Abstract: A product and method for the removal of pollutant heavy metals from aqueous solutions which precludes the end user from storing, handling, feeding and controlling hazardous soluble sulfide materials. The product is a slurry which includes a mixture of a liquid medium and an essentially insoluble salt wherein the salt is the reaction product of heavy metal ions, preferably selected from Mn++ ions, Fe++ ions, and Fe+++ ions, and sulfide ions derived from soluble sulfide sources such as sodium sulfide, hydrogen sulfide, and sodium hydrosulfide. Addition of the subject slurry to a wastewater stream will effect the precipitation of heavy metals with lesser equilibrium sulfide ion concentrations than that of the essentially insoluble salt. Solids collected by this method may be returned to subsequent wastewater streams for additional removal of heavy metals by any excess heavy metal sulfide salt.

Abstract: The present invention is directed primarily to an interlinked crystalline solid polyethylene glycol composition (I-PEG) having a molecular weight of at least 20 kDa and a melting temperature of at least 40° C. and its use as an absorbable device having hydrolabile ester or carbonate interlinks that allow in vivo dissociation of the interlinked chain into excretable, low molecular weight PEG segments.

Abstract: A composition and method are provided for coloring live bait such as minnows and the like which include dispersing a biological stain, an alkaline agent and a salt in a preferably aqueous carrier medium. The bait is immersed in the solution for a period of time dependent on the degree and length of time of coloring desired. The active ingredients preferably comprise no more than about 0.15% by weight of the total solution. Also disclosed is a pressed tablet, preferably an effervescing tablet, which disperses the active ingredients upon immersion in the carrier medium.