Removal of odorous compounds emitted from a food-waste composting facility in Korea using a pilot-scale scrubber.
J Environ Sci Health A Tox Hazard Subst Environ Eng
; 53(12): 1094-1101, 2018.
Article
en En
| MEDLINE
| ID: mdl-29842847
Monitoring and control of odorous compound emissions have been enforced by the Korean government since 2005. One of the point sources for these emissions was from food waste composting facilities. In this study, a pilot-scale scrubber installed in a composting facility was evaluated for its performance in the removal of malodorous compounds. The exhaust stream contained ammonia and methylamine as the major odorants detected by the threshold odor test and various instrumental techniques (GC-FID, FPD, MS and HPLC/UV). For the scrubber operation, the column was randomly packed with polypropylene Hi-Rex 200, while aqueous sulfuric acid was selected as the scrubbing solution. To achieve 95% removal, the scrubber must be operated by using H2SO4 solution with pH at < 6.5, liquid to gas ratio > 4.5, gas loading rate < 1750 m3/m3-hr and contact time < 0.94 s. The scrubber performance was further evaluated by determining the mass transfer coefficients and then monitoring for 355 days of operation. The pilot-scale scrubber maintained > 95% ammonia and methylamine removal efficiencies despite the fluctuations in the inlet (from composting facility exhaust stream) concentration. The optimum operating conditions and scrubber performance indicators determined in this study provides a basis for the design of a plant-scale scrubber for treatment of composting facility gas emissions.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Compostaje
/
Eliminación de Residuos
/
Compuestos Orgánicos Volátiles
/
Instalaciones de Eliminación de Residuos
/
Alimentos
/
Odorantes
Tipo de estudio:
Evaluation_studies
Límite:
Humans
País/Región como asunto:
Asia
Idioma:
En
Revista:
J Environ Sci Health A Tox Hazard Subst Environ Eng
Asunto de la revista:
TOXICOLOGIA
Año:
2018
Tipo del documento:
Article
País de afiliación:
Corea del Sur
Pais de publicación:
Reino Unido