Biofilm formation on granular activated carbon in xylose and glucose mixture for thermophilic biohydrogen production

Jamali, Nur Syakina; Jahim, Jamaliah Md; Isahak, Wan Nor Roslam Wan

doi:10.1016/j.ijhydene.2016.05.092

Cited by 55 publications

(19 citation statements)

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“…Immobilisation by adhesion through self-attachment of microorganism and activated carbon is noticeably enhanced cultural cell density at thermophilic operating condition. The GAC provide a structural template directing cell growth and prominent to increase hydrogen production performance compared to suspended culture [11,12]. …”

Section: Fesem Imagesmentioning

confidence: 99%

Optimization of Thermophilic Biohydrogen Production by Microflora of Palm Oil Mill Effluent: Cell Attachment on Granular Activated Carbon as Support Media

Jamali

Jahim²

2016

MJAS

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In this study, the biohydrogen production by microflora of palm oil mill effluent (POME) from glucose and xylose fermentation were investigated. Synthetic medium was prepared based on sugar composition present in POME at 7 g/L of glucose and 3 g/L of xylose was used as substrate carbon source. Prior to optimization, 10% of microflora POME was acclimatized in the synthetic medium with the help of granular activated carbon as their support media until consistent hydrogen percentage at 44 ± 1.7% was obtained. Optimization that was conducted using response surface methodology (RSM) by quadratic model of central composite design was found to give optimum parameters of thermophilic microbial growth at pH 6, temperature 60 °C and 10% (v/v) of sludge percentage. Results obtained for hydrogen productivity (1.32 ± 0.01 mmol H 2 /L.h, 32.36 ± 0.75 ml H 2 /L.h) and hydrogen yield (1.22 ± 0.10 mol H 2 /mol sugar consumed) from an average of experimental data reached small error of different (0.8%, 1.0% and 8.3%) to predicted RSM data at optimum condition respectively. The model provided a useful approach for biohydrogen production by POME microflora sludge by using granular activated carbon as their support media.Keywords: biohydrogen, thermophilic, palm oil mill effluent, synthetic medium, optimization Abstrak Melalui kajian ini, penghasilan biohidrogen oleh mikroflora sisa kilang minyak sawit (POME) dari glukosa dan xilosa penapaian telah dikaji. Media sintetik telah disediakan berdasarkan komposisi gula yang terkandung dalam POME sebanyak 7 g/L glukosa dan 3 g/L xilosa telah digunakan sebagai sumber substrat karbon. Sebelum pengoptimuman dijalankan, 10% daripada mikroflora POME telah disesuaikan dalam media sintetik dengan bantuan karbon berbutir aktif sebagai media sokongan mereka sehingga peratusan hidrogen secara konsisten pada 44 ± 1.7% telah diperolehi. Pengoptimuman yang dijalankan dengan menggunakan kaedah gerak balas permukaan (RSM) oleh model kuadratik reka bentuk komposit berpusat telah mendapati bahawa parameter optimum bagi pertumbuhan mikrob termofilik adalah pada pH 6, suhu 60 °C dan 10% (v/v) peratusan enapcemar. Keputusan yang diperolehi untuk pengeluaran hidrogen (1.32 ± 0.01 mmol H 2 /L.h, 32.36 ± 0.75 ml H 2 /L.H) dan hasil hidrogen (1.22 ± 0.11 mol H 2 /mol gula yang digunakan) oleh nilai purata daripada kajian hanya memperolehi sedikit perbezaan (0.8%, 1.0% dan 8.3%) data perolehan saranan RSM pada keadaan optimum. Model ini telah menyediakan pendekatan yang berguna untuk penghasilan biohidrogen oleh enapcemar mikroflora POME dengan menggunakan karbon aktif berbutir sebagai media sokongan mereka.

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Section: Fesem Imagesmentioning

confidence: 99%

Optimization of Thermophilic Biohydrogen Production by Microflora of Palm Oil Mill Effluent: Cell Attachment on Granular Activated Carbon as Support Media

Jamali

Jahim²

2016

MJAS

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“…Olefins can be produced from natural gas polymerization, steam cracking, or dehydrogenation of hydrocarbon. Previous works on CO 2 conversion into hydrocarbons have been reported in previous works . The combination of more than one active sites on the heterogeneous catalyst responsible for different functionalities contributes to the C2‐C4 formation at a moderate temperature of approximately 300°C.…”

Section: Hydrogenation Mechanismmentioning

confidence: 97%

Clean hydrogen generation and storage strategies via CO ₂ utilization into chemicals and fuels: A review

et al. 2019

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Summary Hydrogen becomes one of the most clean energy sources. The major issues on hydrogen are lack of practical clean and high‐temperature processes and possible practical storage of clean hydrogen. An energy intensive of clean hydrogen storage via chemical and liquid fuel production route is the current demand. This article reviewed the most recent research for hydrogen (H2) production by using several methods, such as thermochemical process, thermal decomposition, biological approaches, electrolysis, and photocatalytic method. H2 storage types, including physical and chemical approaches, were also reviewed. The produced H2 was stored as valuable chemicals and fuels via CO2 hydrogenation reaction. Reactor designs are the illustrated number of design ranging from the fixed bed to the continuous stirred tank reactor. Catalyst type, catalytic system, and the related mechanism of CO2 hydrogenation reaction to form alcohol, alkanes, and carboxylic acid were also discussed in detail.

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“…Many reports have suggested that AC acts as a habitat for microbes and thus promotes their growth. [11][12][13] The direct effects of AC on microbial metabolism have also been reported. Ikegami et al reported that addition of AC to a yeast culture medium causes the acceleration of both yeast growth and ethanol fermentation.…”

Section: Introductionmentioning

confidence: 98%

Promotion of lipopeptide antibiotic production by <i>Bacillus</i> sp. IA in the presence of rice husk biochar

et al. 2019

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The purpose of this study is to isolate the beneficial microorganisms whose growth is promoted in the presence of charcoal materials. We successfully isolated strain IA, whose growth is promoted on an agar plate with charcoal materials, and identified it as a novel strain of the Bacillus sp. The growth of strain IA in the liquid medium was promoted by the addition of both activated charcoal (AC) and rice husk biochar (RHB). Moreover, the sporulation of strain IA in the RHB medium and the antifungal activity of the culture supernatant of the RHB medium were much higher than those with AC. HPLC and MS analyses revealed that strain IA produced an antifungal lipopeptide iturin A, and the yield of iturin A in the RHB medium was 8 times higher than that in the medium without RHB. This is the first paper to describe the positive effect of RHB on microbial metabolisms.

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Biofilm formation on granular activated carbon in xylose and glucose mixture for thermophilic biohydrogen production

Cited by 55 publications

References 56 publications

Optimization of Thermophilic Biohydrogen Production by Microflora of Palm Oil Mill Effluent: Cell Attachment on Granular Activated Carbon as Support Media

Optimization of Thermophilic Biohydrogen Production by Microflora of Palm Oil Mill Effluent: Cell Attachment on Granular Activated Carbon as Support Media

Clean hydrogen generation and storage strategies via CO ₂ utilization into chemicals and fuels: A review

Promotion of lipopeptide antibiotic production by <i>Bacillus</i> sp. IA in the presence of rice husk biochar

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Biofilm formation on granular activated carbon in xylose and glucose mixture for thermophilic biohydrogen production

Cited by 55 publications

References 56 publications

Optimization of Thermophilic Biohydrogen Production by Microflora of Palm Oil Mill Effluent: Cell Attachment on Granular Activated Carbon as Support Media

Optimization of Thermophilic Biohydrogen Production by Microflora of Palm Oil Mill Effluent: Cell Attachment on Granular Activated Carbon as Support Media

Clean hydrogen generation and storage strategies via CO 2 utilization into chemicals and fuels: A review

Promotion of lipopeptide antibiotic production by <i>Bacillus</i> sp. IA in the presence of rice husk biochar

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Clean hydrogen generation and storage strategies via CO ₂ utilization into chemicals and fuels: A review