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  • Ge, Yaxin,1992Gothenburg University,Göteborgs universitet,Institutionen för kemi och molekylärbiologi,Department of Chemistry and Molecular Biology (author)

Emission Characteristics of NOx and SO2 during the Combustion of Antibiotic Mycelial Residue

  • Article/chapterEnglish2022

Publisher, publication year, extent ...

  • 2022-01-29
  • MDPI AG,2022

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  • LIBRIS-ID:oai:gup.ub.gu.se/313648
  • https://gup.ub.gu.se/publication/313648URI
  • https://doi.org/10.3390/ijerph19031581DOI
  • https://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-44250URI

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  • Language:English

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  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

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  • The antibiotic mycelial residue (AMR) generated from cephalosporin C production is a haz-ardous organic waste, which is usually disposed of by landfilling that causes potential secondary environmental pollution. AMR combustion can be an effective method to treat AMR. In order to develop clean combustion technologies for safe disposal and energy recovery from various AMRs, the emission characteristics of NOx and SO2 from AMR combustion were studied experimentally in this work. It was found that the fuel-N is constituted by 85% protein nitrogen and 15% inorganic nitrogen, and the fuel-S by 78% inorganic sulfur and 22% organic sulfur. Nitrogen oxide emissions mainly occur at the volatile combustion stage when the temperature rises to 400◦C, while the primary sulfur oxide emission appears at the char combustion stage above 400◦C. Increasing the combustion temperature and airflow cause higher NOx emissions. High moisture content in AMR can significantly reduce the NOx emission by lowering the combustion temperature and generating more reducing gases such as CO. For the SO2 emission, the combustion temperature (700 to 900◦C), airflow and AMR water content do not seem to exhibit obvious effects. The presence of CaO significantly inhibits SO2 emission, especially for the SO2 produced during the AMR char combustion because of the good control effect on the direct emission of inorganic SO2. Employing air/fuel staging technologies in combination with in-situ desulfurization by calcium oxide/salts added in the combustor with operation temperatures lower than 900◦C should be a potential technology for the clean disposal of AMRs. © 2022 by the authors. Licensee MDPI, Basel, Switzerland.

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  • Zhang, G. (author)
  • Zhang, J. (author)
  • Zhang, WennanMittuniversitetet,Institutionen för kemiteknik(Swepub:miun)wenzha (author)
  • Cui, L. (author)
  • Göteborgs universitetInstitutionen för kemi och molekylärbiologi (creator_code:org_t)

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  • In:International Journal of Environmental Research and Public Health: MDPI AG19:31661-78271660-4601

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By the author/editor
Ge, Yaxin, 1992
Zhang, G.
Zhang, J.
Zhang, Wennan
Cui, L.
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MEDICAL AND HEALTH SCIENCES
MEDICAL AND HEAL ...
and Health Sciences
ENGINEERING AND TECHNOLOGY
ENGINEERING AND ...
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University of Gothenburg
Mid Sweden University

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