Relationships between acute toxicities of para nitrophenol (p-NP) and nitrobenzene (NB) to Daphnia magna and Photobacterium phosphoreum: physicochemical properties and metabolites under anaerobic/aerobic sequentials.
Relationships between acute toxicities of para nitrophenol (p-NP) and nitrobenzene (NB) to Daphnia magna and Photobacterium phosphoreum: physicochemical properties and metabolites under anaerobic/aerobic sequentials.
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DOI：
10.1016/j.jhazmat.2010.10.030
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发表时间：
2011-01
影响因子：
13.6
通讯作者：
D. Sponza;O. S. Kuşçu
中科院分区：
文献类型：
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作者：
D. Sponza;O. S. Kuşçu
在本研究中，使用 Microtox 和 Daphnia magna 测试，在高速连续厌氧迁移毯 (AMBR)/好氧完全搅拌釜反应器 (CSTR) 中研究硝基苯 (NB) 和对硝基苯酚 (p-NP) 的急性毒性。经过连续厌氧和好氧处理后，在含有 40.00mg/L p-NP 的废水中，对 Microtox 细菌的抑制率分别从最初的 78.10% 下降到 48.20% 和 4.00%。含60.00mg/L NB的进水废水经厌氧和好氧处理后，抑制率分别由72.10%下降至45.30%和4.00%。在整个连续系统的流出物中，p-NP 和 NB 的急性毒性去除率分别为 94% 和 93%。进水中的急性毒性取决于母体 NB 和 p-NP 浓度及其理化性质，如 Microtox 细菌和大型溞的疏水性、辛醇/水分配系数和蒸汽密度，而厌氧反应器流出物中的毒性强烈依赖于 Microtox 测试中的 p-NP（对氨基苯酚、苯酚、NH4-N）和 NB（苯胺）的代谢物。该废水对大型溞无毒。
In this study, the acute toxicities of nitrobenzene (NB) and para nitrophenol (p-NP) were investigated in a high rate sequential anaerobic migrating blanket (AMBR)/aerobic completely stirred tank reactor (CSTR) using Microtox and Daphnia magna tests. After sequential anaerobic and aerobic treatments, the inhibitions in the Microtox bacteria decreased from an initial 78.10–48.20% and 4.00%, respectively, in wastewater containing 40.00mg/L p-NP. The inhibitions of the influent wastewater containing 60.00mg/L NB decreased from 72.10% to 45.30% and to 4.00% after anaerobic and aerobic treatment, respectively. The acute toxicity removals were 94% and 93% in the effluent of the whole sequential system, for p-NP and NB, respectively. The acute toxicity in the influent was dependent on the parent NB and p-NP concentrations and ons their physicochemical properties such as hydrophobicity, octanol/water partition coefficient and vapour density for both Microtox bacteria and Daphnia magna while the toxicity in the effluent of the anaerobic reactor was strongly dependent on the metabolites of p-NP (p-amino phenol, phenol, NH4-N) and NB (aniline) for Microtox test. This effluent was not toxic to Daphnia magna.