A disinfectant device including a pouch, the pouch including a first layer of material coupled to a second layer of material and defining a compartment therebetween. At least one dry reactant is retained within the compartment, the at least one dry reactant producing chlorine dioxide gas when exposed to water. A wick is at least partially disposed within the compartment. At least one from the group consisting of the first layer of material and the second layer of material define an array of ports along a periphery of the pouch and an array of fluid conduits, the array of fluid conduits being proximal to the array of ports, offset from the array of ports, in fluid communication with the wick, the compartment, and the array of ports.

The present invention provides a safe, disposable and biodegradable chlorine dioxide micro generator that uses water soluble paper and hydrogel or compressed cellulose encased in filter paper pouch. The chemicals are kept in a stabilize form until activated by the addition of water. Multiple levels of protection against early exposure to water such as a foil pouch and an impermeable outer container allow for the safe transportation and storage in small, ready for deployment amounts of the chemicals. Water permeated the chemical pack housing and dissolves the paper walls of the chemical pouch housing and then the water facilitates the reaction between the acid and the sodium chlorite to form chlorine dioxide gas as will be described further hereunder. Absorbent and permeable materials packaged around the chemicals provide for the safe containment of the chlorine dioxide solution, and the expeditious aeration and release of the chlorine dioxide gas, once the chemical reaction has been completed.

The aqueous chlorine dioxide solution comprises chlorine dioxide, a potassium salt of a weak acid having a pKa of 2.5 or more, and a chlorite, and has a pH of 4.0 or more and 7.5 or less. The method for producing the aqueous chlorine dioxide solution comprises providing a first aqueous solution containing chlorine dioxide, mixing the first aqueous solution and a second aqueous solution containing a potassium salt of a weak acid having a pKa of 2.5 or more to prepare an intermediate aqueous solution having a pH of 4.0 or more and 7.5 or less, and mixing the intermediate aqueous solution and a third aqueous solution containing a chlorite, or mixing the intermediate aqueous solution and the third aqueous solution and then further adding the second aqueous solution thereto, to prepare an aqueous chlorine dioxide solution having a pH of 4.0 or more and 7.5 or less.

A disinfectant device including a pouch, the pouch including a first layer of material coupled to a second layer of material and defining a compartment therebetween. At least one dry reactant is retained within the compartment, the at least one dry reactant producing chlorine dioxide gas when exposed to water. A wick is at least partially disposed within the compartment. At least one from the group consisting of the first layer of material and the second layer of material define an array of ports along a periphery of the pouch and an array of fluid conduits, the array of fluid conduits being proximal to the array of ports, offset from the array of ports, in fluid communication with the wick, the compartment, and the array of ports.

A composition and method for chlorine dioxide production through reaction-diffusion chemistry that facilitates the in situ generation of chlorine dioxide, wherein a dry solid composition of hydroxymethanesulfinic acid monosodium salt dihydrate (abbreviated HMS) and a chlorine dioxide precursor are activated via the addition or absorption of water to produce chlorine dioxide. The dry solid chemical composition comprises dry, safe, transportable reagents that integrate with polymeric materials such as packaging and superabsorbent and stimuli-responsive hydrogel polymers to combine with water to produce chlorine dioxide.

A Venturi pump chlorine dioxide generation device with one or more special ninety-degree bends with half-spherical mixing stations including: at least one ninety-degree bend with two half-spherical mixing stations between the sodium hypochlorite introduction point and the acid source introduction point, at least two ninety-degree bends with two half-spherical mixing stations between the acid source point and the sodium chlorite introduction point, and at least two ninety-degree bends with two half-spherical mixing stations between the sodium chlorite introduction point and the vacuum chamber of the Venturi pump. Each ninety-degree bend with two half-spherical mixing stations is an elbow section of cylindrical conduit or pipe wherein the two outer segments of the ninety-degree bend each have a spherical shaped expansion area to create a half-spherical concave section inside the conduit or pipe.

Methods of manufacturing a light-activated powder are provided which provide solid-state generation and release of chlorine dioxide without detectable amounts of any toxic by-products such as chlorine gas, chlorites, or chlorates. The powder need not be exposed to moisture, relative humidity, or an acid before or during exposure of the powder to visible light to generate the gas. The powder can also be prepared under conditions that minimize or prevent decomposition or oxidation of sodium chlorite or premature light activation of the powder during the manufacturing process to maximize its activity.

The invention relates to an apparatus for treating foodstuff containers by spraying with a biocide-containing treatment liquid in at least one treatment zone (Z1-Z4) equipped with spraying means (B) for spraying the containers, the apparatus further comprising transport means for transporting the containers through the treatment zones (Z1-Z4), at least one generator (G1) for producing a biocide solution, at least one heating device for heating the treatment liquid, lines for supplying the biocide solution from the generator (G1) to the treatment zones (Z1-Z4) and, optionally, to at least one further biocide consumer device (BV1, BV2), lines for supplying the treatment liquid to the treatment means (B), as well as valves (V1-V7), controllable metering devices and pumps required for controlling the liquid flows, characterized in that a) the apparatus comprises at least two generators (G1, G2) for producing the biocide solution, and b) the generators (G1, G2) are connected or connectable neither directly nor indirectly to one another, but via corresponding feed lines to all treatment zones (Z1-Z4) and to any further biocide consumer device (BV1, BV2); and a method for operating such an apparatus.

An article for generating chlorine dioxide includes a canister containing a chlorine-dioxide generating composition. The articles in accordance with the invention are able to generate chlorine-dioxide gas, chlorine-dioxide solution, and chlorine-dioxide solution with surfactants. The canister includes at least one porous region that places an exterior of the canister in fluidic communication with an interior of the canister. The porous region, which in some embodiments, is realized as a mesh, is characterized by a size in a range of about 20 mesh to about 325 mesh.

A packed bed catalyst in a pressurized vessel/reactor during contact with a dioxide species precursor enhances catalytic conversion of the precursor to the dioxide species, compared with the same catalytic conversion performed in a non-pressurized vessel/reactor.