Potential of bioethanol production waste for methane recovery

Rocha‐Meneses, Lisandra; Raud, Merlin; Orupõld, Kaja; Kikas, Timo

doi:10.1016/j.energy.2019.02.073

Cited by 30 publications

(27 citation statements)

References 26 publications

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“…The biomethane yields obtained in this study were improved when compared with the methane yields from samples that have not been through the optimization process [57]. However, further research needs to be done and mass balances should be performed in order to quantify gains from the optimized process.…”

Section: Methane Recoverymentioning

confidence: 83%

“…However, this stage still presents some potential for biomethane production mainly due to cellulose, hemicellulose, enzymes, and yeast left in the broth at the end of the process and that creates additional sources for biogas production. The biomethane yields obtained in this study were improved when compared with the methane yields from samples that have not been through the optimization process [57]. However, further research needs to be done and mass balances should be performed in order to quantify gains from the optimized process.…”

Section: Methane Recoverymentioning

confidence: 83%

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Bioenergy Yields from Sequential Bioethanol and Biomethane Production: An Optimized Process Flow

et al. 2019

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This study investigates the potential of different stages of the bioethanol production process (pretreatment, hydrolysis, and distillation) for bioethanol and biomethane production, and studies the critical steps for the liquid and the solid fractions to be separated and discarded to improve the efficiency of the production chain. For this, Napier grass (a fast-growing grass) from Effurun town of Delta State in Nigeria was used and the novel pretreatment method, nitrogen explosive decompression (NED), was applied at different temperatures. The results show that the lowest glucose (13.7 g/L) and ethanol titers (8.4 g/L) were gained at 150 • C. The highest glucose recovery (31.3 g/L) was obtained at 200 • C and the maximum ethanol production (10.3 g/L) at 170 • C. Methane yields are higher in samples pretreated at lower temperatures. The maximum methane yields were reported in samples from the solid fraction of post-pretreatment (pretreated at 150 • C, 1.13 mol CH4/100 g) and solid fraction of the post-hydrolysis stage (pretreated at 150 • C, 1.00 mol CH4/100 g). The lowest biomethane production was noted in samples from the liquid fraction of post-pretreatment broth (between 0.14 mol CH4/100 g and 0.24 mol CH4/100 g). From the process point of view, samples from liquid fraction of post-pretreatment broth should be separated and discarded from the bioethanol production process, since they do not add value to the production chain. The results suggest that bioethanol and biomethane concentrations are influenced by the pretreatment temperature. Napier grass has potential for bioethanol and further biomethane production and it can be used as an alternative source of energy for the transportation sector in Nigeria and other countries rich in grasses and provide energy security to their population.alternative sources of energy that will decrease the share of fossil fuels utilised in the transportation sector and productive uses, reduce environmental concerns caused by the extensive utilization of these resources (e.g., climate change and global warming), increase energy security, and improve the access of the population to electricity. Renewable energy sources from lignocellulosic biomass have been reported as promising solutions to these problems [4]. Nowadays, biomass itself is responsible for 10% primary energy consumption worldwide [5] and it can be used as a promising feedstock for biofuel production. The sustainability of wastes and by-products as a biofuel for the transportation sector in a circular economy has been studied in the literature, in order to make the biogas-biomethane chain more sustainable [6][7][8]. These studies show the positive impact of biofuels in the transportation section in Europe. However, further research needs to be done in order to apply circular economy models to emerging economies.Sub-Saharan Africa has great potential to develop renewable energy sources, such as wind, biomass, solar, and hydro. Just in Nigeria, the biomass potential is about 144 million tonnes per year and the potenti...

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Section: Methane Recoverymentioning

confidence: 83%

Section: Methane Recoverymentioning

confidence: 83%

Bioenergy Yields from Sequential Bioethanol and Biomethane Production: An Optimized Process Flow

et al. 2019

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“…One measure of the quality of bioethanol is its water content. The lower the water content, the better the quality of the bioethanol [19,77], (Table 1).…”

Section: Fermentationmentioning

confidence: 99%

“…Bio-solvents are solvents that can be produced easily and economically where the production process consists of several stages: hydrolysis, fermentation, and the purification process through distillation [12][13][14][15][16][17][18]. One type of bio-solvent that can be produced from biomass is bioethanol [19][20][21]. The raw materials for bioethanol can be sourced from: (1) biomass starch such as corn, cassava, and sorghum [12]; (2) sugar sources, such as cane crops, sugar cane juice, coconut sap, and gum [22,23]; and (3) source of cellulose including rice husks, bagasse, and corncobs [24,25].…”

Section: Introductionmentioning

confidence: 99%

“…The raw materials for bioethanol can be sourced from: (1) biomass starch such as corn, cassava, and sorghum [12]; (2) sugar sources, such as cane crops, sugar cane juice, coconut sap, and gum [22,23]; and (3) source of cellulose including rice husks, bagasse, and corncobs [24,25]. In general, biomass basically consists of cellulose, hemicellulose, and lignin [19,26,27] which the availability of its raw materials is a great potential to be utilized.…”

Section: Introductionmentioning

confidence: 99%

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Review of Solvents Based on Biomass for Mitigation of Wax Paraffin in Indonesian Oilfield

et al. 2019

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This paper presents a review of the expectations and challenges of using biomass in the prevention and slowing of paraffin wax deposition that takes place during the crude oil production process. The inhibition of the deposition process involves the use of solvents from biomass that are generally available around the crude oil production field. The processes used to scale down the precipitation of wax include mixing crude oil with the manufacturer's solvent composed of toluene and xylene. The goal is to assess solvents sourced from biomass that are capable to slow down the wax deposition process. Wax appearance temperature is an important characteristic to evaluate the possible wax precipitation of a given fluid. Wax precipitation can be reduced by using some chemical additives, often called the pour point depressant. This additive is expected to be produced from local biomass which can compete with solvents currently produced on the market.

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Collection of recyclable wastes within the scope of the Zero Waste project: heterogeneous multi-vehicle routing case in Kirikkale

KIZILTAŞ

Alakaş

Eren

2020

Environ Monit Assess

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Potential of bioethanol production waste for methane recovery

Cited by 30 publications

References 26 publications

Bioenergy Yields from Sequential Bioethanol and Biomethane Production: An Optimized Process Flow

Bioenergy Yields from Sequential Bioethanol and Biomethane Production: An Optimized Process Flow

Review of Solvents Based on Biomass for Mitigation of Wax Paraffin in Indonesian Oilfield

Collection of recyclable wastes within the scope of the Zero Waste project: heterogeneous multi-vehicle routing case in Kirikkale

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