摘要：This paper presents the study results of performance and efficiency of fresh offsetprinted Croatian daily newspaper,deinked by means of novel chemistry,named Eco-alkali.Eco-alkali is naturally gained alkali prepared from domestic by-product wood fly ash collected after hardwood ignition.Brightness,opacity and effective residual ink concentration (ERIC) as optical properties were evaluated for the deinked pulp before and after flotation.Lingering ink particles and their total surface area were measured by means of image analysis method.Experimental results are compared to the pulp deinked with worldwide accepted method INGEDE Method 11,using identical steps through the whole deinking process.The insights obtained from present work,especially removing particle efficiency results before flotation,indicated that eco-alkali have potential to be used in flotation deinking of newspapers.
