Preprint Article Version 1 This version is not peer-reviewed

Liquid-Phase Respiration Activity Assays to Assess Organic Waste Stability: A Comparison of Two Tests

Version 1 : Received: 6 April 2018 / Approved: 6 April 2018 / Online: 6 April 2018 (18:38:51 CEST)

A peer-reviewed article of this Preprint also exists.

Evangelou, A.; Komilis, D. Liquid-Phase Respiration Activity Assays to Assess Organic Waste Stability: A Comparison of Two Tests. Sustainability 2018, 10, 1441. Evangelou, A.; Komilis, D. Liquid-Phase Respiration Activity Assays to Assess Organic Waste Stability: A Comparison of Two Tests. Sustainability 2018, 10, 1441.

Journal reference: Sustainability 2018, 10, 1441
DOI: 10.3390/su10051441

Abstract

The stability of twenty seven composts and organic substrates (including raw, less stable and stable materials) was assessed using two different liquid phase tests were carried out. One of the tests was introduced in 1998 and was based on the calculation of a Specific Oxygen Uptake Rate (SOUR). The newly introduced liquid phase test presented here is simpler to set-up and to perform that the older liquid phase test. It is based on the quantification of oxygen consumption in the headspace of a BOD bottle that contains the liquid-solid solution. The results indicate that a marginal correlation does exist between the main indices calculated from both tests. The correlation was stronger for the indices calculated for stable-processed organics than for the raw (unprocessed materials). The SOUR ranged from 1520 to 3650mg O2/kg VS-h for the raw materials and from 110 to 1150 mg O2/kg VS-h for the processed materials, respectively. The corresponding stability rate related index (LSRI24) of the new liquid phase test introduced here ranged from 240 to 1180 mg O2/dry kg-h for the raw materials and from 64 to 792 mg O2/dry kg-h for the processed ones.

Subject Areas

manometric tests; liquid phase test; SOUR; stability; organic substrates; respiration activity; respirometry

Readers' Comments and Ratings (0)

Leave a public comment
Send a private comment to the author(s)
Rate this article
Views 0
Downloads 0
Comments 0
Metrics 0
Leave a public comment

×
Alerts
Notify me about updates to this article or when a peer-reviewed version is published.