Technosol Development Based on Residual Fraction of Coal Tailings Processing, Agro-Industrial Waste, and Paper Industry Waste

Eduarda Fraga Olivo (), Alexandre Zaccaron, Juliana Acordi, Manuel Joaquim Ribeiro, Élia Maria Raposo Fernandes, Jairo José Zocche and Fabiano Raupp-Pereira ()
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Eduarda Fraga Olivo: Programa de Pós-Graduação em Ciência e Engenharia de Materiais (PPGCEM), Grupo de Pesquisa Valorização de Resíduos como Estratégia para o Desenvolvimento da Economia Circular (GP VALORA), Universidade do Extremo Sul Catarinense (UNESC), Criciúma 88806-000, SC, Brazil
Alexandre Zaccaron: Programa de Pós-Graduação em Ciência e Engenharia de Materiais (PPGCEM), Grupo de Pesquisa Valorização de Resíduos como Estratégia para o Desenvolvimento da Economia Circular (GP VALORA), Universidade do Extremo Sul Catarinense (UNESC), Criciúma 88806-000, SC, Brazil
Juliana Acordi: Programa de Pós-Graduação em Ciência e Engenharia de Materiais (PPGCEM), Grupo de Pesquisa Valorização de Resíduos como Estratégia para o Desenvolvimento da Economia Circular (GP VALORA), Universidade do Extremo Sul Catarinense (UNESC), Criciúma 88806-000, SC, Brazil
Manuel Joaquim Ribeiro: ProMetheus-Research Unit in Materials, Energy and Environment for Sustainability, Polytechnic Institute of Viana do Castelo, Rua Escola Industrial e Comercial de Nun’Álvares, 4900-347 Viana do Castelo, Portugal
Élia Maria Raposo Fernandes: CISAS—Center for Research and Development in Agrifood Systems and Sustainability, Polytechnic Institute of Viana do Castelo, Rua Escola Industrial e Comercial de Nun’Álvares, 4900-347 Viana do Castelo, Portugal
Jairo José Zocche: Programa de Pós-Graduação em Ciências Ambientais (PPGCA), Universidade do Extremo Sul Catarinense (UNESC), Criciúma 88806-000, SC, Brazil
Fabiano Raupp-Pereira: Programa de Pós-Graduação em Ciência e Engenharia de Materiais (PPGCEM), Grupo de Pesquisa Valorização de Resíduos como Estratégia para o Desenvolvimento da Economia Circular (GP VALORA), Universidade do Extremo Sul Catarinense (UNESC), Criciúma 88806-000, SC, Brazil

Sustainability, 2024, vol. 16, issue 17, 1-18

Abstract: In order to obtain solutions to the coal mining region demand in southern Brazil for high-performance and low-cost technosols within a concept of mineral circularity and sustainable development of the coal sector, this study aims to evaluate the functional feasibility of the combined use of a residual fraction of coal tailing, waste from the rice and poultry agro-industry, as well as the cellulose industry, as raw materials for technosol development. Characterizations (XRF, LOI, ICP-OES, pH, XRD, and sulfur forms) were performed to adjust the waste proportions used in the constructed soil, as defined based on the clay content of the coal tailing, the organic carbon content of the poultry litter, and technical recommendations for the use of synthetic gypsum in agricultural soils. Based on the characterizations of the residues, a greenhouse experiment was designed, consisting of four technosol formulations (T1–T4). Initially, an ecotoxicity test was conducted with the treatments in contact with Allium cepa L. (onion) to determine the degree of technosol toxicity. Field tests were then carried out, which were replicated three times in a completely randomized block design, with the germination and growth of Lactuca sativa L. (crisp lettuce) as a bioindicator. The fertility of the treatments was analyzed eight weeks after the establishment of the experiment and compared to standard values for agricultural soils. The characterization performed with the individual wastes demonstrated the potential for application in technosols according to current regulations. The ecotoxicity tests showed that the soil was not toxic to the plant in any of the treatments studied. The field experiment demonstrated no difference in germination between the treatments. However, the development of lettuce seedlings occurred only in technosol formulations T2 and T3, highlighting the potential of the studied residues for the construction of technosols.

Keywords: technosols; residual fraction of coal tailing; waste recovery; agro-industrial waste; paper industry waste; sustainability (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2024
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