Abstract
Purpose
This study aims to analyze and quantify the environmental impacts associated with the production of testliner paper using 100 % recovered paper as fiber raw material, by applying the life cycle assessment principles. A simulation of advanced sorting technology was done to prepare and use batches of raw materials with different levels of contaminants. Comparative studies of environmental impact assessment were focused on the quality of recovered paper, which is decisively influenced by the efficiency of the sorting process. The particularity of the study is that so far it is the only one that analyzes the environmental impact generated by recovered paper quality.
Methods
To analyze the environmental impacts in the scenarios, life cycle assessment methodology was considered. Potential environmental impacts were assessed by using the CML 2009, Dec.07 method developed by the Centre for Environmental Science from the University of Leiden.
Results and discussion
In this study, acidification potential, abiotic resources depletion potential, eutrophication potential, global warming potential, photochemical ozone creation potential, and human toxicity potential were the impact categories analyzed. Considering that the system boundaries refer only to the paper mill that was obtained, all unitary processes involved in the manufacturing of product system influence in varying proportions the impact categories chosen for evaluation. A higher concentration of contaminants leads to a higher amount of energy and water used, and thus, a significant amount of waste and emissions generated. Simulations performed have highlighted the importance of sorting technology that influences the quality of raw material that will be used.
Conclusions
Utilization of recovered paper batches with a low quality contributes to an increased environmental impact associated with the testliner paper manufacturing stage. A low quality of recovered paper will influence energy consumption in different modules of the system (recycled fiber pulp preparation, paper machine, and wastewater treatment), the volume of waste generated, and consequently the emissions released both in air and water.
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Acknowledgements
This paper was developed with the support of BRAIN “Doctoral scholarships as an investment in intelligence” project, financed by the European Social Found and Romanian Government and Packaging, Transport & Logistics Research Center, ITENE, Spain, and S.C. Vrancart S.A. Adjud Romania, paper mill.
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Iosip, A., Dobon, A., Hortal, M. et al. The influence of contaminants in the environmental impact of recovered paper: a life cycle assessment perspective. Int J Life Cycle Assess 17, 1050–1058 (2012). https://doi.org/10.1007/s11367-012-0430-y
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DOI: https://doi.org/10.1007/s11367-012-0430-y