Monsanto Company

Solutia Incorporated

Monsanta Company

Michael A Heitkamp

Daniel Eric Steinmeyer

Richard A Kimerle

William J Adams

M Joan Brackin

Laurence E Hallas

George C Stow

A method for reducing the toxicity, bioaccumulation and concentration of chemicals in surface water sediments and water using a retrievable organic carbon scavenger is disclosed. The scavenger is comprised of a porous polymeric material, optionally containing an adsorbent such as activated carbon, and may exist in the form of beads, sheets, fibers, netting or other similar forms. The material is placed in contact with the sediment, toxic compounds are absorbed from the sediment, and may be retrieved for regeneration or disposal.

Retrievable organic carbon scavengers for cleaning of contaminated

Porous biosupports for the support of microorganisms which are used in the biotreatment of an aqueous waste stream comprising a polymeric material and, optionally, fiber reinforcement, adsorbent material and/or inorganic filler wherein the biosupport has a specific gravity greater than the specific gravity of water and pores of sufficient diameter to enable microorganisms to readily colonize within the pores, a process for preparing same, and processes for biodegrading an aqueous waste stream containing organic contaminants utilizing the porous biosupports.

Porous polymeric biosupports

A method for treatment of a liquid waste stream having an undesirably high COD and comprising water and a concentration of organic nitrogen compounds of at least about 300 mg/l total kjedahl nitrogen is disclosed. According to the method, the liquid waste stream is oxygenated to produce an oxygenated liquid containing water, dissolved oxygen and the organic nitrogen compounds and the oxygenated liquid is passed through a fluidized bed reactor containing a fluidized bed of particulate solids supporting microorganisms capable of biodegrading the organic nitrogen compounds, thereby to subject the organic nitrogen compounds in the oxygenated liquid to aerobic microbial degradation and to produce an effluent containing water, ammonia and carbon dioxide, and the fluidized bed reactor contents and the effluent is maintained at a pH in the range of from about 6 to about 8.

Use of fluidized bed reactors for treatment of wastes containing organic

A process is provided for the degradation of N-phosphonomethylglycine. A mixed culture of microorganisms (ATCC 55050) is attached to an inert, immobile support, and then contacted with an aqueous solution of N-phosphonomethylglycine for a sufficient time to degrade the N-phosphonomethylglycine. One of the microorganisms in the mixed culture was identified as Moraxella anatipestifer (ATCC 55051).

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Ballwin, MO, United States of America

Michael A Heitkamp