LIMONENE QUANTIFICATION BY GAS CHROMATOGRAPHY WITH MASS SPECTROMETRY (GC-MS) AND ITS EFFECTS ON HYDROGEN AND VOLATILE FATTY ACIDS PRODUCTION IN ANAEROBIC REACTORS
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Data
2020-07-01
Autores
Camargo, Franciele Pereira
Sarti, Arnaldo [UNESP]
Alecio, Alberto Camilo [UNESP]
Sabatini, Carolina Aparecida
Tallarico Adorno, Maria Angela
Silveira Duarte, Iolanda Cristina
Amancio Varesche, Maria Bernadete
Título da Revista
ISSN da Revista
Título de Volume
Editor
Soc Brasileira Quimica
Resumo
The inhibition effect of limonene on the organisms involved in anaerobic reactors may affect obtaining H-2 in this process. Rapid and precise limonene quantification is desirable to characterize wastewaters. The objective of this research was to develop a Gas Chromatography Coupled to Mass Spectrometry (GC-MS) method to determine limonene concentration in liquid samples from batch reactors applied to H-2 production at 30 degrees C. Method validation was carried out through calibration curves (3 to 20 mg L-1 of limonene), in addition to evaluating its precision (CV = 0.1%). linearity (R-2 = 0.979), limits of detection (1.7 mg L-1) and quantification (4.2 mg L-1). Its inhibitory effect was evaluated with increasing concentrations of limonene (without addition to 2000 mg L-1). Limonene affected the starting time of H-2 production (lambda), since lambda was 8.7 h in control assays and 15 h with 2000 mg L-1 of limonene. The same was observed for obtaining H-2, since 19.5 mmol H2 L-1 was obtained in control assays and 8.7 mmol H2L-1 was obtained in assays with 2000 mg L-1 of limonene. This method was effective for limonene determination in liquid samples from batch reactors and could be used for characterization and control of anaerobic reactors.
Descrição
Palavras-chave
wastewater, sewage sludge, anaerobic digestion, hydrogen, volatile fatty acids, limonene
Como citar
Quimica Nova. Sao Paulo: Soc Brasileira Quimica, v. 43, n. 7, p. 844-850, 2020.