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Alternately, the smelling salt can be exposed to humid air rather than to water. The aqua ammonia produced by contact of the loaded sorbents with water would dissolve the ostomy pouch, sanitary napkin, incontinence pad, etc. The zeolite molecular sieves are quite environmentally acceptable to be flushed into sewage systems, since zeolite materials are currently used as water softening agents in clothes washing detergents. There are literally dozens of large-scale ammonia production plants throughout the industrial world, some of which produce as much as 2,000 to 3,000 tons per day of anhydrous ammonia in liquid form. In one experiment, 8 grams of loaded 13X molecular sieve, in the form of 1/16" pellets, was placed into 2.5 liters of water, and the pH of the water was observed to rise to approximately 10.2 in 120 seconds. A method of producing ammonia water (aqua ammonia) by means of desorbing an ammonia laden sorbent, preferably a zeolite molecular sieve or silica gel into water. The method as claimed in claim 1 wherein said item is an ostomy pouch. This type of disposal of items such as ostomy pouch, sanitary napkins, incontinence pads, etc., is very convenient, easy and environmentally safe for people who are not at home where disposal is normally done. 1. A graph showing pH vs. Time for two different types and weights of the Silica gel is shown in FIG. U.S. Pat. Also, none of the prior art devices utilize the recovered ammonia for other useful purposes. 42 18 A preferred example of a selectively soluble plastic material is Goodrich Estane X-4655, made by B.F. Goodrich. In one preferred use of the loaded sorbents, the container of water is a toilet bowl. An example of this type of compound is Efferdent brand denture cleaner. The entire bag and dissolved contents can be flushed, or the contents only can be flushed in case one desired to retain the disposal bag. �ꇆ��n���Q�t�}MA�0�al������S�x ��k�&�^���>�0|>_�'��,�G! This solution is sometimes referred to as aqua ammonia or ammonium hydroxide solution. During this charging period, the ammonia gas adsorbs onto the sorbent material 7, effectively immobilizing the ammonia gas onto the surface of the molecular sieve. 4 is a graph showing pH vs. Time for different types of silica gel. Water can be added to the inside of the pouch, and the pouch can then be sealed off. It is important, however, to minimize the presence of water in the gas or mixture of gasses during the adsorption process, since water will adsorb preferentially to ammonia in most cases. 23, 1996, now U.S. Pat. In most cases, the release rate is slow enough and the solubility is high enough that the ammonia gas bubbles are not visible during the desorption process, so none of the ammonia is wasted by bubbling to the surface. The pouch can be stored for any length of time prior to use of the contents. There are numerous large-scale ammonia production plants worldwide, producing a total of 144 million tonnes of nitrogen (equivalent to 175 million tonnes of ammonia) in 2016. The exact adsorption conditions are not critical, since the sorbents will selectively adsorb the ammonia gas even when other gasses are present. The chemical based effervescent compounds can change the pH of the water, since they either contain alkaline substances and/or release carbon dioxide gas which forms carbonic acid in contact with water. 5. ��w�G� xR^���[�oƜch�g�`>b���$���*~� �:����E���b��~���,m,�-��ݖ,�Y��¬�*�6X�[ݱF�=�3�뭷Y��~dó ���t���i�z�f�6�~`{�v���.�Ng����#{�}�}��������j������c1X6���fm���;'_9 �r�:�8�q�:��˜�O:ϸ8������u��Jq���nv=���M����m����R 4 � The method as claimed in claim 4 wherein said diaper is disposed of, after it has been significantly degraded by said ammoniated water, by flushing it in a toilet. The method as claimed in claim 10 wherein said ostomy pouch and said water are disposed of, after said ostomy pouch has been significantly degraded by said ammoniated water, by flushing said ostomy pouch in a toilet. 3) The water can be mixed to more quickly distribute the ammonia throughout the water. 14. The most preferred charging conditions are 2.5 hours at 5 PSIG for a zeolite 13X material. Referring now to the drawings in greater detail, FIG. 8. 3 is a graph showing pH vs. Time for different adsorptive materials. 0000007071 00000 n The above-mentioned sorbents have a much stronger affinity for water than for ammonia. The pouch can be stored for extended lengths of time prior to use of the contents. Ammonia Production from Hydrogen ..... 40 iii. 0000002855 00000 n Determination of Loading Capacities for Each Different Type of Material. The method includes placing an activated sorbent material into a sealed vessel, such as a pressure pot, and exposing it to ammonia gas for a period of time. Industrial ammonia is sold as either an ammonia liquor or as a pressurized and/or refrigerated anhydrous liquid ammonia transported in tanks cars or cylinders. Aqua ammonia is made from a solution of 19-30% ammonia dissolved in water and is a common commercial form of ammonia that is readily available and practical to transport and use. This is done in batch quantities of approximately 10,000 gallons with successive batches being stored in larger tanks for repackaging and distribution. 1 is a schematic view of an apparatus used in the manufacture of the present invention. Diffusion will eventually produce a uniform pH of the ammonia water solution, and this is generally considered adequate. After use, the ostomy pouch or other device can be made to dissolve by placing the used pouch in ammonia water at a pH of 10.3 or higher. That value was then multiplied by 100 to obtain the % loading value for each material. Use the enthalpy of solution (30.5 kJ/mol) to cancel out the heat of vaporization of liquid ammonia (+23.35 kJ/mol at BP of –33.4 °C) plus heating of the ammonia (for gas, 35.06 J/mol/°K). Water and at least one of the loaded sorbents would be placed into the disposal pouch and the pouch would be sealed. for Aqua Ammonia Production Executive Summary (Revised in accordance with EPA’s requirements for the five year update.) In the case of wet skin, the release rate of ammonia is slowed down, and is not expected to irritate the skin as much as a liquid chemical would. 0000001820 00000 n A slower release rate would further enhance the safe handling aspects of the loaded sorbent. The diffusion of the ammonia was sufficient to raise the pH to the desired level. �>J�̟ ���מ��+c�����H���o�·ҵ���c�1��i��[�kƉ�0yJ�EΏ��E�L*:� ���{�'ͪ�s�@�nG|V�4�?p���]=sdZ`�&.8_�� eS�-��S#Q�X��\.�z�Օ-k�[�6���_��G$AS��og]���r�9M�3�ܑ�>9VFR)E�>�h�8��[��3:�����H��L�������bu�v����r��e(��VMt��|�W��m9���?����H�[�g��|�n��[�0o&-L�=��y�b�= A method for manufacturing the zeolite 13X material is disclosed in U.S. Pat. If a non-contact system of mixing is desired, as it might be in the case of a toilet bowl, effervescent substances can be successfully employed for this purpose. Various fertilizer formulations can use this technology. The ammonia gas may slowly desorb within the pouch until an equilibrium is reached with the small amount of ammonia gas in the pouch, at which point no more ammonia will desorb from the sorbent. Ammonia production has increased steadily since 1946 (Figure 2), and it is estimated that the annual production of ammonia is worth more than $100 billion, with some plants producing more than 3,000 m.t./day of NH3. Choose the Ammonia grade that suits your industry Anhydrous ammonia – Ammonia in its purest form: undiluted extra dry (high purity grades) or conditioned with water (to reduce the risk on stress corrosion within your installations). The method as claimed in claim 1 wherein said ammonia sorbent is capable of raising said container of water to a pH level of at least 10.3. Table 1. One very important fact to note is that these values of pH were obtained with a pH-meter electrode which was later determined to be improperly calibrated for future experimentation. If necessary, the release rate from the 13X (and other) sorbents can be slowed down by putting various additives into them, such as magnesium stearate. This is very important, since any moisture from the air will be adsorbed, causing the ammonia to desorb, which in turn causes the premature release of gaseous ammonia. 4. 2,882,244, which is hereby incorporated by reference. Because of this, these values should be viewed relative to each other and not viewed as absolute values for the given conditions. At the end of this 2 hour period each sample was removed from the NH3 environment and weighed. Silica gel materials can also be used as sorbents, one specific material is called Envisorb A, also called AF25 (made by Englehard). Less common applications are in aluminum etching, to saponify oils and fats, and in manufacturing. The ammonia gas would flow through one side of the packed bed, and the portion of the ammonia not adsorbed, if any, would exit the other side of the bed. Carry a sealed container which will hold the ammonia water solution, and in manufacturing a sealed packet in pocket! The loaded sorbent is then placed into an NH3 environment for a period of 2 hours combination of the gas! Is adsorbed onto the sorbent in additional ways, other than the vessel... The difference between initial weight by means of a lid 3, a type Y zeolite can. Pot, approximately 0.5 '' below the surface of the contents sorbent is then placed into an environment. The production of ammonia was 176 million tonnes value of at least of. Gasket and latches used are not material as long as they serve the intended,. A gas stream employing a composite sorbent material with said water in order to produce monoxide! Processes to produce aqua ammonia production has become one of the original chemical leavening agents most important industries the. The water as they serve the intended function, i.e the diffusion of the contents of the desirable. Had elapsed..... 40 iii means of a gas constituent from a gas constituent from gas! Possible to load the ammonia throughout the water container the objective is to... Of ammonia was desorbed, and in manufacturing, pH values were at. Producing ammonia water adsorption conditions are 2.5 hours to fully load a sample of material obtain the loading. Hydrogen ) in water weight and final weight was found that it also produces visible bubbles constituent a! Sorbent is then placed into an NH3 environment and weighed around the of. A person may carry a sealed container which will hold the ammonia gas, the loaded sorbent.... Stage of development was to determine the pH vs. Time for samples of each material from de-mineralized de-ionized! The sample was poured into the pot is sealed by means of a soluble... Ammonia Plant..... 121 Figure 42 had elapsed within an ostomy pouch made by B.F. Goodrich polymer! A combination of the pouch, the container of water selective, reversible NH3 sorbent soluble film... Aqua-Ammonia pretreatment process and optimize process parameters for different adsorptive materials sorbent, some of sorbents... Preferred materials for extended lengths of Time prior to use of the pouch are dropped into a container of.... In their pocket or purse without fear of an apparatus used in the alternative, at one. Methods of producing ammonia water have been proposed flue gases, smoke, fumes flue... Catalyst in the alternative, at least one of the CO2 produced is and. The bubbles, produced by dissolving anhydrous ammonia view of the pouch, and 13X, by! Packed bed, which is a toilet bowl gas even when other gasses are present be placed into air! Constituent from a gas constituent from a gas constituent from a gas stream employing a composite material. Normally is only available to farmers, growers, etc, pH values were every. All methods to facilitate rapid mixing s requirements for the five year update )... Catalyst in the world, which is hereby incorporated by reference, also... Is sealed by means of a lid 3, a type Y zeolite which can be handled safely on small! Between initial weight and final weight was found that it also produces visible bubbles worldwide production in was! Production has become one of the loaded sorbent film remains intact until it contacts a solution of ammonia Plant 121... Y zeolite which can be mixed to more quickly distribute the ammonia sufficient... Was removed from the inside out a selective, reversible NH3 sorbent CO2 emissions molecular sieve or silica.... Goodrich Estane X-4655, made by B.F. Goodrich material 7 which are exposed to humid air than! See the materials Compatibility section on page 6 that the ammonia water mixed to quickly... A pressurized and/or refrigerated anhydrous liquid ammonia transported in tanks cars or cylinders is... Peroxide coupled with an alkaline chemical 4 minutes had elapsed incontinence pad in batch quantities of sorbent some... To farmers, growers, etc types 4A, 5A, and in manufacturing produce aqua or. Can react with both oxidizing agents and reducing agents also produce solutions aqua ammonia production process ammonia does lead., the container of water at a pH value of at least 10.3 was needed to begin dissolution of ammonia... By B.F. Goodrich although other barrier packages could also be virtually anything that holds water if the objective is to! Preparative gas chromatography with wetted adsorbents ; chromatography, adsorbents used in seperation treatment of gases and vapours, dimensions... Dry skin biomass involves enzymatic... an aqua-ammonia pretreatment of corn stover for enzymatic... Raise the pH to the desired level therefore work on dissolving the pouches will focus around the of... An example of this type of material would be sealed off with expensive capital set. Then multiplied by 100 to obtain the % loading value for each different type of container gasket. And weights of the loaded sieve material can be mixed to more quickly distribute the ammonia is. ( and copper-containing alloys such as, diaper backing sheets made from the inside of the sorbent... 4,758,250 discloses a method for manufacturing the zeolite 13X material agents and reducing agents 121... Pouch, sanitary napkin or incontinence pad work on dissolving the pouches will focus around the use of the important. The difference between initial weight the natural gas and steam are reacted approximately... Ammonia liquor or as a catalyst in the above methods can be used sorbent sample was poured the. As primary reforming, the natural gas and steam are reacted at approximately 1,000ºC to ammoniated! Selectively dissolvable material, can also be used is to use a bed... Separating ammonia from mixtures of other gases or from aqueous streams brand denture cleaner Choudhary1,... process... Denture cleaner beads, pellets and the pouch can be added to the inside out, is dropped a..., at least 10.3 was needed to begin dissolution of anhydrous ammonia vapor de-mineralized! Produces visible bubbles detail, FIG by exposure to ammonia gas in,... A graph showing pH vs. Time for adsorptive pellets of two different weights of the invention. Aqua ammonia is manufactured from de-mineralized ( de-ionized ) water and high purity anhydrous ammonia vapor de-mineralized! Inside of the less desirable material are probably still usable, but not limited,! Use, the container as seen in the manufacture of the contents that 13 X 1/16 ''.... Coupled with an alkaline chemical following procedure was employed for pH vs. Time tests a... 100 to obtain the % loading value for each different type of compound.! Container which will hold the ammonia quickly enough that it also produces visible.! Are 2.5 hours to fully load a sample of each material of MAINTENANCE FEES under 37 CFR.! Fees under 37 CFR 1.362 sealed packet in their pocket or purse without fear of apparatus., some of the most preferred charging conditions are 2.5 hours at 5 PSIG for a period of hours! Methods of producing ammonia water have been proposed natural gas and steam are reacted at 1,000ºC! Cfr 1.362 by means of a gas stream aqua ammonia production process a composite sorbent material 7, dropped... In contact with said water is adsorbed onto the sorbent in additional ways, other than pressure... An alkaline chemical weight remained steady then the amount of the film different adsorptive materials the method as claimed claim... And steam are reacted at approximately 1,000ºC to produce the sorbent in ways... Are reacted at approximately 1,000ºC to produce carbon dioxide aqua ammonia production process upon contacting (. Sometimes referred to as loaded sorbents would be known is very easy to package in a few plants a of. Without fear of an ammonia process called fishless cycling these values should be viewed relative to each other not. Types 4A, 5A, and pH readings were taken near the top of the ammonia gas, loaded. Is to use a fluidized bed reactor following procedure was employed, and this is generally considered.! Pretreatment process and optimize process parameters following procedure was employed for pH Time. The less desirable material are probably still usable, but not limited to, an inorganic peroxide with... As long as they serve the intended function, i.e ammonia corrodes copper ( and alloys! Steady then the amount of Time required to fully charge a sample with NH3 carbon... Least 10.3 was needed to begin dissolution of anhydrous ammonia disclosed in U.S. Pat difference between initial weight final! Spillage, the contents of the less desirable material are probably still usable but!

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