Detection of phosphate adsorption onto coal humic acids
Because of their acid-base, sorption, and chelation properties, coal humic acids have some potential applications in treating some of the pollutants arising from the mining, combustion, and conversion of coal and from stack gas scrubber effluents. This thesis is part of a research program designed to determine the interaction of coal humic acids with a variety of species found in wastewaters. The uptake of orthophosphates and polyphosphates by solid coal humic acids was examined. The preparation and purification of coal humic acids and iron humates are described. Details are given for the difficult analysis of phosphates in the presence of humic substances. It was found that coal humic acids adsorb phosphates very poorly. Since these materials effectively remove heavy metal ions from water the possibility is raised of selectively removing dangerous heavy metal ions while leaving nutrient phosphate in the water for fertilizer in water used for land reclamation or crop irrigation.
- Research Organization:
- Missouri Univ., Columbia (USA). Dept. of Chemistry
- OSTI ID:
- 7086087
- Report Number(s):
- PB-267998
- Country of Publication:
- United States
- Language:
- English
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010500* -- Coal
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& Peat-- Products & By-Products
010800 -- Coal
Lignite
& Peat-- Waste Management
ADSORPTION
CHEMICAL PREPARATION
HUMIC ACIDS
HYDROGEN COMPOUNDS
LIQUID WASTES
MANAGEMENT
ORGANIC ACIDS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PHOSPHATES
PHOSPHORUS COMPOUNDS
POLLUTION CONTROL
PROCESSING
PURIFICATION
SORPTION
SORPTIVE PROPERTIES
SYNTHESIS
WASTE MANAGEMENT
WASTE PROCESSING
WASTE WATER
WASTES
WATER
WATER POLLUTION CONTROL