H-Coal Pilot Plant: University of Kentucky Chemical Engineering Department evaluation of reverse-osmosis treatment of treated H-Coal wastewater

Technical Report · Sun May 01 04:00:00 EDT 1983

OSTI ID:5807011

Churton, B M

As part of an overall environmental evaluation of the H-Coal liquefaction process, sour water treatability studies have been performed. These studies consisted of the listed major components. These studies indicate that H-Coal Sour Water can be successfully treated for reuse or for discharge to public waters. In one of these projects the University of Kentucky performed an evaluation of reverse osmosis (R.O.) membranes and their treatment efficiency on treated H-Coal wastewater. The study had the following conclusions: Both the Dupont and Film-Tec R.O. membranes had chloride, sodium, conductivity and total organics rejections greater than 85%; the Albany R.O. membrane module rejections (at 200 psi) dropped to 70% at high feed waste concentrations; the dark color of the H-Coal wastewater (attributed to the presence of hydroquinone, resorcinol, catechol and other similar types of light sensitive compounds) experienced membrane rejection of greater than 95% with all three membranes; the decrease in flux rate across the membrane due to fouling and concentration polarization was in the range of 0% to 30% for the three membranes after correcting for osmotic pressure effects; the temperature studies (25/sup 0/C to 38/sup 0/C) demonstrated that the water flux rate could be increased substantially by operating at 38/sup 0/C without a significant loss in conductivity rejection; the total organic carbon present in the H-coal wastewater (which is biotreated Powdered Activated Carbon Treatment effluent) was shown to be a mixture of furmaric, maleic and formic acids; and based on the extensive experimental data, it can be concluded that the biotreated H-Coal wastewater could be concentrated to a range of 5X to 10X. At high conversion levels the drop in permeate quality must be considered for water reuse criteria. The detailed results of the University of Kentucky study are presented in this report as submitted to and edited by ASFI.

• Research Organization: Ashland Synthetic Fuels, Inc., KY (USA)
• DOE Contract Number: AC05-76ET10143
• OSTI ID: 5807011
• Report Number(s): DOE/ET/10143-33; ON: DE84000546
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
010800 -- Coal
Lignite
& Peat-- Waste Management
010900 -- Coal
Lignite
& Peat-- Environmental Aspects
COAL LIQUEFACTION
DATA
DIFFUSION
EXPERIMENTAL DATA
FILTRATION
FOULING
H-COAL PROCESS
HYDROGEN COMPOUNDS
INFORMATION
LIQUEFACTION
LIQUID WASTES
MEMBRANES
NUMERICAL DATA
OSMOSIS
OXYGEN COMPOUNDS
PERFORMANCE TESTING
RESEARCH PROGRAMS
SEPARATION PROCESSES
TESTING
THERMOCHEMICAL PROCESSES
WASTE WATER
WASTES
WATER
WATER TREATMENT