Characterization of the coal derived humic acids from Mukah, Sarawak as soil conditioner
نویسندگان
چکیده
منابع مشابه
Tetracycline sorption to coal and soil humic acids: an examination of humic structural heterogeneity.
The sorption properties of tetracycline were compared between a coal humic acid (CHA) and a soil humic acid (SHA) under various solution chemistry conditions. Structural characteristics of the two humic acids were quantified in detail by elemental analysis, solid-state (13)C nuclear magnetic resonance (NMR), acid-base titration, and Zeta potential measurement. The CHA consists primarily of poly...
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Subbituminous coal was employed as raw material for the extraction of humic acid (HA) to be applied as ceramic dispersant. The extraction process is described in detail, showing it is a relatively simple procedure, which makes the production attractive and feasible on a laboratory scale. The HA was characterized via elemental analysis, infrared spectroscopy (FTIR), thermal behavior (TGA/DTA), z...
متن کاملChemical characterization of humic substances occurring in the peats of Sarawak, Malaysia
The chemical characteristics of humic substances (HS) extracted from several samples of peat soils of Sarawak, Malaysia, were determined by size exclusion chromatography, FTIR, UV–Vis, acid–base titration, and elemental and total hydrolysable carbohydrate analyses. The results showed that the total acidity of these HS ranged between 5.8 and 8.3 meq/g, with a clear indication that the fulvic aci...
متن کاملNature of Plant Components Identified in Soil Humic Acids
INTRODUCTION The origin of the humic acid fraction of soils is still unclear in spite of extensive investigations accomplished over the last years (ref. 1). Different origins have been proposed, based on the most recent theory or on the applica tion of the latest analytical method. Thus, it has been proposed that soil humic acids are derived from lignins, microbial activity and synthesis of me...
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ژورنال
عنوان ژورنال: Journal of the Brazilian Chemical Society
سال: 2006
ISSN: 0103-5053
DOI: 10.1590/s0103-50532006000300023