Static respiration indices to investigate compost stability: effect of sample weight and temperature and comparison with dynamic respiration indices.

Abstract:

:Goal of this work was to study the effect of sample weight and temperature on the microbial respiration indices of a static microbial respiration test used to quantify compost stability. The static respiration tests (SRT) were performed at two different temperatures (20°C and 35°C) using five different sample weights (19, 38, 56, 75 and 94 dry g). Results showed that at 35°C, as sample weight increased, the magnitude of the respiration indices reduced. In addition, the 35°C temperature resulted in higher static respiration activity indices compared to that at the 20°C for two sample weights. The static respiration tests led to 2-2.5 times lower oxygen-related indices compared to those calculated in dynamic respiration tests (DRT); the 7-day CO(2) cumulative generations were, however, almost similar for both types of tests. Respiratory quotients (RQs) were constantly between 0.8 to 1.2 during the SRT.

journal_name

Bioresour Technol

journal_title

Bioresource technology

authors

Komilis D,Kletsas C

doi

10.1016/j.biortech.2012.06.087

subject

Has Abstract

pub_date

2012-10-01 00:00:00

pages

467-70

eissn

0960-8524

issn

1873-2976

pii

S0960-8524(12)01001-2

journal_volume

121

pub_type

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