CHARACTERIZATION OF PULP AND PAPER MILL WASTE FOR THE PRODUCTION OF WASTE-BASED CEMENT

Contenido principal del artículo

Lisandro Simão
Dachamir Hotza
Fabiano Raupp-Pereira
João A. Labrincha
Oscar R.K. Montedo

Resumen

Waste generation is increasing in many industries. Therefore, effective measures are required to secure an environmentally sustainable and economically viable waste destination. Co-processing in clinker kilns at high temperatures and incorporation into cement matrices may stabilize many types of industrial waste. This paper presents the results of a study that characterized pulp and paper mill waste and their recycling in clinker production. Chemical characterization and estimation of the hazardous potential of lime mud, biomass ash, and wastewater treatment plant (WWTP) sludge were performed in accordance with brazilian standard (NBR) 10004:2004. Biomass ash and WWTP sludge were classified as non-hazardous (class II), while lime mud was classified as hazardous (pH > 12.5, class I). These wastes were mixed (69 wt % lime mud, 29 wt % biomass ash, and 2 wt % WWTP sludge), and the resulting mixture was processed at 1455 ºC to generate ‘Ecoclinker’. The clinker was characterized, milled, and mixed with calcium sulphate for use as an ‘Ecocement’. Mortars were obtained and cured for periods of seven and twenty-eight days. The hardened product exhibited a mechanical strength of ~20 MPa. The leaching and pH tests indicated that these parameters were within the permitted limits, confirming that this waste-based cement was non-hazardous.

Descargas

Los datos de descargas todavía no están disponibles.

Detalles del artículo

Biografía del autor/a

Lisandro Simão, Federal University of Santa Catarina

Graduate Program in Materials Science and Engineering (PGMAT), Department of Mechanical Engineering (EMC), Federal University of Santa Catarina (UFSC), PO Box 476, 88040-900 Florianópolis (SC), Brazil;

Dachamir Hotza, Federal University of Santa Catarina

Graduate Program in chemical engineering (POSENQ), Department of Chemical Engineering (EQA), Federal University of Santa Catarina (UFSC), PO Box 476, 88040-900 Florianópolis (SC), Brazil

Fabiano Raupp-Pereira, Federal University of Santa Catarina

Graduate Program in Materials Science and Engineering (PGMAT), Department of Mechanical Engineering (EMC), Federal University of Santa Catarina (UFSC), PO Box 476, 88040-900 Florianópolis (SC), Brazil;

João A. Labrincha, University of Aveiro

Department of Materials and Ceramic Engineering / CICECO- Aveiro Institute of Materials, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal;

Oscar R.K. Montedo, Universidade do Extremo Sul Catarinense

Programa de Pós-Graduação em Ciência e Engenharia de Materiais (PPGCEM), Laboratório de Cerâmica Técnica (CERTEC), Universidade do Extremo Sul Catarinense (UNESC), 88806-000 Criciúma (SC), Brazil.

Compartir en:

PLUMX metrics