TCF Pulp Bleaching for Viscose Pulp Production, 19PEERS

Viscose pulp production has been growing at a quick pace over the last years and several new projects are foreseen. Indeed the growing market demand for man-made fibers and increased environmental constraints that limit the ability of oil-based fibers to capture the growth has resulted in an increased demand for viscose. However, the opportunity will be sustainable only by improving the environmental impact of dissolving pulp production and the viscose process.  This paper addresses issues associated with the dissolving pulp process and looks especially at TCF bleaching of viscose pulp with ozone and hydrogen peroxide. Starting with a review of chemical reactions involved in TCF bleaching, different bleaching approaches will be discussed along with industrial examples to propose sustainable bleaching sequences for viscose pulp production. 

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