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2010 | 118 | 3 | 487-492
Article title

Carbonaceous Materials Obtained from Sewage Sludge for NO_2 Removal under Wet Conditions at Room Temperature

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EN
Abstracts
EN
The effect of the processes of carbonisation and activation on adsorbents obtained from sewage sludge and their sorption properties towards NO_2 were studied. Carbonaceous adsorbents were obtained by carbonisation of sewage sludge at 600°C for four different times 30, 60, 90 and 120 min followed by activation of the carbonisates by CO_2 at 800°C for 60 min. Adsorption of NO_2 was carried out in wet air. It has been shown that by appropriate thermal and chemical treatment of sludge, mesoporous adsorbents capable of NO_2 removal can be obtained. The sorption abilities of the carbonised and activated samples to adsorb NO_2 have been shown to increase with increased time of carbonisation and reach maximum for the carbonisation maintained for 90 min. Further increase in this time causes a decrease in the adsorption abilities of the samples. The sorption properties of the carbonisates have been proved to be determined by the chemical character of the surface, while those of the activated samples - by the porous structure.
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author
  • Laboratory of Coal Chemistry and Technology, Faculty of Chemistry, Adam Mickiewicz University, Grunwaldzka 6, 60-780 Poznań, Poland
References
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Document Type
Publication order reference
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YADDA identifier
bwmeta1.element.bwnjournal-article-appv118n312kz
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