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Biological purification of water pollutants depends upon a complex balance of organisms and environment conducive to effective metabolism. The bench scale test is useful to determine effects of a given waste water on that balance and to suggest controls promoting optimum purification....
Because branched‐chain alkyl benzene sulfonate (ABS) is well known to create water pollution problems in surface water and ground water, a study was made on the biodegradation of this surfactant along with other anionic and nonionic surfactants in detergents by water bacteria. Biodegradation...
Stabilization ponds have been widely accepted in recent years, following studies that established deeper understanding of the phenomena associated with the stabilization process. A compilation of information on the use of both sewage and industrial ponds is presented showing types and...
Phenol‐bearing waste waters continue to be an area of wide concern for various industries faced with the task of cleaning up effluents containing relatively small amounts of these materials. The microbiological aspects of the degradation of these materials in pure culture and waste treatment...
Sphaerotilus is usually present in biological waste treatment processes and is considered to be a nuisance organism because it may cause bulking of activated sludge. However, it may play an important role in the decomposition of putrescible organic matter in properly operated biological waste...
It has been found that a bacterium (isolant C12B) grew poorly on 6 and 8 carbon alcohols, well on 10 and 12 carbon alcohols, and slowly but well on the 14 to 18 carbon compounds. Unexpectedly, resting cells oxidized the 6 and 8 carbon compounds most readily and cell‐free extracts oxidized 6, 8,...
With the emphasis being given to the development of biologically soft detergents, it is necessary to establish eriteria defining biodegradability of these materials. It is the authors' opinion that a biologically soft detergent should have the following characteristics: (1) Under normal...
These experiments show that ABS can be adsorbed and desorbed from microbial cell surfaces. The adsorption equilibria between the free and adsorbed phases are primarily influenced by the pH of the system. The effects of ABS upon the biochemical activities of bacteria depended upon the amount of...
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