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Toxicity Assessment of Raw and Ozonated Textile Biocides

机译:生和臭氧纺织品杀菌剂的毒性评估

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摘要

The acute toxicity of two biocides frequently used in textile finishing as broad-spectrum antibacterial/antifungal agents was studied using the marine algae Phaeodactylum tricornutum and a standard activated sludge inhibition test(ISO 8192).The influence of ozonation on several environmental sum parameters was also assessed.Both biocides exhibited significant toxicity toward the test organisms studied.Ozonation at elevated pH(11.5)and high doses(3.0-3.4 mg O_3/mg COD_o)was necessary for an acceptable reduction in the examined collective environmental parameters.The activated sludge inhibition tests revealed that 30 min of ozonation corresponding to a dose of 1.7-1.9 mg O_3/mg COD_o accounted for practically complete detoxification of the aqueous biocides,while for the marine algae test,complete toxicity reduction could not be achieved after 30 min of ozonation.
机译:利用海洋藻类Triaeactylum tricornutum和标准的活性污泥抑制试验(ISO 8192)研究了两种常用作纺织品整理剂的广谱抗菌/抗真菌剂的急性毒性,以及臭氧化对几个环境总和参数的影响。两种杀生物剂均对所研究的测试生物显示出显着毒性。在可接受的pH值(11.5)和高剂量(3.0-3.4 mg O_3 / mg COD_o)下进行臭氧分解是必要的,以减少所检查的总体环境参数。试验表明,相当于1.7-1.9 mg O_3 / mg COD_o剂量的臭氧作用时间为30分钟,实际上是对水生杀生物剂的完全解毒,而对于海藻试验,臭氧作用时间为30分钟后无法完全降低毒性。

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