Pelletizing of Colombian agro-industrial biomasses with crude glycerol

Marrugo, Gloria; Valdés, Carlos F.; Gómez, Carlos

doi:10.1016/j.renene.2018.11.004

Cited by 37 publications

(17 citation statements)

References 29 publications

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“…One of the most frequently investigated feedstocks is rice (Oryza spp.) cultivation residue [63], particularly straw, husk, and chaff. Yang et al [64] analyzed pellets from straw and husks and detected excess chlorine in both types as well as excessive ash in the rice husk pellet.…”

Section: Pure Feedstock For Pellet Productionmentioning

confidence: 99%

Pellet Production from Woody and Non-Woody Feedstocks: A Review on Biomass Quality Evaluation

Picchio

Latterini²,

Venanzi

et al. 2020

Energies

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Forest and agricultural biomass are important sources of renewable and sustainable fuel for energy production. Their increasing consumption is mainly related to the increase in global energy demand and fossil fuel prices but also to the limited availability of petroleum and the lower environmental impact of these biomass compared with other non-renewable fuels. In particular, the pellet sector has seen important developments in terms of both production and the number of installed transformation plants. In addition, pellet production from non-woody biomass is increasing in importance. One of the fundamental aspects for the correct and sustainable use of a biofuel is evaluation of its quality. This is even more important when dealing with pellet production, considering the broad spectrum of possible raw materials for pelletizing. Considering the significant number of papers dealing with pellet quality evaluation and improvement in the last decade, this review aims to give the reader an overall view of the most current knowledge about this large and interesting topic. We focused on pellets of agricultural and forestry origin and analyzed papers regarding the specific topic of pellet quality evaluation and improvement from the last five years (2016–2020). In particular, the review findings are presented in the following order: the influence of different agro-forest management systems on pellet quality; analysis of pellets from pure feedstocks (no blending or binders); the influence of blending and binders on pellet quality; and the influence of pre and post treatments. Finally, a brief discussion about actual research lacks in this topic and the possibilities for future research are presented. It is important to underline that the present review is focused on the influence of the biomass characteristics on pellet quality. The effects of the process parameters (die temperature, applied pressure, holding time) on pellet features are not considered in this review, because that is another very large topic deserving a dedicated paper.

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Section: Pure Feedstock For Pellet Productionmentioning

confidence: 99%

Pellet Production from Woody and Non-Woody Feedstocks: A Review on Biomass Quality Evaluation

Picchio

Latterini²,

Venanzi

et al. 2020

Energies

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“…This variable determines energy density [54]. Energy density changes drastically depending on the composition of the material, briquetting operation conditions, and nature and concentration of additive [4,55]. The use of glycerol, regardless of the level, dropped briquette's energy density.…”

Section: Discussionmentioning

confidence: 99%

Biomass-glycerol briquettes are not necessarily mechanically stable and energetically effective

Moreira

Viana

Moreira

et al. 2020

Waste Dispos. Sustain. Energy

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The re-use of glycerol from biodiesel industry as an alternative lubricant for making high-performance briquettes is usual. However, the technical performance of this agro-industrial residue is not consistent. This study outlines, accordingly, the real risk of introducing glycerol into the co-briquetting of highly caloric by-products of energy-crops. The production of hybrid briquettes consisted of pressing mixtures of residues of sugarcane and sorghum with the liquid additive at 10, 20, and 30 wt.% in bench-scale hydraulic piston presser machine. Irrespective of the blend, briquettes containing the supplement at the highest level as part of their composition ended up being much more hygroscopic (20.10%) and less energetic (3.15 GJ m −3). The explanation for the negative impact of glycerol on the thermomechanical behavior of briquettes would be overconcentration of additive capable of effectively defying compacting biomass. The degree of compaction during co-briquetting has likely gone down quickly with a maximizing level of glycerol. As long as the additive is not able to lubricate the feedstock suitably, improbability of biomass particles to successfully bond together to form themselves into mechanically stable and energetically effective briquettes is large. Besides lower density (273.80 kg m −3) and higher relaxation (22.75%), briquettes with glycerol at 30 wt.% generally were aesthetically unpleasing. Practically, these products resisted no longer to handling, transportation, and storage. They lost their shape easily during emptying and shifting them, thus, releasing larger quantities of biomass to the environment. Preliminary evidence of high-viscosity glycerol capable of limiting safe and effective production of high-performance briquettes for heating and power exists.

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“…During this process, solid particles, with or without binders, are bonded to each other by attracting forces, diffusion of molecules or ingredient crystallization. In this way, a hardened commodity with higher density, improved durability and improved combustion properties is produced [11,19,22,23,[31][32][33][34][35][36]. Although there are many works that demonstrate the suitability of different lignocellulosic materials for solid biomass fuels manufacturing [12,[37][38][39][40][41], there is a lack of knowledge about the potential of CFP with boron salts as an energy source.…”

Section: Introductionmentioning

confidence: 99%

Valorization of Insulation Cellulose Waste as Solid Biomass Fuel

et al. 2021

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This paper investigates the ability of insulation cellulose fiber powder (CFP) to be pelletized for its valorization as biomass fuel. CFP is a waste originating from insulation cellulose manufacturing that lacks any method of valorization because of its boron salts content. A sugar byproduct and lignosulfonate (LS) were considered as binders for the pellet manufacturing process. Physical tests were carried out to characterize the pellets’ performance. Chemical and combustion tests were considered to state the pellets’ potential as a green energy source. Raw CFP showed good ability in its pelletization and durability in the range of 15–30% of moisture content. The pellet’s density decreased as water content increased. Binders increased the pellet’s length before and after the durability test. Binders also increased the CFP pellet’s water absorption, demonstrating a potential decrease in durability against environmental factors. Binders also decreased the lower heating value. Ultimate analysis showed a slight Nitrogen increase in both binder combinations that could potentially raise the pollutant NOx combustion emissions. All the combinations showed adequate combustion characteristics, but binders increased ash production. Additives decreased the CFP volatile matter content and increased the fixed carbon, which could facilitate a more stable combustion. DTA curves showed a mass loss rate decrease in the volatile stage for the binder combinations, which also could be considered as an indicator of a more stable combustion. The ashes’ chemical compositions when analyzed by XPS showed boron contents oscillating between 10.03% and 16.42%, demonstrating the possibility of recovering them from the combustion ashes.

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Pelletizing of Colombian agro-industrial biomasses with crude glycerol

Cited by 37 publications

References 29 publications

Pellet Production from Woody and Non-Woody Feedstocks: A Review on Biomass Quality Evaluation

Pellet Production from Woody and Non-Woody Feedstocks: A Review on Biomass Quality Evaluation

Biomass-glycerol briquettes are not necessarily mechanically stable and energetically effective

Valorization of Insulation Cellulose Waste as Solid Biomass Fuel

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