Biodegradation behavior of natural organic matter (NOM) in a biological aerated filter (BAF) as a pretreatment for ultrafiltration (UF) of river water

Guocheng Huang, Fangang Meng, Xing Zheng, Yuan Wang, Zhigang Wang, Huijun Liu, Martin R. Jekel

Research output: Contribution to journalArticlepeer-review

49 Scopus citations

Abstract

In this study, biodegradation of natural organic matter (NOM) in a biological aerated filter (BAF) as pretreatment of UF treating river water was investigated. Photometric measurement, three-dimensional excitation-emission matrix (EEM) fluorescence spectroscopy and liquid chromatography with online organic carbon detector (LC-OCD) were used to investigate the fate of NOM fractions in the BAF+UF process. Results showed that the BAF process could effectively remove particles and parts of dissolved organic matter, which led to a lower NOM loading in the UF system, but different NOM fractions showed different biodegradation potentials. Further biodegradation batch experiments confirmed this observation and identified that polysaccharides and proteins (quantified using photometric methods) contained a large proportion of readily biodegradable matter while humic substances were mainly composed of inert organic substances. According to EEM measurements, it is evident that protein-like substances were more readily eliminated by microorganisms than humic-like substances. LC-OCD data also supported the phenomena that the polysaccharides and large-size proteins were more degradable than humic substances. © 2011 Springer-Verlag.
Original languageEnglish (US)
Pages (from-to)1795-1803
Number of pages9
JournalApplied Microbiology and Biotechnology
Volume90
Issue number5
DOIs
StatePublished - Apr 15 2011

ASJC Scopus subject areas

  • Applied Microbiology and Biotechnology
  • Biotechnology

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