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Reversibility of al-kaolin and al-humic aggregates monitored by stable diameter and size distribution
(2018-07-01)
The reversibility of aggregates during flocculation was investigated. The stable diameter (d) and the power law slope coefficient of the particle size distribution (β) were applied to follow re-formation after breakage. A ...
Floculação: Considerações a partir da análise clássica e da avaliação direta da distribuição de tamanho de partículas
(2016-01-01)
This article presents some considerations on the flocculation from the classical analysis and direct evaluation of the particle size distribution. For this purpose, essays in bench scale were performed. The results were ...
Population Balance Discretization for Growth, Attrition, Aggregation, Breakage and Nucleation
(Elsevier, 2015-08-28)
This paper presents a new discretization method to solve the population balance equation (PBE) for batch and unsteady/steady-state continuous perfectly-mixed systems. The numerical technique is valid for any size change ...
Strength assessment of Al-Humic and Al-Kaolin aggregates by intrusive and non-intrusive methods
(2019-06-15)
Resistance to breakage is a critical property of aggregates generated in water and wastewater treatment processes. After flocculation, aggregates should ideally keep their physical characteristics (i.e. size and morphology), ...
Population balance modelling of particle flocculation with attention to aggregate restructuring and permeability
(2015)
A population balance model based on a detailed literature review is used to describe coagulation and flocculation kinetics as well as the time evolution of aggregate size distribution in a turbulent shear flow simultaneously ...
Neural network for fractal dimension evolution
(Iwa Publishing, 2018-08-01)
The coagulation/flocculation process is an essential step in drinking water treatment. The process of formation, growth, breakage and rearrangement of the formed aggregates is key to enhancing the understanding of the ...
Estudo da resistência do floco e da refloculação visando o tratamento de águas de abastecimento utilizando técnica de monitoramento por análise de imagem digital e dispersão de luz
(Universidade Estadual Paulista (Unesp), 2017-07-12)
Esta dissertação teve como objetivos a investigação da resistência e do recrescimento de flocos, produzidos durante a floculação de água destinada ao abastecimento, e foi dividida em duas etapas. Em primeiro lugar a ...
Laboratory evaluation of recycled construction and demolition waste for pavements
(ELSEVIER SCI LTD, 2011)
The wide production of construction and demolition waste and its illegal deposition are serious current problems in Brazil. This research proposes to evaluate the feasibility of using aggregate from recycled construction ...
Seawater flocculation of clay-based mining tailings: Impact of calcium and magnesium precipitation
(Elsevier, 2020)
In areas where access to water of good quality is limited, the use of seawater in mineral processing can be an option. However, the dewatering of waste tailings is adversely affected, particularly when this follows processing ...