Inorganic Particulates in Removal of Toxic Heavy Metal Ions:* Efficient Removal of Cadmium Ions from Aqueous Solutions by Hydrous Manganese Oxide

1998 ◽  
Vol 80 (4) ◽  
Author(s):  
Shuddhodan P. Mishra ◽  
Dhanesh Tiwary
Keyword(s):  
Heavy Metal ◽  
Aqueous Solutions ◽  
Metal Ions ◽  
Manganese Oxide ◽  
Heavy Metal Ions ◽  
Efficient Removal ◽  
Toxic Heavy Metal ◽  
Cadmium Ions ◽  
Hydrous Manganese Oxide

scholarly journals Porous BMTTPA–CS–GO nanocomposite for the efficient removal of heavy metal ions from aqueous solutions

RSC Advances ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 3725-3731
Author(s):  
Juan Huang ◽  
Weirong Cui ◽  
Ruping Liang ◽  
Li Zhang ◽  
Jianding Qiu
Keyword(s):  
Heavy Metal ◽  
Aqueous Solutions ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Polluted Water ◽  
Efficient Removal

Novel porous BMTTPA–CS–GO nanocomposites are prepared by covalently grafting BMTTPA–CS onto GO surfaces, and used for efficient removal of heavy metal ions from polluted water.

scholarly journals Sorption of lead and cadmium ions from aqueous solutions using modified zeolite

2018 ◽  
pp. 16-22
Author(s):  
Madina Telkhozhayeva ◽  
Gulziya Seilkhanova ◽  
A. Rakhym ◽  
Ainur Imangaliyeva ◽  
Dina Akbayeva
Keyword(s):  
Heavy Metal ◽  
Aqueous Solutions ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Exchange Capacity ◽  
Static Exchange Capacity ◽  
Cadmium Ions ◽  
Modified Zeolite ◽  
Lead And Cadmium ◽  
Static Conditions

The processes of lead and cadmium ions sorption by modified zeolite of Chankanai deposit were studied. Chitosan was used as a surface modifier due to its properties: nontoxicity, biodegradability and biocompatibility. The adsorption process was carried out at room temperature (295 K) and pH 7 under static conditions. The synthesized sorbent has been characterized by scanning electron microscopy (SEM), elemental analysis; the concentrations of Pb(II) and Cd(II) ions before and after adsorption were determined using atomic absorption spectroscopy (AAS). The Si/Al ratio of the zeolite was found to be 1.66, which showed the prospects of using this material as a source object. The static exchange capacity (SEC) of sorbents and the extraction degree of heavy metal ions were determined and compared. It was found that the removal of heavy metal ions increased with the increase of contact time (removal efficiency was 99.1±1.2% for Pb2+ and 83.4±1.2% for Cd2+). The adsorption capacity values of the modified zeolite for metal ions were (0.86±0.03) mg/g for Cd(II) and (0.68±0.03) mg/g for Pb(II). Chitosan-modified zeolite proved to be an effective adsorbent for removal of lead and cadmium ions from aqueous solutions.

Magnetic organic xerogels: efficient adsorbents for the removal of heavy metal ions from aqueous solutions

2018 ◽  
Vol 42 (9) ◽  
pp. 7073-7082 ◽  
Author(s):  
Przemysław Strachowski ◽  
Maciej Fronczak ◽  
Eliza Olechno ◽  
Marlena Kowalik ◽  
Wojciech Kiciński ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Aqueous Solutions ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Efficient Removal ◽  
Composite Adsorbents

The synthesis of novel mobile composite adsorbents dedicated to the efficient removal of heavy metal ions from aqueous solutions is presented.

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