Methylglycinediacetic Acid as a New Complexing Agent for Removal of Heavy Metal Ions from Industrial Wastewater

2012 ◽  
Vol 30 (2) ◽  
pp. 181-196 ◽  
Author(s):  
Justyna Jachuła ◽  
Dorota Kołodyńska ◽  
Zbigniew Hubicki
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Industrial Wastewater ◽  
Heavy Metal Ions ◽  
Complexing Agent

Removal of heavy metal ions in the presence of the biodegradable complexing agent of EDDS from waters

2013 ◽  
Vol 221 ◽  
pp. 512-521 ◽  
Author(s):  
Maciej Kowalczyk ◽  
Zbigniew Hubicki ◽  
Dorota Kołodyńska
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Complexing Agent

The adsorption of divalent heavy metal ions on (8,0) carbon nanotubes: The first-principles study

2020 ◽  
Vol 34 (32) ◽  
pp. 2050368
Author(s):  
Z. Zhu ◽  
L. An ◽  
T. Chen ◽  
X. Jia
Keyword(s):  
Carbon Nanotubes ◽  
Heavy Metal ◽  
Metal Ions ◽  
First Principles ◽  
Industrial Wastewater ◽  
Heavy Metal Ions ◽  
Density Functional ◽  
Physical Adsorption ◽  
Functional Theory ◽  
Sensing Material

In order to explore new ways to detect and remove heavy metal ions from industrial wastewater, the first-principles method based on density functional theory has been used to investigate the performance of carbon nanotubes (CNTs) in adsorbing divalent heavy metal ions which include Zn[Formula: see text], Cu[Formula: see text], Pb[Formula: see text] and Sn[Formula: see text]. Results show that the adsorption of Zn[Formula: see text] on CNTs is weak and only physical adsorption forms between them. However, for Cu[Formula: see text], Pb[Formula: see text] and Sn[Formula: see text], the final adsorption distance with CNTs is greatly decreased, and the adsorption energy and charge transfer amount with CNTs are significantly increased. In addition, the charge density of Cu[Formula: see text], Pb[Formula: see text] and Sn[Formula: see text] overlaps effectively with that of CNTs. These indicate the formation of strong chemisorption between these ions and CNTs. Therefore, CNTs could be used as a sensing material to detect and remove Cu[Formula: see text], Pb[Formula: see text] and Sn[Formula: see text] from wastewater. The research provides theoretical guidance for the application of CNTs in heavy metal ions treatment.

Heavy metal ions adsorption from dairy industrial wastewater using activated carbon from milk bush kernel shell

2015 ◽  
Vol 57 (31) ◽  
pp. 14565-14577 ◽  
Author(s):  
Tinuade J. Afolabi ◽  
Abass O. Alade ◽  
Monsurat O. Jimoh ◽  
Isaiah O. Fashola
Keyword(s):  
Heavy Metal ◽  
Activated Carbon ◽  
Metal Ions ◽  
Industrial Wastewater ◽  
Heavy Metal Ions

scholarly journals Banana Rachis CNC/Clay Composite Filter for Dye and Heavy Metals Adsorption from Industrial Wastewater

2021 ◽  
pp. 44-56
Author(s):  
Md. Monjurul Islam ◽  
Md. Shafiqul Islam ◽  
Mohd. Maniruzzaman ◽  
Md. Minhaz-Ul Haque ◽  
Anika Amir Mohana
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Cellulose Nanocrystals ◽  
Industrial Wastewater ◽  
Heavy Metal Ions ◽  
Dye Adsorption ◽  
Before And After ◽  
Composite Filter ◽  
Hydrolysis Of ◽  
Adsorption Capability

This study demonstrates a successful processing and utilization of banana rachis cellulose nanocrystals (CNCs) dispersed clay composite filter which is capable of adsorbing dye and heavy metal ions namely Pb(II) and Cr(III) from industrial wastewater. The composite of different compositions was prepared by dispersing the cellulose nanocrystals, obtained by acid hydrolysis of banana rachis fibres, within the tri-ethyl amine treated clay. The CNC and treated clay were characterized by Fourier transform infrared (FTIR), X-ray diffractometry (XRD), and scanning electron microscopy (SEM) analyses. Industrial wastewater containing a basic yellow2 dye and two heavy metal ions, Pb(II) and Cr(III), was passed through the prepared filters set in a column. The dye and metal ions adsorption capability of the filters were analyzed by determining the dye and metal ions concentration into the water before and after passing through the composite filter. The concentration of dye and metal ions in water was determined by a UV-visible spectrophotometer and an atomic absorption spectrophotometer, respectively. It was found that the dye adsorption capacity of the composite filters was about 50 mg per gram of composite as well as Pb(II) and Cr(III) ions adsorption capacities of the composite filters were ˃10.0 mg and ˃12.4 mg respectively per gram of the composite when CNC content in the composite was ˃30 wt.%. It was also found that the metal ions adsorption capability of the composite filter was improved with increasing CNC content in the composites.

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