Ultrasonic application to boost hydroxyl radical formation during Fenton oxidation and release organic matter from sludge.
Ultrasonic application to boost hydroxyl radical formation during Fenton oxidation and release organic matter from sludge.
复制标题
DOI：
10.1038/srep11419
复制
发表时间：
2015-06-12
影响因子：
4.6
通讯作者：
Tian S
中科院分区：
文献类型：
--
作者：
Gong C;Jiang J;Li D;Tian S
我们研究了超声波和芬顿试剂对废水处理厂污泥分解的超声波耦合芬顿氧化 (U+F) 预处理工艺的影响。结果表明，U+F处理可以显着增加污泥上清液中可溶性化学需氧量（SCOD）、总有机碳（TOC）和细胞外聚合物（EPS）浓度。该方法比单独使用超声波（U）或芬顿氧化（F）处理更有效。与单独使用U和F相比，U+F处理使SCOD的释放量分别增加2.1倍和1.4倍。与单独使用 U 相比，U+F 处理使 EPS 的释放增加了 1.2 倍。荧光显微镜观察发现，经过U+F处理后，污泥的粒径明显变细，微观结构更加疏松，并且根据荧光分光光度计，羟基自由基(OH·)浓度从F处理的0.26 mM增加到U+F处理的0.43 mM。这表明U+F处理改善了污泥中有机物的释放。
We examined the effects of ultrasound and Fenton reagent on ultrasonic coupling Fenton oxidation (U+F) pre-treatment processes for the disintegration of wastewater treatment plant sludge. The results demonstrated that U+F treatment could significantly increase soluble chemical oxygen demand (SCOD), total organic carbon (TOC), and extracellular polymeric substances (EPS) concentrations in sludge supernatant. This method was more effective than ultrasonic (U) or Fenton oxidation (F) treatment alone. U+F treatment increased the release of SCOD by 2.1- and 1.4-fold compared with U and F alone, respectively. U+F treatment increased the release of EPS by 1.2-fold compared with U alone. After U+F treatment, sludge showed a considerably finer particle size and looser microstructure based on fluorescence microscopy, and the concentration of hydroxyl radicals (OH•) increased from 0.26 mM by F treatment to 0.43 mM by U+F treatment based on fluorescence spectrophotometer. This demonstrated that U+F treatment improves the release of organic matter from sludge.
登录
查看更多内容
影响因子：
11.4
作者：
Jiang, Jianguo;Gong, Changxiu;Zhang, Yujing
通讯作者：
Zhang, Yujing
采用污泥芬顿氧化工艺的膜生物反应器 (MBR) 系统的性能可最大限度地减少剩余污泥的产生
影响因子：
13.6
作者：
He Ming-he;Wei Chao-hai
通讯作者：
Wei Chao-hai
影响因子：
2.7
作者：
Jiang, Jianguo;Yang, Shihui;Zhang, Qunfang
通讯作者：
Zhang, Qunfang
影响因子：
8.4
作者：
Pham, T. T. H.;Brar, S. K.;Surampalli, R. Y.
通讯作者：
Surampalli, R. Y.
影响因子：
12.8
作者：
Gao, Shengpu;Hemar, Yacine;Lewis, Gillian D.
通讯作者：
Lewis, Gillian D.