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SD&C Technical phosphates as energy savers in machine dishwash performance
Author(s) -
Langguth R. P.,
Casey E. A.
Publication year - 1979
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02676368
Subject(s) - phosphate , energy consumption , reduction (mathematics) , sodium , energy conservation , chemistry , pulp and paper industry , legislation , computer science , environmental science , waste management , engineering , mathematics , electrical engineering , biochemistry , geometry , organic chemistry , political science , law
A savings of 20% in the energy consumption of machine dishwashers to meet government guidelines requires a significant reduction in the amount of water used or in the temperature of the wash. Performance testing has shown that a reduction in wash temperature from 140 F to 100 F results in a significant increase in the spotting and filming of glassware. This performance loss to conserve energy can be reduced by increasing the sodium tripolyphosphate (STP) content of the machine dishwash formulation. A reduction in the STP content of the formulation from the typical 40–45% level that would be required to comply with restrictive phosphate (8.7% P) legislation coupled with a decrease in wash temperature for energy conservation results in extremely poor washing performance.