Abstract

REBOLLEDO-LOZANO, Guissela Andrea  and  RESTREPO-TARQUINO, Inés. Potential reuse of industrial sludge in the production of ceramic floor mortar. Ing. compet. [online]. 2020, vol.22, n.1, 8023. ISSN 0123-3033.  https://doi.org/10.25100/iyc.v22i1.8023.

The growing generation of sludge from Wastewater Treatment Plants (WWTP) has become a great challenge for researchers in the last decades; this is mainly related to its special characteristics, which must comply with regulatory comprehensive management to eliminate any risk of negative environmental impacts. Therefore, it must be ensured that waste production has to be merged into productive cycles for their valorization and minimization of negative environmental impacts that may be generated by its poor disposal.

The current investigation evaluated the incorporation of industrial and municipal waste sludge in ceramic adhesive manufacturing. Several attributes of sludge were evaluated and an experimental design (DOE) methodology was implemented to identify the quality of the glue by collaboration with the industrial company MAECOL. Experimental results showed that the most suitable sludge to replace a percentage of the conventional aggregates of the ceramic adhesive was the one produced by the company 2 of the metalworking sector; this was mainly due to the higher tensile strength obtained after the tests. It should be noticed that after the DOE study, the best tensile strength obtained after the runs was 0.34 MPa; this was achieved when 10% of the sludge was replaced In addition, it was observed that after replacing 20 and 30% of the sludge, the tensile strength decreased, nonetheless, to acceptable values.

Keywords : Construction materials; Reuse; Sludge and waste water.

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