Carbon capture system and method for synthetic turf fields

Abstract

A synthetic turf system including a backing, turf fibers extended upward from the backing, and one or more infill layers positioned above the backing, below a top portion of the turf fibers. The one or more infill layers includes rock dust, or the synthetic turf system further includes a layer of the rock dust disposed above or below the one or more infill layers. The rock dust is accessible to rainwater from the top portion of the turf fibers, where the rainwater and the rock dust chemically react with each other, forming a carbonate or a bicarbonate.

1 . A synthetic turf system comprising:
 a backing;   turf fibers extended upward from the backing; and   one or more infill layers positioned above the backing, below a top portion of the turf fibers, wherein the one or more infill layers includes rock dust, or the synthetic turf system further comprises a layer of the rock dust disposed above or below the one or more infill layers, and   the rock dust is accessible to rainwater from the top portion of the turf fibers, where the rainwater and the rock dust chemically react with each other, forming a carbonate or a bicarbonate.   
     
     
         2 . The synthetic turf system of  claim 1 , wherein the rock dust includes wollastonite, basalt, peridotite, dunite, dolomitic lime, dolostone, andesite, diorite, gabbro, rhyolite, quick lime, or lime stone. 
     
     
         3 . The synthetic turf system of  claim 1 , wherein the rock dust includes silicate rock, igneous rock, or reactive rock. 
     
     
         4 . The synthetic turf system of  claim 3 , wherein the silicate rock, igneous rock, or reactive rock forms weathered particles having a sphericity of about 0.65 to about 0.85. 
     
     
         5 . The synthetic turf system of  claim 1 , further comprising a base stone layer disposed below the backing, and the rock dust is layered above, layered below, or mixed in the base stone layer. 
     
     
         6 . The synthetic turf system of  claim 5 , wherein the base stone layer is a first base stone layer formed from stone having a first nominal size range,
 the system further comprises a second base stone layer disposed below the first base stone layer, the second base stone layer having a second nominal size range coarser than the first nominal size range, and   the rock dust is layered above, layered below, or mixed in the second base stone layer.   
     
     
         7 . The synthetic turf system of  claim 6 , wherein the first base stone layer is at least one inch thick and formed from American Society for Testing and Materials (ASTM) #89 stone, and the second base stone layer is at least 2 inches thick and formed from ASTM #57 stone. 
     
     
         8 . The synthetic turf system of  claim 5 , wherein the backing and the base stone layer are water permeable, and the rock dust is accessible by rainwater traveling through the one or more infill layers by gravity. 
     
     
         9 . The synthetic turf system of  claim 5 , wherein the base stone layer includes silicate rock, igneous rock, or reactive rock that is accessible to rainwater traveling from the top portion of the turf fibers by gravity. 
     
     
         10 . The synthetic turf system of  claim 5 , wherein the rock dust is layered directly on a top surface of the base stone layer, the rock dust forming a layer with a thickness of at least one eighth of an inch, or
 the rock dust is layered below a geotextile component, the rock dust forming a layer with a thickness of at least half an inch, the geotextile component being disposed underneath the base stone layer,   the rock dust is tilled into a subgrade below the base stone layer, or   the rock dust is positioned in a subdrain below the base stone layer.   
     
     
         11 . The synthetic turf system of  claim 1 , further comprising a subdrain trench below the backing, wherein the rock dust is blended with stone in the subdrain trench. 
     
     
         12 . The synthetic turf system of  claim 1 , wherein at least ninety percent of the rock dust has a particle size less than 62 micrometers in diameter. 
     
     
         13 . The synthetic turf system of  claim 1 , wherein the one or more infill layers include the rock dust, the one or more infill layers are disposed on top of the backing, between the turf fibers, and the top portion of the turf fibers extends above the one or more infill layers. 
     
     
         14 . Infill for a synthetic turf system, the infill comprising:
 rock dust including silicate rock, igneous rock, or reactive rock that forms a carbonate or bicarbonate with rainwater, wherein at least 90 percent of the rock dust has a particle size less than 250 micrometers in diameter; and   organic particles, rubber particles, elastomer particles, coated particles, or thermoplastic particles blended or layered with the rock dust in one or more infill layers.   
     
     
         15 . The infill of  claim 14 , wherein the rock dust forms less than 10 percent of the infill by weight and includes wollastonite, basalt, peridotite, dunite, dolomitic lime, dolostone, andesite, diorite, gabbro, rhyolite, quick lime, or lime stone. 
     
     
         16 . The infill of  claim 14 , wherein 90 percent of the rock dust by weight has a particle size of 4 to 125 micrometers in diameter. 
     
     
         17 . A method of preparing a synthetic turf system, the method comprising:
 dispersing rock dust over a top portion of turf fibers, wherein the rock dust includes silicate rock, igneous rock, or reactive rock that forms a carbonate or bicarbonate with rainwater traveling through one or more infill layers.   
     
     
         18 . The method of  claim 17 , further comprising:
 grooming the rock dust into the one or more infill layers of the synthetic turf system, between the turf fibers, at a backing of the synthetic turf system.   
     
     
         19 . The method of  claim 17 , further comprising:
 preblending the silicate rock, igneous rock, or reactive rock with organic particles, rubber particles, elastomer particles, coated particles, or thermoplastic particles prior to dispersing the rock dust over the top portion of the turf fibers.   
     
     
         20 . The method of  claim 17 , further comprising:
 measuring an aspect of the synthetic turf system, including a thickness of an infill layer, an acidity of rainwater at the infill layer, or a quantity of silicate rock, igneous rock, or reactive rock present in the infill layer; and   dispersing a predetermined quantity of the rock dust over the top portion of the turf fibers as a top dressing based on the measured aspect.