Hydrogen production by co-digesting cheese whey and glycerin in an AnSBBR: Temperature effect

Author(s)

Lovato, Giovanna ^[1] ; Albanez, Roberta ^[1] ; Stracieri, Lucas ^[1] ; Ruggero, Leticia Scudeler ^[1] ; Ratusznei, Suzana Maria ^[1] ; Domingues Rodrigues, Jose Alberto ^[1]

Affiliation

^[1] Maud Inst Technol EEM IMT, Maua Sch Engn, Praca Maua 1, BR-09580900 Sao Caetano do Sul, SP - Brazil

• Document type: Journal article
• Source: Biochemical Engineering Journal; v. 138, p. 81-90, OCT 15 2018.
• Web of Science Citations: 3

Abstract

Anaerobic processes are strongly influenced by temperature and there is considerable disagreement about the ideal or even an ideal range of temperature for biological hydrogen production. Hence, this paper was designed to study the temperature effect in the mesophilic range (20, 25, 30 and 35 degrees C) on biohydrogen production in AnSBBR (anaerobic sequencing batch biofilm reactor) that co-digested dairy industry effluent (cheese whey) and biodiesel production effluent (glycerin). Influence of the inoculum heat shock pretreatment and micronutrients solution added to influent were also assessed. The best condition for hydrogen production was at the temperature of 30 degrees C, in which it was achieved a productivity of 129.0 molH(2).m(-3).d(-1) and a yield of 5.4 molH(2).kgCOD(-1). Both micronutrient solution and inoculum pretreatment were proven necessary for a better hydrogen productivity. Productivity increased until 30 degrees C, but at 35 degrees C the exacerbated amount of biomass produced caused a rapid decrease in hydrogen production. From the kinetic model, it was observed that the majority of hydrogen production comes from the acidogenesis phase (k(1H) = 1.4 h(-1), k(3H) = 1.4 h(-1), k(4H) = 1.4 h(-1)). The calculated kinetic constants were used to estimate the activation energy of each reaction of the acidogenesis phase by using the Arrhenius model: 110-220 kJ.mol(-1). (C) 2018 Elsevier B.V. All rights reserved. (AU)

• FAPESP's process: 15/06246-7 - Biorefinery concept applied to biological wastewater treatment plants: environmental pollution control coupled with material and energy recovery
• Grantee: Marcelo Zaiat
• Support type: Research Projects - Thematic Grants
• FAPESP's process: 16/03109-1 - Biohydrogen production by co-digestion of whey and glycerin: effect of temperature, organic load, influent concentration and cycle length
• Grantee: Lucas Stracieri
• Support type: Scholarships in Brazil - Scientific Initiation
• FAPESP's process: 14/07692-8 - Co-digestion of glycerin and whey in AnSBBR for biohydrogen and biomethane production
• Grantee: Giovanna Lovato
• Support type: Scholarships in Brazil - Doctorate