Physico-chemical processes of organic pollutants occurring in water, reclaimed wastewater, soils and sediments.

Multiphase and reactive fluid flow in the subsurface.

Solitons, diffraction of wave packets, fingering phenomena.

Interactions between soil, water and vegetation in drylands, soil salinization/sodification, dynamics of nitrogen in the soil.

Interactions between soil, water and vegetation in drylands, soil salinization/sodification, dynamics of nitrogen in the soil.

Physical chemistry of soils and clays; soil and clay interfacial reactions; adsorption and transformation of natural and anthropogenic compounds by clays.

Soil-root interactions and water and nutrient uptake, Spectral induced polarization for non-invasive detection of rhizosphere processes.

Soil chemistry and soil fertility, related to plant nutrition and environmental aspects

Soil-plant-atmosphere continuum, Atmospheric chemistry, Air pollution, Cloud microphysics.

Formation of water repellent soils by irrigation, Effect of contact angle on water flow in soils, Plant-water relationships, Irrigation control.

Water Treatment and Pollution Control Technology.

Wastewater reclamation and reuse, effects on soil geochemistry, Soil pollution by heavy metals, Long-term soil deterioration processes.

Physical chemistry of humic substances, minerals and their interactions, Effects of organic matter on soil fertility and structure.

Flow in porous media, hydrology, soil-water relations, hysteresis, theoretical modeling of soil properties.

Water purification from organic and inorganic contaminants and microorganisms by micelle-clay and organo-clay complexes.

Environmental salinity and drought stresses: yield transpiration relation- ships, modeling, and management of irrigation and environment protection.