A study on Air Filled Porosity evolution in sludge composting. (1st January 2012)

• Record Type: Journal Article
• Authors: Ruggieri, Luz; Gea, Teresa; Artola, Adriana; Sánchez, Antoni
• Is Part Of: International journal of environment and waste management. Volume 9:Number 1/2(2012)
• Page Start: 56
• Page End: 68
• Publication Date: 2012-01-01
• Subjects: APF -- air filled porosity -- air pycnometry -- ADS -- anaerobically digested sludge -- composting -- cumulative oxygen consumption -- FAS -- free air space -- OUR -- oxygen uptake rate -- porosity -- RS -- raw sludge; Refuse and refuse disposal -- Environmental aspects -- Periodicals; Refuse collection -- Environmental aspects -- Periodicals; Recycling (Waste, etc.) -- Periodicals; 363.72805
• Languages: English
• ISSNs: 1478-9876

Abstract

Air Filled Porosity (AFP) is a key parameter in the composting process, conditioning oxygen availability and heat accumulation. Air pycnometry is considered the most adequate methodology for AFP determination. This technique requires withdrawing a sample of material from the composting mass for AFP measurement, which may alter its physical characteristics. A novel strategy that permits to measure AFP in situ during the composting process is presented in this study. Raw and Anaerobically Digested Sludges (ADS) have been used as substrates. A common trend in AFP evolution during the composting process has been observed in most of the cases.