Abstract: A composition having a pH of less than 7 and including one or more surfactants, one or more chelating agents, and one or more acid in an aqueous solvents is used to treat stains on a textile caused by sunscreen lotion. Sunscreen stains in textiles can be reduced to a ?b* of 5 or less as compared to the textile before staining. The method includes preparing a use solution having a pH of less than 7 by applying to the wash solution a solid composition comprising about 15 to about 60 wt-% of surfactants; about 4 to about 18 wt-% chelating agents; and about 10 to about 40 wt-% of an acid or a salt thereof, and washing the textile in the wash solution, where the method is capable or reducing the stain in the textile to a ?b* of 7 or less as compared to the textile before staining.

Abstract: A composition having a pH of less than 7 and including one or more surfactants, one or more chelating agents, and one or more acid in an aqueous solvents is used to treat stains on a textile caused by sunscreen lotion. Sunscreen stains in textiles can be reduced to a ?b* of 5 or less as compared to the textile before staining. The method includes preparing a use solution having a pH of less than 7 by applying to the wash solution a solid composition comprising about 15 to about 60 wt-% of surfactants; about 4 to about 18 wt-% chelating agents; and about 10 to about 40 wt-% of an acid or a salt thereof, and washing the textile in the wash solution, where the method is capable or reducing the stain in the textile to a ?b* of 7 or less as compared to the textile before staining.

Abstract: An anode-supported tubular fuel cell stack includes interconnect structures that are oxidation resistant at high temperature, flexible to accommodate thermal expansion stress and to provide strong electrical contact, have low electrical resistance, and are inexpensive and light weight. The interconnect structures may be formed out of metal sheet, which provide improved heat homogeneity throughout the fuel cell stack because of the high thermal conductivity of the metal. The interconnect structures are further shaped to provide resilience or spring-like features to allow movement between the tubular cells. Thus good electrical contact, thermal stress release, and shock absorption are simultaneously achieved.

Abstract: A method and a system for the co-production of electricity and hydrogen fuel are provided. The system may include a fuel conditioning unit, two or more iron/iron oxide beds and a high temperature electrochemical generator. In one embodiment, a reduction bed contains iron oxides. A hydrocarbon fuel, such as natural gas, is conditioned to carbon dioxide and hydrogen by the reduction bed. The conditioned fuel is then converted electrochemically to generate electricity in a fuel cell. Operating simultaneously is an oxidation bed that oxidizes elemental iron to iron oxides and produces hydrogen. The oxidation bed may previously have served as the reduction bed. The hydrogen thus produced is sufficiently pure to be used in a refueling application. The heat necessary for the endothermic reduction may be provided by the high temperature electrochemical generator. The two beds may operate concurrently or sequentially, and alternate their roles when their reactants are partially exhausted.