Assessment of immobilized cell reactor and microbial fuel cell for simultaneous cheese whey treatment and lactic acid/electricity production

Mostafa Ghasemi, Azri Ahmad, Tahereh Jafary, Abul K. Azad, Saeid Kakooei, Wan Ramli Wan Daud, Mehdi Sedighi

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Two biological methods for treatment of cheese whey and concentrated cheese whey were investigated in this research. As the first method, fermentation of cheese whey for production of lactic acid, in an immobilized cell reactor (ICR) was successfully carried out. The immobilisation of Lactobacillus bulgaricus was performed by the enriched cells cultured media harvested at exponential growth phase. Furthermore, the FTIR analysis has been done to prove the production of lactic acid. The COD removal during the continuous process for both whey and concentrated whey was above 70% which showed the capability of reaction for wastewater treatment. The cells were immobilised by sodium alginate as a perfect polymer in this regard. The maximum produced lactic acid from whey was 10.7 g l-1 at 0.125 h-1 and 19.5 g l-1 from concentrated whey at 0.063 h-1. Finally it can be concluded that the process is efficient for lactic acid production and COD removal simultaneously. As the second studied method, whey and concentrated cheese whey were used as the sources of carbon in a microbial fuel cell. The power densities of 188.8 and 288.12 mW m-2 were recorded for whey-fed and concentrated whey-fed MFCs while the COD removal were 95% and 86% respectively. Biological wastewater treatment can be a very efficient alternative for traditional wastewater treatment which selecting any and or integrating of them depends on specific applications needed to be achieved.

Original languageEnglish
JournalInternational Journal of Hydrogen Energy
DOIs
Publication statusAccepted/In press - 5 Oct 2015

Fingerprint

Microbial fuel cells
Cheeses
lactic acid
nuclear fuels
Lactic acid
electricity
fuel cells
crack opening displacement
Electricity
Cells
Wastewater treatment
acids
cells
Sodium alginate
fermentation
immobilization
cultured cells
Fermentation
radiant flux density
reactors

Keywords

  • ICR process
  • Lactic acid
  • Lactobacillus bulgaricus
  • Microbial fuel cell
  • Wastewater treatment

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

Cite this

Assessment of immobilized cell reactor and microbial fuel cell for simultaneous cheese whey treatment and lactic acid/electricity production. / Ghasemi, Mostafa; Ahmad, Azri; Jafary, Tahereh; Azad, Abul K.; Kakooei, Saeid; Wan Daud, Wan Ramli; Sedighi, Mehdi.

In: International Journal of Hydrogen Energy, 05.10.2015.

Research output: Contribution to journalArticle

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