Mechanism of flocculation of coal particles by polyethyleneoxide

Journal Article · Tue Jan 01 04:00:00 EST 1985 · Coal Prep. (Gordon and Breach); (United States)

DOI:https://doi.org/10.1080/07349348508905150· OSTI ID:6407945

Gochin, R J; Lekili, M; Shergold, H L

The flocculation of coal (anthracite) suspension by a high molecular weight polyethylene oxide (PEO) has been studied and the results correlated with the adsorption of PEO at the coal/water interface. The effects of pH, inorganic salts, H-bonding agents, methylation and oxidation on the adsorption and flocculation behaviour have been determined. The mechanism of polymer adsorption would appear to be through hydrophobic interactions between the -CH2-groups in the polymer molecule and the coal surface. However, the small decrease in polymer adsorption obtained in the presence of H-bonding competitors suggests that H-bonding may have a minor role in the adsorption process. 26 references.

• OSTI ID: 6407945
• Journal Information: Coal Prep. (Gordon and Breach); (United States), Journal Name: Coal Prep. (Gordon and Breach); (United States) Vol. 2:1; ISSN COAPD
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600 -- Coal
Lignite
& Peat-- Properties & Composition
013000* -- Coal
Lignite
& Peat-- Transport
Handling
& Storage
ADSORPTION
ALCOHOLS
ANTHRACITE
BLACK COAL
CARBON
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
COAL FINES
COAL PREPARATION
DISPERSIONS
ELEMENTAL MINERALS
ELEMENTS
ENERGY SOURCES
FLOCCULATION
FOSSIL FUELS
FUELS
GLYCOLS
GRAPHITE
HYDROXY COMPOUNDS
KINETICS
MATERIALS
METHYLATION
MINERALS
NONMETALS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OXIDATION
PH VALUE
POLYETHYLENE GLYCOLS
POLYMERS
PRECIPITATION
REACTION KINETICS
SEPARATION PROCESSES
SORPTION
SUSPENSIONS