Botanical air filtration

Jensen Zhang, Zhiqiang Wang, Dacheng Ren

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


A Dynamic botanical air filtration (DBAF) system was integrated into the HVAC system of a newly constructed office room to investigate the DBAF performance under realistic indoor pollutant concentration levels and realistic ventilation conditions. The DBAF system provide an equivalent clean air delivery rate (CADR) of 280 ft3/min for formaldehyde. The single pass efficiency (SPE) of the botanical filter for toluene is negatively influenced by the water content in the bed, but was still kept at 20% 300 days later. To better understand the DBAF system and optimize its performance, the microbes in the prototype system and their activities for formaldehyde removal were characterized. A strain of Arthrobacter aurescens TC1 is found to remove 86% of formaldehyde with a starting concentration of 11.8 ppm.

Original languageEnglish (US)
Pages (from-to)138-140
Number of pages3
JournalASHRAE Journal
Issue number12
StatePublished - Dec 2010

ASJC Scopus subject areas

  • Building and Construction
  • Mechanical Engineering


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