PMID- 19583152
OWN - NLM
STAT- MEDLINE
DCOM- 20090728
LR  - 20190911
IS  - 1096-2247 (Print)
IS  - 1096-2247 (Linking)
VI  - 59
IP  - 5
DP  - 2009 May
TI  - Evaluation of wood chip-based biofilters to reduce odor, hydrogen sulfide, and 
      ammonia from swine barn ventilation air.
PG  - 520-30
AB  - A pilot-scale biofilter was developed in which two types of wood chips (western 
      cedar [WC] and 2-in. hardwood [HW]) were examined to treat odor emissions from a 
      deep-pit swine finishing facility in central Iowa. The biofilters were operated 
      continuously for 13 weeks at different airflow rates resulting in variable empty 
      bed residence times (EBRTs) from 1.6 to 7.3 sec. The effects of three media 
      moisture levels were also evaluated. A dynamic forced-choice olfactometer was 
      used to evaluate odor concentrations from both the control (inlet) plenum and 
      biofilter treatments (outlet). Hydrogen sulfide (H2S) and ammonia (NH3) 
      concentrations were also measured from these olfactometry samples. Solid-phase 
      microextraction (SPME) polydimethylsiloxane (PDMS)/divinylbenzene (DVB) 65-microm 
      fibers were used to extract volatile organic compounds from both the control 
      plenum and biofilter treatments. Analyses of separated odors were carried out 
      using a gas chromatography-mass spectrometry-olfactometry (GC-MS-O) system. 
      Static sample results indicated that both types of chips achieved significant 
      reductions in odor (average 70.1 and 82.3% for HW and WC, respectively), H2S 
      (average 81.8 and 88.6% for HW and WC, respectively) and NH3 (average 43.4 and 
      74% for HW and WC, respectively) concentrations. GC-MS-O aromagram results showed 
      both treatments reached high odor reduction efficiency (average 99.4 and 99.8% 
      for HW and WC, respectively). The results also showed that maintaining proper 
      moisture content and a minimum EBRT are critical to the success of wood 
      chip-based biofilters.
FAU - Chen, Lide
AU  - Chen L
AD  - Department of Agricultural and Biosystems Engineering, Iowa State University, 
      Ames, IA 50011, USA.
FAU - Hoff, Steven
AU  - Hoff S
FAU - Cai, Lingshuang
AU  - Cai L
FAU - Koziel, Jacek
AU  - Koziel J
FAU - Zelle, Brian
AU  - Zelle B
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PT  - Research Support, U.S. Gov't, Non-P.H.S.
PL  - United States
TA  - J Air Waste Manag Assoc
JT  - Journal of the Air & Waste Management Association (1995)
JID - 9503111
RN  - 7664-41-7 (Ammonia)
RN  - YY9FVM7NSN (Hydrogen Sulfide)
SB  - IM
MH  - Air Movements
MH  - *Ammonia
MH  - Animals
MH  - Filtration/*instrumentation
MH  - *Housing, Animal
MH  - *Hydrogen Sulfide
MH  - *Odorants
MH  - Swine
MH  - Ventilation/*methods
MH  - *Wood
EDAT- 2009/07/09 09:00
MHDA- 2009/07/29 09:00
CRDT- 2009/07/09 09:00
PHST- 2009/07/09 09:00 [entrez]
PHST- 2009/07/09 09:00 [pubmed]
PHST- 2009/07/29 09:00 [medline]
AID - 10.3155/1047-3289.59.5.520 [doi]
PST - ppublish
SO  - J Air Waste Manag Assoc. 2009 May;59(5):520-30. doi: 10.3155/1047-3289.59.5.520.