糯米灰浆粘结型富钙成型活性炭的制备及其性能

doi:10.3969/j.issn.0253-2417.2016.06.003

Abstract

Abstract: Chinese fir sawdust was physically activated by papermaking white mud to prepare calcium-rich powdery activated carbons. The effects of preparation conditions on the yield and adsorption capacity of activated carbons were investigated. Compression molding of a mixture of calcium-rich activated carbons blended with cooked sticky rice soup was performed to fabricate sticky rice-lime mortar cemented column-shaped activated carbon monolith. Under the optimized conditions, the specific surface area of the prepared activated carbon was 975 m²/g and the yield was about 24%. After heat treatment at 300℃ for 1 h, the iodine adsorption value of the prepared activated carbon monolith was 410 mg/g, the compressive strength was 18 MPa, and its resistance to water immersion was excellent. SEM and XRD analysis results indicated that the components of the sticky rice-lime mortar bonding activated carbon monolith were cemented closely, and the carbonation crystallization process of the lime component which was integrated in activated carbon monolith could be regulated by the glutinous rice paste to form a compact microstructure.

Key words: papermaking white mud, sticky rice-lime mortar, calcium-rich activated carbon monolith, adsorption, compressive strength

CLC Number:

TQ424

HUANG Ming-jie, HUANG Bi-zhu, LIN Shan, HUANG Biao, CHEN Yan-dan. Preparation and Performance of Calcium-rich Activated Carbon Monolith Cemented by Sticky Rice-lime Mortar[J]. Chemistry and Industry of Forest Products, 2016, 36(6): 16-22.

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Preparation and Performance of Calcium-rich Activated Carbon Monolith Cemented by Sticky Rice-lime Mortar

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