Isolation of humic acids from leonardite

Conference · Tue Dec 31 00:00:00 EST 1996

OSTI ID:549534

Shah, S B; Tartamella, T L; Lee, S ^[1]; Kulik, C J ^[2]

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1. Univ. of Akron, OH (United States). Dept. of Chemical Engineering
2. Ancon International, Newark, CA (United States)

The primary interest in humic acid is its use as an effective fertilizer. Humic substances, found commonly in low-rank coals, enhance plant growth directly through positive physiological effects and indirectly by affecting the properties of the soil. Humic acids have traditionally been defined as the dark-colored organic matter that can be extracted from soil by dilute alkali and other reagents and which is insoluble in dilute acid. This paper discusses the isolation of humic acid from leonardite using the alkaline extraction method and the subsequent characterization using elemental analysis and infrared spectroscopy techniques. In this study, yields of more than 60% were obtained.

• OSTI ID: 549534
• Report Number(s): CONF-960954-; TRN: IM9751%%217
• Resource Relation: Conference: 13. annual international Pittsburgh coal conference, Pittsburgh, PA (United States), 3-7 Sep 1996; Other Information: PBD: 1996; Related Information: Is Part Of Thirteenth annual international Pittsburgh coal conference: Proceedings. Volume 2; Chiang, S.H. [ed.]; PB: 819 p.
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
LIGNITE
HUMIC ACIDS
MATERIALS RECOVERY
FERTILIZERS
ALKALINE HYDROLYSIS
CHEMICAL REACTION YIELD
CHEMICAL ANALYSIS