Effect of temperature on biodegradability of surfactants in aquatic microcosm system

被引：4
|
作者：
Takamatsu, Y
Nishimura, O
Inamori, Y
Sudo, R
Matsumura, M
机构：
[1] NATL INST ENVIRONM STUDIES, TSUKUBA, IBARAKI 305, JAPAN
[2] TOHOKU UNIV, FAC ENGN, AOBA KU, SENDAI, MIYAGI 980, JAPAN
来源：
WATER SCIENCE AND TECHNOLOGY | 1996年 / 34卷 / 7-8期
关键词：
temperature; surfactant; LAS; soap; biodegradabilty; microcosm; aquatic ecosystem;
D O I：
10.1016/S0273-1223(96)00725-1
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
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 degrees 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 0.5 mg . l(-1) at 10 degrees C, less than 1.5 mg . l(-1) at 20, 25 degrees C and less than 2.5 mg . l(-1) at 30 degrees C. NOEC of soap was less than 10 mg . l(-1) at 10 degrees C, less than 30 mg . l(-1) at 20, 25 degrees C. It was found that biodegradability of surfactants differed with temperature, which changed the effects of surfactants on microorganisms. Copyright (C) 1996 IAWQ.
引用
收藏
页码：61 / 68
页数：8
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