富营养化水体中微囊藻毒素的降解方法研究进展   总被引：1，自引：0，他引：1  

邓方  万新军 《巢湖学院学报》2013,(3):61-65

微囊藻毒素（Microcystins,MCs）为富营养化水体中最常见的藻类毒素,其在饮用水中的存在可以导致人类癌症,因此对人们的健康构成了严重威胁。本文介绍了微囊藻毒素的结构和理化性质,综合比较了目前微囊藻毒素的各种降解方法,包括物理法、化学法和生物法等,同时讨论了微囊藻毒素降解最新的研究进展。  相似文献   

金属化合物对LDPE／IFR体系热降解行为的影响     

冯才敏  农彦彦  欧阳玉章  梁敏仪  刘洪波 《顺德职业技术学院学报》2013,(4):9-12

以多聚磷酸铵（APP）与自制齐聚物式成炭剂（OCA）复配成新型膨胀型阻燃剂（IFR）,采用热重分析仪（TGA）研究硼酸锌（ZB）和二氧化锰（MnO2）对LDPE／IFR体系热降解行为的影响。结果表明,氮气气氛下,金属化合物都能促使复合材料形成更多的残炭,但对热降解活化能的影响不明显;空气气氛下,MnO2可减缓材料的初始降解,使复合材料寿命延长,而ZB则使复合材料初始降解延长,寿命缩短。  相似文献   

Co-La改性Ti基板阳极电催化降解废水甲基橙     

郑志功  张志刚  陈杨青  蒋晓瑜  史荣会  牛佳 《福建工程学院学报》2019,(1):23-28

采用Co-La二元氧化物为活性涂层自制Ti基涂层电极,通过电催化降解模拟废水中的甲基橙分别考察电解质质量浓度、初始溶液pH、电压等不同因素对废水中甲基橙去除率的影响,并分析其原因。  相似文献   

光催化氧化-分光光度法测定巢湖水体中的总氮     

叶友胜  万新军  程乐华 《黄山学院学报》2008,10(3)

用TiO2光催化氧化将巢湖水体中各种化合物含的氮转化为硝酸盐后用分光光度法进行定量测定,同时研究了各种光催化氧化反应条件对氮的降解率影响.结果表明该法的线性范围为0.00-0.35mg/L,检出限为2.55×10-3mg/L.  相似文献   

Photocatalytic Degradation of Diethyl Phthalate with Surfactant Addition     

张天永扈娟  张友兰李彬 费学宁 《天津大学学报(英文版)》2006,12(4):258-263

This paper studies the adsorption of diethyl phthalate (DEP,an environmental hormone) on the surface of nanoscale TiO_2, effects of pH value of solutions, initial concentrations of DEP and additive surfactant on photocatalytic degradation and dynamics of DEP. Under ultra violet illumination, the interaction between DEP and surfactants including DBS (sodium dodecylbenzenesulfon-ate), CTAB (cetyltrimethylammonium bromide), and OP-10 (nonylphenol polyoxyethylene ether) was exploited from the perspective of degradation speed calculated by the data of high pressure liquid chromatography (HPLC) and UV-Vis spectra, respectively. Photocatalytic degradation of DEP followed pseudo first-order reaction kinetics. DEP as substrate degraded fast when its initial concentration was 130 mg/L. TiO_2 had certain adsorption ability of DEP. TiO_2 could adsorb the most DEP at the approximately neutral pH of 6.91. Degradation of DEP was not affected obviously by additives OP-10 and DBS. Degradation rate of DEP was not enhanced greatly in the presence of surfactants, but degradation of DBS was sped up. Degradation rate of DEP was depressed in the presence of additive CTAB. The more CTAB was added, the less DEP was degraded. Degradation rate of CTAB became slow with the increase of initial CTAB concentration. The possible adsorption models among TiO_2, DEP and surfactants were given.  相似文献   

基于暗通道先验与 YOLO 的水下河蟹识别研究     

贺帆  赵德安 《教育技术导刊》2020,19(5):29-32

为解决全自动均匀投饵作业船在河蟹养殖过程中投饵不精准问题,引入水下摄像设备采集图像,但采集的图像存在对比度低、模糊和图像退化等问题。为此,采用暗通道先验提高图像对比度。利用 YOLO 卷积神经网络技术快速准确地识别出低照度环境下的河蟹,识别准确率达到 98%,平均耗时 50ms。获得河蟹生长、分布信息后测算出河蟹养殖密度,为全自动均匀投饵作业船精准投饲提供数据支持  相似文献   

Ag2O/NaNbO3纳米复合材料的制备及其光催化性质     

李强  李世平  卢笑笑  马相东  韩浩  王康 《宜春学院学报》2020,(3):27-30

采用共沉淀法合成了Ag2O/NaNbO3复合光催化剂,并利用X射线衍射(XRD)和扫描电子显微镜(SEM)分别对其物相和形貌进行表征,用紫外可见漫反射光谱仪对其光学性质进行研究。在可见光下以罗丹明B(RhB)为目标降解物,检测了Ag2O/NaNbO3光催化剂的光催化性能。结果表明,与纯的Ag2O和纯的NaNbO3相比,Ag2O/NaNbO3复合光催化剂具有较高的光催化活性,其光催化活性的提升可能归结于p-n结的形成,使得光生电子空穴对的复合机率大大降低。  相似文献   

Experimental Study on Decolorization and Degradation of Reactive Brilliant Red X—3B in a White Rot Fungal Biofilm Reacor   总被引：1，自引：0，他引：1  

黄民生  黄荣  程永前  张国莹 《上海大学学报(英文版)》2001,5(3):260-264

Experimental results of an azo dye(reactive brilliant red X-3B,RBR X-3B) decolorization and degradation in a white rot fungal biofilm reactor were introduced and discussed.The fungal biofilm reactor is highly potential for dye decolorization and degradation with the highest decoloring rate of 95% within 96 hours reaction time at initial pH 4.5 under high nirogen level (HN) (24mmol/L ammonium tartrate)condition.Experimental conditions.such as nutrient nitrogen levels in reaction mixture and initial pH,significantly affected dye decolorization and degradation.Effluents from this bioilm reactor can be well treated to meet the discharging requirements by use of chemical flocculation.RBR X-3B was first absorbed onto fungal biomass and then degraded gradually,The SH-13 fungus monopolized the biofilm throughout the experiments,though the reactor was exposed to open air for 4 months.  相似文献   

纳米氧化锌/苯丙乳液内墙涂料的制备     

才红  邱贺媛 《韩山师范学院学报》2006,27(6):52-54,95

采用物理掺和法制备了纳米ZnO/苯丙乳液复合体内墙涂料,并对其进行了抑菌试验和甲醛降解试验研究,结果表明,加入纳米ZnO改性后的无机-有机复合体内墙涂料的甲醛降解能力和抗菌性能都有所增强。  相似文献   

挣扎中的沉沦--对《喧哗与骚动》中凯蒂悲剧的深层次分析     

赵南 《哈尔滨学院学报》2003,24(2):67-69

通过对美国作家福克纳的小说《喧嚣与骚动》中各个人物的个性,以及对当时美国南方社会的大时代背景的综合描述,对该书中女主人公——凯蒂的悲剧所产生的根源进行了较深层次的分析。  相似文献