Simultaneous treatment of raw palm oil mill effluent and biodegradation of palm fiber in a high-rate CSTR

Khemkhao, Maneerat; Techkarnjanaruk, Somkiet; Phalakornkule, Chantaraporn

doi:10.1016/j.biortech.2014.11.052

Cited by 43 publications

(14 citation statements)

References 34 publications

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“…As reported by Zainudin et al (2013), a POME anaerobic sludge was found to be enriched with cellulolytic and hemicellulolytic bacteria which can effectively degrade palm fiber. In addition, as reported by Khemkhao et al (2015), the microbial consortium in a sludge from the same domestic wastewater treatment plant as that in this study became enriched with cellulolytic and hemicellulolytic bacteria after being fed with the raw POME for a few months. These bacteria are capable of producing cellulase and xylanase, which in turn are known to play an important role in lignocelluloses degradation.…”

Section: Resultssupporting

confidence: 50%

Comparative biochemical methane potential of paragrass using an unacclimated and an acclimated microbial consortium

Nuchdang¹,

Khemkhao²,

Techkarnjanaruk

et al. 2015

Bioresource Technology

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Section: Resultssupporting

confidence: 50%

Comparative biochemical methane potential of paragrass using an unacclimated and an acclimated microbial consortium

Nuchdang¹,

Khemkhao²,

Techkarnjanaruk

et al. 2015

Bioresource Technology

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“…S. zehnderi is a well-known LCFA degrader [65], and the enrichment of Syntrophomonas after the supplementation of CM was reported before [2,65]. Aminobacterium colombiense, the amino acid degrader [66], and Acetomicrobium mobile, the acetate producer [67], were found in all batches with almost similar abundance. The highest abundances for Dechloromonas hortensis (14%) and Moorella humiferrea (19%) were found in nFe 3 O 4 -supplemented batches.…”

Section: Conductive Material-based Microbial Community Changementioning

confidence: 76%

Enhanced Anaerobic Digestion of Long Chain Fatty Acid by Adding Magnetite and Carbon Nanotubes

Mostafa

Song

et al. 2020

Microorganisms

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This study investigated the impact of stimulating direct interspecies electron transfer (DIET), by supplementing nano-sized magnetite (nFe3O4, 0.5 g Fe/g VSS) and carbon nanotubes (CNT, 1 g/L), in anaerobic digestion of oleic acid (OA) at various concentrations (0.10–4.00 g chemical oxygen demand(COD)/L). Both supplementations could enhance CH4 production, and its beneficial impact increased with increased OA concentration. The biggest improvements of 114% and 165% compared to the control were achieved by nFe3O4 and CNT, respectively, at OA of 4 g COD/L. The enhancement can be attributed to the increased sludge conductivity: 7.1 ± 0.5 (control), 12.5 ± 0.8 (nFe3O4-added), and 15.7 ± 1.1 µS/cm (CNT-supplemented). Dissolved iron concentration, released from nFe3O4, seemed to have a negligible role in improving CH4 production. The excretion of electron shuttles, i.e., humic-like substances and protein-like substances, were found to be stimulated by supplementing nFe3O4 and CNT. Microbial diversity was found to be simplified under DIET-stimulating conditions, whereby five genera accounted for 88% of the total sequences in the control, while more than 82% were represented by only two genera (Methanotrix concilli and Methanosarcina flavescens) by supplementing nFe3O4 and CNT. In addition, the abudance of electro-active bacteria such as Syntrophomonas zehnderi was significantly increased from 17% to around 45%.

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“…Carrier anaerobic baffled reactor: In an ASBR, a packed bed was added which has hollow in the centre [75]. A deflector was fixed in a continuous stirred tank reactor [76]. Both are used for improving the retention of biomass.…”

Section: Pome Pretreatmentmentioning

confidence: 99%

Biomethane Production from Anaerobic Codigestion of Palm Oil Mill Effluent with Cattle Manure: A Review

et al. 2019

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Biogas is conventionally utilized in a gas engine to convert the chemical energy into electricity and into thermal energy for heating purposes and is also pumped into the natural gas grid line after impurities are removed. Biogas production from palm oil mill effluent is one of the best options for economic expansion and this would reduce environmental impacts in developing countries like Malaysia. This study aims to perform an analysis of the economic and environmental prospects of biogas production from the anaerobic codigestion method from palm oil mill effluent mixed with cow manure. Anaerobic codigestion technology is considered a practical process by which to overcome the complications of substance properties and system optimization in particular substance digestion operations. Comparisons among various treatment technologies of palm oil mill effluent and their applications have been studied thoroughly. The factors that affect biogas production, along with strategies for their improvement, were studied in present report. The economic feasibility of biogas plant where palm oil mill effluent and cattle manure are main substrates and anaerobic codigestion is the method, has been successfully predicted. Results revealed this might be more feasible if this technology is used on a large scale. Construction of the proposed biomethanization plant is economically feasible because it is projected that about a four-year return-on-investment will be achieved. In conclusion, the present work demonstrates a comprehensive feasibility framework by which to integrate the different features needed to enhance biomethane generation.

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Simultaneous treatment of raw palm oil mill effluent and biodegradation of palm fiber in a high-rate CSTR

Cited by 43 publications

References 34 publications

Comparative biochemical methane potential of paragrass using an unacclimated and an acclimated microbial consortium

Comparative biochemical methane potential of paragrass using an unacclimated and an acclimated microbial consortium

Enhanced Anaerobic Digestion of Long Chain Fatty Acid by Adding Magnetite and Carbon Nanotubes

Biomethane Production from Anaerobic Codigestion of Palm Oil Mill Effluent with Cattle Manure: A Review

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