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Gasification of char from wastewater solids pyrolysis

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Abstract:

Batch experiments were carried out to evaluate the effects of reaction temperature, reaction time, and char-to-steam ratio on the gasification of char from wastewater solids pyrolysis. The batch experiments revealed that more than 97% volatile solids reduction efficiency can be attained by maintaining reaction temperature at 950 to 1 000°C, reaction time at 30 minutes, and char-to-steam ratio at 1:10. The increase in reaction temperature resulted in a reduction in hydrogen-to-carbon monoxide (H2/CO) and carbon dioxide-to-carbon monoxide (CO2/CO) ratios, suggesting that the carbon–steam reaction reaches equilibrium at 800°C and higher. However, the Boudourd reaction continued to progress toward more product formation with the increase in temperature.

Keywords: CHAR; GASIFICATION; PYROLYSIS; STEAM INJECTION; WASTEWATER SOLIDS

Document Type: Research Article

DOI: https://doi.org/10.2175/106143098X126964

Publication date: 1998-03-01

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  • Water Environment Research (WER) is published monthly, including an annual Literature Review. A subscription to WER includes access to the latest content back to 1992, as well as access to fast track articles. An individual subscription is valid for 12 months from month of purchase.

    Water Environment Research (WER) publishes peer-reviewed research papers, research notes, state-of-the-art and critical reviews on original, fundamental and applied research in all scientific and technical areas related to water quality, pollution control, and management. An annual Literature Review provides a review of published books and articles on water quality topics from the previous year.

    Published as: Sewage Works Journal, 1928 - 1949; Sewage and Industrial Wastes, 1950 - 1959; Journal Water Pollution Control Federation, 1959 - Oct 1989; Research Journal Water Pollution Control Federation, Nov 1989 - 1991; Water Environment Research, 1992 - present.
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