Reduction of ammonia and volatile organic compounds from food waste-composting facilities using a novel anti-clogging biofilter system

Hee Wook Ryu, Kyung Suk Cho, Tae Ho Lee

Research output: Contribution to journalArticlepeer-review

40 Scopus citations

Abstract

The performance of a pilot-scale anti-clogging biofilter system (ABS) was evaluated over a period of 125days for treating ammonia and volatile organic compounds emitted from a full-scale food waste-composting facility. The pilot-scale ABS was designed to intermittently and automatically remove excess biomass using an agitator. When the pressure drop in the polyurethane filter bed was increased to a set point (50mm H2O m-1), due to excess biomass acclimation, the agitator automatically worked by the differential pressure switch, without biofilter shutdown. A high removal efficiency (97-99%) was stably maintained for the 125days after an acclimation period of 1week, even thought the inlet gas concentrations fluctuated from 0.16 to 0.55gm-3. Due the intermittent automatic agitation of the filter bed, the biomass concentration and pressure drop in the biofilter were maintained within the ranges of 1.1-2.0g-DCW gPU-1 and below 50mm H2O m-1, respectively.

Original languageEnglish
Pages (from-to)4654-4660
Number of pages7
JournalBioresource Technology
Volume102
Issue number7
DOIs
StatePublished - Apr 2011

Bibliographical note

Funding Information:
This research was supported by the Basic Science Research Program, through the National Research Foundation of Korea (NRF), funded by the Ministry of Education, Science and Technology (MEST) (NRL program, R0A-2008-000-20044-0 ), and by the MKE (The Ministry of Knowledge Economy), Korea , under the “program for CITG” support program supervised by the NIPA (National IT Industry Promotion Agency) ” ( NIPA-2010- C6150-1001-0004 ).

Keywords

  • Agitation
  • Ammonia
  • Anti-Clogging
  • Biofilter
  • Volatile organic compounds

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