Results 21 to 30 of about 25,613 (137)
针对某印染废水处理厂水解酸化段运行异常的问题,依托水解酸化序批式反应器(SBR)开展问题诊断及解决方案研究。通过历时取样实验确认了水解酸化过程中挥发性脂肪酸(VFAs)不升反降和有机氮氨化率偏低的问题;通过控制低pH(pH=5)运行实验清除消耗VFAs的微生物,实现VFAs累积;通过非控制pH运行实验实现VFAs的累积和有机氮氨化率的提高;通过历时取样实验确定水解酸化的最佳反应时间为10 h。长期运行实验显示,在平均进水COD为1 085 mg/L、氨氮为9.5 mg/L、VFAs为43.7 mg ...
古航坤 +4 more
doaj
ABSTRACT Self‐concept and self‐efficacy have received much attention from second/foreign language (L2) researchers. However, very few studies have empirically deciphered their similarities and distinctions. Even fewer have investigated how their contributions to L2 achievement vary across L2 proficiency levels.
Cai Yuyang, Xing Keke
wiley +1 more source
通过在废水中加入NaCl电解质,考察了电解阳极间接氧化法制药废水的处理效果。实验分析了废水中电解质NaCl对制药废水电解过程中CODCr、色度去除的影响,并对不同用量NaCl电解效果进行了对比。另外还用电解质Na2 SO4 、NaNO3 作了对比实验来说明NaCl产生的电解阳极间接氧化的存在。最后对甲红霉素废水进行中试实验,结果表明,NaCl电解产生的NaClO具有极强的氧化性,促进了CODCr的去除,同时还发现,废水中氨氮的存在不利于废水CODCr的去除。
张月锋, 金一中, 徐灏
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Insights Into the Temperature‐Dependent Oxidation Mechanism of Metallic Cerium in H2O‐N2 Atmospheres
ABSTRACT Metallic cerium (Ce), a widely used surrogate for actinide metals, enables mechanistic studies of reactions in complex gas environments under controlled and safer laboratory conditions. Here, the oxidation behavior of Ce in H2O‐N2 mixed atmospheres was investigated from 200°C to 350°C using in situ thermogravimetry–mass spectrometry, in situ X‐
Kun Huang +10 more
wiley +1 more source
两种氮杂冠醚 水杨醛亚胺Schiff碱合钴(Ⅱ)被作为水解酶模型,催化羧酸酯(PNPP)水解.研究了该水解反应的动力学和机理.提出了水解反应的动力学模型.结果表明,在室温(25℃)条件下,这类钴(Ⅱ)配合物催化PNPP水解速率随着缓冲溶液pH值的增大而提高,表现出高的催化活性.
李建章 +5 more
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ABSTRACT Esophageal cancer is the seventh leading cause of cancer death, and the energy depletion in cancer cells can be achieved through synergistic therapy. The integration of sonodynamic therapy and chemotherapy offers a promising comprehensive treatment strategy for esophageal cancer.
Mengya Li +4 more
wiley +1 more source
在工业废水处理中,作为预处理单元的水解(酸化)反应器,不但降低了废水的CODCr,而且提高了废水的可生化性。作者论述了水解(酸化)反应器的特点及原理;介绍了水解(酸化)反应器的类型及其在工程应用中的效果;讨论了影响水解(酸化)反应器运行的主要因素及其设计要点;展望了水解(酸化)反应器的应用前景及研究领域。
程凯英, 黄石峰, 邓耀杰
doaj
考察了铁碳微电解+A/O组合工艺对实际有机硅废水的处理过程。结果表明,铁碳微电解降解符合一级反应动力学;组合工艺对COD总去除率达到了96%,出水达到《污水综合排放标准》(GB 8978—1996)表4的一级标准,说明该组合工艺具备稳定达标运行的能力。三维荧光分析表明,原水中存在难降解峰峰A、峰B,微电解和厌氧处理后出现了易降解峰峰C和峰D,最终出水中仅保留与原水强度相当的峰B。
刘喆 +5 more
doaj
Efficient Photocatalytic Removal of Toluene by Synergistic FeCe/TiO2: Performance and Mechanism
ABSTRACT Efficient removal of volatile organic compounds (VOCs) in confined spaces is crucial for environments such as spacecraft and deep‐sea submarines. Metal modification is an effective strategy to enhance the light absorption capacity of titanium dioxide (TiO2) and suppress the recombination of photogenerated charge carriers.
Ke Xu +10 more
wiley +1 more source
由马来酸酐(顺丁烯二酸酐)聚合、再水解而得的低分子量聚马来酸(简称PMA)是一种阴离子聚电解质[1],它主要是作为阻垢剂用于循环水化学处理的。因为水解不可能非常彻底,聚合物中会保留极少量未水解的马来酸酐,因而它又名水解聚马来酸酐。
鲍其鼐
doaj

