ISSN:
1476-5535
Keywords:
Detergent builer
;
Biodegradation
;
Sodium polyglyoxylate
;
Laboratory ecosystem
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Process Engineering, Biotechnology, Nutrition Technology
Notes:
Summary Detergent builders such as zeolites, silicates and most organic polymers present concerns to some because of their environmental persistence. Sodium polyglyoxylate (SPG), on the other hand, is classified as readily biodegradable in a variety of aerobic and anaerobic biodegradation screening tests because it is extensively mineralized. Its persistence, however, is dependent on its rate of chemical hydrolysis to sodium glyoxylate, which is in turn controlled by parameters such as pH, temperature, metal ions and end capping group. The time for SPG's degradation ranges from a few hours at pH 5 to a few weeks at pH 9. Even though SPG is more persistent at alkaline pH values, it is rendered less bioavailable via precipitation/adsorption mechanisms. SPG's removal from and degradation in practically all ecosystems indicates that it will not have a significant impact on the environment with widespread use.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01569508
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