Mathematical modeling of bio-hydrogen production from starch wastewater via up-flow anaerobic staged reactor

Mahmoud Nasr, Ahmed Tawfik, Masaaki Suzuki, Shinichi Ookawara

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Hydrogen production from starch wastewater industry via up-flow anaerobic staged reactor was investigated. The reactor was operated at an average organic loading rate of 13.17 ± 8.35 g COD/L d and hydraulic retention time of 8 h. The reactor achieved chemical oxygen demand (COD) and carbohydrate removal efficiencies of 84 and 92%, respectively. The total volatile fatty acids increased from 58.5 ± 30.0 (influent) to 235.6 ± 190.8 mg/L in the treated effluent, indicating that acidogenesis bacteria were dominant in the reactor. The system achieved maximum hydrogen production rate (HPR) and hydrogen yield of 2.48 L H2/d and 8.8 mL H2/g CODremoved, respectively. Simulated model tracks the experimental data with a correlation coefficient (R2 = 0.893). Maximum substrate utilization rate (μmax,s) and maximum volumetric HPR (μmax,h) were calculated at different food to micro-organisms (F/M) ratios of 0.15, 0.31, 0.46, 0.62, and 0.93 g COD/g VSS. Results showed that μmax,s increased to −0.76 g COD/L h at F/M ratio of 0.46, and then remained relatively constant at a value of −0.68 g COD/L h. Similar trends were observed for HPR, where it peaked (μmax,h of 93.89 mL H2/h) at F/M ratio of 0.46.

Original languageEnglish
Pages (from-to)50-58
Number of pages9
JournalDesalination and Water Treatment
Volume54
Issue number1
DOIs
Publication statusPublished - 3 Apr 2015
Externally publishedYes

Fingerprint

Chemical oxygen demand
Hydrogen production
Starch
starch
chemical oxygen demand
Wastewater
hydrogen
wastewater
modeling
Volatile fatty acids
Carbohydrates
Effluents
carbohydrate
Bacteria
fatty acid
Hydraulics
reactor
rate
effluent
hydraulics

Keywords

  • Carbohydrate
  • COD
  • Hydrogen yield
  • Starch wastewater
  • Up-flow anaerobic staged reactor

ASJC Scopus subject areas

  • Pollution
  • Water Science and Technology
  • Ocean Engineering

Cite this

Mathematical modeling of bio-hydrogen production from starch wastewater via up-flow anaerobic staged reactor. / Nasr, Mahmoud; Tawfik, Ahmed; Suzuki, Masaaki; Ookawara, Shinichi.

In: Desalination and Water Treatment, Vol. 54, No. 1, 03.04.2015, p. 50-58.

Research output: Contribution to journalArticle

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