lignosulfonate work as dust suppresant

lignosulfonate work as dust control agent

Lignosulfonate could be used as  binder as its original form of lignin to bind the cellulose and fiber,so it can be used binding agent in pellets or compressed materials,also could used as dust control agent,which will be much more environment friendly and lower cost compared with Chloride.

How lignosulfonate control the dust

Lignosulfonate binds the road dust surface particle,when evaporate it will become the high-viscosity, naturally sticky material traps dust particles,then after sun heat will make a water resistant durable dust control surface.

Features & Benefits

Environment friendly produce ,non-chemical like chloride.

Reduce dust to PM10 Standards

Can be used on many soil types

Can be used in any places (near water, trees, orchards),will not cause pollution.

Usage

Application rates for a topical application are 0.3-0.5 gallons per square yard.

Recommendations

Pre-wet the road before spray the water.

In order to find the best dust control agent, the Department of Defense set up a test at Fort Sill and Fort Hood in the late 1990s.  They looked at four agents from the three groups and how they worked on dirt roads:  polyvinyl acrylic polymer, soybean feedstock byproduct, calcium lignosulfonate, and a 38% calcium-chloride solution.  They discovered that all four agents were equally effective during the first month by reducing dust by 50%.  Generally the dust control agents continued to provide protect past 60 days.  However, polyvinyl acrylic polymers tended to break down between the first and second month as heavy traffic tended to break down its surface sealing characteristics.

Another dirt road dust control study was done by California and focused on eliminating the fine dust that remains suspended in the air and is inhaled.   They discovered that polyvinyl acrylic polymers reduced these fine dust particles by 90%.  Lignosulfonates reduced dust by 20% and calcium chloride 10%.

When it comes down to it, there is no perfect dust control agent for haul roads.  Mine managers have to consider several factors, including soil composition, local environmental regulations, and traffic.

Here’s an example.  Lignosulfonates don’t last as long as chloride products, so they can cost more. However, they are more environmentally friendly and don’t corrode heavy equipment. But if lignosulfonates get on heavy equipment, it’s like trying to get pine tar off. Usually warm, soapy water does the trick, but that increases water usage and pollution problems. There are also some minor downsides to the smell and color of lignosulfonate. When you first put it down, it smells like pine tar, but that dissipates quickly.

Enviromental Effects of Applying Lignosulphonate to Roads

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