scholarly journals Graphene-Based 3D Xerogel as Adsorbent for Removal of Heavy Metal Ions from Industrial Wastewater

2017 ◽  
Vol 5 (2) ◽  
pp. 96-102 ◽  
Author(s):  
. Purnendu ◽  
Soumitra Satapathi
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Industrial Wastewater ◽  
Heavy Metal Ions

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.

Immoblization of Thiol-Functionalized Nanosilica on the Surface of Poly(ether sulfone) Membranes for the Removal of Heavy-Metal Ions from Industrial Wastewater Samples

2014 ◽  
Vol 54 (1) ◽  
pp. 502-513 ◽  
Author(s):  
Ahmad Rezvani-Boroujeni ◽  
Mehran Javanbakht ◽  
Mohammad Karimi ◽  
Cyrous Shahrjerdi ◽  
Behrouz Akbari-adergani
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Industrial Wastewater ◽  
Heavy Metal Ions ◽  
Wastewater Samples

Coal ash as adsorbent for heavy metal ions in standard solutions, industrial wastewater and streams

2011 ◽  
Vol 11 (1-2) ◽  
pp. 129-132 ◽  
Author(s):  
Majlinda N. Daci ◽  
Nexhat M. Daci ◽  
Lulzim Zeneli ◽  
Salih Gashi ◽  
Dafina Hoxha
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Industrial Wastewater ◽  
Heavy Metal Ions ◽  
Coal Ash ◽  
Standard Solutions

scholarly journals Removal of Heavy Metal Ions from Industrial Wastewater by Scolecite

2015 ◽  
Vol 05 (05) ◽  
Author(s):  
Almalih MA Salih A ◽  
Dafaallah AA Magid SAA ◽  
Gizouli AME Tilal AS
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Industrial Wastewater ◽  
Heavy Metal Ions

Removal of Nickel (II) Ion from Wastewater by Modified Maifanite

2015 ◽  
Vol 814 ◽  
pp. 371-375 ◽  
Author(s):  
Wen Xin Zhou ◽  
Deng Gao Guan ◽  
Yao Sun ◽  
Chuan Min Sun ◽  
Guan Li Xu ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Acid Concentration ◽  
Industrial Wastewater ◽  
Heavy Metal Ions ◽  
Surface Effect ◽  
Nickel Ion ◽  
Nickel Ions ◽  
Chemical Plating ◽  
High Efficient

The nickel ions in industrial wastewater derive from electroplating and chemical plating industry. Heavy metal ions can result in water pollution, and do harm to people’s health. Maifanite is a kind of nontoxic and harmless silicate rock mineral materials which have a certain biological activity. Maifanite porthole effect and surface effect can apply to removal of heavy metal ions from wastewater, for example, nickel ion, etc. However, natural Maifanite porous structure could be jammed by humus and sediment gradually; in order to play better adsorption performance of Ni (II) and other heavy metal ions in water, we need to adopt necessary modification treatment processes. H2SO4 was used to modify Maifanite, which prepared a high efficient adsorbent. At the same time, the removal effect of Ni (II) in water at different acid concentration, dosage, temperature, time and etc. was studied. The results showed that the Maifanite obtain better adsorption of 90% when the acid concentration was 2.5 mol/L, dosage of 50 mL, contact time and temperature of Ni (II) were 0.5 h and 30°C respectively. The above treatment has certain effect and meaning to reduce harm extent of industrial wastewater on environment and human health.

scholarly journals Lettuce Leaves as Biosorbent Material to Remove Heavy Metal Ions from Industerial Wastewater

2014 ◽  
Vol 11 (3) ◽  
pp. 1164-1170
Author(s):  
Baghdad Science Journal
Keyword(s):  
Heavy Metal ◽  
Environmental Factors ◽  
Metal Ions ◽  
Contact Time ◽  
Industrial Wastewater ◽  
Heavy Metal Ions ◽  
Current Data ◽  
Zinc Ions ◽  
Biosorption Capacity ◽  
Copper And Zinc

The current study was designed to remove Lead, Copper and Zinc from industrial wastewater using Lettuce leaves (Lactuca sativa) within three forms (fresh, dried and powdered) under some environmental factors such as pH, temperature and contact time. Current data show that Lettuce leaves are capable of removing Lead, Copper and Zinc ions at significant capacity. Furthermore, the powder of Lettuce leaves had highest capability in removing all metal ions. The highest capacity was for Lead then Copper and finally Zinc. However, some examined factors were found to have significant impacts upon bioremoval capacity of studied ions, where best biosorption capacity was found at pH 4, at temperature 50º C and contact time of 1 hour.

Sign in / Sign up

Export Citation Format

Share Document