Accession Number : ADA307692

Title :   The Conversion of Waste Scrubbing Liquor into Fertilizer,

Corporate Author : AEROSPACE CORP EL SEGUNDO CA

Personal Author(s) : Westberg, Karl

PDF Url : ADA307692

Report Date : 01 FEB 1995

Pagination or Media Count : 26

Abstract : Used, unwanted scrubbing liquor consisting of an equimolar mixture of nitrate and nitrite dissolved in a highly alkaline solution (pH > 13) is now disposed of as a hazardous waste. However, this waste liquor can be converted into nitrate fertilizer by oxidizing the nitrite to nitrate with ozone and neutralizing the alkali with nitric acid to form a nitrate solution at pH 7. This report describes the chemical reactions, procedures, and equipment necessary for converting unwanted, partially depleted scrubbing liquor into nitrate fertilizer. It is concluded that the Hydrazine Waste Water Treatment System at Vandenberg Air Force Base can be used, with only slight modification, to both oxidize and neutralize waste liquor and thereby convert it to fertilizer.

Descriptors :   *CONVERSION, *FERTILIZERS, SOLUTIONS(MIXTURES), NEUTRALIZATION, OXIDATION, CHEMICAL REACTIONS, AIR FORCE FACILITIES, HAZARDOUS WASTES, NITRIC ACID, OZONE, ALKALINITY, NITRATES, NITRITES.

Subject Categories : Inorganic Chemistry
      Agricultural Chemistry
      Solid Wastes Pollution and Control

Distribution Statement : APPROVED FOR PUBLIC RELEASE