Evaluating Biomethane Potential of Inocula from Different Active Biogas Digesters for Palm Oil Mill Effluent by BMP and SMA:  Effect of Dilution and Sources

Sawinee  SANGSRI; Chairat  SIRIPATANA; Nirattisai  RAKMAK; Pornwimon  WADCHASIT; Sunwanee  JIJAI

doi:10.48048/wjst.2021.6515

Authors

Sawinee SANGSRI Department of Civil and Environmental School of Engineering and Resources, Walailak University, Nakhon Si Thammarat 80160, Thailand
Chairat SIRIPATANA Biomass and Oil-Palm Excellence Center, Walailak University, Nakhon Si Thammarat 80160, Thailand
Nirattisai RAKMAK Department of Civil and Environmental School of Engineering and Resources, Walailak University, Nakhon Si Thammarat 80160, Thailand
Pornwimon WADCHASIT Department of Civil and Environmental School of Engineering and Resources, Walailak University, Nakhon Si Thammarat 80160, Thailand
Sunwanee JIJAI Faculty of Science, Technology and Agriculture, Yala Rajabhat University, Yala 95000, Thailand

DOI:

https://doi.org/10.48048/wjst.2021.6515

Keywords:

Inoculum for anaerobic digestion, Start-up of biogas digesters, Gompertz 2 substrate model, POME, SMA versus BMP tests

Abstract

This study aims to evaluate how inoculum’s origin affects the methane yield of palm oil mill effluent (POME) by measuring the specific methanogenic activities (SMA) and bio-methane potential (BMP) of POME at different dilutions (100, 80, 60, 40, and 20 % of initial POME) and by using active anaerobic sludge (as inocula) from 3 palm oil mills (S₁, S₂, S₃). The anaerobic digesters were operated in batch mode at a temperature of 40 °C until methane generation ceased. The corresponding SMA were 0.0159, 0.0098 and 0.0333 gCOD /(gVSS d) for S₁, S₂ and S₃, respectively. The results showed that POME without dilution gave the highest cumulative biogas, 4162, 2857 and 2678 mL for S₂, S₃ and S₁, respectively. However, 20 % dilution from original POME gave the highest methane yield (as BMP) 126, 88 and 84 mL CH₄/gCOD removed for S₂, S₃ and S₁, respectively. In this study, 2 mathematical models were selected including the corrected Gompertz equation and Gompertz two substrate models. They were applied to characterize the kinetics of the anaerobic digestion processes and to compare the BMP data from the experiments. Both models could represent all BMP data satisfactory although only Gompertz 2 substrate model showed almost perfect fitting and could characterize the influence of slowly degradable portion of POME. Accordingly, the slowly degradable portion of POME was estimated to be 10 % of total COD.

Downloads

Download data is not yet available.

Metrics

Metrics Loading ...

References

GD Najafpour, AAL Zinatizadeh, AR Mohamed, MH Isa and H Nasrollahzadeh. High-rate anaerobic digestion of palm oil mill effluent in an upflow anaerobic sludge-fixed film bioreactor. Process Biochem. 2006; 41, 370-9.

KW Chou, I Norli and A Anees. Evaluation of the effect of temperature, NaOH concentration and time on solubilization of palm oil mill effluent (POME) using response surface methodology (RSM). Bioresource Tech. 2010; 101, 8616-22.

PE Poh and MF Chong. Development of anaerobic digestion methods for palm oil mill effluent (POME) treatment. Bioresource Tech. 2009; 100, 1-9.

J Ho and S Sung. Methanogenic activities in anaerobic membrane bioreactors (AnMBR) treating synthetic municipal wastewater. Bioresource Tech. 2010; 101, 2191-6.

S Dechrugsa, D Kantachote and S Chaiprapat. Effects of inoculum to substrate ratio, substrate mix ratio and inoculum source on batch co-digestion of grass and pig manure. Bioresource Tech. 2013; 146, 101-8.

MA Abdel-Hadi. A simple apparatus for biogas quality determination. Biol. Eng. 2008; 25, 1055-66.

WF Owen, DC Stuckey, JB Healy, LY Young and PL McCarty. Bioassay for monitoring biochemical methane potential and anaerobic toxicity. Water Res. 1979; 13, 485-92.

JH Patil, A Raj, S Vinaykumar, H Manjunath, A Srinidhi. Biomethanation of water hyacinth, poultry litter, cow manure and primary sludge: A comparative analysis. Res. J. Chem. Sci. 2011; 1, 22-6.

TH Ergüder, U Tezel, E Güven and GN Demirer. Anaerobic biotransformation and methane generation potential of cheese whey in batch and UASB reactors. Waste Manag. 2001; 21, 643-50.

APHA, AWWA and WEF. Standard methods for the examination of water and wastewater. 19th ed. American Public Health Association, Washington DC, 2005.

C Siripatana, P Kongian, N Yingthavorn and N Rakmak. Mathematical modeling of existing two stage anaerobic digestion process for palm oil mill wastewater. Teknologi 2016; 78, 21-6.

L Noynoo, S Jijai, K Phayungphan, N Rakmak and C Siripatana. Gompertz-type two-substrate models for batch anaerobic co-digestion. Lecture Notes in Applied Mathematics and Applied Science in Engineering. Malaysia Technical Scientist Association, 2019, p. 21-30.

DJ Batstone, J Keller, I Angelidaki, SV Kalyuzhnyi, SG Pavlostathis, A Rozzi, WTM Sanders, H Siegrist and VA Vavilin. The IWA Anaerobic Digestion Model No 1 (ADM1). Water Sci. Tech. 2002; 45, 65-73.

W Choorit and P Wisarnwan. Effect of temperature on the anaerobic digestion of palm oil mill effluent. Electron. J. Biotechnol. 2007; 10, 376-85.

S Jijai, S Muleng and C Siripatana. Effect of dilution and ash supplement on the bio-methane potential of palm oil mill effluent (POME). In: Proceedings of the 4th International Conference on Research, Implementation, and Education of Mathematics and Science, AIP Publishing, 2017, 020013.