Biomass makes up approximately 16% of the landfills (this number can vary significantly depending upon the geographical location and time of the year). A majority of the biomass disposed in landfills is comprised of yard waste including grass and leaf clippings. This is becoming a problem as most landfills are running out of space and it is expensive to build new landfills. Twenty-four states have prohibited the disposal of yard waste in landfills with more states likely to follow suit. To conserve landfill space it is important to identify processes and methods for effective utilization and disposal of yard waste. It has been shown in this research that conformal coating of a biomass suspension can be utilized as an alternative daily cover (ADC) for the landfills. The biomass is ground into fine particles (d ≤ 2 mm) and suspended in a surfactant solution. This approach can reduce the cost of daily operations for the landfill and provide a solution to the problem of yard waste disposal.
Sharma, R.; Arnoult, K.; Hart, K.; Phillips, G.; Knight, S.; and Grappe, M.
"Biomass (yard waste) Suspensions as Alternative Daily Cover Material for Landfills,"
Journal of the Arkansas Academy of Science: Vol. 70
, Article 36.
Available at: http://scholarworks.uark.edu/jaas/vol70/iss1/36