Process enhancement of hydrogen and methane production from palm oil mill effluent using two-stage thermophilic and mesophilic fermentation

Krishnan, Santhana; Singh, Lakhveer; Sakinah, Mimi; Thakur, Sunil; Wahid, Zularisam Ab; Alkasrawi, Malek

doi:10.1016/j.ijhydene.2016.05.037

Cited by 101 publications

(14 citation statements)

References 47 publications

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“…On the other hand, studies on mesophilic BioCH 4 production of two-stage anaerobic digestion using POME reported similar phenomenon as this study, but with higher HRTs; i.e. 5 d 47 , and 15 d 15,16 . According to Hamzah and co-authors, BioCH 4 production under thermophilic conditions recorded higher productivity, faster stabilisation and higher COD removal than the mesophilic BioCH 4 counterpart process 10 .…”

Section: Discussionsupporting

confidence: 86%

Potential Utilisation of Dark-Fermented Palm Oil Mill Effluent in Continuous Production of Biomethane by Self-Granulated Mixed Culture

Mahmod

Azahar

Luthfi

et al. 2020

Sci Rep

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Two-stage anaerobic digestion of palm oil mill effluent (POME) is a promising method for converting the waste from the largest agricultural industry in Southeast Asia into a clean and sustainable energy. This study investigates the degradation of acid-rich effluent from the dark fermentation stage for the production of biomethane (BioCH4) in a 30-L continuous stirred-tank reactor (CSTR). The continuous methanogenic process was operated with varied HRTs (10 - 1 day) and OLRs (4.6–40.6 gCOD/L.d−1) under thermophilic conditions. Methanothermobacter sp. was the dominant thermophilic archaea that was responsible for the production rate of 4.3 LCH4/LPOME.d−1 and methane yield of 256.77 LCH4kgCOD at HRT of 2 d, which is the lowest HRT reported in the literature. The process was able to digest 85% and 64% of the initial POME’s COD and TSS, respectively. The formation of methane producing granules (MPG) played a pivotal role in sustaining the efficient and productive anaerobic system. We report herein that the anaerobic digestion was not only beneficial in reducing the contaminants in the liquid effluent, but generating BioCH4 gas with a positive net energy gain of 7.6 kJ/gCOD.

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Section: Discussionsupporting

confidence: 86%

Potential Utilisation of Dark-Fermented Palm Oil Mill Effluent in Continuous Production of Biomethane by Self-Granulated Mixed Culture

Mahmod

Azahar

Luthfi

et al. 2020

Sci Rep

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“…Table 3 From the table it is clear that the limitation in organic loading rate could be avoided in the two-stage anaerobic processes as it eliminates the possible inhibition of methanogenesis by acidification (Intanoo et al, 2014;Jariyaboon et al, 2015;Zhong et al, 2015). In this connection, a study aimed for simultaneous production of hydrogen and methane from palm oil mill effluent using two-stage thermophilic and mesophilic fermentation (Krishnan et al, 2016). The total hydrogen and methane yields were 215 L H 2 /kgCOD −1 and 320 L CH 4 /kgCOD −1 , respectively, with a concurrent removal of 94% organic content from the substrate.…”

Section: Organic Loading Ratementioning

confidence: 99%

Optimization of process parameters for production of volatile fatty acid, biohydrogen and methane from anaerobic digestion

Khan

Ngo

Guo

et al. 2016

Bioresource Technology

263

104

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The anaerobic digestion process has been primarily utilized for methane containing biogas production over the past few years. However, the digestion process could also be optimized for producing volatile fatty acids (VFAs) and biohydrogen. This is the first review article that combines the optimization approaches for all three possible products from the anaerobic digestion. In this review study, the types and configurations of the bioreactor are discussed for each type of product. This is followed by a review on optimization of common process parameters (e.g. temperature, pH, retention time and organic loading rate) separately for the production of VFA, biohydrogen and methane. This review also includes additional parameters, treatment methods or special additives that wield a significant and positive effect on production rate and these products' yield.

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“…It has been reported that the performance of bacteria in the anaerobic process is influenced by environmental conditions such as temperature, pH and nutrients availability [136]. Particularly, methanogen bacteria is very sensitive to pH and is best performed at a neutral value, while pH value less than 7 is more suitable for both acidogenosis and acetogenesis activities at a temperature ranged between 35-40 • C [137][138][139]. Anaerobic processes have been applied in MBR with different configurations, both the sidestream and submerged.…”

Section: Treatments Process Using Mbrmentioning

confidence: 99%

Treatment of Palm Oil Mill Effluent Using Membrane Bioreactor: Novel Processes and Their Major Drawbacks

Abdulsalam

Man

Idris

et al. 2018

Water

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Over the years, different types of alternative technologies have been developed and used for palm oil mill effluent (POME) treatment. Specifically, membrane bioreactor (MBR) has been employed to relegate pollutants contained in POME under different operating conditions, and the technology was found to be promising. The major challenge impeding the wider application of this technology is membrane fouling, which usually attracts high operating energy and running cost. In this regard, novel methods of mitigating membrane fouling through the treatment processes have been developed. Therefore, this review article specifically focuses on the recent treatment processes of POME using MBR, with particular emphasis on innovative processes conditions such as aerobic, anaerobic, and hybrid processing as well as their performance in relation to fouling minimization. Furthermore, the effects of sonication and thermophilic and mesophilic conditions on membrane blockage were critically reviewed. The types of foulants and fouling mechanism as influenced by different operating conditions were also analyzed censoriously.

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Process enhancement of hydrogen and methane production from palm oil mill effluent using two-stage thermophilic and mesophilic fermentation

Cited by 101 publications

References 47 publications

Potential Utilisation of Dark-Fermented Palm Oil Mill Effluent in Continuous Production of Biomethane by Self-Granulated Mixed Culture

Potential Utilisation of Dark-Fermented Palm Oil Mill Effluent in Continuous Production of Biomethane by Self-Granulated Mixed Culture

Optimization of process parameters for production of volatile fatty acid, biohydrogen and methane from anaerobic digestion

Treatment of Palm Oil Mill Effluent Using Membrane Bioreactor: Novel Processes and Their Major Drawbacks

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