Evidence map›Paper›PMID 38969829›Full record

ArticleScientific reports2024

Comparison of thermal, rheological properties of Finnish Pinus sp. and Brazilian Eucalyptus sp. black liquors and their impact on recovery units.

Jesús Nuncira, Getúlio Francisco Manoel, Larisse Ap Ribas Batalha, Lindomar Matias Gonçalves, Clara Mendoza-Martinez, Marcelo Cardoso, Esa K Vakkilainen

Abstract readComparative Study
PubMed Full text at PMC Publisher
In one paragraph

Article in Scientific reports, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

1 citing paper in PubMed.

  1. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Jesús NunciraLUT University, Yliopistonkatu 34, 53850, Lappeenranta, Finland.
Getúlio Francisco ManoelPontifical Catholic University of Minas Gerais (PUC Minas), Belo Horizonte, MG, 30535-000, Brazil.
Larisse Ap Ribas BatalhaFederal Rural University of Rio de Janeiro (UFRRJ), Seropédica, RJ, 23890-000, Brazil.
Lindomar Matias GonçalvesInstitute of Pure and Applied Sciences, Federal University of Itajubá (UNIFEI), Rua Irmã Ivone Drumond, 200 - Industrial District II, Itabira, MG, 35903-087, Brazil.
Clara Mendoza-MartinezLUT University, Yliopistonkatu 34, 53850, Lappeenranta, Finland. clara.mendoza.martinez@lut.fi.
Marcelo CardosoFederal University of Minas Gerais (UFMG), Belo Horizonte, MG, 31270-901, Brazil.
Esa K VakkilainenLUT University, Yliopistonkatu 34, 53850, Lappeenranta, Finland.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Black liquor (BL) is the major bioproduct and biomass fuel in pulp mill processes. However, the high viscosity of BL makes it a challenging material to work with, resulting in issues with evaporators and heat exchangers during its transport and processing. The thermal and rheological properties of BLs from Pinus sp. (PBL) and Eucalyptus sp. (EBL) were studied. FTIR spectra revealed the presence of the characteristic functional groups and the chemical composition in liquors. TGA/DTG curves showed three characteristic degradation stages related to evaporation of water, pyrolysis of organic groups, and condensation of char. Rheologically, liquors are classified as non-Newtonian and with comportment pseudoplastic. Their rheological dynamic shear properties included a linear viscoelastic region up to 1% shear strain, while frequency sweeps showed that storage modulus (G') > loss modulus (G''), thus confirming the solid-like behavior of both BLs. The rheological study demonstrated that increasing the temperature and oscillatory deformations of PBL and EBL decreased their degree of viscoelasticity, which could favor their pumping and handling within the pulp mill, as well as the droplet formation and swelling characteristics in the recovery furnace.

Indexed as

EucalyptusPinusRheologyBrazilFinlandSpectroscopy, Fourier Transform InfraredTemperatureViscosityApparent viscosityDynamic shear propertiesPinus sp. and Eucalyptus sp. black liquorsRecovery boilerThermal properties

Identifiers

PMID38969829
PMCPMC11226715

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.