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Biochar from pyrolysis of biological sludge from wastewater treatment
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| Veröffentlicht in: | Energy reports 6(2020), 1 vom: Feb., Seite 757-763; year:2020; month:02; volume:6; pages:757-763; number:1 |
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| Personen und Körperschaften: | , , , , |
| Titel: | Biochar from pyrolysis of biological sludge from wastewater treatment/ L.A.C. Tarelho, T. Hauschild, A.C.M. Vilas-Boas, D.F.R. Silva, M.A.A. Matos |
| Format: | E-Book-Kapitel |
| Sprache: | Englisch |
| veröffentlicht: |
2020
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| Gesamtaufnahme: |
: Energy reports, 6(2020), 1 vom: Feb., Seite 757-763
, volume:6 |
| Schlagwörter: | |
| Quelle: | Verbunddaten SWB Lizenzfreie Online-Ressourcen |
| Zusammenfassung: | It was studied the production of biochar by pyrolysis of biological sludge from wastewater treatment in the pulp and paper industry. The pyrolysis process was conducted in bench-scale fixed-bed reactor using distinct operating conditions of heating rate (2, 10, 20 and 30 ºC/min) and peak temperature (300, 375, 450, 525, and 600 ºC). The biochar yield is in the range 0.40 to 0.73 kg/kg dry sludge, and decreases with increasing peak temperature and heating rate. The organic matter content of the biochar is in the range 55.9 to 75.3%wt. (dry basis). Both the temperature increase and the heating rate increase promote the decrease of biochar volatile matter content within values between 14.4 and 48.4%wt. (dry basis). The biochar ash content increases with peak temperature and heating rate, and it has values in the range 24.7 to 44.1%wt. (dry basis). The corresponding fixed carbon content is between 26.2 and 42.4%wt. (dry basis), and increases with an increase in the peak temperature. The carbon concentration in the biochar is in the range 42.8 to 47.0%wt. (dry basis). The biochar pH is in the range 6.9 to 11.2, and the electrical conductivity (EC) is in the range 2.2 to 5.0 mS/cm. |
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| ISSN: |
2352-4847
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| DOI: | 10.1016/j.egyr.2019.09.063 |
| Zugang: | Open Access |