Effect of temperature on biodegradability of surfactants in aquatic microcosm system

Y. Takamatsu, O. Nishimura, Y. Inamori, R. Sudo, M. Matsumura

研究成果: Conference article査読

11 被引用数 (Scopus)

抄録

Microcosm systems consisting of producer, decomposer and predator were employed to assess the effect of surfactants (LAS and soap) on an aquatic ecosystem at various temperatures. At all test temperatures (10, 20, 25 and 30°C), stable ecosystems were formed with regard to the biomass and species composition in flasks. In the stationary phase, temperature dependency of ATP was observed and the biodegradation rate of the surfactants in microcosm system at low temperature were slower than that at high temperature. Cyclidium glaucoma, Philodina sp. and Aeolosoma hemprichi as predator were more influenced by surfactants at low temperature. No observed effect concentration (NOEC) of LAS was less than 0.5mg·1-1 at 10°C, less than 1.5mg·1-1 at 20, 25°C and less than 2.5mg·1-1 at 30°C. NOEC of soap was less than 10mg·1-1 at 10°C, less than 30mg·1-1 at 20, 25°C. it was found that biodegradabilty of surfactants differed with temperature, which changed the effects of surfactants on microorganisms.

本文言語English
ページ(範囲)61-68
ページ数8
ジャーナルWater Science and Technology
34
7-8 -8 pt 4
DOI
出版ステータスPublished - 1996 12 24
外部発表はい
イベントProceedings of the 1996 18th Biennial Conference of the International Association on Water Quality. Part 4 - Singapore, Singapore
継続期間: 1996 6 231996 6 28

ASJC Scopus subject areas

  • Environmental Engineering
  • Water Science and Technology

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