Cement bentonite interactions need to be studied since they will occur in deep geological repositories.They are specifically relevant in the clay host rock reference concept. The reactivity of a Mg-homoionicFEBEX bentonite was studied at 60 oC in contact with a young cement water characterized by the leachingof alkaline hydroxides (K/Na 4/1 –OH, pH = 13.5 at 25 oC) and with an e...

One of the requirements of a system for disposal of spent nuclear fuel is that it should be possible and feasible to retrieve the canisters even after they have been put in place and the surrounding bentonite has absorbed water and developed a swelling pressure. This ‘gripping’ of the canister must be released before the canister can be retracted from the deposition hole. One way to achieve thi...

polyanionic cellulose polymer is used as an additive in drilling mud in order to decrease water loss and mudcake- thickness. in this study effect of bulk and nanosize polyanionic cellulose on water loss and mud-cakethickness in mud drilling is investigated. polyanionic cellulose nanoparticles are made by using of ball milling. size of nanoparticles is measured by particle size analyzer. polyani...

The present work aims to investigate the effect of sulphanilamide (SA) adsorption on the zeta potential and water loss of raw local bentonite (B) and Na-bentonite (Na-B) suspensions. This was accomplished by separating the fine particles of raw bentonite of size (< 1μm), then activating them by Na+ ions. Adsorption isotherms of SA on B and Na-B were obtained at different SA concentrations rangi...

Six ruminally cannulated steers, five Holsteins and one Hereford (250 to 295 kg), were fed 84% forage sorghum silage plus 16% supplement or 50% forage sorghum silage plus concentrate and supplement diets containing either no addition (controls), 1% sodium bicarbonate (NaI-1CO 3 ) or 2% sodium bentonite in a 2 X 3 factorial arrangement of treatments in a 6 • 6 Latin-square experiment with 3-wk p...

application of hyperactivation process in palletizing iron ore, in order to decrease bentoniteconsumption has been investigated. different amounts of bentonite and sodium hydroxide, as activating agents,were added to iron ore and the quality of formed pellets were determined. the results show that addition of 0.01pct. naoh improves the pellet quality significantly while the bentonite content re...

Mud Recycle is a process option for cane diffuser factories; it eliminates the need for a filter station by using the bed of shredded cane in the diffuser to separate out mud solids from the juice. This paper describes the Mud Recycle system at Maidstone mill and presents the results of a Mud Recycle trial that was carried out during the 1998 season. Maidstone switched to Mud Recycle on a perma...