Conversion of green algal biomass into bioenergy by pyrolysis. A review

Aravind, S.; Kumar, Pradeep; Kumar, Nikhil S.; Siddarth, N.

doi:10.1007/s10311-020-00990-2

Cited by 115 publications

(33 citation statements)

References 135 publications

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“…Among the different biomass processing technologies for energy purposes, pyrolysis is noteworthy, which is characterized by the thermal decomposition of organic materials in the absence of oxygen producing a solid fraction (biochar), noncondensable gases and condensable liquids (biooil), which are precursor to chemicals, fertilizers, liquid fuels and hydrogen (VALLE et al, 2019;CAMPUZANO et al, 2019;TAHIR et al, 2019;HUANG et al, 2019;ARAVIND et al, 2020).…”

Section: Forestry Sciencementioning

confidence: 99%

Pachira aquatica fruits shells valorization: renewables phenolics through analytical pyrolysis study (Py-GC/MS)

et al. 2022

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This research valorized Pachira aquatica Aubl.’s fruit shells (PAS) through its energetic characterization and flash pyrolysis for biofuels or chemicals production. The characterization was performed through proximate and ultimate analysis, bulk density, higher heating value (HHV), hemicellulose, cellulose and lignin content, thermogravimetric analysis and absorption spectra in the infrared region obtained by Fourier-transform infrared spectroscopy technique (FTIR). The analytical flash pyrolysis was performed at 500°C in a Py-5200 HP-R coupled to a gas chromatograph (Py-GC/MS). The PAS biomass presents potential for thermochemical energy conversion processes due to its low moisture and ash content, 76.90% of volatile matter, bulk density of 252.6 kg/m3 and HHV of 16.24 MJ/kg. Flash pyrolysis products are mostly phenols or light organic acids derived from the decomposition of polysaccharides. Results confirmed the potential of PAS to produce bio-phenolics, such as 4-methoxyphenol which is an important active ingredient for skin depigmentation used in drugs and cosmetics, and as phenolic extract that can be used as a precursor to resins, applications that convert this forest waste into bio products for industry into a green circular economy.

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Section: Forestry Sciencementioning

confidence: 99%

Pachira aquatica fruits shells valorization: renewables phenolics through analytical pyrolysis study (Py-GC/MS)

et al. 2022

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“…An important aspect that should be taken into consideration for biorefinery is the amount in which valuable biomolecules can be found in cultivated macroalgae that can differ from those identified in wild species. In order to successfully produce macroalgal biomass, certain conditions must be taken into consideration: lighting, nutrients, water depth, turbidity and temperature (Aravind et al 2020). When selecting a specific seaweed for cultivation and valorization in a biorefinery system, its chemical composition and stability should therefore be taken into consideration as it can significantly influence the production yields (Skjermo et al 2014).…”

Section: Wild and Cultivated Marine Macroalgae Resources For Biorefinerymentioning

confidence: 99%

Biorefinery of marine macroalgae into high-tech bioproducts: a review

et al. 2020

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Pollution and climate change induced by fossil fuel usage are calling for the development of a circular bioeconomy based on carbon neutral resources such as marine macroalgae, also named seaweeds. Macroalgal biomass can generate biofuels and valuable bioproducts such as hydrocolloids and other unique biomolecules. Biorefinery of marine macroalgae involves a minimum use of energy and chemicals, and low waste generation, as demonstrated in recent laboratory-scale studies. Here, we review biorefinery of marine macroalgae with focus on non-energy bioproducts and advances in the separation of biomolecules. We found that metabolites with bioactive properties are in high demand for food, cosmetic, medicine and pharmaceutical industries. These metabolites can be obtained together with energy products to improve macroalgae valorization. Emerging extraction methods facilitate the generation of more qualitative bioproducts in higher yields with less energy.

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“…Consequently, applying microwaves causes reducing in the equipment size and processing time. Therefore, microwave heating is now not only applied for industrial wood drying, food processing, and rubber vulcanization, but also studied in various areas, such as, ceramic and polymer processing (Komarneni et al 1992;Hoogenboom and Schubert 2007;Wiesbrock et al 2004), environmental applications (Jones et al 2002a, b;Verma and Samanta 2018;Zhang and Hayward 2006;Zlotorzynski 1995), biofuels and chemical productions (Aravind et al 2020;Hassan et al 2020), and metallurgy and mineral processing (Jones et al 2002a, b;Kingman et al 2004). Particularly, there is an increasing interest in the study of heterogeneous gas-phase catalysis under microwave heating (Zhang and Hayward 2006;Durka et al 2009), such as NH 3 decomposition (Guler et al 2017), CH 4 decomposition (Domínguez et al 2007a, b;Zhang et al 2003), H 2 S decomposition (Xu et al 2017a, b), NO x and SO 2 reduction (Peng et al 2017;Zhang et al 2001), CO 2 reforming of CH 4 (Fidalgo and Menéndez 2013;Lim and Chun 2017;Zhang et al 2003) and recently steam reforming of alcohols (Durka et al 2011;Gündüz and Dogu 2015;Sarıyer et al 2019).…”

Section: Principles Of Microwave Heatingmentioning

confidence: 99%

Microwave-assisted dry reforming of methane for syngas production: a review

Pham

Ro²,

Chen

et al. 2020

Environ Chem Lett

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Abatement of emissions of greenhouse gases such as methane and carbon dioxide is crucial to reduce global warming. For that, dry reforming of methane allows to convert methane and carbon dioxide into useful synthesis gas, named 'syngas', a gas mixture rich in hydrogen and carbon monoxide. However, this process requires high temperatures of about 900 °C to activate methane and carbon dioxide because dry reforming of methane reaction is highly endothermic. Therefore, a solid catalyst with appropriate thermal properties is needed for the reaction. As a consequence, efficient heating of the reactor is required to control heat transfer and optimize energy consumption. Microwave-assisted dry reforming of methane thus appears as a promising alternative to conventional heating. Here we review the recent research on microwave-assisted dry reforming of methane. We present thermodynamical aspects of the dry reforming of methane, and basics of microwave heating and apparatus. We analyse reformers that use microwave heating. Catalysts used in a microwave-assisted reformer are presented and compared with reactors using conventional heating. Finally, the energy balance is discussed.

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Conversion of green algal biomass into bioenergy by pyrolysis. A review

Cited by 115 publications

References 135 publications

Pachira aquatica fruits shells valorization: renewables phenolics through analytical pyrolysis study (Py-GC/MS)

Pachira aquatica fruits shells valorization: renewables phenolics through analytical pyrolysis study (Py-GC/MS)

Biorefinery of marine macroalgae into high-tech bioproducts: a review

Microwave-assisted dry reforming of methane for syngas production: a review

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