Next Article in Journal
Removal of Polycyclic Aromatic Hydrocarbons in a Heterogeneous Fenton Like Oxidation System Using Nanoscale Zero-Valent Iron as a Catalyst
Next Article in Special Issue
Measurement and Modelling of Moisture Distribution and Water Binding Energy of Dredged Sludge
Previous Article in Journal
Improved Cyanobacteria Removal from Harmful Algae Blooms by Two-Cycle, Low-Frequency, Low-Density, and Short-Duration Ultrasonic Radiation
Previous Article in Special Issue
The Use of Chemical Methods and Magnetic Field in Conditioning and Dewatering of Digested Sewage Sludge
Article

Performance of Anaerobic Digestion of Acidified Palm Oil Mill Effluent under Various Organic Loading Rates and Temperatures

1
Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia (UKM), UKM, Bangi 436000, Selangor, Malaysia
2
Research Centre for Sustainable Process Technology (CESPRO), Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia (UKM), UKM, Bangi 436000, Selangor, Malaysia
*
Author to whom correspondence should be addressed.
Water 2020, 12(9), 2432; https://doi.org/10.3390/w12092432
Received: 8 May 2020 / Revised: 17 July 2020 / Accepted: 17 July 2020 / Published: 29 August 2020
(This article belongs to the Special Issue Circle Sustainability of Wastewater and Sludge Treatment)
This study compared the performance of thermophilic and mesophilic digesters of an anaerobic digestion system from palm oil mill effluent (POME), in which temperature is a key parameter that can greatly affect the performance of anaerobic digestion. The digesters were incubated at two distinct temperatures of 55 and 37 °C, and operated with varying organic loading rates (OLRs) of 2.4, 3.2, and 4.0 g COD/L.d by altering the chemical oxygen demand (COD) of acidified POME during feeding. The results indicated that the performance of anaerobic digestion increased as the OLR increased from 2.4 to 4.0 g COD/L.d. At the OLR of 4.0 g COD/L.d, the thermophilic condition showed the highest methane yield of 0.31 ± 0.01 L/g COD, accompanied by the highest COD removal and volatile solid reduction, which were found to be higher than the mesophilic condition. Microbial community analysis via denaturing gradient gel electrophoresis (DGGE) revealed that Methanothermobacter sp. emerges as the dominant microbe, which is known to utilize the carbon dioxide pathway with hydrogen acting as an electron donor for methane formation View Full-Text
Keywords: anaerobic digestion; temperature; palm oil mill effluent; organic loading rate anaerobic digestion; temperature; palm oil mill effluent; organic loading rate
Show Figures

Graphical abstract

MDPI and ACS Style

Fikri Hamzah, M.A.; Abdul, P.M.; Mahmod, S.S.; Azahar, A.M.; Jahim, J.M. Performance of Anaerobic Digestion of Acidified Palm Oil Mill Effluent under Various Organic Loading Rates and Temperatures. Water 2020, 12, 2432. https://doi.org/10.3390/w12092432

AMA Style

Fikri Hamzah MA, Abdul PM, Mahmod SS, Azahar AM, Jahim JM. Performance of Anaerobic Digestion of Acidified Palm Oil Mill Effluent under Various Organic Loading Rates and Temperatures. Water. 2020; 12(9):2432. https://doi.org/10.3390/w12092432

Chicago/Turabian Style

Fikri Hamzah, Muhammad A., Peer M. Abdul, Safa S. Mahmod, Azratul M. Azahar, and Jamaliah M. Jahim 2020. "Performance of Anaerobic Digestion of Acidified Palm Oil Mill Effluent under Various Organic Loading Rates and Temperatures" Water 12, no. 9: 2432. https://doi.org/10.3390/w12092432

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop