The use of acidified palm oil mill effluent for thermophilic biomethane production by changing the hydraulic retention time in anaerobic sequencing batch reactor

Muhammad Azri Abd Nasir, Jamaliah Md Jahim, Peer Mohamed Abdul, Hemavathi Silvamany, Rizal Muzhafar Maaroff, Mohammed Faisal Mohammed Yunus

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The feasibility of thermophilic biomethane production from acidified palm oil mill effluent (POME) was assessed in a 5 L anaerobic sequencing batch reactor (ASBR). The effects of various hydraulic retention time (HRT) (10-1 d) on methane production performance and the stability of ASBR in treating acidified POME were evaluated herein. It was found that the highest methane productivity of 5.65 L CH4/L/d could be attained at HRT of 2 d. However, the removal of chemical oxygen demand (COD) and volatile fatty acid (VFA) at this HRT is rather low (65-62%) hence making it inefficient to operate at HRT 2 d since most of the contaminants remained in the liquid streams. Thus the most recommended HRT was 3 d with maximum methane productivity of 3.96 L CH4/L/d with corresponding methane yield of 260.3 L CH4/kgCODremoved. The COD removal efficiency at 3 d HRT was 71%, and the VFA consumption was more than 80%. The correlation of total VFA: total alkalinity (TVFA: TA) at HRT of 3 d was found to be 0.1. This recommended HRT of 3 is equally shorter than any previously reported application of POME as a substrate for thermophilic biomethane.

Original languageEnglish
JournalInternational Journal of Hydrogen Energy
DOIs
Publication statusAccepted/In press - 1 Jan 2018

Fingerprint

Palm oil
sequencing
effluents
Batch reactors
hydraulics
Effluents
oils
reactors
Hydraulics
Volatile fatty acids
Methane
fatty acids
methane
Chemical oxygen demand
productivity
Productivity
alkalinity
oxygen
Alkalinity
contaminants

Keywords

  • Acidified POME
  • ASBR
  • Biomethane
  • HRT
  • Thermophilic

ASJC Scopus subject areas

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

Cite this

The use of acidified palm oil mill effluent for thermophilic biomethane production by changing the hydraulic retention time in anaerobic sequencing batch reactor. / Abd Nasir, Muhammad Azri; Md Jahim, Jamaliah; Abdul, Peer Mohamed; Silvamany, Hemavathi; Maaroff, Rizal Muzhafar; Mohammed Yunus, Mohammed Faisal.

In: International Journal of Hydrogen Energy, 01.01.2018.

Research output: Contribution to journalArticle

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