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

• Authors: R. Pietrzak
• Languages of publication: 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.

Keywords

EN

61.66.Fn; 81.05.-t; 81.05.Rm; 82.65.+r; 89.60.-k

Discipline

• 61.66.Fn: Inorganic compounds
• 81.05.-t: Specific materials: fabrication, treatment, testing, and analysis(for superconducting materials, see 74.70.-b, and 74.72.-h; for magnetic materials, see 75.50.-y; for optical materials, see 42.70.-a; for dielectric materials, see 77.84.-s; for disperse systems and complex fluids, see 82.70.-y; see also 82.75.-z Molecular sieves, zeolites, clathrates, and other complex solids; for materials properties, see sections 60 and 70)
• 81.05.Rm: Porous materials; granular materials(for granular superconductors, see 74.81.Bd)
• 89.60.-k: Environmental studies(for ecology, see 87.23.-n; for environmental impacts of renewable energy, see 88.05.Np)
• 82.65.+r: Surface and interface chemistry; heterogeneous catalysis at surfaces(for temporal and spatial patterns in surface reactions, see 82.40.Np; see also 82.45.Jn Surface structure, reactivity and catalysis in electrochemistry; see also 68.43.-h Chemisorption/physisorption: adsorbates on surfaces)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2010
• Volume: 118
• Issue: 3
• Pages: 487-492

Dates

published

2010-09

Contributors

author

R. Pietrzak

• Laboratory of Coal Chemistry and Technology, Faculty of Chemistry, Adam Mickiewicz University, Grunwaldzka 6, 60-780 Poznań, Poland

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Identifiers

DOI

10.12693/APhysPolA.118.487