Results 91 to 100 of about 64,821 (238)

Water‐based drilling fluids formulated with mature fine tailings

open access: yesThe 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   +2 more
wiley   +1 more source

Surface characteristics and taxonomy of brewing yeasts.

open access: yesKvasný průmysl, 2014
This study deals with the taxonomy of brewing yeasts, methods of their classification and identification. The hybrid character of brewing yeasts is highlighted, along with related problems in their classification.
Jana KOPECKÁ   +2 more
doaj   +1 more source

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

open access: yesChemSusChem, 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   +4 more
wiley   +1 more source

Caractérisation des phénomènes d'auto-floculation, de bio-floculation et de co-floculation des microalgues dans un chenal algal à haut rendement (synthèse bibliographique)

open access: yesBiotechnologie, Agronomie, Société et Environnement, 2014
Auto-flocculation, bio-flocculation and co-flocculation of microalgae. A review. Recovery of microalgae is one of the main technological and economic concerns in a High Rate Algal Pond because of the small size, the negative surface charges and the low ...
Baya, DT.   +4 more
doaj  

100% Selective Photoreduction of CO2 to CO on a Macroscopic CuO/Au/g‐C3N4 Film Enabled by Synergistic Photothermal and p‐n Heterojunction Effects

open access: yesEcoEnergy, EarlyView.
In this paper, a novel CuO/Au/g‐C3N4 film catalyst achieved ≈ 100% selective CO2 photoreduction to CO via synergistic photothermal and p‐n heterojunction effects. ABSTRACT Steering product selectivity is a paramount challenge in CO2 photoreduction. Herein, a series of macroscopic p‐n heterojunction photocatalysts, composed of the g‐C3N4 shell coated on
Wenwen Li   +7 more
wiley   +1 more source

Gypsum flocculation experiment in river Paimionjoki, Finland, 2022

open access: yes
A laboratory experiment was conducted to investigate gypsum induced flocculation of dissolved organic matter in a boreal river Paimionjoki in south-western Finland in April, May, June and August 2022.
Asmala, Eero   +4 more
core   +1 more source

Colloidal stability for concentrated zirconia aqueous suspensions [PDF]

open access: yes, 2009
This work started as part of an investigation into the mechanisms by which fine zirconia aqueous dispersions can be processed for ceramic materials engineering.
Guizard, Christian   +8 more
core   +1 more source

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

open access: yesENERGY &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   +3 more
wiley   +1 more source

Kinetic aspects of polymer bridging: equilibrium flocculation and nonequilibrium flocculation.

open access: yes, 1989
We carried out a detailed study of the flocculation of polystyrene latices by poly (ethylene oxide) with a specially designed single particle optical sizer.
Fleer, G.J.   +2 more
core   +1 more source

Quantitative Insights into Atomic Scale Oil–Clay Adhesion Governing Shale Oil Retention and Mobility

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Atomic force microscopy reveals a clear adhesion hierarchy between shale oil and clay minerals, governed by nanoscale surface chemistry. Strong interactions on chlorite and illite arise from abundant polar sites and cation bridging, whereas weaker coupling on montmorillonite limits interfacial binding.
Chen Lv, Guanwen Lu, Guandong Su
wiley   +1 more source

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