Biosorptive removal of lead and cadmium ions from aqueous solution: The use of carrot residues as low cost non-conventional adsorbent

2012 ◽  
Vol 37 (2) ◽  
pp. 272-279 ◽  
Author(s):  
Sadia Ata ◽  
Feroza Hamid Wattoo ◽  
Lala Rukh Sidra ◽  
Muhammad Hamid Sarwar Wattoo ◽  
Syed Ahmed Tirmizi ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Low Cost ◽  
Cadmium Ions ◽  
Lead And Cadmium

scholarly journals Removal of Lead and Cadmium Ions from Aqueous Solution by Adsorption on a Low-Cost Phragmites Biomass

Processes ◽  
2019 ◽  
Vol 7 (7) ◽  
pp. 406 ◽  
Author(s):  
Abdulaziz N. Amro ◽  
Mohammad K. Abhary ◽  
Muhammad Mansoor Shaikh ◽  
Samah Ali
Keyword(s):  
Aqueous Solution ◽  
Metal Ions ◽  
Surface Area ◽  
Metal Ion ◽  
Low Cost ◽  
Waste Water Treatment ◽  
Study Data ◽  
Small Surface ◽  
Cadmium Ions ◽  
Lead And Cadmium

In recent years, the interest in waste water treatment increased to preserve the environment. The objective of this study is the removal of lead and cadmium ions from aqueous solution by treated Phragmites biomass (TPB). TPB was characterized by using Fourier transform infrared spectroscopy (FTIR) and energy dispersive X-ray analysis (EDS) which indicates the presence of functional groups that may be responsible of metal adsorption such as hydroxyl, carbonyl, sulfonate and carboxylate. Characterization by scanning electron microscopy (SEM) and surface area analysis using the Brunauer–Emmett–Teller method (BET) illustrated that TPB is nonporous with a small surface area. The influences of various experimental factors were investigated; the proposed method recommended the extraction of Pb+2 and Cd+2 metal ions by TPB at pH 5.0. A contact time of 60 and 45 min was required for the adsorption 50 mL (50 ppm) Pb+2 and Cd+2 respectively to reach equilibrium when 0.10 g TPB was used. The optimum TPB dosage was 0.20 g for adsorption both metal ions when adsorbate solution was 50 mL (50 ppm). Particle sizes of 0.125–0.212 mm showed the best metal ion removal of both metal ions. Thermodynamic study illustrated that both metal ions correlate more with Langmuir isotherm. Furthermore, chemisorption of Pb+2 and Cd+2 on TPB was more likely according to kinetic study data.

Removal of lead and cadmium ions from aqueous solution by adsorption onto micro-particles of dry plants

2008 ◽  
Vol 61 (1) ◽  
pp. 10-16 ◽  
Author(s):  
H. Benhima ◽  
M. Chiban ◽  
F. Sinan ◽  
P. Seta ◽  
M. Persin
Keyword(s):  
Aqueous Solution ◽  
Cadmium Ions ◽  
Lead And Cadmium ◽  
Micro Particles
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