Enhancement of Solubility and Biohydrogen Production from Sewage Sludge with Lime Mud Filtrate

Zhang, Jishi; Chen, Yao; Fan, Chuanfang

doi:10.1007/s11270-018-3779-0

Cited by 10 publications

(4 citation statements)

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“…Completely stirred bioreactors have often been used for operating systems larger than these bioreactor types. For simple operation and effective control, batch reactors have been used [ 8 , 12 , 13 ]. Hydraulic retention time (HRT) : It is one of the significant reactor check parameters that is affected by the biohydrogen manufacturing rate and operations in bioreactors [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

Biohydrogen Production from Waste Black Cumin (Nigella Sativa) Extract Liquid

Dursun,

Gülşen

2024

Bioengineering

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Hydrogen creates water during combustion. Therefore, it is expected to be the most promising environmentally friendly energy alternative in the coming years. This study used extract liquid obtained from the waste nigella sativa generated by the black cumin oil industry. The performance of biological hydrogen manufacturing via dark fermentation was investigated in the fluidized bed reactor (FBR) and completely stirred tank reactor (CSTR) under the operation conditions of pH 5.0, 4.0, and 6.0 and a hydraulic retention time (HRT) of 36 and 24 h. The performance of hydrogen manufacturing was determined to be good under an organic loading ratio (OLR) of 6.66 g.nigella sativa extract/L and pH 4.0. According to these conditions, the maximum amount of hydrogen in CSTR and FBR was found to be 20.8 and 7.6 mL H2/day, respectively. The operating process of the reactors displayed that a reduction in HRT augmented biohydrogen manufacturing. The work that used mixed culture found that the dominant microbial population at pH 4.0 involved Hydrogenimonas thermophila, Sulfurospirillum carboxydovorans, Sulfurospirillum cavolei, Sulfurospirillum alkalitolerans, and Thiofractor thiocaminus. No research on waste black cumin extract was found in biohydrogen studies, and it was determined that this substrate source is applicable for biological hydrogen manufacturing.

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Section: Introductionmentioning

confidence: 99%

Biohydrogen Production from Waste Black Cumin (Nigella Sativa) Extract Liquid

Dursun,

Gülşen

2024

Bioengineering

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“…Considering the cleanliness and sustainability of H 2 consumption, H 2 yield and storage technology have received widespread attention. 4 H 2 can be produced by electrolysis of water, photosynthetic H 2 evolution, industrial by-product reforming, and biofermentation. 5 The sophisticated types of equipment and high capital investment that are required for the previous three methods limited the possibility of industrial application.…”

Section: Introductionmentioning

confidence: 99%

“…Considering the cleanliness and sustainability of H 2 consumption, H 2 yield and storage technology have received widespread attention. 4 …”

Section: Introductionmentioning

confidence: 99%

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Nickel–Cobalt Oxide Nanoparticle-Induced Biohydrogen Production

Wang²,

Tian

et al. 2022

ACS Omega

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The positive effects of metal oxide nanoparticles (NPs) on dark fermentation (DF) for biohydrogen synthesis have been increased, and the mechanism still needs to be further revealed. In this study, nickel–cobalt oxide (NiCo2O4) NPs were prepared to increase H2 yield via DF. The highest (259.67 mL/g glucose) and the lowest (188.14 mL/g glucose) yields were achieved at 400 and 800 mg/L NiCo2O4 NPs added, respectively, with their corresponding 33.97% increase and 2.93% decrease compared with the control yield (193.82 mL/g glucose). Meanwhile, the microbial community further confirmed that NiCo2O4 NPs increased the abundance of the dominant H2-producing Clostridium sensu stricto 1 by 23.05%. The gene prediction also showed that NiCo2O4 NPs increased the abundance of genes encoding the rate-limiting enzyme pyruvate kinase in glycolysis, thus increasing the substrate conversion. Moreover, the gene abundance of key enzymes directly related to H2 evolution was also increased at different levels.

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