Design, development and evaluation  of novel equipment for compost stability tests

Thanh Dam Nguyen; Canh Viet Nguyen; Thi Vi Phung; Manh Huy Nguyen; Thi Thao Ta; Hong Anh Duong; Jean-Luc Vasel; Pham Hung Viet

doi:10.15625/2525-2518/19223

Author affiliations

Authors

Nguyen Thanh Dam 1Key Laboratory of Analytical Technology for Environmental Quality and Food Safety Control (KLATEFOS), VNU University of Science, 334 Nguyen Trai, Thanh Xuan, Ha Noi, Viet Nam https://orcid.org/0000-0001-5077-5793
Nguyen Canh Viet Department of Physics, VNU University of Science, 334 Nguyen Trai, Thanh Xuan, Ha Noi, Viet Nam
Phung Thi Vi Key Laboratory of Analytical Technology for Environmental Quality and Food Safety Control (KLATEFOS), VNU University of Science, 334 Nguyen Trai, Thanh Xuan, Hanoi 100000, Viet Nam
Nguyen Manh Huy 1Key Laboratory of Analytical Technology for Environmental Quality and Food Safety Control (KLATEFOS), VNU University of Science, 334 Nguyen Trai, Thanh Xuan, Ha Noi, Viet Nam https://orcid.org/0000-0003-3391-8750
Ta Thi Thao Deparment of Chemistry, VNU University of Science, 334 Nguyen Trai, Thanh Xuan, Hanoi 100000, Viet Nam https://orcid.org/0000-0002-9401-1178
Duong Hong Anh Research Centre for Environmental Technology and Sustainable Development (CETASD), VNU University of Science, 334 Nguyen Trai, Thanh Xuan, Ha Noi, Viet Nam
Jean-Luc Vasel Ecoservice Company, 33 Rue de la Gare, Libramont-Chevigny 6800, Belgium
Pham Hung Viet 1Key Laboratory of Analytical Technology for Environmental Quality and Food Safety Control (KLATEFOS), VNU University of Science, 334 Nguyen Trai, Thanh Xuan, Ha Noi, Viet Nam

DOI:

https://doi.org/10.15625/2525-2518/19223

Keywords:

AT4, compost stability, organic fertiliser, oxygen consumption, respirometry

Abstract

Compost stability is a significant quality indicator that needs to be determined before using compost as an organic fertiliser. In this work, a novel device for assessing compost stability based on the oxygen consumption (OC) method was successfully developed. The design of this prototype was created to effectively solve inherent limitations observed in commercially available equipment functioning on the same concept (Oxitop devices). The performance of the device was evaluated in the laboratory to determine the OC of two different types of compost samples (food waste and green compost). The data indicated that the device worked stably and accurately during the test. Between the two types of samples, the compost based on food waste had higher AT4 and OCmax values but with lower K values. According to the EU regulations, both types of samples were considered stable.

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