Data/hora: 23/09/2024 05:00:12

Biblioteca(s): 	Embrapa Solos.	
Data corrente: 	01/06/2021	
Data da última atualização: 	02/06/2021	
Autoria: 	BAIENSE, K. M. S. M.; LINHARES, F. G.; INACIO, C. de T.; STHEL, M. S.; VARGAS, H.; SILVA, M. G. da.	
Afiliação: 	KARIZA MAYRA SILVA MININI BAIENSE, UENF; FERNANDA GOMES LINHARES, UENF; CAIO DE TEVES INACIO, CNPS; MARCELO SILVA STHEL, UENF; HELION VARGAS, UENF; MARCELO GOMES DA SILVA, UENF.	
Título: 	Photoacoustic-based sensor for real-time monitoring of methane and nitrous oxide in composting.	
Ano de publicação: 	2021	
Fonte/Imprenta: 	Sensors and Actuators B: chemical, v. 341, 129974, Aug. 2021.	
DOI: 	https://doi.org/10.1016/j.snb.2021.129974	
Idioma: 	Inglês	
Conteúdo: 	The emission of greenhouse gases from disturbed biological systems has caused damage to the environment. Thus, sensitive, efficient and accurate techniques have been required to monitor these gases. In this article, the gas dynamics in the composting of an agricultural waste (horse manure and lettuce lefts) was studied. The progress of composting was accompanied by monitoring O2 and CO2 gases and temperature. The results showed that in the thermophilic phase the composting was predominantly aerobic. Photoacoustic spectroscopy was used throughout the process to monitor the dynamics of the greenhouse gases N2O and CH4. The technique was effective in identifying both gases, and when combined with the convolution approach using the absorption lines from the molecular spectroscopic database (HITRAN), it also allowed the quantification of them.	
Palavras-Chave: 	Espectroscopia Fotoacústica; Gases de Efeito Estufa.	
Thesagro: 	Compostagem; Meio Ambiente.	
Thesaurus Nal: 	Composting; Environment; Greenhouse gases; Photoacoustic spectroscopy.	
Categoria do assunto: 	P Recursos Naturais, Ciências Ambientais e da Terra	
Registro original: 	Embrapa Solos (CNPS)	
Exemplares: 	CNPS - (20669-1) - UPC - AP - DD -  -  -  - DIS