Use of permeable concrete with additives in wastewater treatment, focusing on biochar: a review

• Autor(a) principal: Clementino, Fabio de Souza
• Data de Publicação: 2021
• Outros Autores: Santiago, Jéssica Machado, Sousa, Heitor Fernandes de, Conceição, Italo Gutierry Carneiro da, Santos, Hudson Chagas dos
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Research, Society and Development
• Texto Completo: https://rsdjournal.org/index.php/rsd/article/view/19111
• topic: Hormigón poroso; Biochar; Permeabilidad; Porosidad; Propiedades adsorbentes.; Concreto poroso; Biocarvão; Permeabilidade; Porosidade; Propriedades adsorventes.; Porous concrete; Biochar; Permeability; Porosity; Adsorbent properties.

In large urban centers, the constant waterproofing of roads intensifies flooding and flooding, causing countless inconveniences to the population. The use of permeable concrete as a rainwater and wastewater drainage mechanism has been a partial solution to this type of drainage problem, including the addition in its composition of materials with adsorbent properties aimed at improving physical-chemical and biological parameters from water. Therefore, this article aims to bring important results from several studies using permeable concrete with mineral additions and show the benefits in mechanical and adsorbent properties of this type of concrete, with emphasis on the use of biochar. For this, the methodology chosen was to do a brief literature review, in which completed researches available in online databases such as Scopus, Science Direct from the year 2015 were analyzed using as descriptors in English: “Concrete” AND “Biochar ”, “Concrete porous” AND “Biochar”, “Pervious concrete” AND “Biochar”, “Treatment of water” AND “Concrete porous”, “Cementitious materials” AND “Biochar”. 51 references were selected and specified as follows: 48 scientific articles, 1 standard and 2 book chapters. It was found that the addition of adsorbent minerals and biochar in concrete can improve water quality parameters such as decreased turbidity, total nitrogen (NT), Total Phosphorus (PT), COD, BOD, among others, and promote, in in some cases, mechanical strength gain of the concrete produced.