Geosynthetic clay liners (GCLs) have become a suitable substitute for compacted used prevention of leachate percolation from landfills and tailings dams into the groundwater system. The characteristics most bentonites is improved through process activation by mixing with soda ash (Na2CO3). This paper presents investigation results suitability Imerys Mine in South Africa use GCLs. Both activated...

Drilling fluid is the most important lifeline of the drilling operation, that main task is facilitate the cuttings removal of the drilling. There are varieties of drilling fluids such as sodium bentonite based-drilling fluid is called “mud” and drilling foam or surfactant based-drilling fluid is called “soap”. The present work aims are study on the modified drilling mud properties by using the ...

Microbial sulfate reduction possesses a potential risk for the long-term safety of spent nuclear fuel repositories because under expected repository conditions sulfide is main corroding agent copper and copper-coated steel canisters foreseen in Scandinavian disposal concepts. It thus essential to understand quantify processes factors impacting microbial production within around compacted benton...

Radiation treatment in the presence of catalysts such as anatase, P25 and bentonite showed an efficient removal of TCE and PCE compared with gamma-irradiation only. The gamma-ray pretreatment of P25 and bentonite enhanced the decomposition of TCE and PCE, respectively. The change of the catalysts by gamma-ray was characterized by EPR spectra. For anatase and bentonite, the peaks in the spectra ...

Danger waste disposal systems are typically comprised a series of barriers that act to protect the environment and human health. The presence of several barriers enhances confidence that the waste will be adequately contained. This article is focused on one of barriers, bentonite buffer. Bentonite buffer intervene between the waste canister and the host rock. One of main tasks of the bentonite ...

BACKGROUND Haemorrhage remains the greatest threat to life on the battlefield, accounting for half of all deaths. Over the past decade the US army has widely studied new technologies for stopping sever haemorrhages and has introduced an effective zeolite based haemostatic agent. In this paper the bio-stimulatory effect of burned radioactive lantern mantles powder as well as two minerals; benton...

The presence of long-lived radionuclides in natural aquatic systems is of great environmental concern in view of their possible migration into biospheres of mankind. Trivalent actinides such as (241/243)Am can contribute a great deal to radioactivity for several thousand years. This migration is significantly influenced by various factors such as pH, complexing ions present in aquatic environme...

Olive oil is concentrated in the Mediterranean basin countries. Since the olive oil industries are incriminated for a high quantity of pollution, it has become imperative to solve this problem by developing optimized systems for the treatment of olive oil wastes. This study proposes a solution to the problem. Burned olive waste ash is evaluated for using it as clay stabilizer. In a laboratory, ...

Bentonite modified with ferrocyanides of Fe, Cu and CuK was tested for sorption of Cs137 and Sr-90 and proved to be highly selective for Cs; ferrocyanides of Cu and CuK are also good sorbents for Sr. Bentonite modified with hydroxides of Ti, Sn and Sb are good for Sr removal.