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Keywords = Deinking
Number of Articles: 6
Use of Central Composite Design for Optimization of ultrasonic pre-treatment parameters on chemical deinking of old newspaper
Volume 33, Issue 4 , February 2019, , Pages 489-500
Abstract
To reuse recycled cellulosic fibers in paper production, contaminated particles and other impurities of the fibers can be greatly removed using a de-inking stage which is considered as a supplementary step in waste paper recycling technology. The effect of using ultrasonic pretreatment on the deinking ... Read MoreEnzymatic Versus Chemical Deinking of Old Newspaper
Volume 25, Issue 2 , September 2018, , Pages 223-233
Abstract
In this study, Deinking of old newspaper was investigated by chemical and enzymatic methods. Chemical treatment was done using chemicals at different times of 10, 20 and 30 minutes, consistency of 10%, temperature of 50±1!C along with washing, flotation and combination of washing/flotation. While, ... Read MoreThe effect of different charges of sodium dithionite and bleaching times on the optical and mechanical properties and COD of bleached recycled mixed ONP and OMG pulps
Volume 29, Fall 3 , November 2014, , Pages 411-421
Abstract
This research was conducted to investigate the bleaching of combined old newspapers (ONP) and old magazines (OMG) deinked pulp using sodium dithionite. The pulp was bleached using 0.5, 0.75, and 1% sodium dithionite and different times of 30, 60 and 90 minutes. The pulps were then refined to 300 ml, ... Read MoreThe effect of poly acrylic acid, sodium salt grafted to poly ethylene oxide complex on the physical and optical properties of old newsprint paper deinked pulp
Volume 28, Issue 3 , October 2013, , Pages 405-416
Abstract
Considering the problems initiated by sodium silicate on reducing the life expectancy of processing equipments and paper strength, recycling of old newspaper using Poly (acrylic acid), Sodium Salt Grafted to Poly (ethylene oxide) complex were investigated. The organic complex was used at 0.3, 0.5, 0.7, ... Read MoreInvestigation on the physical and mechanical properties of waste newspaper deinked pulp by cellulase enzyme compared to conventional method
Volume 26, Issue 2 , June 2011, , Pages 243-255
Abstract
In this study, deinking of waste newspaper was investigated by conventional and enzymatic methods. Conventional deinking was done in pulping times of 10, 20 and 30 minutes along with different processes of washing, flotation and combined washing/ flotation. Enzymatic deinking was accomplished ... Read MoreEffect of refining of deinked pulp on the optical, physical and mechanical properties of paper
Volume 24, Issue 1 , September 2009, , Pages 148-157