Removal of Heavy Metals by Waste Tea Leaves from Aqueous Solution

2005 ◽  
Vol 5 (2) ◽  
pp. 158-162 ◽  
Author(s):  
S. S. Ahluwalia ◽  
D. Goyal
Keyword(s):  
Heavy Metals ◽  
Aqueous Solution ◽  
Tea Leaves ◽  
Removal Of Heavy Metals ◽  
Waste Tea

Removal of heavy metals from aqueous solution using carbon-based adsorbents: A review

2020 ◽  
Vol 37 ◽  
pp. 101339 ◽  
Author(s):  
Chengyu Duan ◽  
Tianyu Ma ◽  
Jianyu Wang ◽  
Yanbo Zhou
Keyword(s):  
Heavy Metals ◽  
Aqueous Solution ◽  
Removal Of Heavy Metals ◽  
Carbon Based

Removal of Heavy Metals from Aqueous Solution by Hydroxyapatite/Chitosan Composite

2013 ◽  
Vol 789 ◽  
pp. 176-179 ◽  
Author(s):  
Eny Kusrini ◽  
Nofrijon Sofyan ◽  
Dwi Marta Nurjaya ◽  
Santoso Santoso ◽  
Dewi Tristantini
Keyword(s):  
Heavy Metals ◽  
Aqueous Solution ◽  
Metal Ions ◽  
Precipitation Method ◽  
X Ray Diffraction ◽  
X Ray ◽  
Removal Of Heavy Metals ◽  
Sem Micrograph ◽  
Pseudo Second Order ◽  
Chitosan Composite

Hydroxyapatite/chitosan (HApC) composite has been prepared by precipitation method and used for removal of heavy metals (Cr6+, Zn2+and Cd2+) from aqueous solution. The HAp and 3H7C composite with HAp:chitosan ratio of 3:7 (wt%) were characterized by Fourier transform infrared spectroscopy, X-ray diffraction and scanning electron microscopy-energy dispersive X-ray spectroscopy. The SEM results showed that HAp is spherical-shaped and crystalline, while chitosan has a flat structure. SEM micrograph of 3H7C composite reveals crystalline of HAp uniformly spread over the surface of chitosan. The crystal structure of HAp is maintained in 3H7C composite. Chitosan affects the adsorption capacity of HAp for heavy metal ions; it binds the metal ions as well as HAp. The kinetic data was best described by the pseudo-second order. Surface adsorption and intraparticle diffusion take place in the mechanism of adsorption process. The binding of HAp powder with chitosan made the capability of composite to removal of Cr6+, Zn2+and Cd2+from aqueous solution effective. The order of removal efficiency (Cr6+> Cd2+> Zn2+) was observed.

Removal of heavy metals from aqueous solution by apple residues

1998 ◽  
Vol 33 (2) ◽  
pp. 205-211 ◽  
Author(s):  
Sung Ho Lee ◽  
Chong Hun Jung ◽  
Hongsuk Chung ◽  
Moo Yeal Lee ◽  
Ji-Won Yang
Keyword(s):  
Heavy Metals ◽  
Aqueous Solution ◽  
Removal Of Heavy Metals
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