Optimization of hydrogen production from organic fraction of municipal solid waste (OFMSW) dry anaerobic digestion with analysis of microbial community

Elsamadony, Mohamed; Tawfik, Ahmed; Danial, Amal W.; Suzuki, Masaaki

doi:10.1002/er.3297

Cited by 42 publications

(14 citation statements)

References 53 publications

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“…These findings were in good agreement with the cell dry weight reported by Pakpour et al [37], since the exergy and eco-exergy of the microorganisms are directly proportional to the cell weight according to the Eqs. (16) and (20). Obviously, the exergy and eco-exergy values of microorganisms increased logarithmically with time and reached plateau at around 48e60 h and remained unchanged afterwards till the end of the experiment (120 h).…”

Section: Resultsmentioning

confidence: 93%

Thermodynamic evaluation of a photobioreactor for hydrogen production from syngas via a locally isolated Rhodopseudomonas palustris PT

Hosseini

Aghbashlo

Tabatabaei

et al. 2015

International Journal of Hydrogen Energy

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Section: Resultsmentioning

confidence: 93%

Thermodynamic evaluation of a photobioreactor for hydrogen production from syngas via a locally isolated Rhodopseudomonas palustris PT

Hosseini

Aghbashlo

Tabatabaei

et al. 2015

International Journal of Hydrogen Energy

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“…On the other hand, HPr at the two reactors demonstrated an increase from 23.0 ± 5.1 (ABR 1 ) and 9.4 ± 1.1 (ABR 2 ) mg/L at OLR of 0.8 g COD /L/day to 77.4 ± 6.2 and 31.5 ± 4.2 mg/L at OLR of 4.8 g COD /L/day, respectively. Whereas, stress condition such as high OLR flourished propionate‐producing bacteria . However, HPr concentrations at ABR 2 with MNP supplementation witnessed lower values compared with classical ABR 1 .…”

Section: Resultsmentioning

confidence: 96%

Upgrading continuous H₂gas recovery from rice straw hydrolysate via fermentation process amended with magnetite nanoparticles

et al. 2019

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Summary Continuous H2 production from alkali‐hydrolyzed rice straw in two mesophillic anaerobic baffled reactors (ABRs) was investigated in parallel. ABR1 was inoculated with thermally pretreated sludge while the sludge in ABR2 was amended with magnetite nanoparticles (MNPs). Both reactors were operated at organic loading rates (OLRs) ranged from 0.8 to 4.8 gCOD/L/day. The addition of MNPs significantly improved the H2 production and yield, ie, maximum H2 yield was 21.4 ± 3.2 and 60.6 ± 5.7 mL/g CODremoved for both ABR1 and ABR2, respectively, at OLR of 1.6 gCOD/L/day. Likewise, substrate degradation efficiency (SDE) was augmented from 48.4 ± 3.9% (ABR1) to 55.8 ± 4.2% (ABR2). The enhancement effect of MNPs can be emphasized by hydrogenase enzyme activity increase from 0.097 ± 0.013 to 0.205 ± 0.019 mg MBreduced/min at ABR1 and ABR2, respectively. Besides, ABR2 witnessed higher concentrations of acetate (HAc) and butyrate (HBu) coupled with lower values of propionate (HPr). Additionally, HAc/HBu ratio for ABR2 (3.03 ± 0.31) was higher than that for ABR1 (1.95 ± 0.29). Microbial analysis indicated that Bacillus and Clostridium species became dominant in mixed culture bacteria supplemented with MNPs. Furthermore, economic analysis revealed that the minimum payback period of 10.5 years at OLR of 3.2 gCOD/L/day was recorded for ABR2 compared with 14.6 years at OLR of 4.8 gCOD/L/day for ABR1.

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“…Carbon dioxide and other less‐reduced organic compounds are also produced by hydrogen‐producing microorganisms, which directly affect the hydrogen productivity and yield. To make hydrogen production through dark fermentation profitable in large‐scale applications, several studies have applied new cost reduction strategies, for example, the utilization of organic‐rich wastes (as feedstock) and mixed cultures (as inoculum) in the process and the optimization of the main process variables …”

Section: Introductionmentioning

confidence: 99%

Biohydrogen production from pretreated sludge and synthetic and real biodiesel wastewater by dark fermentation

García

Cammarota

2019

Int J Energy Res

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Summary Different types of sludge pretreatments were tested, with thermal shock at 90°C to 95°C for 60 minutes plus a 6‐hour rest period achieving the best results for inhibition of methanogen microorganisms and inoculum enrichment with H2‐producing bacteria, which produced a H2‐rich biogas (up to 65% mol/mol) without the presence of CH4. Wastewater from biodiesel production (WBP), containing mainly methanol (128 g/L) and glycerol (4 g/L), was evaluated as a potential substrate to produce H2 through dark fermentation. Both methanol‐based solutions and methanol‐rich wastewater were not suitable for hydrogen production; however, these effluents showed a strong potential for CH4‐rich biogas production. A fractional factorial design was employed to evaluate the effect of six substrate‐related variables (glycerol content, 25% and 75%; COD content, 4 and 50 g/L, COD:VSS ratio, 1:1 and 5:1; COD:N:P ratio, 350:0:0 and 350:5:1; NaCl content, 0.5 and 12.0 g/L; and pH, 4.0 and 5.5) on the H2 production from glycerol‐methanol–based synthetic solutions (synthetic WBP). Some substrate‐related variables had a crucial impact on the hydrogen production potential from WBP, which was significantly affected by the COD and salinity content in the substrate. WBP containing high glycerol (representing until 75% of the COD) and salinity (up to 12 g/L as NaCl) content could be turned into a potential substrate for H2 production through dark fermentation as long as specific fermentation conditions are maintained, such as pH 5.5 to 5.7 and a substrate COD content up to 50 g/L. Using this condition, glycerol conversion, H2 productivity, and H2 yield of 81.3 ± 8.9%, 102.8 ± 18.2 mL H2/L.d, and 24.5 ± 4.4 mL H2/g CODapplied, respectively, were obtained.

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Optimization of hydrogen production from organic fraction of municipal solid waste (OFMSW) dry anaerobic digestion with analysis of microbial community

Cited by 42 publications

References 53 publications

Thermodynamic evaluation of a photobioreactor for hydrogen production from syngas via a locally isolated Rhodopseudomonas palustris PT

Thermodynamic evaluation of a photobioreactor for hydrogen production from syngas via a locally isolated Rhodopseudomonas palustris PT

Upgrading continuous H₂gas recovery from rice straw hydrolysate via fermentation process amended with magnetite nanoparticles

Biohydrogen production from pretreated sludge and synthetic and real biodiesel wastewater by dark fermentation

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Optimization of hydrogen production from organic fraction of municipal solid waste (OFMSW) dry anaerobic digestion with analysis of microbial community

Cited by 42 publications

References 53 publications

Thermodynamic evaluation of a photobioreactor for hydrogen production from syngas via a locally isolated Rhodopseudomonas palustris PT

Thermodynamic evaluation of a photobioreactor for hydrogen production from syngas via a locally isolated Rhodopseudomonas palustris PT

Upgrading continuous H2gas recovery from rice straw hydrolysate via fermentation process amended with magnetite nanoparticles

Biohydrogen production from pretreated sludge and synthetic and real biodiesel wastewater by dark fermentation

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Product

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Upgrading continuous H₂gas recovery from rice straw hydrolysate via fermentation process amended with magnetite nanoparticles