cellulose, waste paper, recycling, mechanical treatment, chemical treatment
Abstract
This paper describes the waste paper recycling process. Special emphasis is placed on the description of technological phase (disintegration or grinding, screening, cleaning, washing and/or flotation, water treatment and disposal of sludge), which are generally required in the processing of waste paper, and which also represent the main phases in the mineral processing. The waste paper is a potential secondary raw materials but due to degradation of cellulose physical properties which occur during the recycling, the cellulose fibers can be recycled a limited number of times. Because of this, the impact analysis of mechanical and chemical treatment on the secondary fiber quality is also given in the paper.
