MODIFIED BIOCHAR/COAL LIGNITES AND THEIR USE IN PHOSPHATE REMEDIATION AND AS SOLID AMENDMENTS

The present disclosure relates to improved processes for preparing modified lignite by reacting raw lignite with a source of magnesium (Mg2+) ions and a source of calcium (Ca2+) ions, washing the modified lignite (e.g., with water), drying, and pyrolyzing the treated lignite, and to the use of such...

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Bibliographische Detailangaben
Hauptverfasser:	MLSNA, Todd, MILLAR, Richard Clive, WARREN, Sita
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY FERTILISERS FERTILISERS CHARACTERISED BY THEIR FORM FERTILISERS PRODUCING CARBON DIOXIDE INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C MANUFACTURE THEREOF METALLURGY MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENTSUBCLASSES OF CLASS C05 MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVINGA SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES,SOIL-CONDITIONERS, WETTING AGENTS ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE PERFORMING OPERATIONS PHOSPHATIC FERTILISERS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	The present disclosure relates to improved processes for preparing modified lignite by reacting raw lignite with a source of magnesium (Mg2+) ions and a source of calcium (Ca2+) ions, washing the modified lignite (e.g., with water), drying, and pyrolyzing the treated lignite, and to the use of such products for phosphorous remediation. La présente invention concerne des procédés améliorés de préparation de lignite modifié par réaction de lignite brut avec une source d'ions magnésium (Mg2+) et une source d'ions calcium (Ca2+), lavage du lignite modifié (par exemple, avec de l'eau), séchage et pyrolyse du lignite traité ; ainsi que l'utilisation de tels produits pour la réhabilitation du phosphore.