scholarly journals Capacity of Absorption and Removal of Heavy Metals from <i>Scirpus californicus</i> and Its Potential Use in the Remediation of Polluted Aquatic Environment

2019 ◽  
Vol 09 (02) ◽  
pp. 74-85
Author(s):  
Walter Cuadrado ◽  
María Custodio ◽  
Ciro Espinoza ◽  
Carmela Vicuña ◽  
Marilú Uribe
Keyword(s):  
Heavy Metals ◽  
Aquatic Environment ◽  
Removal Of Heavy Metals ◽  
Scirpus Californicus ◽  
Potential Use

scholarly journals Metallothionein Expression in Estuarine Catfish (Arius thalassinus) Kidney on Exposure to Heavy Metals (Cd, Pb, Cu and Zn) Concentration

2021 ◽  
Vol 23 (06) ◽  
pp. 186-195
Author(s):  
Ahmed A ◽  
◽  
Ismail A ◽  
Omar H ◽  
Zulkifli S ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Aquatic Environment ◽  
Kidney Tissue ◽  
Pollution Assessment ◽  
Small Fish ◽  
Zn Concentration ◽  
Highly Sensitive ◽  
Primary Mouse ◽  
Immunohistochemical Techniques ◽  
Potential Use

Immunohistochemical techniques have been used to identify Metallothionein3 (MT3) expression specifically to detect MT3 levels in the kidney. The techniques employed are highly sensitive, thus allowing the detection of the very low amount of proteins with the use of antibodies. The present study aimed at identifying the MT3 expressions and localizations in the kidney tissue of estuarine catfish Arius thalassinus from Kuala Gula using immunohistochemical methods. Primary mouse monoclonal anti-MT3 (1F11), primary antibody (1:2000), secondary antibody, and Goat anti-mouse IgG2 (1:2000) were used. MT3 bands were detected using (Santa Cruz kit USA method). Heavy metals (Cd, Pb, Zn, and Cu) were determined using aqua regia’s methods followed by analyses with AAS. The results showed high expressions of Metallothionein3 (MT3) with an increasing concentration of heavy metals. Large catfish A. thalassinus had a higher accumulation of heavy metals concentrations, therefore, exhibiting higher expressions than smaller-sized fish. The concentration of heavy metals in fishes were: Zn (284.00 ±29.7, 259.32± 23.2 and 240.90±20.3 μg/g-1 d.w), Cu (7.00±1.7, 6.90±1.3 and 5.60±1.8 μg/g-1 d.w), Pb (66.80±10.8, 35.31±6.4 and 26.02±6.9 μg/g-1 d.w) and Cd (1.32 ± 0.12, 1.19 ±0.12 and 1.20± 0.09 μg/g-1 d.w) in large, medium and small fish respectively. The results of this study suggest its suitability as a biomarker candidate for pollution assessment in the aquatic environment. The different MT3 expressions in different sized fish and different polluted places showed the potential use of MT3 as a biomonitoring biomarker for heavy metals exposure in an aquatic environment.

Distribution of heavy metals in water and bottom sediments in reservoirs of the Dnipro cascade (Ukraine).

2020 ◽  
Author(s):  
Volodymyr Osadchyi ◽  
Natalia Osadcha ◽  
Yurii Nabyvanets ◽  
Valeriy Osypov ◽  
Dmytro Kozhemiakin ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Humic Substances ◽  
Bottom Sediments ◽  
Aquatic Environment ◽  
Solution Phase ◽  
Anthropogenic Load ◽  
Water Volume ◽  
Total Water ◽  
Interphase Distribution ◽  
Removal Of Heavy Metals

&lt;p&gt;The Dnipro river is the main catchment in Ukraine. Within its territory the river flow is regulated and &amp;#160;represents a cascade of six reservoirs in direction from upper to down: Kyiv, &amp;#160;Kanevsky, Kremenchug, Kamensky, Dniprovsky, and Kakhovsky. &amp;#160;Reservoirs have a total water mirror area of 6950 km&amp;#178; and a total water volume of 44 km&amp;#179;. These figures make 95% and 91% of the total number of all large reservoirs in Ukraine, respectively. Their location in various natural and climatic zones, the difference in morphometric and hydrodynamic characteristics, hydrobiological, physicochemical, and sedimentation processes, as well as levels of anthropogenic load make them a unique object for studying intra-water processes, including processes of transformation, interphase exchange and accumulation of heavy metals in bottom sediments.&lt;/p&gt;&lt;p&gt;The study presents long-term data on the dynamics of the content and patterns of distribution of heavy metals (Fe, Mn, Cu, Zn, Pb, Ni, Co, Cd) in water, as well as in suspended solids, and bottom sediments of these reservoirs.&lt;/p&gt;&lt;p&gt;The influence of hydrological factors, physicochemical and hydrobiological processes on the nature of the transformation and interphase distribution of the heavy metals in the system &amp;#8220;water &amp;#8211; suspended substances &amp;#8211; bottom sediments&amp;#8221; has been shown. The contribution of mineral particles, Fe hydroxides and Mn oxides, and high molecular weight fractions of humic substances (humic and fulvic acids) on sorption processes and the removal of heavy metals from the solution phase were studied.&lt;/p&gt;&lt;p&gt;It has been found that the shift of the equilibrium of the calcium-carbonate system towards the formation of the CaCO&lt;sub&gt;3&lt;/sub&gt; solid phase, which is associated with intensive hydrobiological processes in the Kremenchug and Kakhovsky reservoirs, leads to the additional removal of heavy metals from the solution due to deposition.&lt;/p&gt;&lt;p&gt;The study reveals the special aspects of the interphase distribution of heavy metals between the liquid and solid phases, due to the physicochemical conditions of the aquatic environment, as well as the morphometric characteristics of the reservoirs, flow rate, water temperature, duration of the ice cover during winter, and the content of organic substances.&lt;/p&gt;&lt;p&gt;The results of the distribution of heavy metals among various types of bottom sediments and their different particle size fractions are presented.&lt;/p&gt;&lt;p&gt;&amp;#160;It has been shown that a specific feature of the first in the cascade Kyiv Reservoir is the high content of dissolved humic substances, which play an important role in the migration of heavy metals.&lt;/p&gt;&lt;p&gt;The co-existing forms of metals in the solution phase are investigated with the thermodynamic modeling approach. This method was also used to evaluate the flow of metals from pore solutions of bottom sediments into the aquatic environment. Differences in the rate of molecular diffusion of metals from bottom sediments have been shown. They are caused by both the water chemistry and pore solutions, and the concentrations of metals and binding ligands.&lt;/p&gt;&lt;p&gt;The levels of anthropogenic load with heavy metals on the reservoir ecosystems have been evaluated over the past 30 years.&lt;/p&gt;

Biosorption: An Eco-Friendly Technique for the Removal of Heavy Metals

2011 ◽  
Vol 2 (3) ◽  
pp. 1-8 ◽  
Author(s):  
Sasmita Sabat ◽  
◽  
R V Kavitha R V Kavitha ◽  
Shantha S L Shantha S L ◽  
Gopika Nair ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Removal Of Heavy Metals

COPPER AND ZINC INDUCED CHANGES IN SOYBEAN (Glycine max (L.) Merr.)

1970 ◽  
pp. 09
Author(s):  
K. SANKAR GANESH ◽  
P. SUNDARAMOORTHY
Keyword(s):  
Heavy Metals ◽  
Glycine Max ◽  
Aquatic Environment ◽  
Morphological Traits ◽  
Industrial Activities ◽  
Copper And Zinc ◽  
Glycine Max L ◽  
Zinc Concentrations ◽  
Induced Changes

Heavy metals are one of the most important pollutants released to the aquatic environment by the various industrial activities. The use of these wastewater for irrigation results accumulation of heavy metals in soil and plants. So, the present investigation deals with the various concentrations (0, 5, 10, 25, 50, 100, 200 and 300 mg/l) of copper and zinc on germination studies of soybean. The different concentrations of copper and zinc were used for germination studies. The seedlings were allowed to grow upto seven days. The studied morphological traits increased at 5 mg/l concentration and these parameters are gradually decreased with the increase of copper and zinc concentrations.

Study of the Cu(II) removal from aqueous solutions by adsorption on titania

2013 ◽  
Vol 12 (3) ◽  
pp. 239-247
Keyword(s):  
Heavy Metals ◽  
Ionic Strength ◽  
Toxic Metals ◽  
Low Cost ◽  
Lateral Interaction ◽  
Tio2 Surface ◽  
High Toxicity ◽  
Removal Of Heavy Metals ◽  
Solution Parameters ◽  
Kinetics Of

The removal of heavy metals from wastewaters is a matter of paramount importance due to the fact that their high toxicity causes major environmental pollution problems. One of the most efficient, applicable and low cost methods for the removal of toxic metals from aqueous solutions is that of their adsorption on an inorganic adsorbent. In order to achieve high efficiency, it is important to understand the influence of the solution parameters on the extent of the adsorption, as well as the kinetics of the adsorption. In the present work, the adsorption of Cu(II) species onto TiO2 surface was studied. It was found that the adsorption is a rapid process and it is not affected by the value of ionic strength. In addition, it was found that by increasing the pH, the adsorbed amount of Cu2+ ions and the value of the adsorption constant increase, whereas the value of the lateral interaction energy decreases.

Synergistic Effect of Rhamnolipid and Saponin Biosurfactants on Removal of Heavy Metals from Oil Contaminated Soils

2020 ◽  
Vol 57 (2) ◽  
pp. 109-114
Author(s):  
Amirhossein Dolatzadeh khiyavi ◽  
Reza Hajimohammadi ◽  
Hossein Amani ◽  
Hadi Soltani
Keyword(s):  
Heavy Metals ◽  
Synergistic Effect ◽  
Contaminated Soils ◽  
Removal Of Heavy Metals
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