Sulfite pulp - bleached (sulfite pulp production - bleached)

Emissions generated by the activity within the product supply chain as described in ecoinvent v3.10. The product 'sulfite pulp' is a type of bleached chemical wood-containing pulp. It represents Total Chlorine Free (TCF) and Elemental Chlorine Free (ECF) pulp. Chemical pulp is produced by chemical pulping of biomass raw materials most commonly hardwood and softwood or also straw from many cereals bagasse reed or esparto grass and from other annual non-wood plants. The sulfite process is based on calcium magnesium and sodium or ammonium bisulfide and produces pulp which is virtually pure cellulose. As the process occurs in acidic conditions one of its drawbacks is that some of the cellulose is hydrolysed making the sulfite pulp fibres not as strong as other pulps for example those obtained with the sulfate process (i.e. kraft pulp). Nonetheless and although globally the sulfate process is used in up to 90% of chemical pulping processes sulfite pulps are important for specialty papers (e.g. tissue glassine) and as a sources of cellulose for various applications within or out of the paper industry. The cut-off classification is allocatable product. The activity type is ordinary transforming activity. The reference product amount is 1.