Biodegradability of detergent powder surfactants in the river water die-away test

• Autorzy: Siwinski P. , Szymanski A. , Lukaszewski Z.
• Języki publikacji: EN

Abstrakty

EN

A modified river water die-away test is developed for controlling the biodegradability of anionic surfactants (AS) and non-ionic surfactants (NS) of detergent powders. The tested powder undergoes a procedure replicating the washing process. An aliquot of the final solution is introduced into river water exhibiting good biodegradative ability. Primary biodegradation of both types of surfactant is monitored over 20 days and the MBAS method used for determining AS and the indirect tensammetric method for NS. Twelve detergent powders purchased in Polish supermarkets in 1995 are analysed. AS in all tested powders exhibit a relatively fast and complete biodegradation. NS are very diverse in terms of biodegradability: two powders had NS not satisfying the 80% biodegradability limit.

Słowa kluczowe

EN

anionic surfactant; biodegradation; bidegradability; river water die-away test; surfactant; non-ionic surfactant; detergent powder

• Wydawca: -
• Czasopismo: Polish Journal of Environmental Studies
• Rocznik: 1998
• Tom: 07
• Numer: 4
• Opis fizyczny: p.251-256,fig.,ref.

Twórcy

autor

Siwinski P.

• Technical University of Poznan, Piotrowo 3, 60-965 Poznan, Poland

autor

Szymanski A.

autor

Lukaszewski Z.

Bibliografia

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