Transient changes in wettability complicate the prediction of biochar's hydrologic effects. Biochar wetting properties were characterized from poultry litter biochar (PLBC) produced from slow pyrolysis at temperatures between 300 and 600°C with water drop penetration time (persistence of hydrophobicity) and contact angle (CA; severity of hydrophobicity) measurements. Hydrophobicity was associat...

Proton NMR (nuclear magnetic resonance) measurements were made of T1 and T2 relaxation times of water in saturated sands containing varying amounts of sorbed oil on the grain surfaces. The porosity, surface area, and grain density of the sands and the relaxation times of the extracted pore water were also determined experimentally. Sorption of oil changed the relaxation time of water in the sat...

Many antibiotics regarded as emerging contaminants have been frequently detected in soils and groundwater; however, their transport behaviors in soils remain largely unknown. This study examined the transport of two antibiotics, sulfamethoxazole (SMZ) and ciprofloxacin (CIP), in saturated porous media. Laboratory columns packed with quartz sand was used to test the effects of solution pH and io...

Purpose. Kinetics research and description of drying by microwave radiation mechanism development quartz sand its mixes with sodium silicate in limited quantity water steam medium. Methodology. Distilled water, solute have been used this research. Study has performed on samples weighing 200 g. Mixtures structuring power 700W frequency 2.45 GHz air saturated 1 g Accuracy temperature measurement ...