Energy reduction in beet sugar processing by cossette liming
Under appropriate conditions of temperature and fresh Ca(OH)/sub 2/ application, demethylation occurs in the pectin in the cell walls of sugar beet cossettes, allowing Ca/sup 2 +/ to precipitate the pectin as calcium pectate. The calcium pectate will not degrade and pass into solution during subsequent hot extraction of sugar from the cossettes. This retention of pectin in the pulp was shown by 10 to 20% increases in solids weight in the pulp for a number of processing conditions. The toughened pulp produced by retention of calcium pectate allowed easier mechanical dewatering of the pulp which could save considerably on the heat normally required to dry the pulp for cattle feed. Beyond data reported in this paper, there are qualitative indications that the sugar juice extracted from limed cossettes is purer than standard juice, for pectin and colloidal materials remain in the pulp. Thus, much less purification of the juice with lime would be necessary than is required in standard beet-sugar processing, and the current 2% CaO used for purification may be cut almost in half. This represents another energy saving, for production of CaO at the factory is a major consumer of energy. These, along with other possible energy savings resulting from cossette liming (such as less water used for extraction, cold extraction, ion exchange of the purer juice), could produce an overall saving up to 20% of the energy currently used in beet-sugar processing. Some of these possibilities will be further investigated.
- Research Organization:
- Dept. of Agriculture, Berkeley, CA
- OSTI ID:
- 6240753
- Report Number(s):
- CONF-8009144-(Vol.3)
- Journal Information:
- ASAE Publ.; (United States), Vol. 5-81; Conference: ASAE national energy symposium, Kansas City, MO, USA, 29 Sep 1980
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
FOOD INDUSTRY
ENERGY CONSUMPTION
SUGAR BEETS
FOOD PROCESSING
ANIMAL FEEDS
CALCIUM HYDROXIDES
CATTLE
EXTRACTION
PECTINS
SACCHAROSE
ALKALINE EARTH METAL COMPOUNDS
ANIMALS
BEETS
BLOOD SUBSTITUTES
CALCIUM COMPOUNDS
CARBOHYDRATES
DISACCHARIDES
DOMESTIC ANIMALS
DRUGS
FOOD
HEMATOLOGIC AGENTS
HYDROGEN COMPOUNDS
HYDROXIDES
INDUSTRY
MAMMALS
OLIGOSACCHARIDES
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
POLYSACCHARIDES
PROCESSING
RUMINANTS
SACCHARIDES
SEPARATION PROCESSES
VEGETABLES
VERTEBRATES
320303* - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Equipment & Processes