The Effects of Sodium Percarbonate and Perborate Usage on Pulping and Flotation Deinking Instead of Hydrogen Peroxide

Peşman, Emrah; İmamoğlu, Sami; Kalyoncu, Evren Ersoy; Kırcı, Hüseyin

doi:10.15376/biores.9.1.523-536

Cited by 10 publications

(10 citation statements)

References 3 publications

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“…This chlorine was rapidly reduced to chloride by H 2 O 2 under more severe conditions (6%), in which HCl was actually a deactivator. As for sodium perborate, it has been demonstrated to be a more powerful bleaching agent than peroxide as long as high temperatures (70-80ºC) are used (Pesman et al, 2014). However, possibly due to its low concentration, additions of SPB did not give out a consistent increase of brightness.…”

Section: Carbohydrate Extractions and Effects On Paper Propertiesmentioning

confidence: 99%

Valorization of Seaweed: Using Brown Algae Waste in Papermaking

Moral

Aguado

Amaya

et al. 2021

Preprint

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In this work, the brown alga Dictyota dichotoma was explored as a new reinforcing material for papermaking. Performing the typical chemical tests for cellulosic substrates on D. dichotoma evidenced large amounts of ethanol:benzene extractable substances (7.2%) and ashes, algae-specific results. Also, even if lipophilic compounds are removed, brown seaweed are not a primary source of fibers because it contains low proportion of cellulose. However, its elevated content of insoluble carbohydrates (51.4%) suggest there is some potential in association with conventional cellulosic pulps, as fibrous elements contribute to sheet forming and other components fill the spaces in the paper web without noteworthy loss of strength. Extraction was carried out with clean processes: hydrogen peroxide and mixtures (hydrogen peroxide-hydrochloric acid and hydrogen peroxide-sodium perborate), sodium hydroxide and sodium hypochlorite, always aiming for low reagent concentrations, in the range of 1-12%. The results show that sodium hydroxide and sodium hypochlorite were the treatments that lead to paper sheets with better structural and mechanical properties without further bleaching or refining, thus highlighting the suitability of these algae for papermaking applications.

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Section: Carbohydrate Extractions and Effects On Paper Propertiesmentioning

confidence: 99%

Valorization of Seaweed: Using Brown Algae Waste in Papermaking

Moral

Aguado

Amaya

et al. 2021

Preprint

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“…The consumption of Oxygen bleaches in 2002 was approximately 105,000 tones [11]. sodium percarbonate or sodium perborate usage is safer to use than hydrogen peroxide and easily stored when compared with peroxide [12].…”

Section: H 2 O 2 + Oh ----------› Hoo -+ H 2 Omentioning

confidence: 99%

Comparative performance evaluation of bleaching of Egyptian cotton fibers using different bleaching agents

Bahlool¹,

Zaghlol

2020

Egypt. J. Chem.

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T he main objective of this study was to evaluate the potential of sodium percarbonate and sodium perborate utilization in cotton fiber bleaching instead of Hydrogen Peroxide and to compare the influence of these bleaching agents on performance of some Egyptian cotton varieties (G88, G90, G95, and G96).Bleaching efficiency is evaluated by the degree of whiteness, yellowness, micronaire value, Length, fiber strength and elongation percent. This research was conducted with bleaching using Oxygen bleaches comparable to the conventional bleaching agents such as Hydrogen Peroxide.Results showed that the bleaching with sodium Percarbonate (SPC) and sodium perborate (SPB) using three different concentrations brought an overall improvement in cotton fibers whiteness without decreasing the qualities of cotton fibers in comparison to hydrogen peroxide. This implies that these oxygen bleaches can replace the hydrogen peroxide. Moreover, oxygen bleaches are considered as good alternatives for other bleaches because of their economic and environmental impact as they are more stable and can be stored in a solid form. Besides, they can be active at lower temperatures.

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“…The amount of SPBTH and length of application were set as independent variables, while temperature (70 °C) and concentration (12%) were set as constant (Table 3). This is because SPBTH requires high temperatures such as 70 to 80 °C and medium concentrations for activation (Pesman et al 2014). Table 3.…”

Section: Bleaching Proceduresmentioning

confidence: 99%

Application of Artificial Neural Networks for predicting tensile index and brightness in bleaching pulp

Okan

Deniz

Tiryaki

2015

Maderas, Cienc. tecnol.

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The purpose of this study was to develop artificial neural network (ANN) models for predicting the effects of wood species, sodium perborate tetrahydrate (SPBTH) ratio, time, and beating degree on tensile index and brightness in bleaching pulp. Unbleached kraft-AQ bamboo and poplar pulps were exposed to first stage oxygen delignification for bleaching under 0,5 MPa, 3% NaOH and 12% consistency conditions. SPBTH bleaching was then carried out as the final stage. SPBTH bleached pulp was next beaten using two different degrees (55 SR° and 65 SR°). Tensile index and brightness data for training, validation and testing of the models were elicited from these experimental investigations. The models were established using the resulting data. The lowest R 2 value was 0,98 among training, testing and validation data sets in the prediction of both tensile index and brightness. The networks therefore explain at least 98% of the experimental data for all data sets. The results indicate that ANN is a useful and effective tool for predicting tensile index and brightness. This study thus describes a novel and alternative approach to predicting tensile index and brightness in bleaching pulp compared to the literature.

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The Effects of Sodium Percarbonate and Perborate Usage on Pulping and Flotation Deinking Instead of Hydrogen Peroxide

Cited by 10 publications

References 3 publications

Valorization of Seaweed: Using Brown Algae Waste in Papermaking

Valorization of Seaweed: Using Brown Algae Waste in Papermaking

Comparative performance evaluation of bleaching of Egyptian cotton fibers using different bleaching agents

Application of Artificial Neural Networks for predicting tensile index and brightness in bleaching pulp

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