Latest In-vessel composting Stories

2008-07-24 03:00:37

By Wichuk, Kristine M McCartney, Daryl Pathogen inactivation is expected to occur in compost if temperatures over 55[degrees]C (131[degrees]F) are maintained for at least 3 days, or 15 days in windrows. However, a literature review revealed pathogen survival in a significant number of processes appearing to meet the prescribed time-temperature criteria. It was hypothesized that pathogen survival may be due to the existence of undetected temperature variations within the compost mass. In...

2008-07-24 03:00:37

By Bueno, P Yanez, R; Ariza, J; Diaz, M J The kinetic of the thermophilic composting process of trimming residues was studied under several parameters [moisture (40-70%), aeration (0.2-0.61 air/kg min) and particle size (1-5 cm)] in order to determine the best composting conditions to ensure an optimum composting design. Under those conditions, suitable temperature evolutions have been found for all the reactors. The kinetic model proposed by Whang and Meenaghan was used and two first-order...

2007-01-07 03:00:18

By Spencer, Robert L Annual meeting of in-vessel composting facility operators included representatives from seven MSW composting plants that utilize the rotary digester technology. Lessons learned regarding equipment wear, inspections and critical maintenance are summarized. MANY compost facility design engineers believe a rotary digester that processes municipal solid waste, source separated or mixed, followed by a trommel screen, offers an advantage over other technologies in...

Word of the Day
  • A gigantic fictional humanoid alien god being described with a head resembling an octopus and dragon wings and claws, around whom an insane cult developed.
  • Pertaining to the mythos of Cthulhu and additional otherworldly beings created by H. P. Lovecraft or inspired by his writings and imitators.
This word was invented in 1926 by H.P. Lovecraft for his short story, 'The Call of Cthulhu.' 'Cthulhu' may be based on the word 'chthonic,' which in Greek mythology refers to the underworld.