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Autor*in

  • Adam, Christian (214)
  • Vogel, Christian (40)
  • Krüger, Oliver (30)
  • Adamczyk, Burkart (21)
  • Herzel, Hannes (16)
  • Simon, Franz-Georg (16)
  • Weimann, Karin (13)
  • Peplinski, Burkhard (12)
  • Kley, Gerd (10)
  • Kratz, S. (10)
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Erscheinungsjahr

  • 2021 (3)
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Dokumenttyp

  • Zeitschriftenartikel (76)
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Referierte Publikation

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Schlagworte

  • Sewage sludge ash (30)
  • Phosphorus recovery (22)
  • Phosphor (17)
  • Klärschlammasche (16)
  • Recycling (16)
  • Thermochemical treatment (15)
  • Phosphorus (14)
  • Klärschlamm (13)
  • Sewage sludge (13)
  • Bauschuttaufbereitung (7)
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Organisationseinheit der BAM

  • 4 Material und Umwelt (111)
  • 4.4 Thermochemische Reststoffbehandlung und Wertstoffrückgewinnung (110)
  • 4.3 Schadstofftransfer und Umwelttechnologien (8)
  • 1 Analytische Chemie; Referenzmaterialien (5)
  • 1.4 Prozessanalytik (4)
  • 6 Materialchemie (4)
  • 6.3 Strukturanalytik (4)
  • 5 Werkstofftechnik (2)
  • 5.6 Glas (2)
  • 7 Bauwerkssicherheit (2)
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Möglichkeiten der thermochemischen Behandlung von Reststoffen (2010)
Adam, Christian ; Brenneis, Rudolf ; Adamczyk, Burkart
Technische Möglichkeiten der Phosphorrückgewinnung aus Klärschlammaschen (2010)
Adam, Christian ; Vogel, Christian
Schlacken/Aschen - Herstellung von Düngemitteln (2010)
Adam, Christian ; Brenneis, Rudolf
Technische Möglichkeiten der Phosphorrückgewinnung aus Klärschlammaschen (2010)
Adam, Christian ; Vogel, Christian
Möglichkeiten der thermochemischen Behandlung von Reststoffen (2010)
Adam, Christian
Recovery of chromium from AOD-converter slags (2010)
Adamczyk, Burkart ; Brenneis, Rudolf ; Adam, Christian ; Mudersbach, D.
Slags from the production of high-alloyed steel contain both chemically bound chromium (mainly as Cr2O3) in the mineral fraction and elemental chromium in the metallic remainders. Thermochemical post treatment of the slag in an electric arc furnace under reducing conditions enables the nearly complete recovery of the total amount of chromium in form of a metallic alloy. The best results were achieved by resistance melting (submerged electrodes) with addition of a reducing agent into the melt. The efficiencies of the reducing agents carbon, aluminium, silicon (as ferrosilicon) and silicon carbide were investigated and compared. As aluminium is the strongest reducing agent, it is less selective and reduces much more SiO2 than Cr2O3. While SiC shows only low reactivity because of its high thermal resistance, carbon and silicon had the highest reducing potentials: More than 97% of the chemically bound chromium can be recovered by application of these reducing agents. Due to the high temperature required for the reduction of the chromium compounds, the reduction of SiO2 as an undesired side reaction cannot be avoided. However, compared with mechanical procedures that are limited to the recovery of the metallic remainders, the total chromium recovery can be significantly increased by the described reductive melting procedure.
Heavy metal removal from sewage sludge ash analyzed by thermogravimetry (2011)
Vogel, Christian ; Adam, Christian ; Unger, M.
A high temperature (1000 °C) thermochemical process for heavy metal removal from sewage sludge ash via the chloride pathway was investigated by thermogravimetry/differential thermal analysis (TG/DTA). TG and DTA measurements gave information about secession and evaporation of water, HCl, and heavy metal chlorides at different temperatures. Additionally, gaseous water and hydrochloric acid which occurred in the process were detected by an FT-IR detector that was coupled to the TG/DTA-system. Heavy metal chlorides which were also formed in the process cannot be detected by this technique. For that reason the outlet gas of the TG/DTA-system was discharged into washing flasks filled with water for absorption. The washing flasks were replaced in temperature steps of 50 °C and the heavy metal concentrations of the solutions were determined by ICP-OES. The temperature-dependent formation/evaporation of different heavy metal chlorides was analyzed and compared for two different thermochemical processes using magnesium chloride hydrate or calcium chloride hydrate as Cl-donors. In both cases evaporation of Cd, Cu, Pb, and Zn was observed from 600 °C, whereas As, Cr, and Ni remained in the solid state. The results were discussed against the background of thermodynamic calculations.
Chemical reactions during the preparation of P and NPK fertilizers from thermochemically treated sewage sludge ashes (2010)
Vogel, Christian ; Adam, Christian ; Peplinski, Burkhard ; Wellendorf, Stephan
SUSAN - Sustainable and safe re-use of municipal sewage sludge for nutrient recovery (2010)
Ante, A. ; Trumpler, A. ; Niermann, S. ; Decker, Renate ; Hermann, L. ; Adam, Christian
SUSAN - Sustainable and safe re-use of municipal sewage sludge for nutrient recovery - Large scale considerations of the thermo-chemical heavy metal removal from sewage sludge for the safe recycle of phosphorus (2009)
Ante, A. ; Trumpler, A. ; Niermann, S. ; Decker, R. ; Herrmann, L. ; Adam, Christian
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