...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Materials Science and Chemical Engineering >Oldoinyo Lengai Volcanic Ash for Removal of Hydrogen Sulfide and Ammonia from Biogas
【24h】

Oldoinyo Lengai Volcanic Ash for Removal of Hydrogen Sulfide and Ammonia from Biogas

机译：Oldoinyo Lengai火山灰用于去除沼气中的硫化氢和氨气

获取原文
   

获取外文期刊封面封底 >>

       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Oldoinyo Lengai mountain located in Northern Tanzania is the only active natrocarbonatite volcano with unusually alkali-rich natrocarbonatites which are not found elsewhere in the world. Volcanic ash formed earlier during eruptions was collected from different sites along the mountain, and its potency to adsorb hydrogen sulfide (H2S) and ammonia (NH3) from biogas was investigated. The samples were calcinated at different temperatures (550 style="white-space:normal;">℃ - 850 style="white-space:normal;">℃) and were characterized by X-ray florescent, scanning electron microscopy and X-ray diffraction techniques. The on-site adsorption experiments were conducted at the biogas digester at ambient conditions. The calcinated ash was packed into the reactor bed, biogas allowed to pass through the adsorbent, and the inlet and outlet concentrations of H style="white-space:nowrap;">2S and NH style="white-space:nowrap;">3 were measured. The height of the site where the adsorbent was taken from, calcination temperature, biogas flowrate and mass of the adsorbent were variable parameters and found to influence greatly on the efficiency of H style="white-space:nowrap;">2S and NH style="white-space:nowrap;">3 removal. The efficiency is increased with calcination temperature raise and mass of adsorbent and decreased with flowrate increase. The samples collected from the top site of the mountain and calcinated at 850℃ exhibited the best sorption performance.
机译：位于坦桑尼亚北部的Oldoinyo Lengai山是唯一活跃的含钠碳酸盐异常稀有的碳酸钠盐火山，这在世界其他地方都找不到。从山上的不同地点收集火山喷发期间形成的火山灰，其吸附沼气中的硫化氢（H 2 S）和氨（NH 3 ）的能力为调查。样品在不同温度（550 style =“ white-space：normal;”>℃-850 style =“ white-space：normal;”>℃）下煅烧，并且通过X射线荧光灯，扫描电子显微镜和X射线衍射技术进行表征。现场吸附实验是在环境条件下在沼气池中进行的。将煅烧后的灰分填充到反应器床中，使沼气通过吸附剂，H style =“ white-space：nowrap;”> 2 S和NH style =“ white-space：nowrap;”> 3 。取自吸附剂的位点的高度，煅烧温度，沼气流量和吸附剂的质量是可变参数，并发现它们对H的效率有很大影响。 2 S和NH style =“ white-space：nowrap;”> 3 移除。效率随着煅烧温度的升高和吸附剂质量的增加而增加，而随着流速的增加而降低。从山顶采集的样品在850℃煅烧时表现出最佳的吸附性能。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号