Resin acid markers for total resin acid content of in-mill process lines of a TMP/CTMP pulp mill

Serreqi, Alessio N.

doi:10.1016/s0043-1354(99)00288-2

Cited by 11 publications

(12 citation statements)

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“…The development of a different kind of faster analytical technique has been presented for resin acids in TMP/chemi-thermomechanical pulping (CTMP) process waters (Serreqi et al 2000). GC-FID analysis was used to determine individual and total resin acid content of a series of in-mill process waters, and correlation coefficients of the results were determined.…”

Section: Applications Of the Methodsmentioning

confidence: 99%

“…The most commonly found resin acids in the papermaking process waters are divided into two compound groups: the abietanes (abietic, levopimaric, palustric, and neoabietic acids along with dehydroabietic acid) and the pimaranes (pimaric, isopimaric, and sandaracopimaric acids) (Sjöström 1993;Ekman and Holmbom 2000;Serreqi et al 2000). Due to their chemical structure that comprises a combination of a hydrophobic skeleton and a hydrophilic carboxyl group, they work as good solubilizing agents.…”

Section: Fatty and Resin Acids In Papermakingmentioning

confidence: 99%

“…Voss and Rapsomatiotis (1985), followed by several other studies (Lee et al 1990;Dethlefs and Stan 1996;Serreqi et al 2000;Gutiérrez et al 2001a), used a basic pH to prevent isomerization and binding problems of the resin acid. Several researchers have reported extraction with organic solvents with an acidic pH because this reduced the formation of emulsions, and thus microbial growth during sample storage could be achieved (Ekman and Holmbom 1989;Morales et al 1992;Örså and Holmbom 1994).…”

Section: Analysis Of Extractivesmentioning

confidence: 99%

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Overview of Analytical Procedures for Fatty and Resin Acids in the Papermaking Process

Knuutinen¹,

Alén²

2012

BioResources

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This review describes the role of wood extractives, especially fatty and resin acids, in papermaking, as well as the importance of their removal from process waters. One of the main aims is also to illustrate versatile analysis methods for this purpose and highlight recent developments in corresponding applications. Most of the current methods require timeconsuming and laborious sample pretreatment procedures prior to gas chromatography coupled either with flame ionization or mass selective detection. However, some faster, even online techniques with minimum sample pretreatment, are also available, mainly including high performance liquid chromatography coupled with mass spectrometry. The advantages and disadvantages of all analytical procedures are briefly discussed.

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Section: Applications Of the Methodsmentioning

confidence: 99%

Section: Fatty and Resin Acids In Papermakingmentioning

confidence: 99%

Section: Analysis Of Extractivesmentioning

confidence: 99%

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Overview of Analytical Procedures for Fatty and Resin Acids in the Papermaking Process

Knuutinen¹,

Alén²

2012

BioResources

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“…As a kind of renewable biomass resource, rosin is a crucial forest chemical product [1,2] . However, rosin as a natural resin is used directly, and its additional value needs to be further improved [3] .…”

Section: Introductionmentioning

confidence: 99%

Reaction Mechanism About Isomerization of Resin Acids and Synthesis of Acrylopimaric Acid Based on DFT Calculation

Lai

Jiang

et al. 2021

Preprint

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Acrylopimaric acid is considered one of the possible substitutes for petroleum-based polymeric monomers, which is an important industrial product. Resin acids were isomerized to form levopimaric acid(4), which reacted with acrylic acid to synthesize isomers of acrylopimaric acid. Density functional theory calculation was used to investigate the reaction mechanisms with seven reaction paths in five different solutions. The values of ΔG were sorted from highest to lowest by levopimaric acid(4), neoabietic acid(3), palustric acid(2), and bietic acid(1). From the perspective of dynamics, the energy barrier in the isomerization of palustric acid(2) to levopimaric acid(4) was the lowest, whereas the highest energy barrier was the isomerization of neoabietic acid(3) to levopimaric acid(4) in the same solution. The addition reaction of levopimaric acid(4) and acrylic acid(5) to acrylopimaric acid c(8) was the optimal reaction path dynamically. However, ΔG of acrylopimaric acid c(8) was higher than that of acrylopimaric acid d(9). In general, the rates of isomerization reactions for rosin resin acids and addition reaction for acrylopimaric acid in water were higher than those in other solvents. HOMO-LUMO and ESP were analyzed for 8 kinds of molecules. For acylpyimaric acid, the non-planar six-memed ring and the C-C double bonds were easily attacked by nucleophile, while the non-planar six-memed ring and the carboxyl group are easily reacted with electrophiles. The highest electrostatic potential of the eight molecules is located at H of the carboxyl group, while the highest electrostatic potential is located at C-O double bond of the carboxyl group.

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“…By the accumulation of organic compounds like carbohydrates, increased biological oxygen demand values lead to mucus growth in the system (Hubbe, 2007). The accumulation of sizing and binding agents causes pitch problems and impairs paper properties (Serreqi et al, 2000;Miranda et al, 2008). Additionally, residues of azo dyes are problematic because they are highly visible, while fluorescent stilbene dyes are recalcitrant and toxic to aquatic life (Salas et al, 2019).…”

mentioning

confidence: 99%

Isolation, identification and selection of bacteria with the proof-of-concept for bioaugmentation of whitewater from woodfree paper mills

Verdel¹,

Rijavec

Rybkin

et al. 2020

Preprint

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When whitewater circuits in the paper industry are closed, organic compounds accumulate and cause adverse production problems, such as the formation of slime and pitch. Since wood-free whitewater is usually a mixture of additives for paper production and an efficient cost-effective purification technology for their removal is lacking, the aim of our study was to find an effective bio-based strategy for whitewater treatment using a selection of indigenous bacterial isolates. We first obtained a large collection of bacterial isolates and then tested them individually for their ability to degrade the organic additives used in papermaking, i.e. carbohydrates, resin acids, alkyl ketene dimers, polyvinyl alcohol, latex, and azo and fluorescent dyes. Out of the 355 bacterial isolates, we selected a combination of four strains (Xanthomonadales bacterium sp. CST37-CF, Sphingomonas sp. BLA14-CF, Cellulosimicrobium sp. AKD4-BF and Aeromonas sp. RES19-BTP), which cover the entire spectrum of the tested organic additives. A proof-of-concept study in pilot scale was then performed by immobilizing the cells of our artificial bacterial consortium in a 33-liter tubular flow-through reactor with a retention time of <15 h. The combination of the four native strains enabled an 88% reduction in COD of whitewater even after 21 days. Additionally, we show that the bio-based whitewater treatment surpasses photolysis and photocatalysis.Graphical abstractHighlightsA strategy for selecting a consortium of indigenous bacteria with a high potential for bioaugmentation of wood-free whitewater is presented.Study of bacterial degradation of eight chemically diverse substances used in paper production is presented. Methods for the selection of bacteria suitable for industrial application were developed.The constructed artificial bacterial consortium consisted of strains belonging to genera Xanthomonadales bacterium, Sphingomonas, Aeromonas and Cellulosimicrobium.The proof of concept of the industrial application, consisting of a 33-L-column filled with the immobilized artificial consortium, was an 88% decrease in COD of the whitewater effluent.

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Resin acid markers for total resin acid content of in-mill process lines of a TMP/CTMP pulp mill

Cited by 11 publications

References 4 publications

Overview of Analytical Procedures for Fatty and Resin Acids in the Papermaking Process

Overview of Analytical Procedures for Fatty and Resin Acids in the Papermaking Process

Reaction Mechanism About Isomerization of Resin Acids and Synthesis of Acrylopimaric Acid Based on DFT Calculation

Isolation, identification and selection of bacteria with the proof-of-concept for bioaugmentation of whitewater from woodfree paper mills

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