Abstract: An invention for removing arsenic from contaminated soil is described. The process of this invention involves contacting contaminated soil with a carbonated solution either formed by bubbling carbon dioxide through water or dissolving in alkali metal carbonate in water for contact of the contaminated soil. The supernatent solution resulting can then be treated to remove the arsenic, preferably with reverse osmosis, for further use of the water and the decontaminated soil returned to the environment.

Abstract: A process for treating arsenic-containing aqueous waste is described wherein the aqueous waste, treated if necessary to minimize the presence of materials which reduce the efficiency of reverse osmosis membranes, is passed through an ultrafilter to remove solids followed by a chemical treatment to adjust the pH to range from about 6 to 8 and to add antiscalants and antifouling materials, then following to subject the chemically treated filtrate to a reverse osmosis process to result in a permeate stream having less than about 50 parts per billion arsenic.

Abstract: An apparatus is described for applying a liquid to treat the nap and backing of a rug or carpet. The applicator having a cylindrical body enclosing a hollow reservoir with teeth extending from inside the reservoir outwardly through the body such that the nap of the rug is penetrated to apply liquid to the backing of the rug. The teeth and, optionally, the cylindrical body are porous, allowing the treating liquid to migrate from the reservoir to the surface to be treated as the apparatus is moved across the surfaces.

Abstract: A comb is disclosed that may be used for applying liquid to both scalp and hair and which may is effective regardless of the orientation of the comb. The liquid is retained in the comb in a porous wick-like material and the liquid dispensing teeth are a porous wick-like material so that capillary action ensures a continuous, regulated flow of liquid regardless of the orientation of the comb.