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Hydrogen Peroxide and Sodium Perborate Bleaching of Pulp from Olive Tree Residues

Engineering in life sciences, 2002-07, Vol.2 (7), p.201-208 [Peer Reviewed Journal]

2002 WILEY‐VCH Verlag GmbH, Weinheim, Fed. Rep. of Germany ;2003 INIST-CNRS ;ISSN: 1618-0240 ;EISSN: 1618-2863 ;DOI: 10.1002/1618-2863(20020709)2:7<201::AID-ELSC201>3.0.CO;2-B

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  • Title:
    Hydrogen Peroxide and Sodium Perborate Bleaching of Pulp from Olive Tree Residues
  • Author: López, F. ; Díaz, M.J. ; Eugenio, M.E. ; Ariza, J. ; Jiménez, L.
  • Subjects: Applied sciences ; Bleaching ; Exact sciences and technology ; Hydrogen Peroxide ; Paper, paperboard, non wovens ; Polymer industry, paints, wood ; Pulp ; Pulp manufacturing ; Wood. Paper. Non wovens
  • Is Part Of: Engineering in life sciences, 2002-07, Vol.2 (7), p.201-208
  • Description: This paper will consider the influence of the operating conditions used in the hydrogen peroxide bleaching (concentration 1–5 % and process time 30–210 min) and sodium perborate bleaching (sodium perborate concentration 1–5 %, hydrogen peroxide 0–2% and process time 60–180 min) of olive wood trimmings pulp on the yield, kappa index and viscosity of the resulting pulp, and on strength related properties of paper sheets (stretch index and burst index) in order to determine the best bleaching conditions of this pulp. Medium to low hydrogen peroxide concentrations (1–3 %) and a high operation time (210 min) were desired in the bleaching of pulp. A high sodium perborate concentration and hydrogen peroxide concentration (5 % and 2 % respectively) and medium to low operation time (60–120 min) were desired for the sodium perborate bleaching. A comparison of both bleaching agents, under similar or under optimum operating conditions, revealed that sodium perborate bleaching results in lower brightness, a higher kappa index and also higher viscosity than hydrogen peroxide bleaching. Moreover, both provided similar stretch index and burst index values for sodium perborate bleaching with respect to hydrogen peroxide bleaching. In the pulp and paper industry, both market demands and environmental pressures led to the development of technological bleaching of pulp using nonchlorinated chemicals such as oxygen, hydrogen peroxide or ozone. This study considers the influence of the operating conditions used in the hydrogen peroxide bleaching and sodium perborate bleaching of olive wood trimmings pulp on the yield, kappa index and viscosity of the resulting pulp, and on strength related properties of paper sheets (stretch index and burst index) in order to determine the best bleaching conditions of this pulp.
  • Publisher: Weinheim: WILEY-VCH Verlag Gmbh
  • Language: English
  • Identifier: ISSN: 1618-0240
    EISSN: 1618-2863
    DOI: 10.1002/1618-2863(20020709)2:7<201::AID-ELSC201>3.0.CO;2-B
  • Source: Alma/SFX Local Collection
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