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

Georgia Nayane Silva Belo Gois | Zendy; Williane Vieira Macêdo | Zendy; Fernanda Santana Peiter | Zendy; Taciana Carneiro Chaves | Zendy; Vinícius Sales | Zendy; Pablo André Moreira de Almeida Barbosa | Zendy; Ana Karla de Souza Abud | Zendy; Eduardo Lucena Cavalcante de Amorim | Zendy

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

Author(s) -

Georgia Nayane Silva Belo Gois,

Williane Vieira Macêdo,

Fernanda Santana Peiter,

Taciana Carneiro Chaves,

Vinícius Sales,

Pablo André Moreira de Almeida Barbosa,

Ana Karla de Souza Abud,

Eduardo Lucena Cavalcante de Amorim

Publication year - 2020

Publication title -

latin american applied research - an international journal

Language(s) - English

Resource type - Journals

eISSN - 1851-8796

pISSN - 0327-0793

DOI - 10.52292/j.laar.2021.504

Subject(s) - biohydrogen , vinasse , hydraulic retention time , pulp and paper industry , chemistry , biogas , bioreactor , anaerobic exercise , anaerobic digestion , fluidized bed , hydrogen production , waste management , hydrogen , wastewater , methane , fermentation , food science , environmental science , environmental engineering , biology , physiology , organic chemistry , engineering

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.

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