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  1. AU="Nesan, Daniel"
  2. AU="Ueda, Takashi"
  3. AU="Yuan, Jiacheng"
  4. AU="Kahama, C B"
  5. AU="D’Alessio, Roberto"
  6. AU="Reuhl, Kenneth"
  7. AU="Seeleman, Conny"
  8. AU="Delaquis, Pascal"
  9. AU="Bommineni, Gopal R"
  10. AU="Kuhn, Cynthia M."
  11. AU="Olson, Jason C"
  12. AU="Buchholz, V."
  13. AU="Urquhart, Bradley L"
  14. AU="Ezaki, Kazune"
  15. AU="Choi, Jong Hyun"
  16. AU="Xie, Qiaowei"
  17. AU=Rojas-Marte G AU=Rojas-Marte G
  18. AU="Belli, A"
  19. AU="Moolman, M Charl"
  20. AU="Mazzoni, Stefania"
  21. AU=Stryjewski Martin E
  22. AU=Vallon Volker AU=Vallon Volker
  23. AU="Knowland, K E"
  24. AU="Beker, M. G."

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  1. Artikel ; Online: Exponential decay: an approach to model nutrient uptake rates of macrophytes.

    Nesan, Daniel / Chan, Derek Juinn Chieh

    International journal of phytoremediation

    2021  Band 23, Heft 14, Seite(n) 1519–1524

    Abstract: One of the challenges of integrating phytoremediation into a waste treatment system is the sensitivity of plant species to fluctuations in environmental conditions and the difficulty in estimating subsequent changes to their rates of uptake. In this ... ...

    Abstract One of the challenges of integrating phytoremediation into a waste treatment system is the sensitivity of plant species to fluctuations in environmental conditions and the difficulty in estimating subsequent changes to their rates of uptake. In this study, we examine a method using the exponential decay equation to approximate the median uptake rate (MUR) of nutrients for three aquatic macrophyte species,
    Mesh-Begriff(e) Araceae ; Biodegradation, Environmental ; Nutrients ; Salinity ; Waste Water ; Water Pollutants, Chemical/analysis
    Chemische Substanzen Waste Water ; Water Pollutants, Chemical
    Sprache Englisch
    Erscheinungsdatum 2021-04-29
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ZDB-ID 2055357-2
    ISSN 1549-7879 ; 1522-6514
    ISSN (online) 1549-7879
    ISSN 1522-6514
    DOI 10.1080/15226514.2021.1915955
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  2. Artikel: Exponential decay: an approach to model nutrient uptake rates of macrophytes

    Nesan, Daniel / Chan, Derek Juinn Chieh

    International journal of phytoremediation. 2021 Dec. 6, v. 23, no. 14

    2021  

    Abstract: One of the challenges of integrating phytoremediation into a waste treatment system is the sensitivity of plant species to fluctuations in environmental conditions and the difficulty in estimating subsequent changes to their rates of uptake. In this ... ...

    Abstract One of the challenges of integrating phytoremediation into a waste treatment system is the sensitivity of plant species to fluctuations in environmental conditions and the difficulty in estimating subsequent changes to their rates of uptake. In this study, we examine a method using the exponential decay equation to approximate the median uptake rate (MUR) of nutrients for three aquatic macrophyte species, Salvinia molesta, Spirodela polyrhiza, and Lemna minor. These MUR values were then used to directly evaluate the phytoremediation performance between species and at varying levels of salinity stress. The results of this study indicate that an exponential decay relationship produced the most accurate models of the nutrient uptake profile for each species, with highest correlation values in 74.1% of tests for the three species at increasing salinity over a period of 14 d. S. polyrhiza and L. minor began to show significant reductions in nutrient uptake and growth at salinity concentration above 10 g/L. Using MUR, direct comparisons can be made between species in a time and mass-independent manner, allowing for the rapid assessment of phytoremediation performance under conditions of increasing salinity stress. Novelty statement In this study, we propose the use of an exponential decay model and the use of median uptake rate (MUR) obtained from the model coefficients as a method for directly comparing species performance under different conditions. Subsequently, we show how the use of MUR values obtained from three species of aquatic macrophytes allows for the direct comparison of species performance under increasing salinity stress. The method proposed in this study would improve the ability for easy comparison between species performance under varying environmental conditions. Future works could further build on the parameters proposed in this study and optimize the performance of phytoremediation systems developed for nutrient-affected wastewater management. This study is especially beneficial to phytoremediation researchers and environmental engineers who are implementing or designing macrophyte phytoremediation systems.
    Schlagwörter Lemna minor ; Salvinia molesta ; Spirodela polyrhiza ; equations ; macrophytes ; models ; nutrient uptake ; phytoremediation ; rapid methods ; salinity ; salt stress ; wastewater treatment
    Sprache Englisch
    Erscheinungsverlauf 2021-1206
    Umfang p. 1519-1524.
    Erscheinungsort Taylor & Francis
    Dokumenttyp Artikel
    ZDB-ID 2055357-2
    ISSN 1549-7879 ; 1522-6514
    ISSN (online) 1549-7879
    ISSN 1522-6514
    DOI 10.1080/15226514.2021.1915955
    Datenquelle NAL Katalog (AGRICOLA)

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  3. Artikel: Nutrient uptakes and biochemical composition of Lemna minor in brackish water

    Nesan, Daniel / Selvabala, Kethis / Chan Juinn Chieh, Derek

    Aquaculture research. 2020 Sept., v. 51, no. 9

    2020  

    Abstract: The freshwater plant species Lemna minor suffers significantly in nutrient uptake and biomass accumulation performance when grown in saline effluents, such as those produced in brackish aquaculture operations. To determine the exact impact of salinity to ...

    Abstract The freshwater plant species Lemna minor suffers significantly in nutrient uptake and biomass accumulation performance when grown in saline effluents, such as those produced in brackish aquaculture operations. To determine the exact impact of salinity to these plant traits, this study measured the nutrient uptakes and biochemical composition of L. minor grown in synthetic aquaculture medium of increasing salinity levels. The overall trend for biomass growth showed that higher salinity levels resulted in lower growth with a mass gain of about 13% in 12.5 ppt medium compared with 96% in the control. However, the NO₃– uptake appeared to be unaffected by differences in salinity. NH₄⁺ uptake was significantly affected only at salinity concentrations of 10 ppt and 12.5 ppt. The relationship between PO₄³– uptake and salinity was less clear, as PO₄³– levels appeared to decrease linearly for all test groups and were shown to be statistically insignificant. At the end of the experiment period, the control medium showed the lowest measured COD levels, 17 mg/L while the 12.5 ppt solution has the highest COD level, 61 mg/L. Protein content showed a decline with increasing salinity of growth medium, while carbohydrate content was shown to be increasing. These preliminary data identify the general relationship between salinity and the measured criteria of L. minor and will subsequently serve as the basis for further remediation studies and the development of salinity mitigation methods.
    Schlagwörter Lemna minor ; ammonium ; aquaculture ; biomass production ; brackish water ; carbohydrate content ; chemical oxygen demand ; culture media ; effluents ; freshwater ; nitrates ; nutrient uptake ; phosphates ; protein content ; remediation ; salinity
    Sprache Englisch
    Erscheinungsverlauf 2020-09
    Umfang p. 3563-3570.
    Erscheinungsort John Wiley & Sons, Ltd
    Dokumenttyp Artikel
    Anmerkung JOURNAL ARTICLE
    ZDB-ID 1227359-4
    ISSN 1355-557X
    ISSN 1355-557X
    DOI 10.1111/are.14693
    Datenquelle NAL Katalog (AGRICOLA)

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