Results 51 to 60 of about 889,735 (223)

Shear-Dependent Yield Stress of Iron Ore Fine Tailings in Two-Step Flocculation Process

Advances in Materials Science and Engineering, 2020
Both shear and flocculation have a significant influence on the rheological behavior of tailings, especially the yield stress. In the two-step flocculation process, the above two kinds of actions exist at the same time, and they influence each other.
Ying Yang, Hongjiang Wang, Bern Klein, Aixiang Wu   +3 more
doaj   +1 more source

Kinetics of flocculation of iron oxide particles by hydrolyzed polyacrylamide [PDF]

, 1997
867-873Kinetics of flocculation of iron oxide sol by hydrolyzed polyacrylamide (HPAM) has been studied turbidimetrically. Various kinetic parameters such as the percent flocculation, the flocculation rate and the rate constants for flocculation and ...
Bajpai, A K, Bajpai, S K
core  

Water‐based drilling fluids formulated with mature fine tailings

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract Mature fine tailings (MFT) are persistent, highly stable colloidal suspensions generated as byproducts of bitumen extraction from oil sands. Given their environmental risks, identifying viable applications for MFT could reduce their accumulation while offsetting natural resource use.
Haichao Li, Reza Lashkari, Maen M. Husein   +2 more
wiley   +1 more source

Otimização de sistema de autoaspiração de ar tipo Venturi para tratamento de água ferruginosa Optimization of auto-aspiration aeration system type Venturi for the treatment of ferruginous water

Revista Brasileira de Engenharia Agrícola e Ambiental, 2010
Na confecção deste trabalho se utilizou a metodologia de superfície de resposta para otimizar o efeito do número de Reynolds, tempo de floculação e concentração de hipoclorito de sódio sobre a oxidação/floculação do ferro presente em águas subterrâneas ...
Jeferson S. Piccin, Alessander L. Rissini, Jeferson J. Freddi, Marlo M. Koch, Vandré B. Brião, Marcelo Hemkemeier   +5 more
doaj   +1 more source

Study on the Solution of Sand Slabbing in the Tailing Sand Bin of Huanggang Iron Ore Mine

Advances in Civil Engineering, 2022
In order to improve the tailings utilization rate and realize full tailings’ filling in Huanggang iron mine in Inner Mongolia, a flocculation settlement system was added, which resulted in silting and consolidation of tailings in sand silts.
Xin Zhu, Bokun Zheng, Liang Peng, Fengfeng Wu, Xuyan Yin, Yang Liu, Xin Yang   +6 more
doaj   +1 more source

Critical mineral removal from mining‐impacted waters using microalgal biomass

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract Rising demand for critical minerals has led to increased mining and mineral processing activities, resulting in the release of metal‐contaminated waters requiring treatment. Conventional treatment methods, such as lime neutralization, effectively precipitate metals; however, they are less effective at low metal concentrations and produce large
Sean Nickson, Corey A. Laamanen, John A. Scott   +2 more
wiley   +1 more source

Enhancement of the Plant‐Accessible Phosphate Fraction in Sewage Sludge Ashes by Na+ or K+ Addition Prior to Combustion

ChemSusChem, Volume 18, Issue 6, March 15, 2025.
The addition of Na2CO3 or K2CO3 to sewage sludge prior to combustion leads to the production of ashes containing phosphate in the form of buchwaldite‐like phases (Ca(Na/K)PO4). Compared to conventional sewage sludge mono‐ashes, such Na‐ or K‐ashes show greatly increased P‐solubilities and proved to be potent P‐fertiliser materials in greenhouse ...
Lorenz Bier‐Schorr, Viktoria Gräser, Michael Scherer‐Lorenzen, Peter Hajek, Philipp Kurz   +4 more
wiley   +1 more source

Zeta potential and flocculation behavior on iron ore fines using magnafloc polymers. [PDF]

, 1990
The flocculation behavior of iron ore fines using Magnafloc polymers as flocculants was studied along with zetapotential measurements.Correlation between zetapotential data and flocculation was examined and discussed.The mechanism of flocculant ...
Khangaonkar, P R, Bhaskar Raju, G, Balasubramanian, K J   +2 more
core  

Tuning Colloidal Stability and Photothermal Conversion Efficiency of Graphite Nanofluids via Anionic‐Nonionic Surfactant Engineering

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Graphite nanofluids were stabilized using a mixed SDS/Tween 80 surfactant system. The optimized formulation exhibited enhanced colloidal stability, red‐shifted UV–Vis absorption, and improved photothermal conversion under solar irradiation. Achieving stable dispersion of graphite flakes (GFs) in aqueous media remains a critical challenge in developing ...
Ahmad Chehade, Shoaib Anwer, Md Islam, Eiyad Abu‐Nada   +3 more
wiley   +1 more source

Towards the identification of humic ligands associated with iron transport through a salinity gradient

Scientific Reports, 2022
Humic ligands from boreal rivers have been identified as important sources of iron-binding ligands to the coastal marine environment but remain poorly characterized.
Kavi M. Heerah, Heather E. Reader
doaj   +1 more source