An experiment was performed for evaluating the most suitable biochemical parameters to measure dynamics of substrate transformation during composting of the organic fraction derived from pre-selected urban wastes and wood bark mixture. Changes of chemical (organic C, hydrosoluble sugars, total and mineral N, humified fraction, volatile acids and phenolic compounds) and biochemical (microbial respiration, biomass C, qCO(2), dehydrogenase, catalase, urease activities, FDA, and BIF) parameters were monitored for 1 0 days. Limited changes in organic C, total nitrogen, and humification characteristics were observed during composting. Dehydrogenase and catalase activities, BIF and FDA showed small changes during composting. Urease activity and, with some limitations regarding the early stages of composting, microbial respiration and qCO(2), were found to be the most suitable parameters to measure dynamics of substrate transformation during composting of preselected urban wastes.
Evolution of biochemical parameters during composting of urban wastes
SAVIOZZI, ALESSANDRO;CARDELLI, ROBERTO;
2004-01-01
Abstract
An experiment was performed for evaluating the most suitable biochemical parameters to measure dynamics of substrate transformation during composting of the organic fraction derived from pre-selected urban wastes and wood bark mixture. Changes of chemical (organic C, hydrosoluble sugars, total and mineral N, humified fraction, volatile acids and phenolic compounds) and biochemical (microbial respiration, biomass C, qCO(2), dehydrogenase, catalase, urease activities, FDA, and BIF) parameters were monitored for 1 0 days. Limited changes in organic C, total nitrogen, and humification characteristics were observed during composting. Dehydrogenase and catalase activities, BIF and FDA showed small changes during composting. Urease activity and, with some limitations regarding the early stages of composting, microbial respiration and qCO(2), were found to be the most suitable parameters to measure dynamics of substrate transformation during composting of preselected urban wastes.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
