scholarly journals Phytoremediation of Effluents Contaminated with Heavy Metals by Floating Aquatic Macrophytes Species

2019 ◽  
Author(s):  
Cleide Barbieri de Souza ◽  
Gabriel Rodrigues Silva
Keyword(s):  
Heavy Metals ◽  
Aquatic Macrophytes

Peculiarities of Accumulation of Heavy Metals by Aquatic Macrophytes of the Lakes of Kyiv and Assessment of Their Bioremediation Capacity

2021 ◽  
Vol 57 (4) ◽  
pp. 64-74
Author(s):  
O. O. Pasichna ◽  
L. O. Gorbatiuk ◽  
M. O. Platonov ◽  
S. P. Burmistrenko ◽  
O. O. Godlevska ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Aquatic Macrophytes

Concurrent removal and accumulation of heavy metals by the three aquatic macrophytes

2008 ◽  
Vol 99 (15) ◽  
pp. 7091-7097 ◽  
Author(s):  
Virendra Kumar Mishra ◽  
B.D. Tripathi
Keyword(s):  
Heavy Metals ◽  
Aquatic Macrophytes

scholarly journals Effects of the Urea and Heavy Metals (Ni2+ and Cu2+) Higher Concentrations on Aquatic Macrophytes (Egeria densa Planch. as a Study Case)

2015 ◽  
pp. 55-63
Author(s):  
Keyword(s):  
Oxidative Stress ◽  
Heavy Metals ◽  
Photosynthetic Pigments ◽  
Aquatic Macrophytes ◽  
Copper Concentration ◽  
Aquatic Macrophyte ◽  
Egeria Densa ◽  
Water Weed ◽  
Study Case ◽  
Nickel Lead

Urea and heavy metals (Ni2+ and Cu2+) higher concentration infl uence on the photosynthetic pigments’ content, lipids peroxidation intensity and urease ferments activity in the submerged aquatic macrophyte – Egeria densa Planch. have been studied. It has been shown that addition of metals to the medium with urea tends to strengthen its toxic effect upon plants. It has been found that four-day long hatching of plants in the medium with urea and nickel lead to the oxidative stress development in Canada water weed leaves. Copper concentration equal to 100 mkmol/l appeared to be lethal for plants.

scholarly journals Interaction between Cadmium and Manganese in Aquatic Macrophytes (Illustrated by Elodea Canadensis)

2016 ◽  
pp. 82
Author(s):  
Keyword(s):  
Heavy Metals ◽  
Chlorophyll Fluorescence ◽  
Quantum Efficiency ◽  
Photosynthetic Pigments ◽  
Aquatic Macrophytes ◽  
Aquatic Plant ◽  
Aquatic Macrophyte ◽  
Mutual Effect ◽  
Elodea Canadensis ◽  
Model Systems

The mutual effect of two heavy metals – toxic (Cd2+) and essential (Mn2+) on the aquatic plant was studied in model systems. Experiments were performed on submerged aquatic macrophyte – Elodea canadensis Michx. Elodea shoots (10–15 cm in length) were incubated for 5 days in a nutrient solution with CdSO4 and MnSO4 at the concentration of 100 μmoles (added separate and combined). The following characteristics were analyzed in Elodea leaves: the accumulation of Cd2+ and Mn2+; the content of photosynthetic pigments and its ratio; the level of chlorophyll fluorescence (quantum efficiency, Fv/Fm). Incubation of Elodea plants with Cd2+ increased its content by more than 1000 times compared to the control. Incubation with Mn2+ increased its content by 10 times. The combined effect of cadmium and manganese reduced Cd2+ accumulation in the Elodea leaves almost in 2 times in comparison with its separate action, while the Mn2+ accumulation was decreased only by 40 %. Under the cadmium action the content of all photosynthetic pigments was decreased, while by the manganese action – only chlorophylls were reduced. It was shown that Mn2+ mitigated Cd2+ toxicity. The content of chlorophyll a, carotenoids and quantum efficiency (Fv/Fm) was decreased to the lesser degree than under the separate cadmium action. Probably this is caused by the inhibition of its uptake in the presence of manganese.

Assessment of a Possibility of the Use of Aquatic Macrophytes for Biomonitoring and Phytoindication of the Contamination of Natural Waters by Heavy Metals

2020 ◽  
Vol 56 (1) ◽  
pp. 81-89
Author(s):  
Ye. A. Pasichnaya ◽  
L. O. Gorbatiuk ◽  
O. M. Arsan ◽  
N. A. Platonov ◽  
S. P. Burmistrenko ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Aquatic Macrophytes ◽  
Natural Waters

Advances in Stress Factors of Aquatic Macrophytes in Polluted Water

2014 ◽  
Vol 675-677 ◽  
pp. 61-66
Author(s):  
Cui Ying Zhang ◽  
Li Ping Wang
Keyword(s):  
Heavy Metals ◽  
Aquatic Macrophytes ◽  
Suspended Sediments ◽  
Stress Factors ◽  
Research Progress ◽  
Polluted Water ◽  
Complex Relationship ◽  
Obvious Effect ◽  
Existing Problems ◽  
Nutritive Salt

Aquatic macrophytes are of significant importance for polluted water restoration.This paper reviews current research progress of stress factors for aquatic macrophytes growth and analyzes existing problems. Factors including nutritive salt, suspended sediments and deposited sediments had an obvious effect on aquatic macrophytes growth, and the impacts of light intensity, heavy metals, temperature and pH on the growth of aquatic macrophytes were little than that of the above factors. The problems existed in present researches were: dynamic and quantificational studies of the impacts of some stress factors on aquatic macrophytes growth were insufficient, there was lack of integrated investigations considering several factors which were of complex relationship.

scholarly journals Studies of selective adsorption, desorption and reuse of chemically altered biomass produced from aquatic macrophytes for treatment of metal-containing wastewater

2017 ◽  
Vol 75 (9) ◽  
pp. 2083-2093 ◽  
Author(s):  
Rachel de Moraes Ferreira ◽  
Ana Laura Campista Domingues ◽  
Iracema Takase ◽  
Danielle Marques de Araujo Stapelfeldt
Keyword(s):  
Heavy Metals ◽  
Aquatic Macrophytes ◽  
Selective Adsorption ◽  
Pistia Stratiotes ◽  
Adsorptive Capacity ◽  
Ph Variation ◽  
Bet Method ◽  
Porosity Analysis ◽  
Adsorption Desorption ◽  
Copper Lead

The aquatic macrophytes Salvinia sp. and Pistia stratiotes have a natural capacity to adsorb various elements, including heavy metals. This capacity was enhanced with a chemical treatment using NaOH alkaline solution for Salvinia sp. and a mixture of both Salvinia sp. and Pistia stratiotes at a proportion of 1:1, whose respective biosorbents were called SSOH and MBOH. Adsorption tests were done in a ternary system containing the metals copper, lead and manganese; the parameters considered were: starting concentration, kinetics, pH and temperature. The adsorption isotherms for SSOH had a maximum adsorptive capacity of 50.20, 53.85 and 14.68 mg g−1 for Cu, Pb and Mn, respectively; for MBOH, maximum values were 44.62, 35.17 and 15.74 mg g−1 for Cu, Pb and Mn, respectively. The metals displayed different behaviors with pH variation. The results also showed an adsorption preference of Cu > Pb > Mn for SSOH. Desorption and readsorption studies were also carried out, showing 100% desorption and increased adsorption capacity in readsorption tests. Surface area and porosity analysis with the Brunauer–Emmett–Teller (BET) method indicate that after chemical modification, MBOH and SSOH biomasses had their surface increased in comparison to SS, with values of 165.5657 (MBOH), 157.4392 (SSOH) and 78.9432 m2 g−1 (SS).

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