Potential of Napier grass (Pennisetum purpureum Schumach.) for phytoremediation and biofuel production

Pandey, Vimal Chandra; Patel, Divya; Jasrotia, Shivakshi; Singh, Devendra P.

doi:10.1016/b978-0-12-817732-7.00014-6

Cited by 3 publications

(3 citation statements)

References 63 publications

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“…These plants are especially suitable for energy production by virtue of their low cropping costs, and also of their ability to grow in a variety of environments or even on marginal land [16]. Also, they produce large amounts of biomass [17], use water and nutrients highly efficiently [18,19], contain more cellulose and lignin than deciduous species, and have a relatively low moisture content at the end of their growth cycle [2,20,21]. Even more important, they have the potential for use on marginal land and hence for improving the social and economic status of some rural areas [22].…”

Section: Introductionmentioning

confidence: 99%

“…Its ability to grow on contaminated soils has allowed its cropping in engineered wetlands to exploit its phytoremediating effects and use the resulting biomass for ethanol and butanol production [27]. Among others, elephant grass has additionally been used to reclaim water bodies contaminated with high concentrations of arsenic [21].…”

Section: Introductionmentioning

confidence: 99%

“…Chemical characterization of Elephant grassComponent (%) This work Oluwasina[38] Gomes[32] Pandey[21] Cardona[72] De Conto[49] …”

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confidence: 99%

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Cold alkaline extraction of Elephant grass for optimal subsequent extraction of hemicelluloses and energy production

García

Alfaro

Loaiza

et al. 2022

Biomass Conv. Bioref.

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There is growing scientific and industrial interest in obtaining useful substances by fractionating lignocellulosic biomass from non-food plant crops for use by the bioenergy industry. The primary goals are to ensure process sustainability and to comply with the principles of circular economy. In this work, we optimized energy production from Elephant grass by previously using cold alkaline extraction to remove its hemicellulose fraction. Elephant grass contains a high proportion of lignin (20%) and hemicelluloses (27.4%), and therefore is an excellent alternative to wood materials for energy production by direct burning. Energy production was optimized to identify the best operating conditions among those tested, namely: alkali concentrations of 80–120 g NaOH L–1, temperatures of 20–40 °C, and treatment times of 30–90 min. Using the optimum conditions thus established (viz., 100 g NaOH L–1, 30 °C, and 30 min) raised the high heating value (HHV) to 19.151 MJ kg–1 (i.e., by 4% relative to the starting material). Also, it allowed the content in elemental C to be preserved, that in H increased by 4.86% and, more environmentally significant, most sulphur (46.9%) to be removed from the solid phase upon treatment. Cold alkaline extraction of the raw material additionally enabled relatively selective separation of the hemicellulose fraction from the cellulose and lignin fractions. Thus, 30.1% of all hemicellulose was dissolved in the treatment liquor and made valorizable while 93.0% of cellulose and 82.1% of lignin present in the raw material remained in the solid phase.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Cold alkaline extraction of Elephant grass for optimal subsequent extraction of hemicelluloses and energy production

García

Alfaro

Loaiza

et al. 2022

Biomass Conv. Bioref.

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Integrated poultry waste management by co-digestion with perennial grass: Effects of mixing ratio, pretreatments, reaction temperature, and effluent recycle on biomethanation yield

Phuttaro

Krishnan

Saritpongteeraka

et al. 2023

Biochemical Engineering Journal

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Dynamics in fermentation quality, bacterial community, and metabolic profile during silage fermentation of late-harvested elephant grass

Zhao

Yin

Dong

et al. 2022

Letters in Applied Microbiology

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The present study aimed to evaluate the effects of delayed harvest and storage length on fermentation products, bacterial community, and metabolic shifts of elephant grass silage. The late-harvested elephant grass (LG) was naturally fermented (NLG) for 1, 3, 7, 15, 30, and 60 days, respectively. After 60-day ensiling, NLG displayed homolactic fermentation with low pH value, butyric acid, and ammonia nitrogen concentrations, and high lactic acid concentration, and ratio of lactic acid to acetic acid. Pseudomonas, Sphingomonas, and Pantoea dominated the bacterial community in LG, but Lactobacillus, Lactococcus, and Pediococcus were the advantageous genera in a 3-day and 60-day NLG. The correlation heatmap revealed that Acetobacter was positively related to acetic acid, ethanol, ammonia nitrogen, and butyric acid concentrations. There were distinct differences in the KEGG (Kyoto Encyclopedia of Genes and Genomes) metabolic profiles of fresh and ensiled LG. Ensiling suppressed the metabolism of amino acid, vitamins, and energy, while promoted the metabolism of carbohydrate. The LG can be well-fermented without additives, but its low crude protein content should not be ignored when applied in agricultural practice. The ensiling process remarkably affected the fermentation quality, bacterial community, and metabolic profiles of NLG.

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Potential of Napier grass (Pennisetum purpureum Schumach.) for phytoremediation and biofuel production

Cited by 3 publications

References 63 publications

Cold alkaline extraction of Elephant grass for optimal subsequent extraction of hemicelluloses and energy production

Cold alkaline extraction of Elephant grass for optimal subsequent extraction of hemicelluloses and energy production

Integrated poultry waste management by co-digestion with perennial grass: Effects of mixing ratio, pretreatments, reaction temperature, and effluent recycle on biomethanation yield

Dynamics in fermentation quality, bacterial community, and metabolic profile during silage fermentation of late-harvested elephant grass

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