Aqua Metals Inc.

Other

Luxfer Group Limited

Electrochemical Design Associates, Inc.

Geo-Kinetics International, Inc.

Stephen R Clarke

Robert Lewis Clarke

Michael David Hurwitz

Michael John King

Brian J Dougherty

Brian C Dougherty

Selwyn Mould

Richard H Clarke

Clive J Butler

Roderick Murdock

Sam Mohanta

Wieberen Pool

Reinout Lageman

Selwyn John Mould

Lead from lead acid battery scrap is recovered in two separate production streams as clean grid lead and as high-purity lead without smelting. In preferred aspects, lead recovery is performed in a continuous process that uses an aqueous electroprocessing solvent and electro-refining. Spent electroprocessing solvent and/or base utilized to treat lead paste from the lead acid battery scrap can be recycled to the recovery process.

Devices and method for smelterless recycling of lead acid batteries

A closed loop electrochemical process of recovery of high-purity lead uses continuous formation of adherent lead on a cathode from an electrolyte that is used to dissolve desulfated lead paste. Preferred cathodes include aluminum containing cathodes that are operated in methane sulfonic acid to produce a micro- or nanoporous mixed matrix metallic composition and lead dioxide formation at the anode is avoided using appropriate anode configurations or operating conditions

Closed loop systems and methods for recycling lead acid batteries

The inventive subject matter is directed to continuous electrochemical production of highly pure micro- or nanostructured lead that at least partially encloses the electroprocessing solvent and molecular hydrogen and optional guest compounds to form a mixed matrix. Such compositions are particularly suitable for cold forming of various structures and/or for alloy and composite material production.

Electrodeposited lead composition, methods of production, and uses

Lead from lead acid battery scrap is recovered in two separate production streams as clean grid lead and as high-purity lead without smelting. In preferred aspects, lead recovery is performed in a continuous process that uses an aqueous electroprocessing solvent and electro-refining, and spent electroprocessing solvent can be recycled to the recovery process.

Lead from lead acid battery scrap is recovered in two separate production streams as clean grid lead and as high-purity lead without smelting. In preferred aspects, lead recovery is performed in a continuous process that uses an aqueous electroprocessing solvent and electro-refining and spent electroprocessing solvent can be recycled to the recovery process.

Method for smelterless recycling of lead acid batteries

Compositions, devices, and methods of stabilizing Magneli phase materials are presented where the modified materials have a host phase and a locking phase in which locking compounds prevent rearrangement of a Magneli shear plane to a rutile structure and so prevent or reduce the oxidation of the Magneli phase material.

Devices and methods for advanced phase-locked materials

A media is used to remove species from aqueous solutions, particularly in the treatment of water to enable it to be suitable for drinking. The media includes a material selected from the group consisting of zirconium hydroxide, titanium hydroxide, hafnium hydroxide and combinations thereof. A preferred form of the media is a layer having an aspect ratio of at least 1:1, more preferably, at least about 10:1. Removed from the water are species selected from the group consisting of arsenate, selenate, chromate, borate, perchlorate, fluoride and combinations thereof. In particular arsenite (As ) containing species are also removed from water. Arsenite may be removed from water to levels not greater than 10 parts per billion with a single exposure to the media. The media is selective for certain species over others. The arsenite component is removed despite a presence of at least one competing species selected from the group consisting of sulphate, phosphate, nitrate, bicarbonate, iron, carbonate, nitrite, silicate, sulphite, chloride, bromide and iodide. The media is preferably in powder form while used to treat water. The media may be employed in a variety of devices including cartridge type water filters and a filter press.

Water treatment method and apparatus

A method and an apparatus for stripping ionic species from a porous material, such as concrete or soil, are presented. The ionic species include metals and complexes, and may include radioactive species. The contaminated medium can be in bulk or in particulate form and can be treated according to the invention in situ or in a batch container. In the method, a dc potential difference is established across the contaminated material over which an alternating current may be superimposed. Ionic species migrate within the contaminated material under the influence of the potential difference and dissolve in the electrolyte. The electrolyte can be protected from radiation degradation by use of a radioactive-resistant ion exchange material. Ionic species can be desorbed electrochemically from the electrolyte, allowing the electrolyte to be recycled for additional stripping of contaminated media. The recovered ionic species can be used as feedstock for other processes. The apparatus preferably includes an electrolytic material, means for electrochemically regenerating the electrolytic material, noncorroding electrodes capable of sustaining a current that is reverse of that which induces ionic species to migrate from contaminated medium and a power supply for establishing a potential difference across the contaminated material. Salt precipitation on the electrodes and within the medium are avoided. Neutral zones within the medium are also eliminated.

Apparatus for stripping ions from concrete and soil

An integrated electrochemical soil remediation method and apparatus for treating contaminated soils, especially those contaminated with mixtures of nonvolatile organic contaminants, ionic contaminants and volatile organic compounds are disclosed. Remediation may be achieved by electrochemically enhancing biodigestion of organic contaminants (using microorganisms present in or added to soil), electrochemically removing ionic contaminants and electrochemically removing volatilized organic contaminants by applying a vacuum over the soil being treated, as dictated by the nature of contamination. Physicochemical conditions of the electrolyte and the soil are managed by monitoring and adjusting the electrolyte. Nutritional needs of microorganisms for biodigestion are adjusted as necessary through the electrolyte.

Growing community of inventors

Orinda, CA, United States of America

Stephen R Clarke