Effect of chemical components in white liquor on carbon activation. (31st July 2015)

• Record Type: Journal Article
• Authors: Namazi, Azadeh B.; Allen, D. Grant; Jia, Charles Q.
• Is Part Of: Canadian journal of chemical engineering. Volume 93:Number 10(2015)
• Page Start: 1705
• Page End: 1712
• Publication Date: 2015-07-31
• Subjects: Chemical engineering -- Periodicals; Technology -- Periodicals; 660.05
• DOI: 10.1002/cjce.22281
• Languages: English
• ISSNs: 0008-4034

Abstract

<abstract abstract-type="main" xml:lang="en"> <title> <x xml:space="preserve">Abstract</x> </title> <sec id="cjce22281-sec-0001" sec-type="section"> <p>Conversion of pulp mill sludge into activated carbon is an alternative solution for waste management at pulp mills. In this study, the use of white liquor as an activating agent was investigated, with the aim of applying an available source at pulp mills. A Specific Surface Area (SSA) value of 650 m²/g and an activation yield of 61 % were achieved with synthetic white liquor at 600 °C and 2 h. The SSA values obtained with white liquor were ∼60 % lower than those with NaOH alone. Thermodynamic analyses, X‐ray diffraction, and elemental analyses showed that both Na₂S and Na₂CO₃ inhibit the activation reaction with carbon.</p> </sec> </abstract>