36x48 Horizontal Poster - RRC blogs

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36x48 Horizontal Poster - RRC blogs
Dust Stop Municipal Blend
An environmentally friendly alternative to toxic road salts
Teaghan Wellman and John Palson
Red River College and Cypher Environmental
Abstract
Dust Stop Municipal Blend (DSMB) is specifically
designed as a non-corrosive and environmentally friendly
alternative to road salts, such as magnesium chloride and
calcium chloride, offering superior road dust control results.
Dust Stop Municipal blend contains three main constituents;
sugars, starches and minerals. Dust Stop Municipal Blend
unique formula is able to provide unparalleled dust control
while being both cost effective and noncorrosive. The
concentrated liquid formulation is easily mixed with several
parts water prior to its application, allowing it to be easily
transported and applied.
Background
The science of dust control agents is both simple and
complex. A dust control agent simply serves to wet or weigh
down small particulates that would otherwise be dispersed
as airborne dust. This is a particularly pressing concern
when such airborne dusts represent toxic inhalation hazards
or may present combustion hazards. In other environments,
dusts can more simply represent a nuisance by obscuring
visibility, fouling equipment and so forth. Dust control is
especially a concern in large scale industrial operations such
as mining and construction.
The unique blend of materials utilizes the functional
properties of sugars and starches allowing DSMB to bind
and harden any loose particulate matter, decreasing dust on
surfaces. DSMB is applied in a diluted form; water
evaporates from the product as it dries. Dust control is
achieved during this process as the high-viscosity, naturally
adhesive material traps loose particulate.
DSMB is a unique formulated combination of crusting
agent, dust suppression agent, binding material and a
carrier. The design of experiment model looked at
economically maximizing information and methodically
varying process variables and observing the effects of the
changes. The following test methods were used (and
described in detail on the report provided to the client):solubility run-off- penetration- dust monitoring- freeze thaw
application. The product was tested and is applied in the
following way:
1. Water is added to the product allowing for suspension of
active inputs such as sugars, starches and minerals.
2. As water evaporates, molecules bind together to form a
cohesive matrix.
3. The newly formed matrix will now function to attract and
bind loose soil, dust or other particulates that may
otherwise become air born and create dust.
4. Over time; as more water evaporates, the solution
becomes firm and durable preventing encapsulated dust
generating material from becoming air born.
Results
Introduction
There are millions of kilometers of unpaved roads
around the world, dust produced by vehicles on such
unpaved roads is a major contributor to air pollution. In most
of the unpaved road networks there are unacceptable levels
of dust particles, which causes poor driving conditions,
health and environmental issues. This dictates the need for
a good dust control program that is effective and
economical.
Our research showed that the product’s unique blend of
materials function to reduce road surface issues in the rain
or in wet conditions. The incorporated sugars compete for
water making it less available to bind with other soil
molecules, while providing some structural support and
added road stability. The insoluble mineral component
forms a bond with the sugar molecules creating some
means of insolubility and will have less of a chance to run
off in wet conditions. Once wet, the product will re-set once
road surfaces dry, re-binding any loose materials. For these
reasons, DSMB is not adversely affected by heavy rain, yet
very effective and long lasting in dry weather.
After multiple small scale lab tests such on material
properties such as penetration, water resistance and
durability, the best formulation was identified and was
deemed ready for large scale field/road testing. Two
suitable locations were identified and a total of 3 kilometers
was tested and compared to chloride treated roads using
devices such as DustMate and DCP.
Conclusions
Based on the small and large scale research and data
gathered on the effectiveness of several raw inputs a
product was developed that would allow for the greatest and
longest lasting dust control. The data collected from these
trials indicated that the areas treated with the sugar based
products produced less dust over a longer period of time
than the chloride treatments.
The result of our research was a product with the
following benefits:
• Non-corrosive and 100% environmentally friendly; will
not cause corrosion to equipment or vehicles.
• Longer lasting results than typical road salts
• Cost competitive with road salts
• Easily mixed, applied and maintained
• Rejuvenates with moisture
• Applicable to a range of road and material types
• Improved engineering properties of roads treated
• Safe to use in sensitive environmental areas
• Not harmful to roadside vegetation
Acknowledgements
Method
DustMate
Location
Markham Road
Date
2016-09-16
Direction
Eastbound
Measurement
mg/m^3
Type
Average Total Particles
Chlorides
DSMB
1.11
0.41
Reduction
171%
Chlorides
DSMB
0.28
0.19
Reduction
47%
We wish to thank the Natural Sciences and Engineering
Research Council of Canada (NSERC) for the financial
support to make this important project a reality. We also
wish to thank Red River College, Cypher Environmental
and the staff that steered this project, were extremely
helpful in identifying key issues and concerns related to
dust control. Finally we would like to thank Applied
Research and Development department students and
staff who were very generous with their time in attending
meetings, reviewing documents and their continuous
support right throughout the project. Said Hassan,
Michael Judge, Natalia Manko, Naga Ruddarraju, Ishan
Patel, Varneek Mann, Omed Osmani and Philip Cheng.
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