Impact of nanotechnology on biogas production: A mini-review

Ganzoury, Mohamed A.; Allam, Nageh K.

doi:10.1016/j.rser.2015.05.073

Cited by 154 publications

(50 citation statements)

References 45 publications

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“…propanol at a concentration of 1000 mg/L, 50 mg/L and 0.10 mL/L, respectively were not causing any adverse effects on the AD (Figure 7b). The results are in agreement with previous studies reporting that TiO2 and Ag were not toxic at a concentration of 1500 mg/L 68,69 , which level is higher than the tested conditions. In addition, 2-propanol is a potential substrate for the AD process easily converted to CH4.…”

Section: Concerningsupporting

confidence: 93%

TiO₂–AgCl Based Nanoparticles for Photocatalytic Production of Phenolic Compounds from Lignocellulosic Residues

et al. 2018

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Lignocellulosic biomass residues can be used as an interesting resource for the production of biochemicals or sustainable fuels. In this optic, lignin represents an interesting raw material for the production of chemicals, such as aromatic compounds, or fuels. This can contribute in moving away from petroleum-based industries to bio-based industries. The aim of this study was to investigate the application of a photocatalytic process using a commercial solution composed by TiO2 doped with AgCl for wheat straw valorization. The study investigated the effect of pH and catalyst concentrations for optimal phenolic compounds production. It was found that the photocatalytic treatment boosted the phenolic production from wheat straw. The efficiency of the process depended on the initial pH and catalyst concentration. Process optimization towards increased phenolic compounds production was performed. Catalyst concentration of 1 g/L and a treatment time of 1.56 hours in alkaline conditions resulted in the highest phenolics production. Use of the photocatalytic treated wheat straw for anaerobic digestion (AD) was also evaluated. Results showed that the AD microbiome is strongly inhibited by the presence of toxic compounds presented in the catalyst-straw solution and specifically, HNO3 was toxic to methanogenic communities. Hence, to succeed in an efficient biorefinery framework where total phenols and biogas production are combined, the usage of HNO3 for catalyst synthesis should be avoided.

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Section: Concerningsupporting

confidence: 93%

TiO₂–AgCl Based Nanoparticles for Photocatalytic Production of Phenolic Compounds from Lignocellulosic Residues

et al. 2018

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“…Ganzoury and Allam [57] reviewed the impact of three types of nano-additives on the biogas production. The categories are: (1) metal oxides, (2) zero-valent metals, and (3) nano-ash and carbonbased materials.…”

Section: Effect and Impact Of Nanomaterials On Biomassmentioning

confidence: 99%

Understanding bioenergy production and optimisation at the nanoscale – a review

Rahman

Melville

Huq

et al. 2016

Journal of Experimental Nanoscience

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Nanotechnology has an increasingly large impact on a wide range of biotechnological, pharmacological and pure technological applications. Its current use in bioenergy production from biomass is very limited. This paper examines the potential interrelationships between nanotechnology and bioenergy production through a comprehensive literature review and analysis of data from biomass characterisation studies. The aim of this review is to indicate how nanotechnology can be applied in biomass-tobioenergy conversion. This study shows currently nanotechnology has been applied in the production of only two types of biomass, i.e. sludge and algae. Hence, interaction of nanomaterials with active sludge and algal cells were examined. Our extensive literature review indicates that anaerobic digestion process in sludge can potentially be enhanced by using magnetite nanoparticles, which gives higher methane yields. On the other hand, nanosilver reduces growth and causes adverse effects on the morphology of green algae. This process for bioenergy generation has already been successfully applied to sludge and algae biomass. Our study confirms that the process can also be used in the production of bioenergy from the other biomasses, such as agricultural wastes and industrial residues. Outcomes of this work will be an important tool for implementing nanotechnology in bioenergy research.

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“…The effect of various substances being added to the methane fermentation process has been widely studied. Indeed, a stimulating effect has been noted with the addition of porous materials (biochar, chalk, kaolin), nanoparticles and certain plant specific metabolites (PSM) such as caffeine and saponins (Ganzoury and Allam, 2015;Prabhudessai et al, 2009;Singh et al, 2001;Yadvika et al, 2004). Many PSMs with antioxidant activity are present in biomass, acting as biogas production substrates, but their influence on the methane fermentation process has not yet been fully recognized.…”

Section: Introductionmentioning

confidence: 99%

Antioxidant activity of plant extracts and their effect on methane fermentation in bioreactors

Oleszek¹,

Kozachok²

2018

International Agrophysics

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Extracts of Solidago virgaurea L. (European goldenrod), Lavandula angustifolia Mill. (lavender) and Arnica chamissonis Less. (arnica) were tested as potential additives for methane fermentation in bioreactors, as it was hypothesized that their antioxidant properties may improve biogas production efficiency. Hence, methane fermentation of maize silage with the addition of tested extracts was performed in eudiometers, and both the biogas volume and methane content in biogas were measured. In addition, antioxidant properties, such as reducing power and 1,1-diphenyl-2-picrylhydrazyl free radical-scavenging activity, were determined spectrophotometrically. The results showed that only the addition of a goldenrod crude extract caused a significant increase in biogas yield, despite the fact that it presented the lowest antioxidant activity of the three tested species. No significant differences in biogas yield were found between the other two additives and the control. Biogas production efficiency was not correlated with the antioxidant activity of the crude extracts. Hence, the increase in methane fermentation efficiency in the case of goldenrod supplementation might have resulted from some other non-antioxidant compounds occurring in this species.

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Impact of nanotechnology on biogas production: A mini-review

Cited by 154 publications

References 45 publications

TiO₂–AgCl Based Nanoparticles for Photocatalytic Production of Phenolic Compounds from Lignocellulosic Residues

TiO₂–AgCl Based Nanoparticles for Photocatalytic Production of Phenolic Compounds from Lignocellulosic Residues

Understanding bioenergy production and optimisation at the nanoscale – a review

Antioxidant activity of plant extracts and their effect on methane fermentation in bioreactors

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Impact of nanotechnology on biogas production: A mini-review

Cited by 154 publications

References 45 publications

TiO2–AgCl Based Nanoparticles for Photocatalytic Production of Phenolic Compounds from Lignocellulosic Residues

TiO2–AgCl Based Nanoparticles for Photocatalytic Production of Phenolic Compounds from Lignocellulosic Residues

Understanding bioenergy production and optimisation at the nanoscale – a review

Antioxidant activity of plant extracts and their effect on methane fermentation in bioreactors

Contact Info

Product

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TiO₂–AgCl Based Nanoparticles for Photocatalytic Production of Phenolic Compounds from Lignocellulosic Residues

TiO₂–AgCl Based Nanoparticles for Photocatalytic Production of Phenolic Compounds from Lignocellulosic Residues