The generation of residual biomass during the production of bio-ethanol from sugarcane, its characterization and its use in energy production

Bizzo, Waldir Antônio; Lenço, Paulo César; Carvalho, Danilo José; Veiga, João Paulo Soto

doi:10.1016/j.rser.2013.08.056

Cited by 103 publications

(48 citation statements)

References 24 publications

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“…The fiber content depends on the length and diameter of the stalks, and the number of nodes and distance between nodes. The main elements are silica, potassium, calcium, magnesium, and phosphorus [19].…”

Section: Charachterization Of Scbmentioning

confidence: 99%

Sugarcane Bagasse as an Efficient Biosorbent for Methylene Blue Removal: Kinetics, Isotherms and Thermodynamics

Siqueira

Silva

Rúbio

et al. 2020

IJERPH

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Adsorption in biomass has proven to be a cost-effective option for treatment of wastewater containing dyes and other pollutants, as it is a simple and low cost technique and does not require high initial investments. The present work aimed to study the adsorption of methylene blue dye (MB) using sugarcane bagasse (SCB). The biomass was characterized by scanning electron microscopy (SEM). Adsorption studies were conducted batchwise. Kinetics, adsorption isotherms, and thermodynamics were studied. The results showed that SCB presented a maximum adsorption capacity of 9.41 mg g−1 at 45 °C after 24 h of contact time. Adsorption kinetics data better fitted the pseudo-second order model, indicating a chemical process was involved. The Sips’s three-parameter isotherm model was better for adjusting the data obtained for the adsorption isotherms, indicating a heterogeneous adsorption process. The process showed to be endothermic, spontaneous, and feasible. Therefore, it was concluded that SCB presented as a potential biosorbent material for the treatment of MB-contaminated waters.

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Section: Charachterization Of Scbmentioning

confidence: 99%

Sugarcane Bagasse as an Efficient Biosorbent for Methylene Blue Removal: Kinetics, Isotherms and Thermodynamics

Siqueira

Silva

Rúbio

et al. 2020

IJERPH

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“…The current experience with straw use as fuel has shown that problems like slagging, fouling and surface corrosion are common when the straw share is above 15-20% in the fuel blend (mass basis). These problems are due to biomass and their ash compositions, which have much more chlorine, CaO and K 2 O in the case of straw compared to bagasse [13]. As it is predicted that in the considered case straw would represent about one third of the fuel input, the hypothesis is that the problems mentioned would be solved in the future.…”

Section: Cogeneration Plantmentioning

confidence: 98%

Techno-Economic Assessment of Bio-Energy with Carbon Capture and Storage Systems in a Typical Sugarcane Mill in Brazil

Restrepo-Valencia

Walter

2019

Energies

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For significantly reducing greenhouse gas emissions, those from electricity generation should be negative by the end of the century. In this sense, bio-energy with carbon capture and storage (BECCS) technology in sugarcane mills could be crucial. This paper presents a technical and economic assessment of BECCS systems in a typical Brazilian sugarcane mill, considering the adoption of advanced—although commercial—steam cogeneration systems. The technical results are based on computational simulations, considering CO2 capture both from fermentation (released during ethanol production) and due to biomass combustion. The post combustion capture technology based on amine was considered integrated to the mill and to the cogeneration system. A range of energy requirements and costs were taken from the literature, and different milling capacities and capturing rates were considered. Results show that CO2 capture from both flows is technically feasible. Capturing CO2 from fermentation is the alternative that should be prioritized as energy requirements for capturing from combustion are meaningful, with high impacts on surplus electricity. In the reference case, the cost of avoided CO2 emissions was estimated at 62 €/t CO2, and this can be reduced to 59 €/t CO2 in case of more efficient technologies, or even to 48 €/t CO2 in case of larger plants.

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“…The configuration chosen for this industrial facility (electrified mills, three boilers with high pressure, two backpressure turbines, and one extraction-condensing turbine) would probably be found on a sugarcane mill that is already looking at increasing its electricity output [32]. The steam demand of the sugarcane mill is of around 500 kg of steam per tonne of sugarcane processed and the method of ethanol dehydration is azeotropic distillation, considered according to the typical consumption of steam practiced in a conventional mill [33]. No additional recovery of straw takes place; thus, only vegetable impurities-sugarcane tops and leaves that could not be separated by the harvester-are sent to the industrial facility along with sugarcane stalks.…”

Section: Scenario Definitionmentioning

confidence: 99%

Electricity Production from Sugarcane Straw Recovered Through Bale System: Assessment of Retrofit Projects

et al. 2019

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Sugarcane straw has become available in large quantities in the field due to transition from manual to mechanical harvesting. Straw can be used as fuel for cogeneration systems of sugarcane mills to increase surplus electricity for commercialization. However, the exploitation of straw potential is still limited due to some challenges related to its agricultural recovery and industrial processing. The retrofit (additional installation) of existing sugarcane mills to process straw is an alternative to reduce investment and to allow a gradual utilization of this biomass. In this work, techno-economic and environmental assessment of straw recovery through bale system to increase electricity export was assessed. Two scenarios with straw recovery and processing were defined to take advantage of an existing cogeneration system, considering its operation in the season and off-season periods. An increase of up to 57% on surplus electricity was achieved. Both scenarios resulted in economically feasible alternatives. However, results were very sensitive to the variations on electricity prices and straw costs. In terms of environmental benefits, the bioelectricity presented a great potential to mitigate greenhouse gas emissions compared with natural gas-based electricity. The higher electricity surplus also affects the carbon intensity of ethanol, which can lead to indirect gains when the Brazilian program for biofuels incentive is implemented.

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The generation of residual biomass during the production of bio-ethanol from sugarcane, its characterization and its use in energy production

Cited by 103 publications

References 24 publications

Sugarcane Bagasse as an Efficient Biosorbent for Methylene Blue Removal: Kinetics, Isotherms and Thermodynamics

Sugarcane Bagasse as an Efficient Biosorbent for Methylene Blue Removal: Kinetics, Isotherms and Thermodynamics

Techno-Economic Assessment of Bio-Energy with Carbon Capture and Storage Systems in a Typical Sugarcane Mill in Brazil

Electricity Production from Sugarcane Straw Recovered Through Bale System: Assessment of Retrofit Projects

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