Research on Cotton Bast Pulping Using Alkaline Peroxide BIVIS Pulp Method, 2007 Engineering, Pulping & Environmental Conference

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In this paper, a neoteric pulping method, alkaline peroxide Bivis pulp (APBP) and its application on cotton bast is introduced. The main chemicals used in the pulp process were alkali and peroxide, and the third generation Bivis refiner was used. The cotton stem was separated into three fractions: cotton stalk, cotton bast and surface layer bast. Cotton stalk and cotton bast were pulped respectively, which overcame the disadvantage of the traditional pulping method applied on whole cotton stem. An orthogonal test design was used in the experiments to obtain the optimal conditions and the main parameters in the chemical pretreatment stage according to the changes of the physical properties of the paper sheets. It was shown that high yield and high strength properties of the paper sheet with low pollution and low energy consumption could be obtained with the cotton bast pulp by APBP method. APBP method is a comparatively competitive pulping method for cotton bast fibre, which shows a new path for bast fibres and non-wood fibres pulping.