PROCEDE DE PREPARATION D'UNE COMPOSITION HUMIQUE ARTIFICIELLE, ET APPLICATIONS

• Main Authors: RIGAL LUC, SILVESTRE JEROME, MORARD PHILIPPE, GOURDON CHRISTOPHE, PRAT LAURENT
• Format: Patent
• Language: French
• Published: 01.02.2008
• Subjects: CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT; FERTILISERS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; MANUFACTURE THEREOF; METALLURGY; ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

The invention concerns a method for preparing a synthetic humic composition which consists in subjecting a fresh lignocellulosic material composition to a thermal and mechanical treatment, called mixed treatment, consisting in: placing said fresh lignocellulosic material composition in a chamber (3) brought to a temperature ranging between 1000C and 2800C; subjecting said fresh lignocellulosic material composition to a dry process mechanical treatment including at least one maintained displacement of a rigid mechanical member (2a; 2b) inside and in contact with said fresh lignocellulosic material composition. Said mixed treatment enables a treated solid product to be prepared, more ore less intensely brown, rich in synthetic humic substances. Said synthetic humic substances, easily extracted, in particular via alkaline extraction, exhibit remarkable properties for the growth and development of plants, and can be used as fertilizer.