Listed below are recent posts across all of CalRecyle's blogs.

  • Yolo County Prepares for SB 1383 Implementation with Launch of New Anaerobic Composter

    organic food scraps and hands holding compost

    Yolo County began operating a new anaerobic composter on Oct.1 that can recycle 52,000 tons of organic waste each year into compost, biofuel, and electricity. 

     The facility will keep that organic material out of the county landfill. In landfills, organic waste decomposes and generates methane, which is a major contributor to climate change.

     Instead, food waste, grass clippings, and other organic material collected from local businesses and residents is delivered to the anaerobic composting facility, a 10-acre spot with seven “cells,” at the Yolo County Central Landfill site. 

     When the organic material is delivered to this site, it is ground up and deposited into cells. Each cell is sealed by spraying the surface with a mixture of cement, fibers, and polymer. Once the bacteria-rich liquid is pumped into the cell, the anaerobic digestion process takes place, and in less than six months, biogas is finally produced.

     “Moisture is removed from the biogas produced, and it’s injected into an internal combustion engine that burns the gas, which creates electricity,” said Ramin Yazdani, Director of Yolo County Integrated Waste Management.  “The electricity goes on the grid and is sold to SMUD (Sacramento Municipal Utility District).”

     After methane production has dropped off, the is operated aerobically, utilizing the aeration piping system. Air is injected into the cells to aerate the digestate material for a two-week aerobic digestion phase. This creates compost. 

     The material is then excavated, cured, and screened of contamination. Once the process is complete, the county will sell the compost to residents and businesses. 

     Compost has many beneficial uses, including as a soil amendment and in erosion control. Learn more about compost on our website.

     In 2007, Yolo County received a $200,000 CalRecycle grant to run a pilot project that broke down 2,000 tons of organic waste in a smaller cell.

     “That created the basis of our current design,” Ramin said, “and it showed us operational challenges that we had to learn from in order to design and operate a better system.”

    Posted on In the Loop by Syd Fong on Nov 18, 2019

  • California Resource Recovery Association: A Culture of Zero Waste

    CalRecycle staff speaking at podiums, speaking to conference members, and an outdoor group photo.

    Since 1974, the nonprofit organization California Resource Recovery Association has been working toward a more sustainable California through promoting product stewardship, waste prevention, and recycling. The group’s annual conference for which we are a sponsor, brings together cities, counties, councilmembers, businesses, nonprofit organizations, and industry professionals to network and discuss environmental issues. Every year, CalRecycle staff and guest speakers offer a cornucopia of information about policies, practices, and studies at comprehensive educational and plenary sessions.

    At this year’s conference, we participated in four panels on topics ranging from e-waste and grants to statewide recycling to educate attendees about upcoming regulations, funding programs, and waste management practices. We even got to meet Ryan Hickman, the 10-year-old mini-mogul who has taken the recycling world by storm by starting his own business at the age of 3! Other speakers included Timothy Bouldry of the International Solid Waste Association, which runs a scholarship program for children living in dumpsites across the world; and Froilan Grate, who is the executive director of GAIA Philippines, which educates and promotes community-based waste management and construction of material recovery facilities.

    Posted on In the Loop by - TC Clark on Aug 22, 2019

  • CalRecycle Grant Recipient Preventing Food Waste

    CalRecycle has grants to help clean up illegal dumping sites, reduce greenhouse gas emissions, and provide assistance for beverage container recycling. Check out this video to see how this grant recipient is using its award to prevent food waste.

    CalRecycle Awarded an Organic Waste Grant to Napa Recycling and Waste Services
    Posted on In the Loop by TC Clark on Jul 15, 2019