Evolution of organic matter from sewage sludge and garden trimming during composting.
To use compost appropriately in agriculture it is extremely important to estimate the stabilization level of the organic matter. In this work, two different piles of compost were studied by means of (i) humification parameters (degree of humification--DH, humification rate--HR, humification index--HI) prior to and after enzymatic hydrolysis of the extracted organic carbon, (ii) water-soluble organic carbon (WSOC) and (iii) water-soluble nitrogen. A significant relationship between composting time, WSOC and humification parameters after enzymatic hydrolysis (DHenz; HRenz; HIenz) was found.
Department of Agro-Environmental Sciences and Technologies, University of Bologna, Viale Fanin no. 40, 40127 Bologna, Italy. marco.grigatti@tin.it
Marco
M
Grigatti
Claudio
C
Ciavatta
Carlo
C
Gessa
D000383:Agriculture / Q000379:methods*; D002244:Carbon / Q000378:metabolism; D006868:Hydrolysis; D008049:Lipase; D009113:Muramidase; D009584:Nitrogen / Q000378:metabolism; D018514:Plant Structures / Q000737:chemistry / Q000378:metabolism*; D011402:Pronase; D012722:Sewage / Q000737:chemistry*; D012987:Soil / Q000032:analysis*; D012988:Soil Microbiology
D012722:Sewage; D012987:Soil; D002244:Carbon; D008049:Lipase; D009113:Muramidase; D011402:Pronase; D009584:Nitrogen