EVALUATION OF BIOHYDROGEN PRODUCTION FROM SUGARCANE VINASSE IN AN ANAEROBIC FLUIDIZED BED REACTOR WITHOUT PH CONTROL

Autor:	Taciana Carneiro Chaves, Georgia Nayane Silva Belo Gois, Fernanda Santana Peiter, Eduardo Lucena Cavalcante de Amorim, Ana Karla de Souza Abud, Williane Macêdo, Pablo André Moreira de Almeida Barbosa, Vinícius Sales
Rok vydání:	2020
Předmět:	Hydrogen Mechanical Engineering General Chemical Engineering Vinasse chemistry.chemical_element General Chemistry Pulp and paper industry Butyric acid chemistry.chemical_compound Anaerobic digestion chemistry Biogas Fluidized bed Biohydrogen Anaerobic exercise
Zdroj:	Latin American Applied Research - An international journal. 51:63-69
ISSN:	1851-8796 0327-0793
DOI:	10.52292/j.laar.2021.504
Popis:	This study aimed to produce biohydrogen from sugarcane vinasse in an anaerobic fluidized bed reactor operated at ambient temperature (26-35 °C) with a progressive increase of the organic load rate (OLR) (17-155 kg-COD m-3 d-1) and without influent pH control. Hydraulic retention times (HRT) of 12, 6 and 4 h were applied to increase the OLR. The highest hydrogen yield, hydrogen production rate and percentage of hydrogen in the biogas were obtained in the HRT of 4 h, corresponding to the values of 2.40 mol-H2 mol-1-carbohydrate, 0.33 L-H2 h-1 L-1-reactor, and 33%, respectively. The butyric acid fermentative route was favored in the process. The PCR/DGGE analysis showed that the microbial community structure was modified along operational stages and increasing OLR caused an increase in microbial diversity. The results indicate that biohydrogen production from anaerobic digestion of sugarcane vinasse can be achieved with no alkalization pretreatment.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e4893062818dc6f5957f372cb7300c49 https://doi.org/10.52292/j.laar.2021.504 Zobrazit plný text záznamu