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Microbial Enzymes for Eco-Friendly Recycling of Wastepaper by Deinking

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Microbial Applications for Environmental Sustainability

Abstract

The papermaking industry relies heavily on forests for the raw material wood. In order to preserve forests, the practice of deinking and bleaching (recycling) used paper has become increasingly popular. As conventional chemical deinking processes are harmful to the environment due to the use of toxic chemicals, there is a need for more effective and eco-friendly deinking methods. Enzymatic deinking, with its high efficiency and low environmental impact, is a promising solution that utilizes cellulolytic, hemicellulolytic, and ligninolytic enzymes. During bleaching, the pulp is made more accessible to the chemicals and requires less of them to achieve the same levels of brightness by means of enzymatic action (both singly and in combination) and physical treatment. These processes enhance the pulp’s strength properties and brightness. This analysis details the many options available for recycling paper in a way that has the smallest possible ecological footprint.

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Acknowledgements

KG is supported by internal grant of YSU. AS is supported by the 23PostDoc-4D007 grant provided by the Science Committee of the Republic of Armenia. VDR and TM acknowledge the financial support of the Ministry of Science and Higher Education of the Russian Federation, agreement no. 075-15-2022-1122, and the Strategic Academic Leadership Program of the Southern Federal University (“Priority 2030”).

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© 2024 The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

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Rawat, S. et al. (2024). Microbial Enzymes for Eco-Friendly Recycling of Wastepaper by Deinking. In: Karnwal, A., Mohammad Said Al-Tawaha, A.R. (eds) Microbial Applications for Environmental Sustainability. Springer, Singapore. https://doi.org/10.1007/978-981-97-0676-1_9

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