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Response of biological waste treatment systems to changes in salt concentrations
Author(s) -
Kincan D. F.,
Gaudy A. F.
Publication year - 1968
Publication title -
biotechnology and bioengineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.136
H-Index - 189
eISSN - 1097-0290
pISSN - 0006-3592
DOI - 10.1002/bit.260100408
Subject(s) - salt (chemistry) , yield (engineering) , substrate (aquarium) , chemistry , acclimatization , salt solution , biology , botany , materials science , ecology , organic chemistry , metallurgy
The effect of NaCl on the yield of biological solids and on the ability of continuously cultured heterogeneous microbial populations to remove substrate was assessed by changing the salt concentration in the inflowing synthetic waste. During the period of increasing the salt concentration to 30,000 mg/l the system could not maintain a high substrate removal efficiency. However, after an acclimation period the system regained its former efficiency. Upon diluting the salt out of the system, a significant rise in cell yield was noted as the salt level passed through the range 8,000–10,000 mg/l. It was found that steady operation at a salt level of 8,000 mg/l sustained the cell yield at a high level.