|
International Journal of Environment Science and Technology
Center for Environment and Energy Research and Studies (CEERS)
ISSN: 1735-1472 EISSN: 1735-1472
Vol. 12, No. 1, 2015, pp. 391-404
|
Bioline Code: st15034
Full paper language: English
Document type: Review Article
Document available free of charge
|
|
International Journal of Environment Science and Technology, Vol. 12, No. 1, 2015, pp. 391-404
en |
Heavy metals removal in aqueous environments using bark as a biosorbent
Şen, A.; Pereira, H.; Olivella, M.A. & Villaescusa, L.
Abstract
Tree bark is among the widely available and
low-cost sorbents for metal adsorption in aqueous environments.
A state-of-the-art review is compiled carrying
out a comprehensive literature search on the biosorption of
heavy metals in solution onto different bark species,
including a characterization of bark structure and chemistry.
The results indicate that biosorption has been gaining
importance for bark valorization purposes. Promising
heavy metal uptake values have already been attained using
different bark species. These values are comparable to
those obtained with commercial activated carbons. Bark
has a cost advantage over activated carbon and can be used
without any pretreatment. Thus, bark offers a green alternative
to remove heavy metals from industrial waters. A
brief survey of the chemical composition and structure of
different bark species is presented. Suggestions are made to
improve screening of bark species for specific heavy metal
ions sorption.
Keywords
Bark; Adsorption; Heavy metal; Water effluents; Low-cost sorbents
|
|
© Copyright 2015 - International Journal of Environment Science and Technology Alternative site location: http://www.ijest.org
|
|