Effect of magnetic nanoparticles on the performance of activated sludge treatment system.
Effect of magnetic nanoparticles on the performance of activated sludge treatment system.
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磁性纳米颗粒对活性污泥处理系统性能的影响
DOI：
10.1016/j.biortech.2013.06.041
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发表时间：
2013-09
影响因子：
11.4
通讯作者：
倪寿清
中科院分区：
文献类型：
--
作者：
倪寿清
通过短期和长期暴露实验研究了磁性纳米颗粒对活性污泥的影响。50-200 mg/L的纳米颗粒短期存在会降低总氮（TN）的去除率，这是由于纳米颗粒冲击负荷的急性毒性所致。长期投加50 mg/L磁性纳米粒子可显著提高TN去除率，这与活性污泥的自我修复功能和磁诱导生物效应有关。污泥性质和胞外聚合物底物分泌受到影响。酶和FISH检测的其他研究表明，短期暴露于50 mg/L磁性纳米颗粒导致硝化细菌的减少。然而，酶亚硝酸盐氧化还原酶和关键酶的活性增加后，长期暴露。
Both short-term and long-term exposure experiments were carried out to investigate the influence of magnetic nanoparticles (NPs) on activated sludge. The short-term presence of 50–200 mg/L of NPs decreased total nitrogen (TN) removal efficiencies, resulted from the acute toxicity of a shock load of NPs. However, long-term exposure of 50 mg/L magnetic NPs were observed to significantly improve TN removal efficiency, partially due to the self-repair function of activated sludge and magnetic-induced bio-effect. Sludge properties and extracellular polymer substrates secretion were affected. Additional investigations with enzyme and FISH assays indicated that short-term exposure of 50 mg/L magnetic NPs led to the abatement of nitrifying bacteria. However, the activities of the enzyme nitrite oxidoreductase and key denitrifying enzymes were increased after long-term exposure.
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DOI：
10.2166/wst.2013.697
发表时间：
2013-03
期刊：
Water science and technology : a journal of the International Association on Water Pollution Research
影响因子：
--
作者：
Chuang Yao;Heng-yi Lei;Q. Yu;Shu-ping Li;Hualiang Li;Kaixuan Chen;Xinghong Zhang
通讯作者：
Chuang Yao;Heng-yi Lei;Q. Yu;Shu-ping Li;Hualiang Li;Kaixuan Chen;Xinghong Zhang
影响因子：
12.8
作者：
RAUNKJAER, K;HVITVEDJACOBSEN, T;NIELSEN, PH
通讯作者：
NIELSEN, PH
影响因子：
12.8
作者：
Labbé, N;Parent, S;Villemur, R
通讯作者：
Villemur, R
影响因子：
11.4
作者：
Limbach, Ludwig K.;Bereiter, Robert;Stark, Wendelin J.
通讯作者：
Stark, Wendelin J.
影响因子：
11.4
作者：
Kiser, M. A.;Westerhoff, P.;Hristovski, K.
通讯作者：
Hristovski, K.