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Bharatiya Vaigyanik evam Audyogik Anusandhan Patrika (BVAAP) >
BVAAP Vol.18 [2010] >
BVAAP Vol.18(1) [June 2010] >
| Title: | Adsorption of toxic metallic ions (Hg2+, Pb2+ and Zn2+) by Sweet Orange bark (Citrus sinensis) — A study |
| Authors: | Kumar, Ramesh
Kumari, Kalpna |
| Issue Date: | Jun-2010 |
| Publisher: | CSIR |
| Abstract: | The presence of toxic metal
ions like Hg2+, Pb2+, and Zn2+ etc. in industrial waste has attracted world wide attention. A
variety of methods has been
investigated and developed for removal of toxic metal ions including oxidation,
co-precipitation adsorption,
distillation and ion exchange. The selection of the removal method is
ultimately dependent
upon the technology being
validated in terms of sustainability, efficiency adsorption and cost
effectiveness.
Based on there criteria
adsorption method is considered to be the most suitable. Adsorption of toxic
metal ions like
Hg2+, Pb2+ and transition metal Zn2+ ion on different agricultural
by-product were measured by UV-visible spectrophotometer
– 108. Adsorption of metal
ions follows the order polymerized Citrus sinensis is (mosambi) skin> other
absorbent. Citrus sinensis skin showed maximum adsorbing
capacity for Hg2+ and Pb2+ metal ions. It could also be
seen that Hg2+ metal ion is a good absorbing
adsorbate as compared to Pb2+ and Zn2+ metal ions. The values of
freundlich constants (n and k) are estimated and found to be 1/n <1
and k>1. |
| Page(s): | 27-29 |
| ISSN: | 0975-2412 (Online); 0771-7706 (Print) |
| Source: | BVAAP Vol.18(1) [June 2010]
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