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Title: Nitride-based controlled-release fertilizers and process for making same

A controlled-release solid nitride fertilizer from fly ash and a method for making are described. The fertilizer includes a nitrogen source including at least one solid nitride combined with at least one precipitation-inhibiting agent and with at least one moisture-retention agent, all compressed together to form a porous release structure that in contact with water releases ammonium ions as a nitrogen nutrient at a substantially uniform release rate over a selected release period and thereby maximizes nitrogen-use efficiency by plants.
Inventors:
;
Issue Date:
OSTI Identifier:
1460562
Assignee:
BATTELLE MEMORIAL INSTITUTE (Richland, WA) PNNL
Patent Number(s):
10,005,699
Application Number:
15/222,632
Contract Number:
AC05-76RL01830
Resource Relation:
Patent File Date: 2016 Jul 28
Research Org:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English