Controlling methane and hydrogen production from cheese whey in an EGSB reactor by changing the HRT.

This study assessed the effects of hydraulic retention time (HRT; 8 h-0.25 h) on simultaneous hydrogen and methane production from cheese whey (5000 mg carbohydrates/L) in a mesophilic (30 °C) expanded granular sludge bed (EGSB) reactor. Methane production was observed at HRTs from 4 to 0.

Valorization of the Crude Glycerol for Propionic Acid Production Using an Anaerobic Fluidized Bed Reactor with Grounded Tires as Support Material.

This study evaluated the propionic acid (HPr) production from crude glycerol (CG) (5000 mg L) in an anaerobic fluidized bed reactor (AFBR). Grounded tire particles (2.8-3.

Co-Fermentation of Cheese Whey and Crude Glycerol in EGSB Reactor as a Strategy to Enhance Continuous Hydrogen and Propionic Acid Production.

This study evaluated the production of hydrogen and propionic acid in an expanded granular sludge bed (EGSB) reactor by co-fermentation of cheese whey (CW) and crude glycerol (CG). The reactor was operated at hydraulic retention time (HRT) of 8 h by changing the CW/CG ratio from 5:1 to 5:2, 5:3, 5:4, and 5:5. At the ratio of 5:5, HRT was reduced from 8 to 0.

Improving EGSB reactor performance for simultaneous bioenergy and organic acid production from cheese whey via continuous biological H production.

Objectives: To evaluate the influence of hydraulic retention time (HRT) and cheese whey (CW) substrate concentration (15 and 25 g lactose l) on the performance of EGSB reactors (R15 and R25, respectively) for H production.

Results: A decrease in the HRT from 8 to 4 h favored the H yield and H production rate (HPR) in R15, with maximum values of 0.86 ± 0.

Continuous Hydrogen Production from Agricultural Wastewaters at Thermophilic and Hyperthermophilic Temperatures.

The objective of this study was to investigate the effects of hydraulic retention time (HRT) (8 to 0.5 h) and temperature (55 to 75 °C) in two anaerobic fluidized bed reactors (AFBR) using cheese whey (AFBR-CW = 10,000 mg sugars L) and vinasse (AFBR-V = 10,000 mg COD L) as substrates. Decreasing the HRT to 0.

Bioconversion of waste office paper to hydrogen using pretreated rumen fluid inoculum.

In this study, a microbial consortium from an acid-treated rumen fluid was used to improve the yields of H production from paper residues in batch reactors. The anaerobic batch reactors, which contained paper and cellulose, were operated under three conditions: (1) 0.5 g paper/L, (2) 2 g paper/L, and (3) 4 g paper/L.