Membrane-controlled processes for the energy-efficient conversion of sludges to fuels and marketable chemicals
Studies were carried out on the concentration of primary and secondary sludges by ultrafiltration, and the operation of a membrane-assisted anaerobic digester to treat these sludges. Auxiliary devices including water-spilling and membrane solvent extraction were tested for their feasibility in the ehhancement of digester operations and the recovery of valuable byproducts. It was shown that membrane-facilitated digestion can increase the rate of these processes by a factor of ten, together with a substantial decrease in the amount going to waste, and with the ultrafiltration permeate containing appreciable concentrations of valuable byproducts which could be concentrated and recovered using a combination of other membrane technologies. The utility of electrodialytic water-splitting and membrane solvent extraction was demonstrated. All of this was accomplished with a small three-liter bench-scale digester, the operation of which presented many problems because of its very small size and the difficulty in handling real sewage sludges.
- Research Organization:
- Columbia Univ., New York, NY (United States)
- DOE Contract Number:
- AC01-78CS20400
- OSTI ID:
- 5229806
- Report Number(s):
- DOE/CS/20400-1; ON: DE82013685
- Resource Relation:
- Other Information: Portions of document are illegible
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
SEWAGE SLUDGE
ANAEROBIC DIGESTION
ELECTRODIALYSIS
SOLVENT EXTRACTION
ULTRAFILTRATION
ACETATES
ACETIC ACID
BENCH-SCALE EXPERIMENTS
BY-PRODUCTS
FEASIBILITY STUDIES
FUELS
GAS ANALYSIS
GLUCOSE
MEMBRANES
PILOT PLANTS
PURIFICATION
WASTE WATER
ALDEHYDES
BIOCONVERSION
CARBOHYDRATES
CARBOXYLIC ACID SALTS
CARBOXYLIC ACIDS
DIALYSIS
DIGESTION
EXTRACTION
FILTRATION
FUNCTIONAL MODELS
HEXOSES
HYDROGEN COMPOUNDS
LIQUID WASTES
MANAGEMENT
MONOCARBOXYLIC ACIDS
MONOSACCHARIDES
ORGANIC ACIDS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PROCESSING
SACCHARIDES
SEPARATION PROCESSES
SEWAGE
SLUDGES
WASTE MANAGEMENT
WASTE PROCESSING
WASTES
WATER
320604* - Energy Conservation
Consumption
& Utilization- Municipalities & Community Systems- Municipal Waste Management- (1980-)