A surfactant-modulated fluorescent sensor with pattern recognition capability: sensing and discriminating multiple heavy metal ions in aqueous solution

2014 ◽  
Vol 2 (43) ◽  
pp. 18488-18496 ◽  
Author(s):  
Yuan Cao ◽  
Liping Ding ◽  
Wenting Hu ◽  
Junxia Peng ◽  
Yu Fang
Keyword(s):  
Aqueous Solution ◽  
Heavy Metal ◽  
Pattern Recognition ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Fluorescent Sensor ◽  
Surfactant Aggregates ◽  
The Cross ◽  
Recognition Capability

Surfactant aggregates modulating the cross-reactive responses of bispyrene fluorophore containing hydrophilic spacer for the pattern recognition of multiple heavy metal ions.

Comparative Bio-sorption of Cadmium and Nickel Ions from Aqueous Solution onto Fibers of Date Palm using Fluidized Bed Column

2019 ◽  
Vol 70 (5) ◽  
pp. 1507-1512
Author(s):  
Baker M. Abod ◽  
Ramy Mohamed Jebir Al-Alawy ◽  
Firas Hashim Kamar ◽  
Gheorghe Nechifor
Keyword(s):  
Aqueous Solution ◽  
Heavy Metal ◽  
Metal Ions ◽  
Fluidized Bed ◽  
Removal Efficiency ◽  
Heavy Metal Ions ◽  
Date Palm ◽  
Operating Conditions ◽  
Initial Concentration ◽  
Bed Height

The aim of this study is to use the dry fibers of date palm as low-cost biosorbent for the removal of Cd(II), and Ni(II) ions from aqueous solution by fluidized bed column. The effects of many operating conditions such as superficial velocity, static bed height, and initial concentration on the removal efficiency of metal ions were investigated. FTIR analyses clarified that hydroxyl, amine and carboxyl groups could be very effective for bio-sorption of these heavy metal ions. SEM images showed that dry fibers of date palm have a high porosity and that metal ions can be trapped and sorbed into pores. The results show that a bed height of 6 cm, velocity of 1.1Umf and initial concentration for each heavy metal ions of 50 mg/L are most feasible and give high removal efficiency. The fluidized bed reactor was modeled using ideal plug flow and this model was solved numerically by utilizing the MATLAB software for fitting the measured breakthrough results. The breakthrough curves for metal ions gave the order of bio-sorption capacity as follow: Cd(II)]Ni(II).

Removal of heavy metal ions from aqueous solution using Populus nigra sawdust-based activated carbon

2021 ◽  
Vol 221 ◽  
pp. 239-251
Author(s):  
Syed Muhammad Salman ◽  
Fouzia Kamal ◽  
Muhammad Zahoor ◽  
Muhammad Wahab ◽  
Durr e Shahwar ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Heavy Metal ◽  
Activated Carbon ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Populus Nigra

Preparation of thiol-functionalized magnetic sawdust composites as an adsorbent to remove heavy metal ions

RSC Advances ◽  
2016 ◽  
Vol 6 (44) ◽  
pp. 37600-37609 ◽  
Author(s):  
Wentao Gan ◽  
Likun Gao ◽  
Xianxu Zhan ◽  
Jian Li
Keyword(s):  
Aqueous Solution ◽  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
External Magnet

TF-MS could be used to remove heavy metal ions from an aqueous solution and be separated conveniently from the solution with the help of an external magnet.

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