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PULP AND PAPER MILL SLUDGE; A SOIL AMENDMENT AND COMPOST OPTION FOR LANDFILL DIVERSION FOR SOUTH-AFRICA

  • Noredine Loeid Mahdjoub - School of Engineering, member of the SARchi Waste and Climate change, University of KwaZulu-Natal, South Africa
  • Yusuf Omartjee - School of Engineering, member of the SARchi Waste and Climate change, University of KwaZulu-Natal, South Africa
  • Cristina Trois - School of Engineering, member of the SARchi Waste and Climate change, University of KwaZulu-Natal, South Africa

DOI 10.31025/2611-4135/2022.15217

Released under CC BY-NC-ND

Copyright: © 2022 CISA Publisher

Abstract

In South-Africa, approximately 30% of all recycled paper is being disposed into landfill sites or incinerated. Using this type of hazardous and industrial waste as a resource is essential to reduce landfilling of organic waste. In this study, Pulp and Paper-Mill Sludge (PPMS) has been evaluated under two possible pathways contributing to landfill diversion and secondary use: compostability and the use of PPMS as a soil amendment. A short review of existing studies on PPMS using these two pathways as alternative for secondary use and within the South-African context have been undertaken. This investigation showed that the addition of PPMS to soil as an amendment does not negatively affect sol fertility. The potential of PPMS as a soil amendment or compost contribute to improving factors allowing for increased soil fertility resulting in a better soil structure. Such effects from either using PPMS as an amendment or compost will directly increase resistance of soils to degradation ultimately allowing for reduced erosion potential of soils.

Keywords

Editorial History

  • Received: 17 Jun 2022
  • Revised: 22 Aug 2022
  • Accepted: 07 Sep 2022
  • Available online: 20 Sep 2022

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