The reconstitution of reed cellulose by the hydrothermal carbonization and acid etching to improve the performance of photocatalytic degradation of antibiotics
作者：
Xu, Hao;Li, Meifang;Ou, Yangyuan;Li, Shang;Zheng, Xia;...
期刊：
International Journal of Biological Macromolecules ,2023年236:123976 ISSN：0141-8130
通讯作者：
Xingong Li
作者机构：
[Li, Xingong; Xu, Hao; Zheng, Xia] Cent South Univ Forestry & Technol, Sch Mat Sci & Engn, Changsha 410004, Peoples R China.;[Tang, Chunfang; Ou, Yangyuan; Li, Meifang] Cent South Univ Forestry & Technol, Coll Environm Sci & Engn, Changsha 410004, Peoples R China.;[Li, Shang] Cent South Univ Forestry & Technol, Sch Foreign Languages, Changsha 410004, Peoples R China.;[Chen, Daihui] Changsha Forest Protect Stn, Changsha 410004, Peoples R China.
通讯机构：
[Xingong Li] S;School of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
关键词：
Acid etching;Cellulose;Degradation;Polyfuran;Tetracycline
摘要：
As an economical and environment-friendly material, hydrothermal carbonation carbon (HTCC) has been widely used in the field of adsorption and catalysis. Previous studies mainly used glucose as raw material to prepare HTCC. Cellulose in biomass can be further hydrolyzed into carbohydrate; however, there are few reports on the direct preparation of HTCC from biomass and the relevant synthesis mechanism is unclear. In this study, HTCC with efficient photocatalytic performance was prepared from reed straw using dilute acid etching under hydrothermal conditions and was used for the degradation of tetracycline (TC). The mechanism of photodegradation of TC by HTCC was systematically elucidated through various characterization techniques and density functional theory (DFT) calculations. This study provides a new perspective on the preparation of green photocatalysts and demonstrates their promising application in environmental remediation.
语种：
英文
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Efficient removal of per- and polyfluoroalkyl substances from biochar composites: Cyclic adsorption and spent regenerant degradation
作者：
Jiaqin Deng;Jianing Han;Changlan Hou;Yanru Zhang;Ying Fang;...
期刊：
Chemosphere ,2023年341:140051 ISSN：0045-6535
通讯作者：
Jiaqin Deng<&wdkj&>Xinjiang Hu
作者机构：
[Chunfang Tang; Yuan Yuan; Jianing Han; Meifang Li; Jiaqin Deng; WanXuan Du] College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China;[Jiaqin Deng] State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha, 410004, China. Electronic address: dengjiaqin@csuft.edu.cn;[Changlan Hou] College of Environmental Science and Engineering, Hunan University, Changsha, 410082, China;[Yanru Zhang] State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha, 410004, China;[Ying Fang] College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
通讯机构：
[Jiaqin Deng; Xinjiang Hu] C;College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China<&wdkj&>College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China<&wdkj&>State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha, 410004, China
关键词：
Adsorption;Biochar;Copolymer;Degradation;Per- and polyfluoroalkyl substances;Regeneration
摘要：
In order to solve the problem of efficient desorption of per- and polyfluoroalkyl substances (PFAS) and regeneration of adsorbents, a novel biochar composite was prepared based on the quaternary ammonium groups and hydrophobicity of sulfobetaine polymer, which can be used for the efficient removal of various PFASs and has great regeneration ability. Through adsorption, regeneration and degradation experiment, the comprehensive effect of the novel biochar composite on the whole process of removal of PFAS was systematically investigated. The results showed that the maximum adsorption capacity of PFOS, PFOA, PFBS, and PFBA reached 634mg/g, 536mg/g, 301mg/g and 264mg/g, respectively. The adsorption process involved hydrophobicity, electrostatic, pore diffusion and complexation. The NaI+NaOH solution was used at 50°C to achieve efficient regeneration of the adsorbent, which can be recycled more than 4 times. When the vacuum-ultraviolet (VUV)/sulfite reduction system was used for deep degradation of the regenerated solution, the effect of hydrated electrons on PFAS was enhanced due to the inclusion of NaI and NaOH in the regeneration reagent, resulting in an increase in the degradation efficiency (89.1%-99.9%) and defluorination efficiency (63.3%-84.1%). Based on the performance of BC-P(SB-co-AM) and the treatment efficiency of PFAS, the design idea of the whole process treatment technology of PFAS proposed in this work is expected to hold great promise in environmental applications. This work provides a novel idea and system for the efficient adsorption removal and desorption of PFAS, and subsequent deep degradation.
语种：
英文
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Developing self-floating N-defective graphitic carbon nitride photocatalyst for efficient photodegradation of Microcystin-LR under visible light
作者：
Li, Xin;Li, Guoyu;Li, Meifang;Ji, Xiaodong;Tang, Chunfang;...
期刊：
Science of The Total Environment ,2023年895:165171 ISSN：0048-9697
通讯作者：
Hu, XJ
作者机构：
[Tang, Chunfang; Jiang, Honghui; Hu, Xinjiang; Li, Guoyu; Wang, Hui; Li, Meifang; Fu, Xiaohua; Ji, Xiaodong; Li, Xin] Cent South Univ Forestry & Technol, Coll Environm Sci & Engn, Changsha 410004, Peoples R China.;[Tan, Xiaofei] Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Peoples R China.
通讯机构：
[Hu, XJ ] C;Cent South Univ Forestry & Technol, Coll Environm Sci & Engn, Changsha 410004, Peoples R China.
关键词：
Defective g-C(3)N(4);MC-LR;Photocatalysis;Self-floating
摘要：
The frequent occurrence of algal blooms in water bodies leads to a significant accumulation of microcystin-LR (MC-LR). In this study, we developed a porous foam-like self-floating N-deficient g-C3N4 (SFGN) photocatalyst for efficient photocatalytic degradation of MC-LR. Both the characterization results and DFT calculations indicate that the surface defects and floating state of SFGN synergistically enhance light harvesting and photogenerated carrier migration rate. The photocatalytic process achieved a nearly 100 % removal rate of MC-LR within 90 min, while the self-floating state of SFGN maintained good mechanical strength. ESR and radical capture experiments revealed that the primary active species responsible for the photocatalytic process was [rad]OH. This finding confirmed that the fragmentation of MC-LR occurs as a result of [rad]OH attacking the MC-LR ring. LC–MS analysis indicated that majority of the MC-LR molecules were mineralized into small molecules, allowing us to infer possible degradation pathways. Furthermore, after four consecutive cycles, SFGN exhibited remarkable reusability and stability, highlighting the potential of floating photocatalysis as a promising technique for MC-LR degradation. © 2023 Elsevier B.V.
语种：
英文
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Mechanisms underlying the photocatalytic degradation pathway of ciprofloxacin with heterogeneous TiO2
作者：
Hu, Xi* ;Hu, Xinjiang* ;Peng, Qingqing;Zhou, Lu;Tan, Xiaofei;...
期刊：
Chemical Engineering Journal ,2020年380:122366 ISSN：1385-8947
通讯作者：
Hu, Xi;Hu, Xinjiang
作者机构：
[Hu, Xi; Tang, Chunfang; Hu, Xinjiang; Wang, Hui; Hu, X; Hu, XJ; Ning, Ziqi] Cent South Univ Forestry & Technol, Coll Environm Sci & Engn, Changsha 410004, Hunan, Peoples R China.;[Peng, Qingqing] Environm Monitoring Ctr Hunan Prov, Changsha 410004, Hunan, Peoples R China.;[Zhou, Lu] Changsha Univ Sci & Technol, Sch Hydraul Engn, Changsha 410114, Hunan, Peoples R China.;[Tan, Xiaofei] Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Hunan, Peoples R China.;[Jiang, Luhua] Cent S Univ, Sch Minerals Proc & Bioengn, Changsha 410004, Hunan, Peoples R China.
通讯机构：
[Hu, X; Hu, XJ] C;Cent South Univ Forestry & Technol, Coll Environm Sci & Engn, Changsha 410004, Hunan, Peoples R China.
关键词：
Ciprofloxacin;Heterogeneous TiO2;Intermediates;Photocatalytic degradation;Toxicological assessment
摘要：
The presence of antibiotics in different water sources is a ubiquitous, global concern. The persistence of trace amounts of antibiotics can lead to antibiotic resistance of microbial pathogens and jeopardize the health of ecosystems. One possible solution is the photocatalytic degradation of antibiotics from water systems by titanium dioxide (TiO2) photocatalysis. In recent years, heterogeneous TiO2 has been examined for the photocatalytic degradation of ciprofloxacin (CIP) under UV/visible light irradiation. This review offers an overview of the recent advances in visible light-activated TiO2 for the photocatalytic degradation of CIP and the factors impacting the photocatalytic behavior. In particular, we focused on the structural elucidation of reaction intermediates, and we aimed to determine research gaps in the utilization of visible light-activated TiO2 for water treatment. Future research directions, including the ecotoxicological effect of the photocatalytic degradation intermediates, the thermodynamical and kinetic mechanisms of the photocatalytic degradation process, and future applications of heterogeneous TiO2 photocatalysts, are also proposed. © 2019 Elsevier B.V.
语种：
英文
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Effects of peat on plant growth and lead and zinc phytostabilization from lead-zinc mine tailing in southern China: Screening plant species resisting and accumulating metals
作者：
Tang, Chunfang;Chen, Yonghua* ;Zhang, Qianni;Li, Jianbin;Zhang, Fuyun;...
期刊：
Ecotoxicology and Environmental Safety ,2019年176:42-49 ISSN：0147-6513
通讯作者：
Chen, Yonghua;Liu, Zhiming
作者机构：
[Tang, Chunfang; Zhang, Qianni; Zhang, Fuyun; Chen, Yonghua; Li, Jianbin] Cent South Univ Forestry & Technol, Coll Environm Sci & Engn, Changsha 410004, Hunan, Peoples R China.;[Liu, Zhiming] Eastern New Mexico Univ, Dept Biol, Portales, NM 88130 USA.
通讯机构：
[Chen, Yonghua] C;[Liu, Zhiming] E;Cent South Univ Forestry & Technol, Coll Environm Sci & Engn, Changsha 410004, Hunan, Peoples R China.;Eastern New Mexico Univ, Dept Biol, Portales, NM 88130 USA.
关键词：
Bioaccumulation;Lead-zinc tailings;Peat;Phytostabilization;Resistant plants;Translocation
摘要：
In order to investigate the toxicity-resistance of eighteen Chinese native plants in lead (Pb)-zinc (Zn) mine tailings, we categorized their resistance to Pb and Zn, and tested their potential for phytoremediation effectiveness of Pb and Zn. Fourteen woody plant species belonging to 12 families, and 4 herbaceous species belonging to 4 families, were grown in pots with mixtures of 100% tailing +0% peat (CK), 90% tailing +10% peat (A1), and 80% tailing + 20% peat (A2), respectively. Plant height and biomass, chlorophyll content, and Pb and Zn contents of non-rhizosphere spoil mixtures and plant tissues were measured. Fifteen of the plants grew in all three spoil mixtures. Both A1 and A2 had higher plant height and biomass increment and chlorophyll contents than CK. The content of Pb and Zn in plant shoots and roots was CK > A1 > A2. The value of BCF less than 0.1, compared to 1, was a more precise classification basis for plants excluding metals. Screening for Pb and Zn resistant plants and their bioremediation potential produced the following candidate species: Sapium sebiferum, Salix matsudana, Hibiscus cannabinus, Corchorus capsularis, Ricinus communis, and Populus nigra. These species were highly Pb and Zn tolerant species, with notable growth characteristics and capacities to bioaccumulate Pb and Zn from the mine tailings. Compared to CK, the removal of Pb and Zn from non-rhizosphere spoil increased by an average of 9.64% and 9.6%, respectively in A1, but decreased in A2. The results indicated candidate species and 10% peat addition in the tailing were significant in phytoremediation of Pb and Zn regarding environmental safety.
语种：
英文
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泥炭土改良铅锌矿渣下植物修复效果研究
作者：
李建彬;陈永华;汤春芳;龚紫薇;何蔚
期刊：
中南林业科技大学学报 ,2019年39(2):93-100 ISSN：1673-923X
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,410004;[李建彬; 龚紫薇; 陈永华; 何蔚; 汤春芳] 中南林业科技大学
关键词：
铅锌尾渣;铅锌矿渣区;土壤改良效果;植物修复效果;泥炭土;湖南郴州资兴
摘要：
针对铅锌矿渣物理结构差、毒性高、植物成活率低的问题,研究了湖南郴州资兴铅锌矿渣在泥炭土改良下的植物修复效果。以泡桐Paulownia fortunei、夹竹桃Nerium oleander 和苎麻Boehmeria nivea 为材料,在不同泥炭土浓度(梯度为:CK:0、A1:10%、A2:20%、A3:30%)改良铅锌渣下进行盆栽实验,测定了植物根、茎、叶生物量,根系构型指标、植物与矿渣铅锌含量、矿渣根际土壤pH 值、有机质(OM)。研究结果如下:1)随改良剂浓度的增加,3 种植物总生物量增量均呈现改良A3 > A2 > A1 > CK 的增长趋势,但各部位生物量增长有差异。2)3 种植物总根长、根表面积、根体积和根尖都随改良剂浓度增加而增加显著(P < 0.05),但根系构型有差异。3)3 种植物体内Pb、Zn 含量总体上都呈现侧根 >主根 >茎 >叶的分布规律,其中0 < d < 1mm 径级区间苎麻细根数量最多,对应苎麻侧根Pb、Zn 含量最高。随改良处理浓度增加,矿渣Pb、Zn 含量降低显著(P < 0.05),种植植物后矿渣Pb、Zn 含量降低显著(P < 0.05),但不同植物根际Pb、Zn 含量的降低有差异,Pb 减少量排序泡桐 >夹竹桃 >苎麻,Zn 减少量排序苎麻 >泡桐 >夹竹桃。4)随着处理浓度增加,土壤有机质(OM)增加显著,pH 降低显著(P < 0.05),种植植物后OM 含量和pH 值增加显著(P < 0.05),OM 含量增加排序:苎麻 >泡桐 >夹竹桃,pH 值增加排序:夹竹桃 >泡桐 >苎麻。5)从细根生长和土壤性质相关性来看,泡桐细根根长、体积、表面积、苎麻细根表面积都和根际OM 相关性显著,泡桐细根体积、表面积、夹竹桃体积及根尖数和根际pH 负相关显著,其他相关性强但不显著。6)3 种植物Pb、Zn 总累积量基本随着改良处理浓度增加而增加,但植物转移量系数有差异,泡桐和苎麻转移量系数总体上随改良处理浓度增加而增加,而夹竹桃转移量最优的处理为10%泥炭土。
语种：
中文
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Exogenous spermidine elevating cadmium tolerance in Salix matsudana involves cadmium detoxification and antioxidant defense
作者：
Tang, Chunfang* ;Zhang, Riqing;Hu, Xinjiang;Song, Jinfeng;Li, Bing;...
期刊：
International Journal of Phytoremediation ,2019年21(4):305-315 ISSN：1522-6514
通讯作者：
Tang, Chunfang;Hu, Xi;Zhao, Yunlin
作者机构：
[Hu, Xi; Tang, Chunfang; Hu, Xinjiang; Ou, Danling; Tang, CF; Hu, X; Song, Jinfeng; Li, Bing] Cent South Univ Forestry & Technol, Coll Environm Sci & Engn, Changsha 410004, Hunan, Peoples R China.;[Zhang, Riqing] Cent South Univ Forestry & Technol, Coll Forestry, Changsha, Hunan, Peoples R China.;[Hu, Xinjiang; Zhao, Yunlin] Cent South Univ Forestry & Technol, Coll Life Sci & Technol, Changsha 410004, Hunan, Peoples R China.
通讯机构：
[Tang, CF; Hu, X; Zhao, Yunlin] C;Cent South Univ Forestry & Technol, Coll Environm Sci & Engn, Changsha 410004, Hunan, Peoples R China.;Cent South Univ Forestry & Technol, Coll Life Sci & Technol, Changsha 410004, Hunan, Peoples R China.
关键词：
antioxidant;cadmium;hydrogen peroxide;malonaldehyde;spermidine;superoxide dismutase;bioremediation;drug effect;oxidative stress;plant leaf;plant root;willow;Antioxidants;Biodegradation, Environmental;Cadmium;Hydrogen Peroxide;Malondialdehyde;Oxidative Stress;Plant Leaves;Plant Roots;Salix;Spermidine;Superoxide Dismutase
摘要：
In this study, exogenous spermidine role on Salix matsudana tolerance to cadmium was evaluated. Spermidine and cadmium presented antagonistic effects on the biomass, copper and zinc concentrations in S. matsudana. cadmium mainly distributed in the cell wall of subcellular fraction; 46.97%–60.43% of cadmium existed in a sodium chloride-extracted form. Cadmium contents in roots, leaves, and twigs ranged from 2002.67 to 3961.00, 111.59 to 229.72, and 102.56 to 221.27 mg/kg, respectively. Spermidine application elevated cadmium concentrations in the roots, cuttings, and cell wall and the ratio of deionized water-extracted cadmium, but decreased cadmium levels in the twigs and leaves and the fractions of cadmium extracted by ethanol and sodium chloride, respectively. Putrescine and malondialdehyde were important indicators of cadmium-induced oxidative damage. Exogenous spermidine alleviated the accumulation of superoxide anion, hydrogen peroxide, malondialdehyde via promoting the levels of spermidine, soluble protein, superoxide dismutase, reductive ascorbate, glutathione reductase, and glutathione peroxidase in S. matsudana leaves under the corresponding cadmium stress. The results indicated that S. matsudana was a candidate for cadmium rhizoremediation and extraction in leaves; the spermidine application enhanced the cadmium tolerance of S. matsudana through promoting cadmium accumulation in roots, cell wall, and less bioactive chemical forms and the antioxidative ability. © 2018, © 2018 Taylor & Francis Group, LLC.
语种：
英文
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改良锰矿渣中木本植物筛选及锰的亚细胞分布和化学形态
作者：
何蔚;陈永华;梁希;汤春芳;吴晓芙
期刊：
环境工程 ,2018年36(9):154-160 ISSN：1000-8942
作者机构：
[何蔚; 陈永华; 梁希; 汤春芳; 吴晓芙] 中南林业科技大学环境科学与工程学院, 长沙, 410004
关键词：
锰矿渣;改良剂;耐性植物筛选;亚细胞分布;化学形态
摘要：
针对锰矿矿渣土壤结构不良、养分少、重金属含量高的特点,及修复植物大多为草本植物的问题,在改良锰矿矿渣(对照CK: 100%矿渣+ 0. 1 kg磷肥;改良A: 80%矿渣+ 20%泥炭土+ 0. 1 kg磷肥;改良B: 70%矿渣+ 30%泥炭土+ 0. 1 kg磷肥;改良C: 60%矿渣+ 40%泥炭土+ 0. 1 kg磷肥)种植条件下,对湖南本土的14种木本植物进行耐性筛选,并对长势良好的耐性植物的亚细胞分布和化学形态进行了分析。结果表明: 1)植物长势、生物量、株高增量、重金属的吸收量及转移量系数均呈现改良组>对照组的规律,但改良组之间不同的植物品种存在差异,总体上泡桐、夹竹桃、栾树、乌桕表现出较好的耐性。2) Mn在泡桐、夹竹桃各部位的亚细胞分布以细胞壁为主,在栾树、乌桕各部位以细胞壁和可溶性组分为主,两者共占总量的85%~ 99%,在线粒体、叶绿体和细胞核等细胞器中分布均很少。3) Mn在植物各部位的化学形态以氯化钠、水提取态为主,共占47%~ 81%,其次是醋酸态。相比于对照组,改良组对各部位Mn的化学形态的影响因植物品种不同而存在差异。
语种：
中文
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H3PO4-Activated Cattail Carbon Production and Application in Chromium Removal from Aqueous Solution: Process Optimization and Removal Mechanism
作者：
Shu, Yan;Tang, Chunfang* ;Hu, Xinjiang;Jiang, Luhua;Hu, Xi;...
期刊：
Water ,2018年10(6):754-754 ISSN：2073-4441
通讯作者：
Tang, Chunfang;Zhao, Yunlin
作者机构：
[Hu, Xi; Tang, Chunfang; Hu, Xinjiang; Shu, Yan] Cent South Univ Forestry & Technol, Coll Environm Sci & Engn, Changsha 410004, Hunan, Peoples R China.;[Hu, Xinjiang; Zhao, Yunlin] Cent South Univ Forestry & Technol, Coll Life Sci & Technol, Changsha 410004, Hunan, Peoples R China.;[Jiang, Luhua] Hunan Univ, Coll Environm Sci & Engn, Changsha 410084, Hunan, Peoples R China.
通讯机构：
[Tang, Chunfang; Zhao, Yunlin] C;Cent South Univ Forestry & Technol, Coll Environm Sci & Engn, Changsha 410004, Hunan, Peoples R China.;Cent South Univ Forestry & Technol, Coll Life Sci & Technol, Changsha 410004, Hunan, Peoples R China.
关键词：
Biochar;Cr(VI);Process optimization;Removal mechanism;Typha angustifolia
摘要：
In this study, Box-Behnken design (BBD) was employed to optimize the process for H<inf>3</inf>PO<inf>4</inf>-activated Typha angustifolia activated carbon (TAC) production and Cr removal by TAC;the removal mechanisms were discussed based on TAC characterization, and the regeneration evaluation was also conducted. The optimum preparation conditions were activated time of 1.5 h, temperature of 469.02 °C, and incubation ratio of 4, resulting in an experimental carbon yield of 38.23% and Cr removal of 90.01%. The optimum adsorption parameters were found to be 0.02 g/50 mL TAC, 80 mg/L Cr(VI), and 2.21 pH with the observed Cr adsorption capacity of 59.54 mg/g. The removal mechanisms involved coulombic attraction, ionic exchange, surface complexation, and reduction. The process of Cr(VI) adsorption was feasible, spontaneous, and endothermic in nature, and the pseudo-second-order and Langmuir isotherm models were more appropriate for the removal process. After five adsorption/desorption cycles, the Cr adsorption capacity on TAC reduced by only 24.37%. The results showed that BBD could successfully optimize TAC production and Cr removal, and TAC could be developed as a promising, eco-friendly, and effective adsorbent for Cr pollution control.<br/> ©2018 by the authors.
语种：
英文
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红麻与黄麻在改良铅锌矿渣下的筛选与评价
作者：
龚紫薇;陈永华;陈基权;李建彬;何蔚;...
期刊：
中南林业科技大学学报 ,2018年38(5):121-128 ISSN：1673-923X
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, 410004;中国农业科学院麻类研究所, 湖南, 长沙, 410205;[龚紫薇; 陈永华; 李建彬; 何蔚; 汤春芳; 柳俊] 中南林业科技大学环境科学与工程学院, 湖南, 长沙, 410004;[陈基权] 中国农业科学院麻类研究所, 湖南, 长沙, 410205
关键词：
红麻;黄麻;筛选;铅锌矿;植物修复
摘要：
以30个红麻和黄麻品种为材料,在不同改良处理(对照,100%矿渣+少量磷肥;改良一,90%矿渣 +10%泥炭土+少量磷肥;改良二,80%矿渣+20%泥炭土+少量磷肥)下进行室外盆栽试验,测定了植物存活情况、生物量和植物各部位Pb、Zn含量及其积累总量,并根据植物Pb、Zn积累总量对30种红麻和黄麻进行聚类分析。结果表明:(1)30个品种中有25个品种可成活。(2)在对照处理下,25个红麻和黄麻品种的地上部、地下部生物量平均值为3.453 g和1.243 g;而在改良一处理下,其地上部、地下部生物量平均值为5.702 g和2.297 g;改良二处理下,地上部、地下部生物量平均值为9.271 g和3.210 g。(3)红麻和黄麻品种对Pb、Zn都具有一定的吸附能力,且地下部含量均大于地上部含量。除地上部Zn含量,红麻和黄麻重金属含量呈现对照组>改良组的趋势。(4)红麻和黄麻Pb平均积累总量分别为对照组3.18 mg、改良一4.06 mg、改良二4.75 mg;Zn平均积累总量分别为对照组2.43 mg、改良一3.80 mg、改良二5.80 mg。(5)红麻和黄麻的生物量、重金属含量、重金属积累总量受其品种(P < 0.01)、泥炭土添加量(P < 0.01)及两者交互作用(P < 0.01)的显著影响。根据聚类分析和方差验证,可以将30个品种红麻和黄麻分为Pb、Zn高积累型和低积累型两类。
语种：
中文
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Decontamination of Cr(VI) by graphene oxide@TiO2 in an aerobic atmosphere: effects of pH, ferric ions, inorganic anions, and formate
作者：
Hu, Xinjiang* ;Zhao, Yunlin* ;Wang, Hui;Cai, Xiaoxi;Hu, Xi;...
期刊：
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY ,2018年93(8):2226-2233 ISSN：0268-2575
通讯作者：
Hu, Xinjiang;Zhao, Yunlin
作者机构：
[Hu, Xi; Tang, Chunfang; Hu, Xinjiang; Zhao, Yunlin; Zhao, YL] Cent South Univ Forestry & Technol, Coll Environm Sci & Engn, Changsha 410004, Hunan, Peoples R China.;[Hu, Xinjiang; Zhao, Yunlin] Cent South Univ Forestry & Technol, Fac Life Sci & Technol, Changsha, Hunan, Peoples R China.;[Wang, Hui] Chinese Acad Agr Sci, Inst Bast Fiber Crops, Changsha, Hunan, Peoples R China.;[Yang, Yuanxiu] South China Agr Univ, Coll Nat Resources & Environm, Guangzhou, Guangdong, Peoples R China.;[Liu, Yunguo; Cai, Xiaoxi] Hunan Univ, Coll Environm Sci & Engn, Changsha, Hunan, Peoples R China.
通讯机构：
[Hu, XJ; Zhao, YL] C;Cent South Univ Forestry & Technol, Coll Environm Sci & Engn, Changsha 410004, Hunan, Peoples R China.
关键词：
Chemicals removal (water treatment);Decontamination;Gas adsorption;Graphene;Irradiation;Metal ions;pH effects;Titanium dioxide;Electron transfer pathways;Environmental conditions;Ferric ions;Formate;Hexavalent chromium;Inorganic anions;Nitrogen adsorption desorption isotherms;Wastewater characteristics;Chromium compounds;chromium;ferric ion;formic acid;graphene oxide;titanium dioxide;Article;comparative study;decontamination;field emission scanning electron microscopy;oxidation reduction reaction;pH;photocatalysis;surface area;synthesis;ultraviolet irradiation;ultraviolet radiation
摘要：
<jats:title>Abstract</jats:title><jats:sec><jats:title>BACKGROUND</jats:title><jats:p>In this study, a graphene oxide@TiO<jats:sub>2</jats:sub> composite (GO/TiO<jats:sub>2</jats:sub>) was prepared and characterized by SEM, EDX, XRD, nitrogen adsorption–desorption isotherm, and XPS. Photocatalytic reduction and removal of Cr(VI) using this composite in an aerobic atmosphere were studied under UV irradiation. The effects of pH, ferric ions, inorganic anions, and formate were investigated systematically.</jats:p></jats:sec><jats:sec><jats:title>RESULTS</jats:title><jats:p>The Cr(VI) reduction rate decreased with increasing solution pH. The presence of ferric ions in the system improved the photocatalytic reduction process. The effects of SO<jats:sub>4</jats:sub><jats:sup>2−</jats:sup> and PO<jats:sub>4</jats:sub><jats:sup>3−</jats:sup> on the process were higher than those of Cl<jats:sup>−</jats:sup> and NO<jats:sub>3</jats:sub><jats:sup>−</jats:sup>. Formate slightly inhibited adsorption of Cr(VI), while it improved Cr(VI) reduction. GO/TiO<jats:sub>2</jats:sub> has good stability and it maintained full photoreduction activity for at least three cycles.</jats:p></jats:sec><jats:sec><jats:title>CONCLUSION</jats:title><jats:p>The results indicated that GO/TiO<jats:sub>2</jats:sub> can thermodynamically reduce Cr(VI) to Cr(III) under UV light. Environmental conditions and wastewater characteristics (e.g. pH, ferric ions, inorganic anions, and formate) can influence the decontamination process because they affect the interactions between chromium ions and GO/TiO<jats:sub>2</jats:sub> and alter the electron‐transfer pathways. The results suggest that the GO/TiO<jats:sub>2</jats:sub> is an attractive material for removing hexavalent chromium from water using a photocatalytic process. © 2018 Society of Chemical Industry</jats:p></jats:sec>
语种：
英文
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东江上游高风险支流不同功能区初期雨水径流污染特征分析
作者：
张郁婷;陈永华;汤春芳;魏伟;李建彬;...
期刊：
生态环境学报 ,2017年26(11):1942-1949 ISSN：1674-5906
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;兰州交通大学市政工程学院, 甘肃, 兰州, 730070;[张郁婷; 陈永华; 汤春芳; 李建彬; 付雄略; 柳俊] 中南林业科技大学环境科学与工程学院, 湖南, 长沙, 410000;[魏伟] 兰州交通大学市政工程学院, 甘肃, 兰州, 730070
关键词：
初期雨水径流;功能区;径流污染;水质分析;东江
摘要：
了解不同外界条件下初期雨水径流污染物的变化是有效控制面源污染的重要基础。根据径流曲线法(SCS)对东江上游高风险支流区中农田区、交通道路区、住宅商业区和工业区4个不同功能区的初期雨水径流进行采样,按照国家标准水质分析方法进行监测,并对不同功能区初期雨水径流水质的变化规律及主要污染物的相关性进行分析。研究结果表明,降雨前期晴天数、降雨量、降雨强度对初期雨水径流水质变化均有明显影响。当前期晴天数多、雨量大且降雨强度大时,污染物质量浓度峰值出现的时间早、质量浓度下降趋势明显。随着降雨历时的延长,初期雨水径流主要污染物SS、COD_(Cr)、TN、TP及NH_3-N的质量浓度大都呈现下降趋势,且污染物质量浓度峰值大部分出现在前5 min。其中,SS质量浓度以农田区最高,相对于其他功能区,污染物质量浓度最高可达14倍之多。COD_(Cr)、TN、TP及NH_3-N质量浓度均以住宅商业区最高,最高分别可达1136、17.56、3.96、25.36 mg·L~(-1),相对于其他功能区而言,住宅商业区更易导致水质污染。从最典型降雨事件分析来看,只有交通道路区的COD_(Cr)、TP、TN与SS之间呈现正相关,其相关系数分别为0.775、0.798、0.826,其余3个功能区域的主要污染物之间则出现负相关,表明初期雨水具有复杂性,受多重外界因素影响。该研究结果对入江污染物负荷量控制及东江水环境保护具有一定的意义。
语种：
中文
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“环境规划与管理”课程教学改革与思考
作者：
汤春芳;李科林;张平
期刊：
岳阳职业技术学院学报 ,2017年32(2):61-64 ISSN：1672-738X
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,410004
关键词：
“环境规划与管理”课程;教学;实践;研究
摘要：
“环境规划与管理”与“环境规划学”“环境管理学”“环境影响评价”课程均属于高校环境工程专业、环境科学专业的主干课程,但彼此之间存在教学学时、内容等差别.通过对“环境规划与管理”课程的教学实践包括教学内容、课程设置、师资队伍、专业设置方面探讨发现,在短课时教学中,教师应注重理论教学内容的融会贯通,并使之与实践教学相结合,方能保证其教学质量.
语种：
中文
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Mechanisms underlying degradation pathways of microcystin-LR with doped TiO2 photocatalysis
作者：
Hu, Xi;Hu, Xinjiang* ;Tang, Chunfang* ;Wen, Shizhi;Wu, Xiaofu;...
期刊：
Chemical Engineering Journal ,2017年330:355-371 ISSN：1385-8947
通讯作者：
Hu, Xinjiang;Tang, Chunfang
作者机构：
[Hu, Xi; Tang, Chunfang; Hu, Xinjiang; Long, Jian; Wu, Xiaofu; Wen, Shizhi; Tang, CF; Yang, Xiong] Cent South Univ Forestry & Technol, Coll Environm Sci & Engn, Changsha 410004, Hunan, Peoples R China.;[Wang, Hui] Chinese Acad Agr Sci, Inst Bast Fiber Crops, Changsha 410205, Hunan, Peoples R China.;[Zhou, Lu] Changsha Univ Sci & Technol, Coll Hydraul Engn, Changsha 410004, Hunan, Peoples R China.
通讯机构：
[Hu, XJ; Tang, CF] C;Cent South Univ Forestry & Technol, Coll Environm Sci & Engn, Changsha 410004, Hunan, Peoples R China.
关键词：
Intermediates;Microcystin-LR;Photodegradation;Titanium dioxide;Water treatment
摘要：
The presence of cyanotoxins in different water sources, originating from cyanobacterial algal blooms, is a ubiquitous, global concern. Microcystins (MCs) are the most commonly occurring class of cyanbacterial toxin, and are characterized as cyclic heptapeptides containing five D-amino acids and two variable L-amino acids. Over 100 MC variants exist, and microcystin-LR (MC-LR) is one of the most hazardous and prevalent. Removing MC-LR from aqueous solutions by titanium dioxide (TiO2) photocatalysis has been proposed as a possible solution for this. Both metal and non-metal doped TiO2 photocatalysts have been investigated over recent decades for their MC-LR photocatalytic degradation properties under visible light. This review provides an overview of visible light-activated TiO2 synthesis technologies, and structural and electronical properties. The photocatalytic behavior of visible light-activated TiO2 for the photodegradation of MC-LR is discussed. The structural elucidation of reaction intermediates of the degradation pathways, and the mechanisms of MC-LR degradation by visible-light activated TiO2 in comparison with conventional UV-activated TiO2, is given particular emphasis. We also aimed to identify research gaps and uncertainties that exist for the use of visible light-activated TiO2 in photocatalysis. Additional research requirements for visible light-activated TiO2 photocatalysts and potential areas for future applications of doped TiO2 photocatalysts under visible light are also proposed. © 2017
语种：
英文
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Comparison of the removal and adsorption mechanisms of cadmium and lead from aqueous solution by activated carbons prepared from Typha angustifolia and Salix matsudana
作者：
Tang, Chunfang* ;Shu, Yan;Zhang, Riqing;Li, Xin;Song, Jinfeng;...
期刊：
RSC Advances ,2017年7(26):16092-16103 ISSN：2046-2069
通讯作者：
Tang, Chunfang
作者机构：
[Tang, Chunfang; Zhang, Yuting; Ou, Danling; Song, Jinfeng; Shu, Yan; Li, Bing] Cent South Univ Forestry & Technol, Coll Environm Sci & Engn, Changsha 410004, Hunan, Peoples R China.;[Zhang, Riqing] Cent South Univ Forestry & Technol, Coll Forest, Changsha 410004, Hunan, Peoples R China.;[Li, Xin] Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Hunan, Peoples R China.
通讯机构：
[Tang, Chunfang] C;Cent South Univ Forestry & Technol, Coll Environm Sci & Engn, Changsha 410004, Hunan, Peoples R China.
摘要：
Activated carbon adsorption is a promising technique for treatment of low-concentration heavy metal pollutants with high efficiency, simple operation, and flexibility;however, the cost of commercial activated carbon is too high. Therefore, much attention has been paid to activated carbon derived from low-cost agricultural and forest wastes. In this work, adsorption of Cd and Pb in aqueous solutions were conducted through batch experiments using Typha angustifolia carbon (TC) and Salix matsudana carbon (SC) prepared by phosphoric acid activation, and the adsorbents were characterized using SEM, FTIR, XPS, elemental analyzer, BET surface area, and zeta potential measurements. Both TC and SC mainly encompassed mesopores and bonds of O-H, C-O, C=O, and P=O/P-O-C. The BET surface area and isoelectric point (pH<inf>IEP</inf>) of TC and SC was 130.42 and 234.42 m<sup>2</sup>g<sup>−1</sup>and 3.45 and 4.38, respectively. The adsorption capacity of Cd and Pb for TC and SC both relied positively on the pH and humic acid but negatively on NaCl in the media. The adsorption process was spontaneous and endothermic, involved physicochemical reactions, and fitted well with the pseudo second-order and Langmuir models. Both the intraparticle diffusion and the chemical reaction were the rate limiting steps during adsorption. The maximum sorption capacity of Cd and Pb was 48.08 and 61.73 mg g<sup>−1</sup>(TC) and 40.98 and 58.82 mg g<sup>−1</sup>(SC), respectively, at pH 5 and 25 °C. The adsorption-desorption results showed that both activated carbons had good regeneration and reusability properties. The results suggested that both TC and SC had potential applications in the removal of Cd and Pb from aqueous solutions. ©The Royal Society of Chemistry.
语种：
英文
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环境工程专业教学运行与管理实践——以中南林业科技大学为例
作者：
汤春芳;李科林;张平
期刊：
新课程研究：中旬 ,2017年(06):22-24 ISSN：1671-0568
作者机构：
中南林业科技大学林学院;中南林业科技大学环境科学与工程学院
关键词：
环境工程;教学运行;管理;实践
摘要：
我国高等院校本科专业评估一级指标体系包括专业定位与规划、师资队伍、教学条件、教学运行与管理、培养质量5个方面.高校本科教学质量的高低除了与教育部、学校教育政策、制度、规划、措施以及教学条件密切相关外,教学运行及其过程管理处于举足轻重的地位.本文以中南林业科技大学环境工程专业为例,综述了中南林业科技大学环境工程专业课程理论教学、实践教学、教学研究及其管理实践模式,旨在为相关高校环境工程专业教学运行与管理提供参考和借鉴.
语种：
中文
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Exogenous spermidine enhanced Pb tolerance in Salix matsudana by promoting Pb accumulation in roots and spermidine, nitric oxide, and antioxidant system levels in leaves
作者：
Tang, Chunfang;Song, Jinfeng;Hu, Xi;Hu, Xinjiang* ;Zhao, Yunlin* ;...
期刊：
Ecological Engineering ,2017年107:41-48 ISSN：0925-8574
通讯作者：
Hu, Xinjiang;Zhao, Yunlin
作者机构：
[Hu, Xi; Tang, Chunfang; Hu, Xinjiang; Ou, Danling; Zhao, YL; Peng, Lei; Song, Jinfeng; Li, Bing] Cent South Univ Forestry & Technol, Coll Environm Sci & Engn, Changsha 410004, Hunan, Peoples R China.;[Hu, Xinjiang; Zhao, Yunlin; Zhao, YL] Cent South Univ Forestry & Technol, Coll Life Sci & Technol, Changsha 410004, Hunan, Peoples R China.
通讯机构：
[Hu, XJ; Zhao, YL] C;Cent South Univ Forestry & Technol, Coll Environm Sci & Engn, Changsha 410004, Hunan, Peoples R China.;Cent South Univ Forestry & Technol, Coll Life Sci & Technol, Changsha 410004, Hunan, Peoples R China.
关键词：
Accumulation;Antioxidant syste;Lead;Salix matsudana;Spermidine;Tolerance
摘要：
The protective role of spermidine addition in media to Salix matsudana exposed to Pb was investigated by a hydroponic experiment in this study. The application of spermidine enhanced the biomass of S. matsudana exposed to Pb. Pb induced an increase in Pb levels in all organs of S. matsudana with the order of roots (maximum of 27616.0 mg/kg DW) > cuttings > twigs > leaves. Exogenous spermidine promoted the accumulation of Pb in the roots, but inhibited the Pb translocation to the shoots and thus the Pb content in the twigs and leaves. The Pb-induced decrease in the concentrations of spermidine, soluble protein, and nitric oxide was elevated by the application of spermidine in the leaves of S. matsudana. Exogenous spermidine could also effectively up-regulate the antioxidative capacity and reduced the accumulation of superoxide anion, hydrogen peroxide, malondialdehyde, and putrescine. The results suggested that S. matsudana could accumulate a high level of Pb in the roots, and exogenous spermidine could enhance S. matsudana tolerance to Pb by the synergistic promotion of Pb accumulation in the roots and the levels of spermidine, nitric oxide, and antioxidants in the leaves. ©2017 Elsevier B.V.
语种：
英文
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外源物质对植物积累重金属的调控作用
作者：
舒艳;李冰;汤春芳
期刊：
湖北理工学院学报 ,2016年32(1):8-11+40 ISSN：2095-4565
作者机构：
中南林业科技大学环境科学与工程学院;[李冰] 湖南新九方科技有限公司;[舒艳; 汤春芳] 中南林业科技大学
关键词：
多胺;植物;重金属;累积
摘要：
采用文献调研的方法,在概述重金属在植物体内的累积与分布研究概况的基础上,综述了外源物质对植物累积重金属的影响,以期为提高环境重金属污染的植物修复效率提供科学依据. 文献分析表明:①重金属在植物中的积累和分布会随金属种类、植物器官与细胞的不同而各异;细胞壁对重金属的固定与液泡对重金属的区隔化是耐性植物重金属细胞分布的主要方式. ②螯合剂、表面活性剂、多胺等对植物体内重金属的累积和分布有一定的调控作用,在重金属污染植物修复应用中,可以考虑添加外源物质以提高修复效率.
语种：
中文
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狭叶香蒲绒纤维对油的吸附与机理
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
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Single and competitive adsorption of Cd(II) and Pb(II) from aqueous solution by activated carbon prepared with Salix matsudana Kiodz
作者：
Shu, Yan* ;Li, Kelin;Song, Jinfeng;Li, Bing;Tang, Chunfang
期刊：
Water Science and Technology ,2016年74(12):2751-2761 ISSN：0273-1223
通讯作者：
Shu, Yan
作者机构：
[Tang, Chunfang; Li, Kelin; Shu, Yan; Li, Bing] Cent South Univ Forestry & Technol, Coll Environm Sci & Engn, Changsha 410004, Hunan, Peoples R China.;[Song, Jinfeng] Shanxi Zhonghuan Ruide Environm Engn Technol Co L, Taiyuan 030009, Shanxi, Peoples R China.
通讯机构：
[Shu, Yan] C;Cent South Univ Forestry & Technol, Coll Environm Sci & Engn, Changsha 410004, Hunan, Peoples R China.
关键词：
activated carbon;adsorption characteristics;competitive adsorption;Cd(II);Pb(II);Salix matsudana
摘要：
In this study, Salix matsudana activated carbon (SAC) was prepared by phosphoric acid activation, and the adsorption characteristics of Cd(II) and Pb(II) on SAC in single-and double-component solutions were investigated. In both systems, the adsorption capacities of both ions on SAC increased with the increasing initial pH value and temperature in the solutions, and the adsorption equilibrium was approached at 10 min. The adsorption process was spontaneous, endothermic, and depicted well by the pseudo-second-order adsorption model, and the equilibrium adsorption fitted reasonably well with the Langmuir isotherm. The maximum adsorption capacity (Q(m)) of Cd(II) and Pb (II) was 58.48 and 59.01 mg/g, respectively, in the single-element systems. However, it reduced to 25.32 and 31.09 mg/g, respectively, in the double-element system. The physicochemical property analysis showed that the specific surface area, total pore volume, and average pore diameter of SAC was 435.65 m(2)/g, 35.68 mL/g, and 3.86 nm, respectively. The SAC contained groups of -OH, C=O, and P=O. Results suggest that SAC had a good performance for the adsorption of Cd(II) and Pb(II) from solution, and the adsorption selectivity sequence was Pb(II) > Cd(II).
语种：
英文
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