Simultaneous heavy metal removal mechanism by dead macrophytes

Miretzky, Patricia; Saralegui, Andrea Beatriz; Cirelli, Alicia Fernández

doi:10.1016/j.chemosphere.2005.05.010

Cited by 214 publications

(101 citation statements)

References 25 publications

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“…It was confirmed that, among others, this macrophyte sorbs hydrogen cations at low pH values of the solution and then desorbs with the increasing pH of the solution, which it was in contact with [18]. Similar conclusions were made on the basis of the research results, which show that heavy metals cations sorption is simultaneous with desorption of cations naturally bound in macrophytes: H + , Na + , K + , Ca 2+ and Mg 2+ [19,20]. Veglio and Beolchini declared that there are many ways of metals absorption by plant cells.…”

Section: Biosorption and Bioaccumulation Of Heavy Metals By Macrophytessupporting

confidence: 76%

“…was carried out [37] and sorption characteristics of Lemna minor, in which from the solution with initial concentration of 10 mg/dm 3 the sorbed volumes were 98.83% Pb, 94.07% Cd, 72.78% Cu, 69.03% Ni and 63.42% Zn. It was confirmed that the efficiency of sorption of most metals was greater in the solutions with the initial concentrations of 10 mg/dm 3 in comparison with the solutions with twice as large concentrations, which probably results from filling the active centres by the sorbed metals [19].…”

Section: Biosorption and Bioaccumulation Of Heavy Metals By Macrophytessupporting

confidence: 62%

“…Mainly the model of the pseudo-second order reaction [23,[25][26][27][28][29][30] and, less frequently, the model of the pseudo-first order (the Lagergren model) [19] is used to describe sorption kinetics. The studies of kinetics aim at establishing the reaction speed constant.…”

Section: Biosorption and Bioaccumulation Of Heavy Metals By Macrophytesmentioning

confidence: 99%

See 2 more Smart Citations

The Use of Water Plants in Biomonitoring And Phytoremediation of Waters Polluted with Heavy Metals

Krems¹,

Rajfur²,

Wacławek³

et al. 2013

Ecological Chemistry and Engineering S

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Abstract:The publication is a synthetic review of many years of research on the possibility of using water plants (macrophytes) to assess pollution of surface waters and the possibility of using the biomass in phytoremediation processes. The results of the research of kinetics and equilibria of heavy metals sorption and desorption conditions were presented in order to repeatedly use the biomass, as well as the research on the influence of abiotic factors on sorption processes. Defence mechanisms of macrophytes, which enable them to vegetate in considerably polluted waters, have been discussed. The results presented herein and carried out in many countries demonstrate that macrophytes can be successfully used in the biomonitoring of water environments and phytoremediation of waters and sewage; however, validation of these procedures requires more detailed research of the mechanisms, which accompany them.

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Section: Biosorption and Bioaccumulation Of Heavy Metals By Macrophytessupporting

confidence: 76%

Section: Biosorption and Bioaccumulation Of Heavy Metals By Macrophytessupporting

confidence: 62%

See 1 more Smart Citation

The Use of Water Plants in Biomonitoring And Phytoremediation of Waters Polluted with Heavy Metals

Krems¹,

Rajfur²,

Wacławek³

et al. 2013

Ecological Chemistry and Engineering S

View full text Add to dashboard Cite

show abstract

“…Traditional technologies such as chemical precipitation, ion exchange, activated carbon adsorption, and membrane separation processes have been applied widely for the removal of heavy metals from contaminated environmental waters [2]. As any method, most of these methods have several advantages and, at the same, drawbacks which have caused a great interest in the use of other sorbent materials [3]. Biological approaches, especially the use of biosorbents, have been evaluated as an alternative to these techniques [4].…”

Section: Introductionmentioning

confidence: 99%

Equilibrium, thermodynamic and kinetic studies for the biosorption of aqueous lead(II), cadmium(II) and nickel(II) ions on Spirulina platensis

Şeker¹,

Shahwan²,

Eroğlu³

et al. 2008

Journal of Hazardous Materials

117

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The biosorption of lead(II), cadmium(II) and nickel(II) ions from aqueous solution by Spirulina platensis was studied as a function of time, concentration, temperature, repetitive reactivity, and ionic competition. The kinetic results obeyed well the pseudo second-order model. Freundlich, Dubinin Radushkevich and Temkin isotherm models were applied in describing the equilibrium partition of the ions. Freundlich isotherm was applied to describe the design of a single-stage batch sorption system. According to the thermodynamic parameters such as G• , H • and S• calculated, the sorption process was endothermic and largely driven towards the products. Sorption activities in a three metal ion system were studied which indicated that there is a relative selectivity of the biosorbent towards Pb 2+ ions. The measurements of the repetitive reusability of S. platensis indicated a large capacity towards the three metal ions.

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“…R ECENTLY, numerous approaches have been studied for developing more effective technologies, not only to reduce the amount of heavy metal wastewater but also to improve the quality of the treated effluent [1,2]. Among these approaches, adsorption is the most versatile and the most widely used method by far, in which activated carbon is the most commonly used adsorbent.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Heavy Metals by Adsorbents from Food Waste Residue

FAN¹,

ZHANG²

2015

JRST

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Food waste residue is an intractable problem worldwide. The current study discussed the potential of adsorbents prepared from food waste residue (AFWR) for heavy metal removal from wastewater. The microstructure of AFWR was characterized, and kinetic studies on the simultaneous adsorption of Pb 2+ , Cu 2+ , Zn 2+ and Cd 2+ ions from aqueous solutions by AFWR were carried out. It was found that the adsorption of all heavy metals followed a pseudo-second-order kinetics, so that there was a competitive adsorption for Pb 2+ , Cu 2+ , Zn 2+ and Cd 2+ . According to the experimental results, the adsorption in competition beads with the heavy metals presented an order of Cu 2+ > Pb 2+ > Zn 2+ > Cd 2+ .

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Simultaneous heavy metal removal mechanism by dead macrophytes

Cited by 214 publications

References 25 publications

The Use of Water Plants in Biomonitoring And Phytoremediation of Waters Polluted with Heavy Metals

The Use of Water Plants in Biomonitoring And Phytoremediation of Waters Polluted with Heavy Metals

Equilibrium, thermodynamic and kinetic studies for the biosorption of aqueous lead(II), cadmium(II) and nickel(II) ions on Spirulina platensis

Adsorption of Heavy Metals by Adsorbents from Food Waste Residue

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