Title: Stripping (chemistry)
Content: would be the removal of TBT and PAH contaminants from harbor soils. The soils are dredged from the bottom of contaminated harbors, mixed with water to make a slurry and then stripped with steam. The cleaned soil and contaminant rich steam mixture are then separated. This process is able to decontaminate soils almost completely. Steam is also frequently used as a stripping agent for water treatment. Volatile organic compounds are partially soluble in water and because of environmental considerations and regulations, must be removed from groundwater, surface water, and wastewater. These compounds can be present because of industrial, agricultural, and

Title: Agathis australis
Content: acidic compounds are liberated. In a process known as leaching, these acidic molecules pass through the soil layers with the help of rainfall, and release other nutrients trapped in clay such as nitrogen and phosphorus. This leaves these important nutrients unavailable to other trees, as they are washed down into deeper layers. This process is known as podsolization, and changes the soil colour to a dull grey. For a single tree, this leaves an area of leached soil beneath known as a "cup podsol". This leaching process is important for kauri's survival as it competes with other species for space.

Title: Wet processing engineering
Content: materials. Carboxymethyl cellulose (CMC) and Poly vinyl alcohol (PVA) are often used as sizing materials. Scouring is a chemical washing process carried out on cotton fabric to remove natural wax and non-fibrous impurities (e.g. the remains of seed fragments) from the fibers and any added soiling or dirt. Scouring is usually carried in iron vessels called kiers. The fabric is boiled in an alkali, which forms a soap with free fatty acids (saponification). A kier is usually enclosed, so the solution of sodium hydroxide can be boiled under pressure, excluding oxygen which would degrade the cellulose in the fiber. If

Title: John D. Hamaker
Content: Rivera produced the book and video, "Manual Práctico ABC de la Agricultura Orgánica y Harina de Rocas", which described how to regenerate overcultivated soils with rock dust. The science was developing in Germany, Canada and USA, and being researched in Brazil, Tanzania and the Canary Islands. Other university researchers included professors William Fyfe and Ward Chesworth. The science of agrogeology is the study of natural geological materials suitable for restoring soils as an alternative to chemical fertilizers, particularly for worn out tropical soils. Due to intense tropical rainfall, chemical fertilizers are washed away from laterite soils within weeks, and cannot

Title: Phytoremediation
Content: crops to achieve a significant cleanup. After the process, the cleaned soil can support other vegetation. Mining of these extracted metals through phytomining, is also being experimented with as a way of recovering the material. Hyperaccumulators are plants that can naturally take up the contaminants in soil unassisted. In many cases these are metallophyte plants that can tolerate and incorporate high levels of toxic metals. Induced or assisted phytoextraction is a process where a conditioning fluid containing a chelator or another agent is added to soil to increase metal solubility or mobilization so that the plants can absorb them more

Question: What is the name of the process by which substances are washed out of the soil?
Answer: Leaching