scholarly journals Poly-paper: a sustainable material for packaging, based on recycled paper and recyclable with paper

2016 ◽  
Vol 14 (4) ◽  
pp. 0-0 ◽  
Author(s):  
Barbara Del Curto ◽  
Nadia Barelli ◽  
Mauro Profaizer ◽  
Silvia Farè ◽  
Maria Cristina Tanzi ◽  
...  
Keyword(s):  
Recycled Paper ◽  
Sustainable Material

Resource efficiency in deinked pulp production: a review

TAPPI Journal ◽  
2014 ◽  
Vol 13 (11) ◽  
pp. 37-43 ◽  
Author(s):  
LIISA KOTANEN ◽  
MIKA KÖRKKÖ ◽  
ARI ÄMMÄLÄ ◽  
JOUKO NIINIMÄKI
Keyword(s):  
Waste Disposal ◽  
Resource Efficiency ◽  
Raw Material ◽  
Ecological Strategy ◽  
Recycled Paper ◽  
Paper Production ◽  
Recycled Pulp ◽  
Current State ◽  
The Cost ◽  
Pulp Production

The use of recovered paper as a raw material for paper production is by far the most economical and ecological strategy for the disposal of waste paper. However, paper production from recovered paper furnish generates a great amount of residues, and the higher the demand requirements for the end product, the higher the amount of rejected material. The reason for this is that the selectivity of the deinking process is limited; therefore, some valuable components are also lost in reject streams. The rejection of usable components affects the economics of recycled paper production. As the cost of waste disposal continues to increase, this issue is becoming more and more severe. This paper summarizes the current state of the resource efficiency in recycled pulp production and provides information on the volumes of rejected streams and the usable material within them. Various means to use these reject streams are also discussed, including the main findings of a recent thesis by the main author. This review summarizes current internal and external use of reject streams generated in the deinking operations.

Deinking of recycled paper by coupling of the enzyme endo-β-1,4-D-glucanasa and the cellulose, and by using a laboratory flotation column

MRS Advances ◽  
2020 ◽  
Vol 5 (52-53) ◽  
pp. 2669-2678
Author(s):  
Jeovani González P. ◽  
Ramiro Escudero G
Keyword(s):  
Amino Acids ◽  
Sodium Hydroxide ◽  
Paper Industry ◽  
Computational Simulation ◽  
Cellulose Fibers ◽  
Residual Water ◽  
Chemical Reagent ◽  
Recycled Paper ◽  
Flotation Column ◽  
Hydrolysis Of

AbstractDeinking of recycled office (MOW) paper was carried out by using a flotation column and adding separately sodium hydroxide, and the enzyme Cellulase Thricodema Sp., as defibrillators.The de-inked cellulose fibers were characterized according to the standards of the paper industry, to compare the efficiency of the deinking of each chemical reagent used to hydrolyze the fibers and defibrillate them.The computational simulation of the molecular coupling between the enzyme and cellulose was performed, to establish the enzyme-cellulose molecular complex and then to identify the principal amino-acids of endo-β-1,4-D-glucanase in this molecular link, which are responsible for the hydrolysis of the cellulose.Experimental results show the feasibility to replace sodium hydroxide with the enzyme Cellulase Thricodema Sp., by obtaining deinked cellulose with similar optical and physical properties.The use of the enzyme instead of sodium hydroxide avoids the contamination of the residual water; in addition to that, the column is operated more easily, taking into consideration that the pH of the system goes from alkaline to neutral.

KINETIC EVALUATION AND PROCESS PERFORMANCE OF A PILOT GAC-SBBR SYSTEM TREATING RECYCLED PAPER INDUSTRY WASTEWATER

2012 ◽  
Vol 11 (4) ◽  
pp. 829-839 ◽  
Author(s):  
Siti Rozaimah Sheikh Abdullah ◽  
Mohd Hafizuddin Muhamad ◽  
Abu Bakar Mohamad ◽  
Rakmi Abdul Rahman ◽  
Abdul Amir Hasan Kadhum
Keyword(s):  
Paper Industry ◽  
Process Performance ◽  
Recycled Paper ◽  
Kinetic Evaluation ◽  
Industry Wastewater

Agriculture—Things That Are Grown

2017 ◽  
Author(s):  
Peter Rez
Keyword(s):  
Crop Yields ◽  
Animal Feed ◽  
Electrical Power ◽  
Construction Materials ◽  
Embodied Energy ◽  
Liquid Fuels ◽  
Energy Output ◽  
Recycled Paper ◽  
Additional Energy ◽  
Energy Inputs

Timber has the lowest embodied energy of any of the construction materials. Paper production from trees requires much more energy. There is some energy saving in recycling, as recycled paper substitutes for pulp derived from wood chips. Growing crops for food also requires energy. The energy required for plants to grow comes from the sun, but there are additional energy inputs from fertiliser and farm machinery to speed up the growth process and vastly improve crop yields. If grains are used as animal feed, then the energy inputs are much larger than the dietary energy output—the larger the animal and the longer it is fattened up before slaughter, the more inefficient the process. The use of crops to make fuel for electrical power generation or for processing into liquid fuels is horribly inefficient. The problem is simple—the plants do not grow fast enough!

Study of Thermal Insulation Performance of Layered Jute Nonwoven: A Sustainable Material

2021 ◽  
pp. 1-14
Author(s):  
Kartick K. Samanta ◽  
Izhar Mustafa ◽  
Sayandeep Debnath ◽  
Esha Das ◽  
G. Basu ◽  
...  
Keyword(s):  
Thermal Insulation ◽  
Sustainable Material ◽  
Insulation Performance

Flax seeds based magnetic hybrid nanocomposite: An advance and sustainable material for water cleansing

2021 ◽  
Vol 42 ◽  
pp. 102150
Author(s):  
Arshi Choudhry ◽  
Atul Sharma ◽  
Tabrez Alam Khan ◽  
Saif Ali Chaudhry
Keyword(s):  
Hybrid Nanocomposite ◽  
Sustainable Material ◽  
Flax Seeds

scholarly journals Pupation Substrate Type and Volume Affect Pupation, Quality Parameters and Production Costs of a Reproductive Colony of Ceratitis capitata (Diptera: Tephritidae) VIENNA 8 Genetic Sexing Strain

Insects ◽  
2021 ◽  
Vol 12 (4) ◽  
pp. 337
Author(s):  
Carlos Pascacio-Villafán ◽  
Luis Quintero-Fong ◽  
Larissa Guillén ◽  
José Pedro Rivera-Ciprian ◽  
Reynaldo Aguilar ◽  
...  
Keyword(s):  
Wheat Bran ◽  
Ceratitis Capitata ◽  
Mass Rearing ◽  
Physicochemical Characteristics ◽  
Production Costs ◽  
Cellulose I ◽  
Coconut Fiber ◽  
Genetic Sexing ◽  
Recycled Paper ◽  
Genetic Sexing Strain

Adequate pupation substrates and substrate volume are critical factors in the mass-rearing of insects for Sterile Insect Technique (SIT) applications. To identify an ideal pupation substrate for a reproductive colony of Ceratitis capitata (Wiedemann) VIENNA 8 genetic sexing strain, we first examined pupation in cellulose from recycled paper (cellulose I), sawdust, fine wheat bran, vermiculite and coconut fiber using a volume of 2.5–12.5 mL of substrate for each 5 mL volume of fly larvae. We found a positive relationship between substrate volume and pupation, with cellulose I generating the highest proportions of pupation and coconut fiber the lowest. Higher proportions of female flies (white pupae) pupated in sawdust. The proportion of female fliers increased as substrate volume rose in sawdust and coconut fiber, whereas it decreased in vermiculite and cellulose. In a second experiment, we tested three types of cellulose differing in physicochemical characteristics (celluloses I, II and III), sawdust, and fine wheat bran using a substrate:larvae ratio of 1:1. The three types of cellulose produced the highest pupation levels. The highest proportions of female fliers were observed in sawdust, and cellulose types III and II. Cellulose III and sawdust at relatively low volumes were more cost-effective to produce one million pupae than other substrates, including fine wheat bran used in a mass-rearing facility in Mexico.

scholarly journals Green Activity-Based Costing Production Decision Model for Recycled Paper

Energies ◽  
2020 ◽  
Vol 13 (10) ◽  
pp. 2413 ◽  
Author(s):  
Chu-Lun Hsieh ◽  
Wen-Hsien Tsai ◽  
Yao-Chung Chang
Keyword(s):  
Mathematical Programming ◽  
Programming Model ◽  
Paper Industry ◽  
Labor Cost ◽  
Production Model ◽  
Theory Of Constraints ◽  
Carbon Equivalent ◽  
Activity Based Costing ◽  
Recycled Paper ◽  
Green Production

Using mathematical programming with activity-based costing (ABC) and based on the theory of constraints (TOC), this study proposed a green production model for the traditional paper industry to achieve the purpose of energy saving and carbon emission reduction. The mathematical programming model presented in this paper considers (1) revenue of main products and byproducts, (2) unit-level, batch-level, and product-level activity costs in ABC, (3) labor cost with overtime available, (4) machine cost with capacity expansion, (5) saved electric power and steam costs by using the coal as the main fuel in conjunction with Refuse Derived Fuel (RDF). This model also considers the constraint of the quantity of carbon equivalent of various gases that are allowed to be emitted from the mill paper-making process to conform to the environmental protection policy. A numerical example is used to demonstrate how to apply the model presented in this paper. In addition, sensitivity analysis on the key parameters of the model are used to provide further insights for this research.

Sign in / Sign up

Export Citation Format

Share Document