Making Cardboard and Paper Recycling More Sustainable: Recycled Paper Sludge For Energy Production and Water-Treatment Applications
Rising socioeconomic level and increasing popularity of e-commerce have dramatically increased the use of cardboard packaging materials, and consequent related recycling and wastes. Large amounts of sludge (up to 40% of input mass) is formed through the recycling process, with sludge solids that are...
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Published in | Waste and biomass valorization Vol. 12; no. 3; pp. 1599 - 1608 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
Dordrecht
Springer Netherlands
01.03.2021
Springer Nature B.V |
Subjects | |
Online Access | Get full text |
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Summary: | Rising socioeconomic level and increasing popularity of e-commerce have dramatically increased the use of cardboard packaging materials, and consequent related recycling and wastes. Large amounts of sludge (up to 40% of input mass) is formed through the recycling process, with sludge solids that are very rich in cellulose fibers (~ 75% w/w). To date this sludge is mostly disposed in landfills, resulting in added economic and environmental costs to the recycling process. Short ozonation pretreatment of RPS resulted in enzymatic release of ~ 34% of the cellulosic fraction of the sludge as sugar, and fermentation of these sugars by yeasts resulted in production of ~ 15 g/L ethanol. The solid remnants, were used as a bio-sorbent, efficiently removing dyes from textile wastewater. Recycled paper sludge waste was thus a good source for both energy and water-treatment applications, increasing sustainability and circular economy in the paper and cardboard recycling industry. |
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ISSN: | 1877-2641 1877-265X |
DOI: | 10.1007/s12649-020-01117-y |