Insights into pyrolysis characteristics of Brazilian high-ash sewage sludges using thermogravimetric analysis and bench-scale experiments with GC-MS to evaluate their bioenergy potential

Languer, Mariana Pires; Batistella, Luciane; Alves, José Luiz Francisco; Silva, Jean Constantino Gomes da; Filho, Valdemar Francisco da Silva; Domenico, Michele Di; Moreira, Regina de Fátima Peralta Muniz; José, Humberto Jorge

doi:10.1016/j.biombioe.2020.105614

Cited by 26 publications

(8 citation statements)

References 67 publications

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“…Biomass residues are important in countries such as India, which annually generates 14-23 million metric tons [34]. A recent study of corn there used TGA-DTG to evaluate the kinetics of the pyrolysis of this biomass at three heating speeds (5,10,20 • C/min) in a nitrogen atmosphere (N 2 = 99.99%, flow of 60 mL/min). Kinetic parameters were determined using the Friedman, FWO, KAS, and Starink iso-conversional models.…”

Section: Kinetics Of Lignocellulosic Materialsmentioning

confidence: 99%

“…Designing an efficient conversion unit requires precise data on the kinetics of pyrolytic reactions. Experiments with pyrolysis were carried out at four heating speeds (5,10,20,40 • C/min) from 35-800 • C in a N 2 atmosphere using TGA. The TGA/DTG curves indicated that the three samples degraded principally in a broad temperature range of 350-450 • C, and that degradation increased at higher heating speeds.…”

Section: Kinetics Of Lignocellulosic Materialsmentioning

confidence: 99%

“…The ongoing search for alternative sources using the Earth's natural resources involves a broad scientific community whose goal is to achieve an energy transition based on bioenergy from natural materials that will reduce current harmful environmental impacts [3,4]. The need for sources of bioenergy to replace oil and its derivatives reflects the gradual, inevitable exhaustion of those sources and the serious environmental problems that come with global warming [5]. Hydrogen is deemed an excellent substitute for fossil fuels because its high heating value (HHV, 120 MJ/kg) is three times greater than that of gasoline [6] and because it can be obtained through the electrolysis of water, photolysis, and thermochemical processes using biomass, such as pyrolysis [7].…”

Section: Introductionmentioning

confidence: 99%

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Analysis of Pyrolysis Kinetic Parameters Based on Various Mathematical Models for More than Twenty Different Biomasses: A Review

et al. 2022

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Today, energy use is an important and urgent issue for economic development worldwide. It is expected that raw material in the form of biomass and lignocellulosic residues will become increasingly significant sources of sustainable energy in the future because they contain components such as cellulose, hemicellulose, lignin, and extractables with high energy-producing potential. It is then essential to determine the behavior of these materials during thermal degradation processes, such as pyrolysis (total or partial absence of air/oxygen). Pyrolyzed biomass and its residual fractions can be processed to produce important chemical products, such as hydrogen gas (H2). Thermogravimetric (TGA) analysis and its derivative, DTG, are analytical techniques used to determine weight loss as a function of temperature or time and associate changes with certain degradation and mass conversion processes in order to evaluate kinetic properties. Applying kinetic methods (mathematical models) to degradation processes permits obtaining several useful parameters for predicting the behavior of biomass during pyrolysis. Current differential (Friedman) and integral (Flynn–Wall–Ozawa, Kissinger–Akahira–Sunose, Starink, Popescu) models vary in their range of heating speeds (β) and degree of advance (α), but some (e.g., Kissinger’s) do not consider the behavior of α. This article analyzes the results of numerous kinetic studies using pyrolysis and based on thermogravimetric processes involving over 20 distinct biomasses. The main goal of those studies was to generate products with high added value, such as bio-char, methane, hydrogen, and biodiesel. This broad review identifies models and determines the potential of lignocellulosic materials for generating bioenergy cleanly and sustainably.

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Section: Kinetics Of Lignocellulosic Materialsmentioning

confidence: 99%

Section: Kinetics Of Lignocellulosic Materialsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Analysis of Pyrolysis Kinetic Parameters Based on Various Mathematical Models for More than Twenty Different Biomasses: A Review

et al. 2022

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“…5 Pyrolysis process that is time-saving, easily-operated, and ecofriendly for the efficient disposal of waste biomass, is promising in terms of waste handling and recycling. [6][7][8] Furthermore, pyrolysis requires the lowest total capital cost among the biochemical, gasification, and pyrolysis treatments of lignocellulosic biomass for biofuels production. 9 Hence, the pyrolysis of lignocellulosic biomass into biooil containing various fermentable intermediates is attracting the attention of researchers.…”

Section: Introductionmentioning

confidence: 99%

Conversion efficiency of bioethanol from levoglucosan was improved by the newly engineered Escherichia coli

Chang

Islam

Yang

et al. 2021

Env Prog and Sustain Energy

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Bioethanol produced from waste lignocellulosic biomass is a promising renewable fuel in environmental and sustainable views. The thermochemical process that can readily decompose lignocellulosic biomass to carbohydrate-rich bio-oil is more appealing compared to biochemical process due to its low costs and less time. However, levoglucosan, the dominant carbohydrate present in the bio-oil, is problematic to be efficiently converted to bioethanol by native and recombinant microorganisms.Here, a synthetic metabolic pathway based on the heterologous genes encoding levoglucosan kinase, pyruvate decarboxylase, and alcohol dehydrogenase, was constructed and introduced into Escherichia coli to generate new platforms for ethanol production from levoglucosan. The engineered E. coli strains overexpressing levoglucosan kinase could, for the first time, completely consume 1-2% (wt/vol)

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“…, daf, respectively)52 and of spent coffee grounds(22.93 MJ kg −126 and 22.16 MJ kg −1,53 daf). It was 22-27% higher than that of SD (16.62 and 16.16 MJ kg −1 , daf), indicating the good potential for its use as an alternative energy source, and also as an option for waste disposal offering fuel savings through thermal conversion.…”

mentioning

confidence: 99%

Gaseous emissions from co‐combustion of biosolids from the meat processing industry with wood

Virmond

Albrecht²,

Althoff³

et al. 2021

Env Prog and Sustain Energy

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Flotation sludge from the meat processing industry can be applied as biofuel in already existing plant-scale boilers. This biosolid is rich in oil and grease and has higher energetic content on a dry ash-free basis (22.74 and 27.71 MJ kg −1 ) than the wood-based fuel (16.62 and 16.16 MJ kg −1 ). Co-combustion trials were performed at a pilot-scale cyclonic combustor (100 kg h −1 ) and at an industrial flamotubular rotatory grate-fired system (6000 kg h −1 ), co-firing pre-dried and centrifuged flotation sludges (respectively) and wood at a mass ratio of 1:3. At a moisture content of 60.13 wt%, the lower heating value of the centrifuged sludge was 10.24% lower compared to wood, thus reducing it to at least 40 wt% would be advisable to obtain energy gains in the industrial plant when operating the co-combustion. The emissions were evaluated and compared to emission standards, including the characterization of polycyclic aromatic hydrocarbons and polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (given as Toxicity Equivalent Factors at O 2ref = 7%), which have not yet been reported. The 16 target polycyclic aromatic hydrocarbons were identified at pilot and plant scales (0.582 ± 0.143 μg Nm −3 and 0.602 ± 0.506 μg Nm −3 , respectively) being lower than the Danish reference standard (5.0 μg Nm −3 ). The polychlorinated dibenzop-dioxins and polychlorinated dibenzofurans concentrations were 0.0004 ± 0.0001 ng Nm −3 at pilot scale and 0.3617 ± 0.1310 ng Nm −3 at plant scale, both below the Brazilian and American standards but differed greatly between the scales, requiring further investigation since their formation can occur due to combustion and postcombustion conditions.

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Insights into pyrolysis characteristics of Brazilian high-ash sewage sludges using thermogravimetric analysis and bench-scale experiments with GC-MS to evaluate their bioenergy potential

Cited by 26 publications

References 67 publications

Analysis of Pyrolysis Kinetic Parameters Based on Various Mathematical Models for More than Twenty Different Biomasses: A Review

Analysis of Pyrolysis Kinetic Parameters Based on Various Mathematical Models for More than Twenty Different Biomasses: A Review

Conversion efficiency of bioethanol from levoglucosan was improved by the newly engineered Escherichia coli

Gaseous emissions from co‐combustion of biosolids from the meat processing industry with wood

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