LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 6 of total 6

Search options

  1. Article ; Online: Highly Effective Lead Ion Adsorption by Manganese-Dioxide-Supported Core-Shell Structured Magnetite

    Haipeng Zhang / Shiyong Chen / Yuhua Shan / Xiaoqing Qian / Yanju Yang / Juanjuan Wang

    Frontiers in Environmental Science, Vol

    2022  Volume 10

    Abstract: In this research, a magnetic core-shell composite, consisting of a Fe3O4 core and a silica shell (called Fe3O4@SiO2), was developed and then functionalized via MnO2 grafting at different MnO2 deposition levels (termed Fe3O4@SiO2-MnO2). The resulting ... ...

    Abstract In this research, a magnetic core-shell composite, consisting of a Fe3O4 core and a silica shell (called Fe3O4@SiO2), was developed and then functionalized via MnO2 grafting at different MnO2 deposition levels (termed Fe3O4@SiO2-MnO2). The resulting materials were characterized by X-ray fluorescence, X-ray diffraction, a vibration sample magnetometer, transmission electron microscopy, N2 adsorption-desorption, zeta-potential studies and X-ray photoelectron spectroscopy. Visualizations showed that Fe3O4@SiO2-MnO2 had a magnetite core with size of 100 nm, overlaid by a rough silica shell and a relatively loose MnO2 deposition. The Pb(II) adsorption onto the composites was also assessed. It was found that MnO2 deposition on the Fe3O4@SiO2 surface enhanced Pb(II) adsorption, and the Pb(II) adsorption amount was highly correlated to the MnO2 deposition level. The adsorption kinetics of Pb(II) followed pseudo-second-order kinetics, and the adsorption rate could be decreased by increasing the initial concentration of Pb(II). A higher pH resulted in enhanced Pb(II) adsorption, which slightly increased with the coexistence of Na+ and Ca2+, along with the presence of dissolved humic acid. The adsorbent could easily be separated and recovered under the action of the external magnetic component and it displayed stable adsorption behaviour over four adsorption-desorption periods. The results emphasize the high potential of Fe3O4@SiO2-MnO2 materials for the adsorptive removal of Pb(II) in water.
    Keywords lead removal ; adsorption ; Fe3O4@SiO2 ; MnO2 grafting ; water treatment ; Environmental sciences ; GE1-350
    Subject code 620
    Language English
    Publishing date 2022-05-01T00:00:00Z
    Publisher Frontiers Media S.A.
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    Full text online

    More links

    Kategorien

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  2. Article ; Online: Nanoscale molybdenum oxide improves plant growth and increases nitrate utilisation in rice (Oryza sativa L.)

    Haipeng Zhang / Rui Wang / Zhiqing Chen / Jialing Pu / Juanjuan Wang / Hongcheng Zhang / Yanju Yang

    Food and Energy Security, Vol 11, Iss 2, Pp n/a-n/a (2022)

    2022  

    Abstract: Abstract Nanoscale molybdenum oxide (nano‐MoO3) is widely used in industrial and environmental fields and its release to the environment is increasing. However, the potential effect of nano‐MoO3 on rice (Oryza sativa L.) seedling growth is unclear. ... ...

    Abstract Abstract Nanoscale molybdenum oxide (nano‐MoO3) is widely used in industrial and environmental fields and its release to the environment is increasing. However, the potential effect of nano‐MoO3 on rice (Oryza sativa L.) seedling growth is unclear. Herein, the different impacts of vaired concentrations (0, 50, 100, 200 and 300 μg Mo L–1) of Na2MoO4 and nano‐MoO3 on the growth and nitrate (NO3–) utilisation of rice were investigated using hydroponics. The Mo concentration in roots and shoots, N metabolism enzyme activity, root morphology, root redox ability and root exudates were then analysed to understand the potential mechanisms of the growth impacts. Results showed that the Mo concentration in rice roots increased incrementally as the amount of Mo application increased, whereas different Mo sources did not affect the Mo concentration in shoots. Both Na2MoO4 and nano‐MoO3 promoted the growth and NO3– utilisation of rice. The promotion effects of higher nano‐MoO3 dosages were better than those of Na2MoO4. Nano‐MoO3 application significantly affected the activity of nitrate reductase (NR), glutamine synthetase (GS) and glutamate synthase (NADH‐GOGAT), which in turn promoted NO3– assimilation. Additionally, rice seedlings treated with nano‐MoO3 had a relatively high rice root volume, surface area, total absorption area, active absorption area, low‐molecular‐weight organic acids, root oxidation and reduction capacities. Based on these results, it is proposed that nano‐MoO3 facilitates rice growth and NO3– assimilation via the enhancement of nitrogen metabolism enzyme activity and the promotion of good root morphological and physiological characters with high root secretion concentration and redox ability. This study provides insights regarding the further application of nano‐MoO3 in agriculture enhancing N use efficiency and rice productivity.
    Keywords nanoscale molybdenum oxide ; nitrate utilisation ; rice raising ; root exudate ; root morphologies ; Agriculture ; S ; Agriculture (General) ; S1-972
    Subject code 580
    Language English
    Publishing date 2022-05-01T00:00:00Z
    Publisher Wiley
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    Full text online

    More links

    Kategorien

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  3. Article ; Online: The Effect of Zinc Oxide Nanoparticles for Enhancing Rice ( Oryza sativa L.) Yield and Quality

    Haipeng Zhang / Rui Wang / Zhiqing Chen / Peiyuan Cui / Hao Lu / Yanju Yang / Hongcheng Zhang

    Agriculture, Vol 11, Iss 1247, p

    2021  Volume 1247

    Abstract: Zinc oxide nanoparticles (ZnO NPs) have been applied widely in agriculture, and many studies were conducted to evaluate the effect of ZnO NPs on plant growth. So far, few studies have been investigated with regard to the potential effect of ZnO NPs on ... ...

    Abstract Zinc oxide nanoparticles (ZnO NPs) have been applied widely in agriculture, and many studies were conducted to evaluate the effect of ZnO NPs on plant growth. So far, few studies have been investigated with regard to the potential effect of ZnO NPs on cereal yield formation or Zn content in grains. Herein, we used a pot experiment, which was conducted involving five dosages of Zn (0.3, 0.6, 1.2, 2.4, and 4.8 g Zn pot −1 ), to evaluate the impacts which ZnO NPs made in rice yield, dry matter accumulation, rice quality and grain Zn contents. The results demonstrated that ZnO NPs increased the production of grain, dry matter accumulation and particulate Zn content. Compared with control treatment, ZnO NPs application presented higher rice yield with more panicle number (4.83–13.14%), spikelets per panicle (4.81–10.69%), 1000-grain weight (3.82–6.62%) and filled grain rate (0.28–2.36%). Additionally, the dry jointing, heading and mature periods, LAI, SPAD values, and photosynthetic potentials of ZnO NPs were all significantly higher relative to treatment without ZnO NPs. The more photosynthetic substances and higher dry matter accumulated in the whole rice growing stage resulted in higher rice grain yield. Furthermore, ZnO NPs increased brown rice rate, milled rice rate, head rice rate, chalkiness size, chalkiness grain rate, chalkiness degree, amylose content and protein content, improving rice processing and appearance qualities. For the Zn nutrition in rice grain, ZnO NPs application significantly increased the Zn content of edible polished rice and promoted the relocation of Zn from the aleurone layer. This study effectively demonstrated that ZnO NPs could be a potential high-performed fertiliser for enhancing rice yield and quality.
    Keywords Zinc oxide nanoparticles ; yield formation ; rice quality ; photosynthetic potential ; Agriculture (General) ; S1-972
    Subject code 669
    Language English
    Publishing date 2021-12-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    Full text online

    More links

    Kategorien

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  4. Article ; Online: Enhanced removal of heavy metal ions from aqueous solution using manganese dioxide-loaded biochar

    Haipeng Zhang / Fangfang Xu / Jinyuan Xue / Shiyong Chen / Juanjuan Wang / Yanju Yang

    Scientific Reports, Vol 10, Iss 1, Pp 1-

    Behavior and mechanism

    2020  Volume 13

    Abstract: Abstract In this study, a redox precipitation method was used to load manganese dioxide (MnO2) nanoparticles on biochar (BC) (BC@MnO2) pyrolyzed from the invasive water hyacinth, and the adsorption of Cd(II),Cu(II), Zn(II), and Pb(II) was investigated. ... ...

    Abstract Abstract In this study, a redox precipitation method was used to load manganese dioxide (MnO2) nanoparticles on biochar (BC) (BC@MnO2) pyrolyzed from the invasive water hyacinth, and the adsorption of Cd(II),Cu(II), Zn(II), and Pb(II) was investigated. Several techniques were used to characterize the adsorbents. The results revealed that the BC surface was covered by many intertwined thin amorphous MnO2 nanosheets, which significantly increased its specific surface area and pore volume. The adsorption of heavy metal ions by BC was negligible, whereas the MnO2-containing adsorbents exhibited a high capacity for adsorbing heavy metal ions. However, the MnO2-normalized adsorption amount decreased with increasing MnO2 load and was largely unchanged at MnO2 loads of 26.6% to 30.2%. The capacity for adsorbing heavy metal ions of BC@MnO2 was pH-dependent, but the adsorption affinity was unaffected by coexisting ions. Column tests revealed that BC@MnO2 with a load of 26.6% had a high capacity for removing heavy metal ions from simulated and real electroplating wastewater. Therefore, BC@MnO2 with a load of 26.6% shows promise as a regenerable adsorbent for removing heavy metal ions from water/wastewater. This study could lay an essential foundation to develop a win-win strategy for heavy metal ions removal from wastewater using biochar derived from water hyacinth.
    Keywords Medicine ; R ; Science ; Q
    Language English
    Publishing date 2020-04-01T00:00:00Z
    Publisher Nature Publishing Group
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    Full text online

    More links

    Kategorien

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  5. Article ; Online: Atmospheric nitrogen deposition in Yangtze River Delta

    Zhili CHEN / Tao HUANG / Rong FAN / Hao YANG / Yanju YANG / Changchun HUANG

    Atmospheric and Oceanic Science Letters, Vol 13, Iss 3, Pp 202-

    insights gained from the nitrogen content and isotopic composition of the moss Haplocladium microphyllum

    2020  Volume 209

    Abstract: Simple and inexpensive estimation of the rates and sources of atmospheric nitrogen (N) deposition is critical for its effective mitigation in a region with different land-use types. In this study, the N content and N isotopic composition (δ15N) of moss ( ... ...

    Abstract Simple and inexpensive estimation of the rates and sources of atmospheric nitrogen (N) deposition is critical for its effective mitigation in a region with different land-use types. In this study, the N content and N isotopic composition (δ15N) of moss (Haplocladium microphyllum) tissues and precipitation at six sites with three land-use types (urban, suburban, and rural) were measured in the Yangtze River Delta. A significant linear relationship between moss N content and wet N deposition, and a consistent decrease trend for moss N content and wet N deposition from urban to suburban to rural areas were observed. More negative δ15N of suburban and rural mosses indicated N mainly released from agriculture and effluent, while the less negative δ15N of urban mosses were mainly influenced by fossil fuel combustion and traffic emissions. Although the negative moss δ15N indicates that reduced N dominates wet N deposition, there was no significant correlation between moss δ15N and the ratio of ammonium to nitrate (NH4+/NO3−). These results reveal that the moss N content and δ15N can be used as a complementary tool for estimating the rates and sources of wet N deposition in a region with different land-use types.
    Keywords epilithic mosses ; nitrogen content ; nitrogen isotope ; atmospheric wet nitrogen deposition ; sources ; Environmental sciences ; GE1-350 ; Oceanography ; GC1-1581
    Subject code 910
    Language English
    Publishing date 2020-05-01T00:00:00Z
    Publisher KeAi Communications Co., Ltd.
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    Full text online

    More links

    Kategorien

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  6. Article: The control of Fusarium oxysporum in soil treated with organic material under anaerobic condition is affected by liming and sulfate content

    Meng, Tianzhu / Yanju Yang / Zucong Cai / Yan Ma

    Biology and fertility of soils. 2018 Feb., v. 54, no. 2

    2018  

    Abstract: Five treatments were applied: control (CK), reductive soil disinfestation (RSD) using alfalfa as organic material (RSD₀), liming before RSD₀ (RSD₁), adding potassium sulfate before RSD₀ (RSD₂), and adding lime and potassium sulfate before RSD₀ (RSD₃). ... ...

    Abstract Five treatments were applied: control (CK), reductive soil disinfestation (RSD) using alfalfa as organic material (RSD₀), liming before RSD₀ (RSD₁), adding potassium sulfate before RSD₀ (RSD₂), and adding lime and potassium sulfate before RSD₀ (RSD₃). Then, RSD-treated soils were inoculated with Fusarium oxysporum or not inoculated, and control soils were not inoculated. Cucumber was then cultivated for one season in all treatments. Soil pH increased after RSD treatments and then decreased after cucumber harvesting. Soil SO₄²⁻ content decreased after RSD treatments but then returned to its initial level during cultivation. The abundance of F. oxysporum significantly decreased after all RSD treatments, but it increased in the liming and high SO₄²⁻ content RSD treatments (RSD₁–₃) over the course of the growing season. The cucumber plants were infected by the pathogen in the CK and F. oxysporum-inoculated RSD treatments with high SO₄²⁻ content but were not infected in the RSD treatment without SO₄²⁻ addition. The RSD treatment without liming or SO₄²⁻ addition had the lowest relative abundance of potential pathogens (i.e., Fusarium and Penicillium) and the highest relative abundance of potential antagonists (i.e., Chaetomium). In conclusion, soil microbial biomass increased, and microbial community composition changed to become more suppressive to pathogens after the RSD treatment. The high SO₄²⁻ content influenced the microbial composition and weakened the ability of the soil treated with RSD to suppress disease.
    Keywords Chaetomium ; Fusarium oxysporum ; Penicillium ; alfalfa ; antagonists ; community structure ; cucumbers ; disinfestation ; growing season ; harvesting ; liming ; microbial biomass ; microbial communities ; pathogens ; potassium sulfate ; soil microorganisms ; soil pH
    Language English
    Dates of publication 2018-02
    Size p. 295-307.
    Publishing place Springer Berlin Heidelberg
    Document type Article
    ZDB-ID 742137-0
    ISSN 1432-0789 ; 0178-2762
    ISSN (online) 1432-0789
    ISSN 0178-2762
    DOI 10.1007/s00374-017-1260-7
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

    In stock of ZB MED Bonn / Germany

    Z 4249: Show issues

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

To top