Gaseous emissions from lignosulfonates in dust abatement applications.
Concerns over possible gaseous emissions from lignosulfonate dust suppressant agents used on dirt roads prompted an investigation into the possible release of sulfur dioxide and organic vapors. Emissions from eight commercial lignosulfonates products applied to three different soil types were measured in environmental chambers. It was determined that except under extreme soil pH conditions (<1), the release of sulfur dioxide from the application of lignosulfonates to roads is essentially non existent. The odor associated with the application was found to be due to trace amounts of organic compounds mainly of the furfural variety. Levels of odor compounds in these products was significantly lower than the previously reported values for spent sulfite liquors because the majority were removed during processing operations prior to sale.
Nelson
Julie B
JB
Paper Science and Engineering, College of Forest Resources, University of Washington, Box 352100, Seattle, WA 98195, USA.
Northey
Robert A
RA
D000393:Air Pollutants / Q000032:analysis*; D004391:Dust; D004784:Environmental Monitoring; D005740:Gases; D008031:Lignin / Q000031:analogs & derivatives* / Q000032:analysis*; D009812:Odorants / Q000032:analysis*; D009930:Organic Chemicals; D012987:Soil; D013458:Sulfur Dioxide / Q000032:analysis*; D014186:Transportation; D014835:Volatilization
D000393:Air Pollutants; D004391:Dust; D005740:Gases; D009930:Organic Chemicals; D012987:Soil; D013458:Sulfur Dioxide; C001545:lignosulfuric acid; D008031:Lignin