Results 21 to 30 of about 595,197 (200)

Effect of Bentonite Prehydration Time on the Stability of Lightweight Oil-Well Cement System

open access: yesGeofluids, 2021
Lightweight cement systems are used in the weak intervals of petroleum wells. Sodium bentonite is used as an extender in lightweight oil-well cement systems as it prevents excess water and sedimentation of particles, thereby ensuring the formation of ...
Stephen Adjei   +2 more
doaj   +1 more source

EVALUATION OF THE BENTONITE CONTENT IN SPENT FOUNDRY SANDS AS A FUNCTION OF HYDRAULIC CONDUCTIVITY COEFFICIENT [PDF]

open access: yesTecnologia em Metalurgia, Materiais e Mineração, 2013
This study evaluates the relationship of the bentonite content and hydraulic conductivity coefficient (k) of waste foundry sands in tests of hydraulic conductivity in a flexible wall permeameter.
Schirlene Chegatti   +4 more
doaj   +1 more source

Regeneration Feasibility of Bentonite by Sodium Persulfate

open access: yesTrends Journal of Sciences Research, 2021
Among natural materials, clays occupy a prominent position being low cost, available in abundance, environmentally friendly, and having good adsorption properties. Bentonite, which has strong affinity towards cationic dyes such as methylene blue (MB) is able to remove dye effectively.
Syahida Farhan Azha   +2 more
openaire   +2 more sources

Surface Modification, Characterization and Photocatalytic Performance of Nano-Sized Titania modified with Silver and Bentonite Clay [PDF]

open access: yes, 2009
In many textile industries dyes are used as coloring agents. Advanced oxidation processes are used for degrading or removing color from dye baths. Catalysts play a key role in these industries for the treatment of water.
Asim, K. Jana   +2 more
core   +1 more source

BENTONITE - WATER SUSPENSIONS: THE IMPACT ON THE PROTEIN STABILITY OF ISTRIAN MALVASIA WINES [PDF]

open access: yesPoljoprivreda, 2012
Bentonite is an important enological agent in the white wines production. The effect of three bentonite types (sodium, calcium and sodium / calcium) and two types of water (tap / hard; distilled / soft) was investigated on the doses of bentonite required
Tomislav Plavša, Ingrid Palman
doaj  

Ca-bentonite/polymer blends to compose GCLs for effective containment of mining leachates [PDF]

open access: yesE3S Web of Conferences
This study investigates the swelling potential of blends of a Brazilian sodium-activated calcium bentonite with linear structure polymers and a cross-linked structure polymer in contact with aggressive mining solutions (sodium hydroxide, calcium chloride,
Silva Debora T. V.   +3 more
doaj   +1 more source

Bentonite-loess slurry for construction of diaphragm walls and bored piles

open access: yesRoads and Bridges, 2020
Bentonite fluids are used in narrow excavations in technologies of slurry walls and bored piles. If bentonite is characterised by high liquid limit, production of support fluid with sufficiently high density and accompanying low viscosity is impossible ...
Marcin Dreger   +5 more
doaj   +1 more source

Swelling characteristics of Gaomiaozi bentonite and its prediction

open access: yesJournal of Rock Mechanics and Geotechnical Engineering, 2014
Gaomiaozi (GMZ) bentonite has been chosen as a possible matrix material of buffers/backfills in the deep geological disposal to isolate the high-level radioactive waste (HLRW) in China. In the Gaomiaozi deposit area, calcium bentonite in the near surface
De'an Sun, Wenjing Sun, Lei Fang
doaj   +1 more source

Dead-end and crossflow microfiltration of yeast and bentonite suspensions: experimental and modelling studies incorporating the use of artificial neural networks [PDF]

open access: yes, 2008
The applicability of artificial neural networks (ANNs) and semi-empirical modelling techniques for correlation and prediction of the filtration characteristics of microfiltration systems was assessed.
Ní Mhurchú, Jenny
core   +2 more sources

Study of the interaction between polysaccharides and bentonite [PDF]

open access: yes, 2022
openLa bentonite è uno dei principali e più utilizzati coadiuvanti nel settore enologico, noto per la sua azione chiarificante e stabilizzante nel vino.
ROMA, NICOLA
core  

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