Dustiness of chopped straw as affected by lignosulfonate as a dust suppressant

Many sources add to the concentration of bioaerosols in livestock buildings, and source control is the number one priority for keeping a low concentration. Straw is a common but dusty bedding material in livestock buildings and the present study is focused on the dustiness of chopped straw (barley)...

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Bibliographic Details
Published in:Annals of Agricultural and Environmental Medicine 1999, Vol.6 (2), p.133
Main Authors: Breum, N O, Nielsen, B H, Lyngbye, M, Midtgård, U
Format: Article
Language:English
Subjects:
Aerosols
Air Microbiology
Air Pollution, Indoor - analysis
Air Pollution, Indoor - prevention & control
Airborne microorganisms
Animals
Bedding
Colony Count, Microbial
Dust
Dust - analysis
Dust - prevention & control
Endotoxins
Endotoxins - analysis
Fungi - growth & development
Hordeum
Housing, Animal
Lignin
Lignin - analogs & derivatives
Lignin - chemistry
Limulus Test
Livestock
Pilot Projects
Plastics
Storage conditions
Straw
Sulfonation
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Summary:Many sources add to the concentration of bioaerosols in livestock buildings, and source control is the number one priority for keeping a low concentration. Straw is a common but dusty bedding material in livestock buildings and the present study is focused on the dustiness of chopped straw (barley) as affected by lignosulfonate (LS) as a dust suppressant. A LS-solution was aerosolized in a spray chamber fitted to an existing bedding chopper to allow the chopped straw to adsorb the LS-solution. The dustiness of straw treated with LS was compared to non-treated straw. As storage conditions may affect dustiness, the study included treated straw kept for 4 weeks in sealed plastic bags. Dustiness of the chopped straw was measured in terms of the potential of the straw to emit bioaerosols in a rotating drum. The LS-treated straw proved low in dustiness compared to the non-treated straw. The dustiness with respect to the mass of dust was reduced by at least a factor of 6, and for fungi and endotoxin the factors of reduction were 4 and 3, respectively. Dustiness of LS-treated straw kept in plastic bags was reduced by a factor of 2 for mass of dust and by a factor of 4 for endotoxin, but dustiness for fungi was increased by a factor of 3. It is concluded that lignosulfonate has potential as a dust suppressant for chopped straw.
ISSN:1232-1966
1898-2263