scholarly journals Study of the kinetics of sorption of heavy metal ions by dry biomass of cyanobacteria

2020 ◽  
Author(s):  
S. G. Skugoreva ◽  
G. Ya. Kantor ◽  
L. I. Domracheva
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Copper Ions ◽  
Sorption Rate ◽  
Cadmium Ions ◽  
Dry Biomass ◽  
Kinetics Of ◽  
Kinetics Of Sorption

Sorption of copper (II), lead (II) and cadmium ions from a solution with a concentration of 1 ∙ 10-4 mol/L by dry biomass of cyanobacteria Fischerella muscicola occurred 1.4-1.9 times faster than Nostoc paludosum. The sorption rate of lead and copper ions was 1.9-2.6 times higher compared to cadmium ions.

scholarly journals The participation of cyanobacteria in reducing the concentration of fusariotoxins and heavy metal ions in aqueous solutions (model experiments)

2021 ◽  
Vol 16 (1) ◽  
pp. 53-60
Author(s):  
L. I. Domracheva ◽  
S. G. Skugoreva ◽  
A. I. Fokina ◽  
М. A. Zagoskin ◽  
Т. Ya. Аshikhmina
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Fusaric Acid ◽  
Growth Media ◽  
Cadmium Ions ◽  
Nostoc Linckia ◽  
Dry Biomass ◽  
Kinetics Of ◽  
Kinetics Of Sorption

Aim. The goal was to establish the effect of soil cyanobacteria (CB) Fischerella muscicola, Nostoc paludosum and Nostoc linckia on change in the concentration of heavy metal ions (HM) and fusariotoxins in aqueous media.Material and Methods. In order to plot the kinetics of sorption by dry biomass of CB Fischerella muscicola and Nostoc paludosum of copper(II), lead(II) and cadmium ions from solutions with a concentration of 10‐4mol/L, the method of potentiometry with ion‐selective electrodes was used. The concentration of fusariotoxins in the filtrate of the contact medium of Fischerella muscicola CB and Nostoc linckia with F. culmorumwas determined by HPLC.Results. The kinetics of sorption of TM ions by dry biomass of the CB isbest described by a modified second‐order model. According to the model, the sorption process limits the ion exchange reaction. In the presence of CB Fischerella muscicola and Nostoc linckia with a titer of 1.8∙106 cells/mL (1:100 dilution), a decrease in toxin and lycomarasmin in T‐2 medium occurs. However, this increases the concentration of fusaric acid and deoxynivalenol. In the variant where the titer of CB is equal to 1.8∙107cells/mL, the concentration of lycomarasmin is significantly reduced, while there is no change in the concentration of other fusariotoxins.Conclusion. Dry biomass of CB, having a high bisorption potential, can act as a good biosorbent with respect to copper(II), lead(II) and cadmium ions. A decrease in the concentration of fusariotoxins indicates the possibility of isolating active CB substances that can inhibit the biosynthesis of certain toxins of micromycetes of the genus Fusarium, reducing both the phytotoxicity of plant growth media and increasing the safety of crop production. 

Equation for the Kinetics of Sorption of Heavy-Metal Ions on Synthetic Aluminosilicates

2019 ◽  
Vol 93 (11) ◽  
pp. 2284-2290 ◽  
Author(s):  
P. S. Gordienko ◽  
I. A. Shabalin ◽  
S. B. Yarusova ◽  
I. G. Zhevtun ◽  
O. S. Vasilenko
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Kinetics Of ◽  
Kinetics Of Sorption

The physicochemical characterization, equilibrium, and kinetics of heavy metal ions adsorption from aqueous solution by arrowhead plant (Sagittaria trifoliaL.) stalk

2017 ◽  
Vol 42 (1) ◽  
pp. e12448 ◽  
Author(s):  
Di Zhang ◽  
Chengtao Wang ◽  
Qihang Bao ◽  
Jie Zheng ◽  
Di Deng ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Physicochemical Characterization ◽  
Equilibrium And Kinetics ◽  
Kinetics Of

scholarly journals Research on the Adsorption Behavior of Heavy Metal Ions by Porous Material Prepared with Silicate Tailings

Minerals ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 291 ◽  
Author(s):  
Dongxiao Ouyang ◽  
Yuting Zhuo ◽  
Liang Hu ◽  
Qiang Zeng ◽  
Yuehua Hu ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Porous Material ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Low Cost ◽  
Order Kinetic ◽  
X Ray Diffraction ◽  
New Thought ◽  
Adsorption Models ◽  
Kinetics Of

Tailings generated from mineral processing have attracted worldwide concerns due to creating serious environmental pollution. In this work, porous adsorbents were prepared as a porous block by using silicate tailings, which can adsorb heavy metal ions from the solution and are easy to separate. The synthesized silicate porous material (SPM) was characterized by X-ray diffraction (XRD), Brunner–Emmet–Teller (BET), and scanning electron microscope (SEM). The material presented a surface area of 3.40 m2⸱g−1, a porosity of 54%, and the compressive strength of 0.6 MPa. The maximum adsorption capacities of Pb2+, Cd2+, and Cu2+ by SPM were 44.83 mg·g−1, 35.36 mg·g−1, and 32.26 mg·g−1, respectively. The experimental data were fitted well by the Freundlich and Langmuir adsorption models. The kinetics of the adsorption process were fitted well by the pseudo-first order kinetic equation. These results show that the porous materials prepared with silicate tailings could act as an effective and low-cost adsorbent for the removal of heavy metal ions from wastewater. This study may provide a new thought on the high-value utilization of tailing for alleviating environmental pressure.

Adsorption efficiency, thermodynamics, and kinetics of amino-functionalized mesoporous calcium silicate for the removal of heavy metal ions

2018 ◽  
Vol 107 ◽  
pp. 165-181 ◽  
Author(s):  
Lihua Liu ◽  
Jinyan Liu ◽  
Tong Li ◽  
Ganggang Yang ◽  
Anping Tang ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Calcium Silicate ◽  
Heavy Metal Ions ◽  
Adsorption Efficiency ◽  
Thermodynamics And Kinetics ◽  
Kinetics Of

Thermodynamics and kinetics of adsorption for heavy metal ions from aqueous solutions onto surface amino-bacterial cellulose

2014 ◽  
Vol 24 (6) ◽  
pp. 1912-1917 ◽  
Author(s):  
Min LU ◽  
Yue-ming ZHANG ◽  
Xiao-hui GUAN ◽  
Xiao-hui XU ◽  
Ting-ting GAO
Keyword(s):  
Heavy Metal ◽  
Aqueous Solutions ◽  
Metal Ions ◽  
Bacterial Cellulose ◽  
Heavy Metal Ions ◽  
Kinetics Of Adsorption ◽  
Thermodynamics And Kinetics ◽  
Kinetics Of
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