Changes in Concentrations of Malodorous Compounds During Controlled Aeration Composting

Autor:	D.L. Elwell, D.V. Blaho, J.K. Fahrni, L.B. Willett, Harold M. Keener, D.C. Borger
Rok vydání:	2004
Předmět:	Ecology Chemistry Airflow Soil Science Manure Volatile fatty acids Animal science End of day Volume (thermodynamics) visual_art Environmental chemistry visual_art.visual_art_medium Sawdust Aeration O2 consumption Waste Management and Disposal
Zdroj:	Compost Science & Utilization. 12:102-107
ISSN:	2326-2397 1065-657X
DOI:	10.1080/1065657x.2004.10702167
Popis:	Effects of composting on odorous chemicals in dairy manure were investigated in replicated pilot-scale studies. Three 16-day composting trials were conducted, using 205 L vessels containing 83 kg mass. Fresh or 12-day-aged manure, from lactating cows, was mixed with sawdust (3man:1saw w/w). Vessels were either aerated continuously with high (2.3 kg/hr)/low (0.8 kg/hr) air flow controlled by thermostats or intermittently on a 5 min high air flow/55 min off clock controlled cycle. Six vessel replicates were conducted on each manure/air flow treatment combination. Temperatures, air flow, O2 consumption, and CO2 production were recorded every 10 minutes. Trapped NH3 emissions were determined daily. Exhaust air was passed through water-cooled condensers to analyze emitted volatiles, and condensate volume, pH, and volatile fatty acids (VFAs) were quantified at 12 or 24 hour intervals. Solids were collected from each vessel initially, at remix at the end of day 7, and at the end of each trial (day 16) for analys...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b953a76e46c5cdcd570468b02d9cb46b https://doi.org/10.1080/1065657x.2004.10702167 Zobrazit plný text záznamu Plný text ve formátu PDF