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Degradation of ammonia from gas stream by advanced oxidation processes

机译：通过高级氧化工艺从气流中降解氨

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摘要

The reduction of ammonia emissions from air was experimentally investigated by advanced oxidation processes (AOPs) utilizing the combination of ultraviolet irradiation with ozone. The influence of operating conditions such as initial ammonia concentration and flow rate of gas on the reduction of ammonia concentration was investigated in homemade photochemical unit. The conversion of ammonia decreased with increasing initial concentration of ammonia and with increasing flow rate of air (decreasing retention time). The highest conversion of ammonia (97%) was achieved under lower initial concentration of ammonia (30 ppm) and lower flow rate of air (28 m(3)/h). The energy per order was evaluated for the advanced oxidation process too. The energy consumption was about 0.037 kWh/m(3)/order for the 97% ammonia conversion at 30 ppm of initial ammonia concentration and 28 m(3)/h flow rate of air. Based on the results, the advanced oxidation process combining the UV irradiation and ozone was effective for mitigation of ammonia concentration and presents a promising technology for the reduction of odor emissions from livestock buildings. Moreover, the AOPs are suitable for application for high flow rate of air, especially for ammonia abatement from livestock buildings, where very high efficiency is expected.
机译：通过先进的氧化工艺（AOP），结合紫外线照射和臭氧，通过实验研究了减少空气中氨气的排放量。在自制的光化学装置中研究了初始氨浓度和气体流速等操作条件对氨浓度降低的影响。氨的转化率随着氨的初始浓度的增加和空气流量的增加（保留时间的减少）而降低。在较低的氨初始浓度（30 ppm）和较低的空气流速（28 m（3）/ h）下，氨的转化率最高（97％）。还针对先进的氧化过程评估了每个订单的能量。在30 ppm的初始氨浓度和28 m（3）/ h的空气流量下，97％的氨转化率能耗约为0.037 kWh / m（3）/阶。根据结果​​，结合紫外线辐射和臭氧的先进氧化工艺可有效降低氨气浓度，并提出了减少畜牧建筑气味排放的有前途的技术。此外，AOP适用于高流速的空气，特别是用于畜牧建筑的氨气减排，因为这需要很高的效率。

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  • 来源
    《Journal of Environmental Science and Health》 |2020年第4期|433-437|共5页
  • 作者

  • 作者单位

    VSB Tech Univ Ostrava Inst Environm Technol Ostrava Czech Republic;

    VSB Tech Univ Ostrava Inst Environm Technol Ostrava Czech Republic|VSB Tech Univ Ostrava Fac Mat Sci & Technol Ostrava Czech Republic;

    Dekonta Inc Stehelceves Czech Republic;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Advanced oxidation processes; ammonia; flow reactor; UV irradiation; ozone;

    机译：先进的氧化工艺;氨;流动反应器紫外线照射臭氧;

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