Effects of volatile fatty acids in biohydrogen effluent on biohythane production from palm oil mill effluent under thermophilic condition

Mamimin, Chonticha; Prasertsan, Poonsuk; Kongjan, Prawit; O‐Thong, Sompong

doi:10.1016/j.ejbt.2017.07.006

Cited by 83 publications

(24 citation statements)

References 39 publications

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“…Therefore, the range of pore sizes, molecular weight cut-off (MWCO), and required transmembrane pressure can be used to define the types of the membrane and their suitable applications [77]. Based on this, researchers have classified membranes into MF, UF, NF, and RO [39,78].…”

Section: Membrane In Mbr Systemmentioning

confidence: 99%

“…Thus, this obliges the need for supplementary aeration to meet up with the ever-increasing oxygen demand and imbalance in the F/M ratio [161,162]. In a balanced aerobic MBR system, a certain amount of activated sludge is predetermined to maintained the food -microorganism (F/M) ratio to ensure equilibrium in aeration depletion-replenishment, by so, the problem of bulking or sudden increase in aeration is curtailed and this allows optimal biodegradation [78,163]. Normally, the rates of oxygen consumption by the active biomass as well as the required scouring air are one of the critical factors considered in the design of MBR [63].…”

Section: Aerobic Processes In Mbr (Aermbr)mentioning

confidence: 99%

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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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Section: Membrane In Mbr Systemmentioning

confidence: 99%

Section: Aerobic Processes In Mbr (Aermbr)mentioning

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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“…Different studies on the effects of volatile fatty acids (VFAs) [56], pH [57] and organic loading rate (OLR) [58] using POME were also done, either using single stage or integrated reactors. Studies using a single-stage reactor revealed that the biogas production rate could be accomplished at a HRT of 1.5 days and the system was capable to effectively treat POME [40].…”

Section: Biogas Production From Pomementioning

confidence: 99%

Integrated System Technology of POME Treatment for Biohydrogen and Biomethane Production in Malaysia

et al. 2020

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In recent years, production of biohydrogen and biomethane (or a mixture of these; biohythane) from organic wastes using two-stage bioreactor have been implemented by developing countries such as Germany, USA and the United Kingdom using the anaerobic digestion (AD) process. In Thailand, biohythane production in a two-stage process has been widely studied. However, in Malaysia, treating organic and agricultural wastes using an integrated system of dark fermentation (DF) coupled with anaerobic digestion (AD) is scarce. For instance, in most oil palm mills, palm oil mill effluent (POME) is treated using a conventional open-ponding system or closed-digester tank for biogas capture. This paper reviewed relevant literature studies on treating POME and other organic wastes using integrated bioreactor implementing DF and/or AD process for biohydrogen and/or biomethane production. Although the number of papers that have been published in this area is increasing, a further review is needed to reveal current technology used and its benefits, especially in Malaysia, since Malaysia is the second-largest oil palm producer in the world.

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“…The H 2 yield from bean curd manufacturing waste was significantly low compared to carbohydrate-rich substrates [80]. For stable H 2 fermentation, a carbon/nitrogen (C/N) ratio of feedstock greater than 20 is recommended [81].…”

Section: Feedstocksmentioning

confidence: 99%

Biohythane Production from Organic Wastes by Two-Stage Anaerobic Fermentation Technology

O‐Thong¹,

Mamimin²,

Prasertsan³

2018

Advances in Biofuels and Bioenergy

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The combination of biohydrogen and biomethane production from organic wastes via two-stage anaerobic fermentation could yield a biohythane gas with a composition of 10-15% H 2 , 50-55% CH 4 and 30-40% CO 2. Biohythane could be upgraded to biobased hythane by removing of CO 2. The two-stage anaerobic fermentation process is based on the different function between acidogens and methanogens in physiology, nutrition needs, growth kinetics, and sensitivity to environmental conditions. In the first stage, the substrate is fermented to H 2 , CO 2 , volatile fatty acids (VFA), lactic acid and alcohols by acidogens with optimal pH of 5-6 and hydraulic retention time (HRT) of 1-3 days. In the second stage, the remaining VFA, lactic acid, and alcohols in the H 2 effluent are converted to CH 4 and CO 2 by methanogens under optimal pH range of 7-8 and HRT of 10-15 days. The advantage of biohythane over traditional biogas are more environmentally, flexible of H 2 /CH 4 ratio, higher energy recovery, higher degradation efficiency, shorter fermentation time, and high potential to use as vehicle fuel. This chapter outlines the general approach of biohythane production via two-stage anaerobic fermentation, principles, microorganisms, reactor configuration, process parameters, methods for improving productivity as well as technical challenges toward the scale-up process of biohythane process.

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Effects of volatile fatty acids in biohydrogen effluent on biohythane production from palm oil mill effluent under thermophilic condition

Cited by 83 publications

References 39 publications

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

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

Integrated System Technology of POME Treatment for Biohydrogen and Biomethane Production in Malaysia

Biohythane Production from Organic Wastes by Two-Stage Anaerobic Fermentation Technology

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