Web of Science: 12 citations, Scopus: 14 citations, Google Scholar: citations
GHG emissions during the high-rate production of compost using standard and advanced aeration strategies
Puyuelo Sánchez, Belén (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química)
Gea Leiva, Teresa (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química)
Sánchez Ferrer, Antoni (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química)

Date: 2014
Abstract: In this study, we have evaluated different strategies for the optimization of the aeration during the active thermophilic stage of the composting process of source-selected Organic Fraction of Municipal Solid Waste (or biowaste) using reactors at bench scale (50 L). These strategies include: typical cyclic aeration, oxygen feedback controller and a new self-developed controller based on the on-line maximization of the oxygen uptake rate (OUR) during the process. Results highlight differences found in the emission of most representative greenhouse gases (GHG) emitted from composting (methane and nitrous oxide) as well as in gases typically related to composting odor problems (ammonia as typical example). Specifically, the cyclic controller presents emissions that can double that of OUR controller, whereas oxygen feedback controller shows a better performance with respect to the cyclic controller. A new parameter, the respiration index efficiency, is presented to quantitatively evaluate the GHG emissions and, in consequence, the main negative environmental impact of the composting process. Other aspects such as the stability of the compost produced and the consumption of resources are also evaluated for each controller.
Note: Número d'acord de subvenció MINECO/CTM 2012-33663
Rights: Tots els drets reservats
Language: Anglès.
Document: article ; recerca ; submittedVersion
Subject: Composting ; Aeration control ; Oxygen uptake rate ; Greenhouse gases emissions ; Respiration efficiency
Published in: Chemosphere, Vol. 109 (Aug. 2014) , p. 64-70, ISSN 0045-6535

DOI: 10.1016/j.chemosphere.2014.02.060


Preprint
31 p, 535.1 KB

The record appears in these collections:
Research literature > UAB research groups literature > Research Centres and Groups (scientific output) > Engineering > Composting Research Group (GICOM)
Articles > Research articles
Articles > Published articles

 Record created 2018-10-02, last modified 2019-02-02



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