Effects of wood pulp fibre concentration on gas hold-up in bubble columns LK Witika University of Zambia, PO Box 32379, Lusaka, Zambia X Qui University of Regensbury, Germany DOI: 10.4314/jost.v9i2.17546 Keywords: environment, pulp, gas hold-up, superficial gas velocity Abstract No Abstract. Journal of Science and Technology Vol. 9(2) 2005: 35-40 Requires Subscription PDF Published 2006-09-08 Issue Vol. 9 No. 2 (2005) Section Articles Copyright for articles published in this journal is retained by the journal.