Among the various methods of remediation of contaminated soil, immobilization is one of the most commonly used methods. The purpose of the study was to examine the use of industrial waste in the immobilization process. We studied the use of red mud and paper ash from the incineration of sludge from the treatment of paper-mill wastewater as additives for soil remediation from the area of the old Cinkarna in Celje by the process of immobilization by processing into a building composite. The results showed that the addition of recycled industrial waste from treatment of industrial wastewaters leads to the immobilization of potentially toxic substances from the soil in the bound matrix of composites. The environmental aspects and physico-mechanical properties of the composites for the purpose of use for the rehabilitation of the degraded area were studied. The present research is the basis for the development of the remediation process of contaminated soil, which includes the recycling of suitable industrial waste (including from industrial wastewater treatment processes) in accordance with the principles of sustainable development and closure of material loops.
COBISS.SI-ID: 1548126
In order to conserve natural resources and prevent waste generation, effective utilization of industrial wastes and/or by-products for beneficial engineering applications becomes inevitable. In order to accomplish this, extensive research studies, exploring properties and new applications of waste materials in a sustainable and environmentally friendly manner, have been initiated worldwide. Red mud (RM, also known as bauxite residue) is one of the wastes generated by the aluminium industry and its disposal and utilization have been traditionally hindered due to the extreme alkalinity (pH about 10.5%13.5). To date, no comprehensive review on various properties of RM of different origin and associated challenges in using it as a beneficial engineering material has been performed. The objective of this study is first to critically appraise the current understanding of properties of RM through a comprehensive literature review and detailed laboratory investigations conducted on Indian RM by the authors, to assess and identify the potential engineering applications, and to finally discuss associated challenges in using it in practical applications. Physical, chemical, mineralogical and geotechnical properties of RMs of different origin and production processes are reviewed. Mechanisms behind the pozzolanic reaction of RM under different chemical and mineralogical compositional conditions are discussed. Environmental concerns associated with the use of RM are also raised. Studies...
COBISS.SI-ID: 15673603