scholarly journals Optimization of Ni-B Catalyst with Response Surface Methodology in Hydrogen Production

2021 ◽  
Author(s):  
Hüseyin ELÇİÇEK
Keyword(s):  
Response Surface Methodology ◽  
Hydrogen Production ◽  
Response Surface

Optimization of the electrooxidation of aqueous ammonium sulfite for hydrogen production at near-neutral pH using response surface methodology

2020 ◽  
Vol 45 (27) ◽  
pp. 13821-13831 ◽  
Author(s):  
Raúl A. Márquez-Montes ◽  
Raúl E. Orozco-Mena ◽  
Alejandro A. Camacho-Dávila ◽  
Samuel Pérez-Vega ◽  
Virginia H. Collins-Martínez ◽  
...  
Keyword(s):  
Response Surface Methodology ◽  
Hydrogen Production ◽  
Response Surface ◽  
Neutral Ph ◽  
Ammonium Sulfite

scholarly journals Design and optimization of hydrogen production from hydrothermally pretreated sugarcane bagasse using response surface methodology

2017 ◽  
Vol 76 (1) ◽  
pp. 95-105 ◽  
Author(s):  
Lais Américo Soares ◽  
Juliana Kawanishi Braga ◽  
Fabrício Motteran ◽  
Isabel Kimiko Sakamoto ◽  
Edson Luiz Silva ◽  
...  
Keyword(s):  
Response Surface Methodology ◽  
Hydrogen Production ◽  
Response Surface ◽  
Sugarcane Bagasse ◽  
Yeast Extract ◽  
Denaturing Gradient Gel Electrophoresis ◽  
Incubation Temperature ◽  
P Value ◽  
Design And Optimization ◽  
Extract Concentration

Hydrogen production from hydrothermally pretreated (200 °C for 10 min at 16 bar) sugarcane bagasse was analyzed using response surface methodology. The yeast extract concentration and the temperature had a significant influence for hydrogen production (p-value 0.027 and 0.009, respectively). Maximum hydrogen production (17.7 mmol/L) was observed with 3 g/L yeast extract at 60 °C (C10). In this conditions were produced acetic acid (50.44 mg/L), butyric acid (209.71 mg/L), ethanol (38.4 mg/L), and methane (6.27 mmol/L). Lower hydrogen productions (3.5 mmol/L and 3.9 mmol/L) were observed under the conditions C7 (2 g/L of yeast extract, 35.8 °C) and C9 (1 g/L of yeast extract, 40 °C), respectively. The low yeast extract concentration and low temperature caused a negative effect on the hydrogen production. By means of denaturing gradient gel electrophoresis 20% of similarity was observed between the archaeal population of mesophilic (35 and 40 °C) and thermophilic (50, 60 and 64 °C) reactors. Likewise, similarity of 22% was noted between the bacterial population for the reactors with the lowest hydrogen production (3.5 mmol/L), at 35.8 °C and with the highest hydrogen production (17.7 mmol/L) at 60 °C demonstrating that microbial population modification was a function of incubation temperature variation.

Sign in / Sign up

Export Citation Format

Share Document