992 resultados para municipal sewage sludge
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Mode of access: Internet.
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Mode of access: Internet.
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Vita.
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Thesis (M.S.)--University of Illinois at Urbana-Champaign, 1965.
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"Supported by U.S. Public Health Service Traineeship EH66-616 and U.S. Dept. of Interior Research Project WP 01011-01."
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Dissertation University of Illinois.
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"UILU-ENG-71-2012."
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"Supported by Federal Water Pollution Control Administration Research Grant WP 1011."
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Performed for the Office of Solid Waste, under contract no. 68-01-3945.
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Mode of access: Internet.
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Includes bibliographical references.
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"Contract: EA99"
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"SWS Contract report 429." -- Cover.
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Nowadays, with increase amounts of sludge derived from the treatment of domestic sewage put pressure into research on systems for the adequate use of these materials. The aim of the present work is to study the use of sludge ash, from sintering and calcinated process, as a raw material for the ceramic industry. Using the sewage sludge ashes as ceramic raw material there will be no contamination of soil and underground water. Metals and toxic compounds like Al, Fe, Ba, Cr, Cu, Mn and Zn oxides were analyzed and characterized by X-ray fluorescence (XRF), scanning electron microscopy (SEM) and plasma emission spectroscopy (ICP-OES). The leached material was chemically analyzed where the integration of oxides into the ceramic matrix of sludge ash was observed. Residual decomposition was analyzed by TG, DTG and DTA curves.
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This research aims to monitor the humification process of domestic sewage sludge resulted from the vermicomposting, evaluating, also, the possibility of using the final product (vermicompost) in agricultural soils. The monitored chemical variables during the 90 days of vermicomposting were: humidity rate, organic matter content, nitrogen and phosphorus content, pathogenic organisms concentration, total organic carbon, acidity, CEC, C/N ratio, CEC/TOC ratio, and humic and fulvic acids content. The change in these variables during the vermicomposting process showed that this technique is effective for use in the maturation of the residue.