Substrate for soil improvement having a water-storing property, method for producing same, and use thereof
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United States of America Patent
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Mar 31, 2015
Grant Date -
Dec 20, 2012
app pub date -
Feb 10, 2011
filing date -
Feb 10, 2010
priority date (Note) -
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Abstract
The invention relates to a method for producing a lignin-based substrate for soil improvement having a water-storing property, characterized by the following steps: providing lignin, oxidizing the lignin in either an aqueous alkaline suspension or a pH-neutral aqueous suspension, the pH-neutral aqueous suspension being converted into an alkaline substance after the lignin has been oxidized, cross-linking the lignin in an aqueous alkaline medium using multifunctional compounds, and neutralizing, drying, and comminuting the lignin.
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Cited Art Landscape
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