湿地系统中微生物群落特征与湿地结构、布水方式及植物种类密切相关。总体上,人工湿地系统中微生物的种类多样性和数量沿水流方向呈递减趋势,植物对湿地微生物群落的影响主要在基质表层的根际效应区间,采取控氧措施可促进微生物群落向纵深发展。人工湿地系统中的氮代谢微生物主要是硝化细菌和反硝化细菌,有新的研究表明,厌氧氨氧化细菌不仅具有较强的去氮能力,还能显著提高废水COD的去除率。不同种类的磷细菌在湿地系统中磷的溶解、沉淀和转化利用中发挥着重要的作用,生物制剂的应用可提高磷的去除率。人工湿地系统中还存在一系列具有特殊功能的微生物种类,包括可降低镉等重金属污染毒性、降解石油类化合物、多环芳烃以及酚类的微生物菌种等。研究人工湿地微生物群落季相变化演替规律及其净化机理、考察分析微生物与植物及基质之间的综合效应和筛选驯化功能菌种,是发展人工湿地技术的重点领域。

语种： 中文

作者： 姚咏歌;李芸;彭婧;刘毅霖;吴晓芙

期刊： 中南林业科技大学学报,2012年32(12):83-87 ISSN：1673-923X

作者机构： 中南林业科技大学环境科学与工程研究所,湖南长沙,410004;[吴晓芙; 姚咏歌; 彭婧; 刘毅霖; 李芸] 中南林业科技大学

关键词： 天然沸石;蛭石;吸附容量;去除率;处理成本

摘要： 以天然沸石和蛭石为吸附剂,采用等温吸附方法,研究其对Cu~(2+)的吸附性能。结果表明,天然沸石对Cu~(2+)的去除率略高于蛭石。天然沸石和蛭石的吸附容量p值分别为8.85 mg/g和6.99 mg/g。在实际应用中,天然沸石的单价低,吸附容量大,单位处理成本低,因此,天然沸石是人工湿地吸附缓冲单元理想的介质填料。

语种： 中文

作者： 彭婧;吴晓芙;李芸;姚咏歌;刘毅霖

期刊： 中南林业科技大学学报,2012年32(12):78-82 ISSN：1673-923X

作者机构： [彭婧; 吴晓芙; 李芸; 姚咏歌; 刘毅霖] 中南林业科技大学环境科学与工程研究中心

关键词： 蛭石;水洗;酸洗;人工湿地;填料

摘要： 分析比较了水洗蛭石和酸洗蛭石样本吸附Pb~(2+)、Cd~(2+)、Zn~(2+)的差异。试验结果表明,水洗和酸洗样本中测试离子的吸附存在明显的离子浓度和吸附剂浓度效应。水洗样本测试离子的吸附量显著高于酸洗样本的吸附量,其原因是酸洗样本体系存在大量的H+离子参与吸附竞争,降低了吸附剂的离子吸附容量。在水洗和酸洗蛭石体系中,测试离子被吸附的毫克量差异显著,顺序为Pb~(2+)>Cd~(2+)≥Zn~(2+)。水洗蛭石体系中所有测试离子的去除率都很高,说明水洗蛭石样本可作为构建人工湿地吸附缓冲系统的基质填料。

语种： 中文

作者： 刘毅霖;李芸;彭婧;姚咏歌;陈星

期刊： 中南林业科技大学学报,2012年32(12):88-91,103 ISSN：1673-923X

作者机构： [刘毅霖; 李芸; 彭婧; 姚咏歌; 陈星] 中南林业科技大学环境科学与工程研究所

关键词： 离子吸附;蛭石;水洗;酸洗

摘要： 以水洗和酸洗蛭石为吸附剂,研究了固/液吸附体系中Mn~(2+)的吸附特性。结果表明,水洗和酸洗蛭石体系Mn~(2+)离子的吸附都存在明显的离子和吸附剂浓度效应,水洗蛭石体系Mn~(2+)离子的去除率显著高于酸洗蛭石体系。在酸洗过程中,蛭石表面部分吸附位被H~+离子占据,降低了阳离子的交换能力。酸洗蛭石的吸附容量低,在吸附过程中H~+离子的解吸会降低出水溶液的pH值,不宜作为湿地基质填料。

语种： 中文

作者： 石卉;吴晓芙;李科林;李芸;陈永华

期刊： 中南林业科技大学学报,2010年30(4):150-153 ISSN：1673-923X

作者机构： [石卉; 吴晓芙; 李科林; 李芸; 陈永华] 中南林业科技大学环境科学与工程研究中心

关键词： 生物柴油生产废水;含油废水处理;吸附技术

摘要： 为选择和开发生物柴油生产废水的高效处理技术,综合比较了各种含油废水的处理方法的优缺点. 基于生物柴油生产废水处理技术的现状,提出了采用高效低成本的吸附技术处理生物柴油废水,并比较了各种吸附材料的特点,探讨了吸附处理生物含油废水技术的发展趋势

语种： 中文