Abstract Sand-bentonite-cement are commonly used as cut-off walls to isolate polluted soils or in ground improvement technologies and retaining structures secant pile wall. In this research, a laboratory program consisted from 105 sample were prepared tested between different tests, such hydraulic conductivity, porosity, compressive strength monitor the mechanical behavior of sand-bentonite-cem...

Highly compacted bentonite buffers are planned to be used as engineered barriers in the near-field of nuclear waste repositories in crystalline formations. The erosion of these bentonite buffers at the boundary to the surrounding Excavation Disturbed Zone (EDZ) can be a source of colloids leading to a notable concentration of colloids in the EDZ water, which is high above the natural colloid co...

Chitin has wide range of applications as a biomaterial, but barriers still exist to its broader use due to its physical and chemical limitations. The present study evaluated the properties of polymeric blend films obtained from chitin and bentonite (Zeolite mineral) by the casting/solvent evaporation method. The cross linking agents formaldehyde and glutaraldehyde were incorporated into the pol...

Bentonite is a common backfill material used in Engineered Barrier Systems (EBS) for radioactive waste disposal. Its thermal, hydraulic, and chemical properties have been extensively studied. However, empirical evidence on the interactions with free gas phase present its pore space under conditions close to those prevailing deep geological repositories (i.e., exposure multiple species at temper...

The aim of this study was to investigate removal efficiency heavy metals and the adsorption capacity natural Ca-bentonite, as well thermally acid-activated Ca-bentonite (with HCl H2SO4) for metal ions Cr(III), Ni(II) Pb(II). adsorbent used is bentonite from Shipovo (Šipovo mine), Bosnia Herzegovina. results show that ion using at a satisfactory level. Thus, highest percentage tested concentrati...

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, ...

The model system consisted of bacteriophage MS-2, bentonite clay, and hypochlorous acid (HOC1). Factors that influenced association of the bacterial virus with bentonite were the titer of unadsorbed viruses, clay concentration, cation concentration, temperature, stirring rate, and the presence of soluble organics. Variation of the kinetic adsorption rate constant with stirring speed indicates t...

The impact of LCFA adsorption on the methanogenic activity was evaluated in batch assays for two anaerobic granular sludges in the presence and absence of bentonite as synthetic adsorbent. A clear inhibitory effect at an oleate (C18:1) concentration of 0.5 g(C18:1) L(-1) was observed for both sludges. Palmitate (C16:0) was confirmed to be the main intermediate of C18:1 degradation in not adapte...

this study sougth to the effect of occ pulp fractionation on produced paper strength properties improvement. using a pressure screen, occ pulp was devided to tow distinct fractions of accept ratio (short fibers) and reject ratio (long fibers) in accordance with optimum condition of fractionation based on the previous studies. in the next stage, long fiber stream was refined and recombined with ...