Peroxymonosulfuric Acid Treatment as an Alternative to Ozone for Totally Chlorine-free and Elementary Chlorine-free Bleaching of Hardwoods Prehydrolysis-kraft Pulp

Rizaluddin, Andri Taufick; Salaghi, Ayyoub; Ohi, Hiroshi; Nakamata, Keiichi

doi:10.2524/jtappij.1601

Cited by 13 publications

(6 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Bark, a by-product of the pulp industry, is a renewable resource at pulp mills, in addition to wood wastes and black liquor [1]. Indonesia is the third largest manufacturer of pulp and paper in Asia, with 84 pulp and paper mills [2]; therefore, the country produces a significant amount of bark by-products. Bark contains a high concentration of tannin; as a result, interest in developing methods for utilizing tannin has recently increased.…”

Section: Introductionmentioning

confidence: 99%

Structural elucidation of condensed tannin from the bark waste of Acacia crassicarpa plantation wood in Indonesia

2017

Self Cite

View full text Add to dashboard Cite

Recently, Acacia crassicarpa has been planted in peatland areas with acidic soil in Indonesia for use in pulp and paper materials. Its bark is not suitable to produce bleached pulp; hence, it is discarded as waste. Meanwhile, in South Africa and other countries, Acacia mearnsii has been planted for a long time, and its bark extracts have been used as a leather tanning agent. First, the structure of condensed tannin from the bark waste of A. crassicarpa is characterized. The yield of the extracts obtained from A. crassicarpa using a 70% acetone aqueous solution (7% based on bark weight) is less than that obtained from A. mearnsii (34%). A novel flavan dimer from the condensed tannin, specific to A. crassicarpa, is isolated from the bark extracts. To the best of our knowledge, this dimer is a new compound as evidenced from pyrolysis-gas chromatography-mass spectrometry and nuclear magnetic resonance analyses; it corresponds to a gallocatechin-catechin flavan dimer with the absence of one oxygen atom at the 3C of the pyran ring. In addition, 2,4,6-trimethoxybenzoic acid methyl ester is identified as a novel pyrolysis product obtained from the cleavage of the pyran ring.

show abstract

Section: Introductionmentioning

confidence: 99%

Structural elucidation of condensed tannin from the bark waste of Acacia crassicarpa plantation wood in Indonesia

2017

Self Cite

View full text Add to dashboard Cite

show abstract

“…There was a tendency of increasing brightness based on increasing AA dosage for cooking (A) for all processes, and the soda cooking showed higher brightness than kraft cooking, except for one point of AA 20％ without SAQ because of high kappa number (23.6) . When brightness was compared at the given kappa number (16)(17)(18)(19)(20) , soda cooking indicated higher brightness (3.8-3.9 points) than the kraft process (B) . A recent study on radiata pine 1) reported that the prehydrolysis process also made cellulose strength vulnerable, but significantly increased the brightness of the pulp.…”

Section: B Amentioning

confidence: 99%

“…A recent study on radiata pine 1) reported that the prehydrolysis process also made cellulose strength vulnerable, but significantly increased the brightness of the pulp. Dissolving pulp needs to be produced in a high-quality range, with high brightness：88％ ISO, a high degree of purity：>94％ α-cellulose, an acceptable level of viscosity： >6.2 mPa•s, and an extremely low ash content：0.15％ 18) . To obtain a final brightness of 88％ ISO for prehydrolysis soda-SAQ pulp, we applied a mild modification to the kappa factor at D 0 stage to 0.29 and other bleaching conditions.…”

Section: B Amentioning

confidence: 99%

Effects of Soluble Anthraquinone Application on Prehydrolysis Soda Cooking of Acacia crassicarpa Wood

et al. 2021

Self Cite

View full text Add to dashboard Cite

Acacia crassicarpa has a potential source as a renewable forest material in Indonesia. This research clarified the conditions to produce dissolving pulp with suitable properties from A. crassicarpa wood by prehydrolysis at 150℃ for 3 h and soda cooking at 160℃ for 3 h with application of 0.1％ soluble anthraquinone (SAQ： 1,4-dihydro-9,10-dihydroxyanthracene sodium salt) . The presence of SAQ in soda cooking exhibited a significant increase in pulp yield (1.8％) compared to kraft cooking at a given kappa number (approximately 11) . The bleaching ability of the soda-SAQ pulp in elemental chlorine-free process with peroxymonosulfuric acid (O-D 0 /P sa -E p -D 1 sequence) was sufficiently good for dissolving pulp properties. The α-cellulose content, brightness, viscosity and ash content were 94.1％, 88.1％ ISO, 10.3 mPa•s, and 0.02％, respectively.

show abstract

“…The rate of delignification was also enhanced during the subsequent kraft cooking process mainly due to improved penetration of the reagents into the raw materials. The wood samples were treated for long prehydrolysis times and with low active alkali dosages compared to the previous conditions 12) to produce final bleached pulp with viscosities above the SNI minimum requirement of 6.2 mPa•s. As shown in Table 1, the wood from E. globulus and A. mearnsii exhibited higher pulp yields (43.2% and 41.1%, respectively) with lower kappa numbers (8.4 and 8.2, respectively) than those of the Japanese mixed hardwoods.…”

Section: Prehydrolysis-kraft Cooking and Pulp Characterizationmentioning

confidence: 99%

“…During TCF bleaching, the levels of discharged organochlorine substances, as adsorbable organic halogen, are reduced. Furthermore, in a previous paper, the prehydrolysis-kraft pulp of a Eucalyptus hybrid (grandis and pellita) wood has been bleached using an oxygen (O) -P sa -alkali extraction with hydrogen peroxide (E p ) -P sa -E p sequence 12) . This sequence resulted in a final pulp viscosity of 6.0 mPa•s, which is below the minimum requirement of the Indonesian National Standard (SNI) ，which specifies a minimum of 6.2 mPa•s 13) .…”

Section: Introductionmentioning

confidence: 99%

Preparation of Dissolving Pulp by Totally Chlorine-free Bleaching：Roles of Hardwood Syringyl and Guaiacyl Lignins

et al. 2018

Self Cite

View full text Add to dashboard Cite

Dissolving pulp was produced from four diff erent hardwoods by prehydrolysis-kraft cooking and totally chlorine-free (TCF) bleaching using oxygen (O) ，peroxymonosulfuric acid (P sa) ，and alkali extraction with hydrogen peroxide (E p) in an O-P sa-E p-P sa-E p sequence. The hardwood lignin structures were characterized by the nitrobenzene oxidation method, which provided syringaldehyde (S a) to vanillin (V a) molar ratios (S/ V ratios) of the lignin. Eucalyptus globulus wood had the highest S/V ratio of 5.81 and a combined yield of S a and V a of 3.04 mmol/g-lignin, while the Acacia hybrid wood exhibited the lowest S/V ratio and the combined yield. The E. globulus wood provided a fi nal pulp with an acceptable level of viscosity 7.0 mPa•s, a weight-average molecular weight (M w) 3.04 × 10 5 g/mol, a number-average molecular weight (M n) 5.56 × 10 4 g/mol, polydispersity (M w /M n) 5.47, a high brightness of 90.1% ISO, and an α-cellulose content of 94.2%. It is attributed to the high S/V ratio and the high combined S a and V a yield, which is suggestive of a less-condensed lignin structure compared to the other hardwoods tested. No signifi cant diff erences in the cellulose crystallinities of the bleached pulp produced from the four hardwoods were observed.

show abstract

Peroxymonosulfuric Acid Treatment as an Alternative to Ozone for Totally Chlorine-free and Elementary Chlorine-free Bleaching of Hardwoods Prehydrolysis-kraft Pulp

Cited by 13 publications

References 13 publications

Structural elucidation of condensed tannin from the bark waste of Acacia crassicarpa plantation wood in Indonesia

Structural elucidation of condensed tannin from the bark waste of Acacia crassicarpa plantation wood in Indonesia

Effects of Soluble Anthraquinone Application on Prehydrolysis Soda Cooking of Acacia crassicarpa Wood

Preparation of Dissolving Pulp by Totally Chlorine-free Bleaching：Roles of Hardwood Syringyl and Guaiacyl Lignins

Contact Info

Product

Resources

About