Abstract: An animal emission monitoring device for positioning on cattle, the animal emission monitoring device comprising a snout member comprising a sensor unit for detecting the quantity of methane emissions and a positioning means for positioning the device on the head of an animal such that the snout member locates the sensor unit over the nostril of the animal.

Abstract: A methane conversion device is provided that includes a reaction chamber comprising a converter that is configured to oxidize methane. A sensor is provided that is adapted to detect the presence of methane within gas exterior to the methane conversion device. A positioner is provided for positioning the device on an animal.

Abstract: An animal emission monitoring device for positioning on cattle, the animal emission monitoring device comprising a snout member comprising a sensor unit for detecting the quantity of methane emissions and a positioning means for positioning the device on the head of an animal such that the snout member locates the sensor unit over the nostril of the animal.

Abstract: A methane oxidation device for recovering heat for re-use in oxidation, the methane oxidation device comprising; a methane oxidation unit for oxidising methane; and a heat exchanger for recovering heat for re-use in oxidation; wherein the heat exchanger comprises; an inlet arranged, in use, in fluid communication with a source of methane emissions; an outlet; at least one flow path, the at least one flow path fluidly connecting the inlet to the outlet, the at least one flow path having at least a portion passing though the methane oxidation unit; and at least one counter flow path, wherein the counter flow path is the counter of the flow path, the at least one counter flow path having at least a portion passing though the methane oxidation unit; in use, the at least one flow path and counter flow path are arranged to permit heat transfer therebetween.

Abstract: A methane conversion device comprises a reaction chamber; a sensor for detecting the presence of methane; blowing means for directing external gasses Into the reaction chamber when the sensor detects the presence of methane above a predetermined threshold; conversion means that are configured to oxidise methane; and positioning means for positioning the device on an animal.