期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 165, 期 1-3, 页码 240-249出版社
ELSEVIER
DOI: 10.1016/j.jhazmat.2008.09.126
关键词
Posidonia fibres; Char; Physical activation; Adsorption; Modelling
资金
- International Foundation for Science, Stockholm, Sweden
- Organisation for the Prohibition of Chemical Weapons, The Hague, The Netherlands
- AUF (Agence Universitaire de la Francophonie)
Industrial valorisation of low cost and renewable biomass as raw precursor of activated carbon for environmental applications is an interesting alternative to costly commercial activated carbons. In this study, the possible use of Mediterranean, Posidonia oceanica fibrous biomass, as a precursor for chars and physically activated carbons, is investigated. Firstly, the raw marine material was chemically and biochemically chatacterised throughout dry-basis elemental, X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM) analysis. Then, several P. oceanica chars were prepared and characterised under different pyrolysis times and temperatures. In addition, physically activated carbons (PACs) were produced via water steam flow under various activation periods. The results showed that the pyrolysis induces the creation of pores at different levels with respect to the involved temperature. Thereafter, the physical activation tends to enhance the development of the porous structure. In that issue, the performed Brunauer-Emmett-Teller (BET) and Barrett-Joiner-Halenda (BJH) analysis revealed that the prepared PACs have a mainly mesoporous inner morphology with a varying fraction of micropores. (C) 2008 Elsevier B.V. All rights reserved.
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