TECHNOLOGY FOCUS - AGRICULTURE - Preferred Method: The method further involves: converting ammonia in the digestate to ammonium ion by decreasing a pH of the digestate to produce a pH-adjusted digestate, where the pH of the pH-adjusted digestate is less than 7 (preferably less than 6). The method further involves: prior to converting the ammonia to ammonium, transferring the digestate from the anaerobic digester to a holding tank without exposing the digestate to the atmosphere. The method further involves: evaporating liquid from the digestate to produce a concentrated digestate having a percentage of solids greater than a percentage of solids of the digestate. The method further involves: removing biogas from the anaerobic digester; and optionally removing impurities from the biogas. The method further involves: converting biogas from the anaerobic digester into at least one heat, electrical power, and pipeline quality gas. The method further involves: scrubbing the biogas to remove sulfur containing impurities from the biogas. The scrubbing converts at least one sulfur containing compound in the biogas to sulfuric acid. The method further involves: adding at least a portion of the sulfuric acid to the digestate for converting ammonia in the digestate to ammonium ion. The method further involves: transferring the digestate from the anaerobic digester to a holding tank without exposing the digestate to the atmosphere; converting ammonia in the digestate to ammonium ion by decreasing a pH of the digestate to produce a pH-adjusted digestate; and evaporating liquid from the pH-adjusted digestate to produce a concentrated digestate having a percentage of solids greater than a percentage of solids of the digestate. The method further involves: condensing moisture removed from the pH-adjusted digestate during the evaporating step to produce a liquid waste; and optionally delivering at least a portion the liquid waste to at least one of the anaerobic digester, a vessel containing the pH-adjusted digestate, and a waste water treatment facility. The method further involves: prior to spray drying the digestate, screening the digestate to remove solid particles larger than a preselected threshold size, where the preselected threshold size is 100-300 microns. The method further involves: collecting the dry fertilizer product. The dry fertilizer product is collected using at least one bag filter and cyclonic dust collector. The method further involves: condensing vapor from the spray drying step to produce a condensate containing moisture removed from the concentrated digestate; and optionally, returning at least a portion of the condensate to the anaerobic digester. The method further involves: adding at least one additive to the concentrated digestate. Preferred Composition: The fertilizer composition is further prepared by: converting ammonia in the digestate to ammonium ion by decreasing a pH of the digestate to produce a pH-adjusted digestate; and prior to spray drying, evaporating liquid from the pH-adjusted digestate to produce a concentrated digestate having a percentage of solids greater than a percentage of solids of the pH-adjusted digestate.    TECHNOLOGY FOCUS - INSTRUMENTATION AND TESTING - Preferred System: The system further comprises: a digestate holding tank in fluid communication with the microbic digester for receiving the digestate from the microbic digester and in fluid communication with a source of acid for decreasing a pH of the digestate. The system further comprises: a solids concentration module configured to receive pH-adjusted digestate from the digestate holding tank for removing at least a portion of the liquids component from the pH-adjusted digestate. The system further comprises: solids concentration module including an evaporator and a condenser for recovering liquid waste containing moisture removed from the pH-adjusted digestate. The system further comprises: a filtration module disposed between the digestate holding tank and the solids concentration module, where the filtration module containing at leas one filter element for removing a portion of the solids component. The system further comprises: a solids concentration module coupled to the microbic digester for removing at least a portion of the liquids component from the digestate. The system further comprises solids collector for collecting the dry fertilizer product. The microbic digester is an anaerobic digester, the system further comprises: a biogas plant coupled to the microbic digester and configured to convert biogas from the microbic digester into one or both of heat and electrical power. The system further comprises: a purification module coupled to the microbic digester for removing impurities from the biogas. The system further comprises: an acidulation tank in fluid communication with the purification module and configured to receive the sulfuric acid from the purification module. The system further comprises: a vapor collection system including a condenser coupled to the spray dryer module for recovering a condensate containing moisture removed from the concentrated digestate. Preferred Components: The microbic digester is selected from aerobic digester and anaerobic digester. The digestate holding tank is configured to receive the digestate from the microbic digester without exposing the digestate to the atmosphere. The filtration module is configured to remove solid particles in the solids component above a preselected threshold size. The preselected threshold size is 100-300 microns. The biogas plant is a combined heat and power (CHP) system. The purification module includes a scrubber element for removing sulfur containing impurities from the biogas. The purification module includes a scrubber element for converting at least one sulfur containing compound in the biogas to sulfuric acid. The spray dryer module includes at least one high pressure fluid atomization nozzle, two-fluid atomization nozzle, rotary disk atomizer, and fluidization bed. The spray dryer module includes a spray dryer selected from co-current spray dryer, counter current spray dryer and/or mixed flow spray dryer.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The digestate is selected from anaerobically digested organic waste and/or aerobically digested organic waste. The digestate is obtained by anaerobically digesting the organic waste in an anaerobic digester to produce the digestate and a biogas. The organic waste is selected from source separated organic waste, food waste, organic byproducts of manufacturing processes, glycerol, glycerin, fats, oils, lipids, grease, yard waste, manure, biosolids and/or digestible organic materials. The percentage of solids in the pH-adjusted digestate is 5 wt.% and the percentage of solids in the concentrated digestate is 10-20 wt.%. The organic waste is selected from source separated organic waste, food waste, organic byproducts of manufacturing processes, glycerol, glycerin, fats, oils, lipids, grease, yard waste, manure, biosolids and/or digestible organic materials. The dry fertilizer product has a nitrogen content of greater than or equal to 10 wt.%. The dry fertilizer product has moisture content of 3-4 wt.%. At least one additive is selected from organic and inorganic forms of nitrogen, soybean meal, soybean flour, cottonseed meal, cottonseed flour, amino acids, lysine, ammonium salts, ammonium sulfate, ammonium nitrate, urea, potassium salts, potassium sulfate, micronutrients and/or surfactants. The microbically digesting organic waste comprises: anaerobically digesting organic waste in an anaerobic digester to produce a biogas and the digestate. ACTIVITY - Fertilizer. No biological data given.    MECHANISM OF ACTION - None given.    EXAMPLE - No suitable example given.