In Rwanda, the traditional fired solid bricks embody high fuel consumption and quantity of clay during their molding. Traditional are also heavy compared to perforated bricks. This study aimed at investigating performance made soil (CS) mixed with charcoal waste (CW) as an additive. The physical, chemical mechanical properties CS 0, 10, 30, 40 50% CW were determined. extruded manually inclusion...

Sodium hexa-titanate (Na(2)Ti(6)O(13)) nanofibers, which have microporous tunnels, were prepared by heating sodium tri-titanate nanofibers with a layered structure at 573 K. The void section of the tunnels consist of eight linked TiO(6) octahedra, having a quasi-rectangular shape and the sodium ions located in these tunnel micropores are exchangeable. The exchange of these sodium ions with diva...

It is assumed to be common knowledge that multivalent cations cross-link soil organic matter (SOM) molecules via cation bridges (CaB). The concept has not been explicitly demonstrated in solid SOM by targeted experiments, yet. Therefore, the requirements for and characteristics of CaB remain unidentified. In this study, a combined experimental and molecular modeling approach was adopted to inve...

Abstract The study aimed to investigate the temporal changes of pH, sorption complex, and structure soil organic matter through forest profile under beech spruce forests located in Jizera mountains (Czech Republic) affected by natural anthropogenic acidification. Soil samples were collected four different years (2008, 2013, 2015, 2020) each horizon: fermented horizons (F), humified (H), organo-...

Interactions between organic species and natural minerals are fundamental to the processes around us. With aid of molecular dynamics simulations, we identify key adsorption mechanisms apigenin on smectite clay minerals. The mechanism is highly sensitive pH -- changing from co-crystallisation in acidic-to-neutral solutions ion-bridging mild-alkaline. ionic play a significant role alkaline enviro...

small amounts of water to soil reduced the sorption of organic compounds relative to the sorption by the In soils, organic matter and minerals are often associated such that dehydrated soil in hexane, and that organic vapor adit is unclear how the presence of the former component influences sorption by soil was significantly depressed by increasing the sorptive properties of the latter one. In ...