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Title

Biomass waste-derived activated carbon for the removal of arsenic and manganese ions from aqueous solutions

AuthorsBudinova, Temenuzhka; Savova, D.; Tsyntsarski, Boyko; Ovín Ania, María Concepción CSIC ORCID ; Cabal Álvarez, Belén; Parra Soto, José Bernardo CSIC ORCID ; Petrov, Nartzislav
KeywordsActivated carbon
Bean pods
Adsorption
Arsenic
Manganese
Issue Date11-Feb-2009
PublisherElsevier
CitationApplied Surface Science 255 (8): 4650–4657 (2009)
AbstractThe goal of this study is to investigate the preparation of low-cost activated carbon from bean pods waste and to explore their potential application for the removal of heavy metals from aqueous solutions. Conventional physical (water vapor) activation was used for synthesizing the adsorbent. The obtained carbon was employed for the removal of As (III) and Mn (II) from aqueous solutions at different initial concentrations and pH values. Adsorption for both ions follows Langmuir-type isotherm, the maximum loading capacities for arsenic (III) and Mn (II) ions being 1.01 and 23.4 mg g−1, respectively. According to the experimental data, it can be inferred that the basic character of the surface, i.e. the high content of basic groups, favors adsorption of ions. Arsenic adsorption capacity on the carbon obtained from agricultural waste was found to be similar to this of more expensive commercial carbons showing high adsorption capability. Regarding manganese adsorption, herein obtained carbon presented higher uptake adsorption than that of activated carbons reported in the literature.
Description8 pages, 7 figures, 3 tables. -- Available online 11 December 2008.
Publisher version (URL)http://dx.doi.org/10.1016/j.apsusc.2008.12.013
URIhttp://hdl.handle.net/10261/11664
DOI10.1016/j.apsusc.2008.12.013
ISSN0169-4332
Appears in Collections:(INCAR) Artículos

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