Application of polyethylene glycol immobilized Clostridium sp. LS2 for continuous hydrogen production from palm oil mill effluent in upflow anaerobic sludge blanket reactor

Singh, Lakhveer; Siddiqui, Muhammad Faisal; Ahmad, Anwar; Hasbi, Ab. Rahim Mohd; Sakinah, Mimi; Wahid, Zularisam Ab

doi:10.1016/j.bej.2012.10.010

Cited by 78 publications

(28 citation statements)

References 44 publications

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“…Other results were about 459.3, 495.5, 60.4 and 437.4 mL H 2 /L wastewater with 2, 3, 4 and 6% (v/v), respectively. These results could be due to the inefficient mass transfer arising from the improper immobilized cell loading amount and excessive amount of bio-carrier in the bioreactor, which would have reduced the synthetic medium movement or contact between the microflora and wastewater (Singh et al 2013). The cumulative hydrogen production of vermicelli processing wastewater using immobilizing ringshaped HBPVC at 0-6 % (v/v) is depicted in Figure 1B.…”

Section: Resultsmentioning

confidence: 99%

Immobilized Biofilm in Thermophilic Biohydrogen Production using Synthetic versus Biological Materials

Wongthanate

Polprasert

2015

Braz. arch. biol. technol.

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Biohydrogen production was studied from the vermicelli processing wastewater using synthetic and biological materials as immobilizing substrate employing a mixed culture in a batch reactor operated at the initial pH 6.0 and thermophilic condition (55 ± 1ºC) . Maximum cumulative hydrogen production (1,210 mL H 2 /L wastewater) was observed at 5% (v/v) addition of ring-shaped synthetic material, which was the ring-shaped hydrophobic acrylic. Regarding 5% (v/v) addition of synthetic and biological materials, the maximum cumulative hydrogen production using immobilizing synthetic material of ball-shaped hydrophobic polyethylene (HBPE) (1,256.5 mL H 2 /L wastewater) was a two-fold increase of cumulative hydrogen production when compared to its production using immobilizing biological material of rope-shaped hydrophilic ramie (609.8 mL H 2 /L wastewater

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Section: Resultsmentioning

confidence: 99%

Immobilized Biofilm in Thermophilic Biohydrogen Production using Synthetic versus Biological Materials

Wongthanate

Polprasert

2015

Braz. arch. biol. technol.

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“…Table 4 summarizes the key parameters and results of the most relevant studies. All the previous studies performed using immobilized Clostridium butyricum, either using PEG (Singh et al 2013), alginate bead (Zhao et al 2012), polyurethane foam (Jo et al 2008), polyurethane-activated carbon matrix (Mitchell et al 2009), or acetyl cellulose fiber (Karube et al 1982) demonstrated similar or increased molar hydrogen yield when compared to free-cell systems. There are also indications in literature that Clostridium sp.…”

Section: Hydrogen Yield Obtainedmentioning

confidence: 91%

“…(Ghosh and Hallenbeck 2014), but limited immobilization studies with the objective of producing hydrogen have been carried out with this strain. Some work has been done using immobilizing materials such as polyethylene glycol (Singh et al 2013), calcium alginate beads (Zhao et al 2012), polyurethane-activated carbon matrix (Mitchell et al 2009), ethylene-vinyl acetate copolymer (Lin et al 2009), polyurethane foam (Jo et al 2008), silicone gel (Lin et al 2006), and acetyl cellulose filter (Karube et al 1982). Although in these works hydrogen yield and productivity were improved using immobilized bacteria compared to suspended cells, major issues still remain about the reusability, stability, and regeneration of these immobilizing materials.…”

Section: Electronic Supplementary Materialsmentioning

confidence: 99%

Improving biohydrogen production using Clostridium beijerinckii immobilized with magnetite nanoparticles

Seelert

Ghosh

Yargeau

2015

Appl Microbiol Biotechnol

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In order to supplement the need for alternative energy resources within the near future, enhancing the production of biohydrogen with immobilized Clostridium beijerinckii NCIMB8052 was investigated. Magnetite nanoparticles were functionalized, with chitosan and alginic acid polyelectrolytes using a layer-by-layer method, to promote bacterial attachment. Cultivating C. beijerinckii with these nanoparticles resulted in a shorter lag growth phase and increased total biohydrogen production within 100-ml, 250-ml and 3.6-L reactors compared with freely suspended organisms. The greatest hydrogen yield was obtained in the 250-ml reactor with a value of 2.1±0.7 mol H 2 /mol glucose, corresponding to substrate conversion and energy conversion efficiencies of 52±18 and 10±3 %, respectively. The hydrogen yields obtained using the immobilized bacteria are comparable to values found in literature. However, to make this process viable, further improvements are required to increase the substrate and energy conversion efficiencies.

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Section: Introductionmentioning

confidence: 99%

“…Several suggestions have been made for applications in medicine [2,3] and energy production [4]and especially in the building industry [5]. Poly-ethylene glycol (PEG) is one of the most promising PCMs regarding thermal energy storage applications [1][2][3][4][5][6]. Its advantages include a relatively large heat of fusion [1,6,7], non-corrosiveness [8], non-toxicity [9] and a wide range of phase change temperatures, which can be manipulated by modifying its molecular weight [7,8].…”

Section: Introductionmentioning

confidence: 99%

Investigation of the effects of thermal, oxidative and irradiation treatments on the behaviour of poly-ethylene glycol as a phase change material in thermal energy storage systems

Ajji

Jouhara

2017

Energy

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Poly-ethylene glyco1 (PEG) with an average molecular weight of 2000 g/mol has been investigated as a phase change material for thermal energy storage applications. PEG sets were maintained at 80°C for 861 hours in air, nitrogen, and vacuum environment; the samples maintained in vacuum were further treated with air for a period of several weeks. Furthermore, another set of PEG samples was exposed to electron radiation in order to modify some of their polymer properties, such as their melting point Tm, their heat of fusion ΔHm, their crystallisation temperature Tc, the heat of crystallisation ΔHc, and their thermal decomposition temperature Tdecomp. The experiments showed that the presence of oxygen led to the degradation of the polymer and to a slight decrease of its melting temperature, while the treatment with electron radiation reduced polymer's heat of fusion. FTIR spectrum analysis showed bands assigned to carbonyl/carboxylate functional groups, indicating the degradation of PEG in the presence of air/oxygen.

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Application of polyethylene glycol immobilized Clostridium sp. LS2 for continuous hydrogen production from palm oil mill effluent in upflow anaerobic sludge blanket reactor

Cited by 78 publications

References 44 publications

Immobilized Biofilm in Thermophilic Biohydrogen Production using Synthetic versus Biological Materials

Immobilized Biofilm in Thermophilic Biohydrogen Production using Synthetic versus Biological Materials

Improving biohydrogen production using Clostridium beijerinckii immobilized with magnetite nanoparticles

Investigation of the effects of thermal, oxidative and irradiation treatments on the behaviour of poly-ethylene glycol as a phase change material in thermal energy storage systems

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