SciELO - Scientific Electronic Library Online

vol.24 número2Numerical approach of the steel-concrete bond behavior using pull-out modelsAutomotive waste oil as an additive in concrete mixtures: its use is feasible índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados




Links relacionados


Matéria (Rio de Janeiro)

versão On-line ISSN 1517-7076


SILVA, Thaynara de Almeida Corrêa e  e  PAULA, Heber Martins de. Water management in a concrete plant: Moringa oleifera employment analysis without wastewater treatment and reuse proposal after treatment. Matéria (Rio J.) [online]. 2019, vol.24, n.2, e12342.  Epub 10-Jun-2019. ISSN 1517-7076.

The civil construction acivities, great consumers of raw material and water resources, ha demonstrated signs to achieve a sustainable production. In this sector, the management and reuse of residual waters in concrete batchers would contribute in the decrease of negative impacts with relation to environment. However, to make the residual water reuse, viable, it is needed to make its threat, aimming the adequacy of such indicators as, alkalinity, residual free chlorine, hardness, ph and turbidity with the current regulations. Therefore, this article avaluated the possible applications for residual water threated with the use of “moringa oleifera” aqueous extract, obtained by two ways, as: only in distilled water (EAMO) and other in water distilled with calcium nitrate (EAMO/Ca2+) and with aluminium sulfate (Al2(SO4)3) as the chemical coagulant. The analized threats made the decrease of alkalinity to 22% with EAMO/Ca2+ and 16% with the Al2(SO4)3

Palavras-chave : liquid waste; post treatment applications; Moringa oleifera; concrete; natural coagulant.

        · resumo em Português     · texto em Português     · Português ( pdf )