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绿沸石基复合材料对河道水中氨氮去除效果研究 被引量:4
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作者 黄添浩 王趁义 +3 位作者 王国贺 王凤玲 方雨博 汤唯唯 《矿物学报》 CAS CSCD 北大核心 2019年第5期585-593,共9页
以绿沸石、硅藻土、膨润土、牡蛎壳为主要原材料,包衣机制粒后马弗炉焙烧制成绿沸石-硅藻土(GZD)、绿沸石-膨润土(GZB)、绿沸石-牡蛎壳(GZO)等3款球状氨氮吸附材料。探究造孔剂-粘结剂配比、物料配比、焙烧温度、焙烧时间对污水中氨氮... 以绿沸石、硅藻土、膨润土、牡蛎壳为主要原材料,包衣机制粒后马弗炉焙烧制成绿沸石-硅藻土(GZD)、绿沸石-膨润土(GZB)、绿沸石-牡蛎壳(GZO)等3款球状氨氮吸附材料。探究造孔剂-粘结剂配比、物料配比、焙烧温度、焙烧时间对污水中氨氮的吸附量和材料散失率的影响,通过吸附动力学、吸附等温线、氨氮去除率、材料散失率试验探讨其吸附机理。并设计了简易装置,用实际河道水样对比分析了3款复合材料与块状绿沸石原矿对氨氮的吸附效果和重复利用次数,对处理效果最佳的GZD中的主要材料绿沸石和硅藻土进行了SEM和XRF表征。结果表明:GZD的氨氮吸附效果最佳,制备条件为造孔剂、粘结剂、绿沸石、硅藻土的质量比为1.2﹕5﹕9﹕1;在500℃下焙烧3 h;GZD对氨氮的吸附符合准二级动力学,用Freundlich等温线比Langmuir等温线更适合描述其吸附过程;GZD对实际河道水样进行5次吸附再生后仍具有明显效果。 展开更多
关键词 绿沸石基复合材料 简易装置 氨氮吸附 河道水
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Structure and Properties of Medical Hollow Palm Sheath Fibril 被引量:4
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作者 CHEN Chang-jie ZHANG You wang guo-he 《Journal of Donghua University(English Edition)》 EI CAS 2014年第5期617-620,共4页
The palm trunk fiber bundles were treated with glacial acetic acid solution and H2 02 to get the palm sheath fibril hardly with any lignin or hemi-cdlulose. The morphological, aggregation structure and moisture regain... The palm trunk fiber bundles were treated with glacial acetic acid solution and H2 02 to get the palm sheath fibril hardly with any lignin or hemi-cdlulose. The morphological, aggregation structure and moisture regain, water absorption; anti-bacterlal properties of palm sheath fibril were tested and analyzed. The results showed that the average length of palm sheath fibril was (643.6 ± 192.4 ) pro, while average diameter was ( 10.3 ± 1.9 ) pma. A lumen existed in the cross section of each natural fibril, and the average hollowness of fibril reached (47.1 ± 11.1 ) %. Fibril was mainly constituted by cellulose I which gibed palm fibril a good hygroscopieity and the degree of crystalfization was 62.3 %. The moisture regain of palm sheath fibril was about 12.1% while water absorption was 10. 68 g/g suitable for medical packing. Fibril antibacterial against staphylococcus aurous was 84.3 %, and against escherichia coli was 73.3 %. Palm sheath fibril can be used as a natural fiber material for nonwoven medical use. 展开更多
关键词 PALM SHEATH FIBRIL HOLLOWNESS MEDICAL antibacterialwater absorption
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基于激光雷达SLAM的核电站高放过滤器滤芯转运机器人研究
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作者 张红 赵阿朋 +2 位作者 罗刚 陈少南 王国河 《今日自动化》 2021年第1期43-45,共3页
核电站高放过滤器通常每个燃料循环更换一次,滤芯剂量高,转运路径复杂,路程远,人工转运面临高辐照风险,对高放过滤器滤芯的转运研究开发一种基于激光雷达SALM技术的滤芯转运机器人。
关键词 高放过滤器 滤芯转运 激光雷达 SLAM
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