Climate & Environment
New Orleans Glass Recycling Program Diverts Over 12 Million Pounds to Coastal Restoration
A New Orleans initiative launched in 2020 has turned discarded glass bottles into sand that can be used for coastal restoration. Glass Half Full, founded by Tulane University students Franziska Trautmann and Max Steitz, began as a small backyard operation and has grown into a larger recycling program. In February 2026 Tulane University reported that the project had diverted more than 12 million pounds of glass from landfills. The organization collects glass through residential and commercial pickups and drop‑off programs, then processes it at its facility. The operation can handle about two tons of glass per hour, producing sand and gravel for various industries, with coastal restoration as a major focus.
The project was born from the founders’ frustration with the lack of glass recycling infrastructure in New Orleans. Community support helped expand the program from a small machine to a larger operation capable of handling greater volumes. The recycled material now has applications beyond coastal work, including construction and disaster relief.
Louisiana’s coastline is losing land, making the search for restoration materials critical. Traditional projects use sediment dredged from the Mississippi River, but researchers are exploring whether recycled glass can supplement those materials. In April 2026 Tulane researchers described an experiment involving four constructed islands east of New Orleans. Two sets of islands use dredged river sand, while the other two combine river sand with recycled glass sand produced by Glass Half Full. Researchers are studying vegetation development on the different surfaces.
The experiment is part of a broader research effort called ReCoast, which brings together scientists from ecology, engineering, and coastal science to investigate how recycled glass sand can be used safely and effectively in coastal restoration. Recent Tulane research has focused on growing coastal cypress and other plants in recycled glass sand. Findings indicate that some wetland plants do not thrive in glass sand alone, leading researchers to test mixtures that include nutrient‑rich Mississippi River sediment and beneficial bacteria and fungi.
The goal is to create conditions that allow plants to establish and eventually stabilize newly restored areas. Once vegetation is established, roots help hold sediment together and create habitat, enabling constructed areas to develop into functioning wetland ecosystems.
Glass Half Full has already collaborated with Tulane researchers and other partners on restoration projects in southeast Louisiana, including work at Big Branch Marsh National Wildlife Refuge and with the Pointe‑au‑Chien Tribe in areas affected by Hurricane Ida.
The program’s growth demonstrates how a material traditionally treated as waste can be redirected toward a local environmental need. Instead of bottles traveling to a landfill, they are collected, processed, and transformed into a material that researchers are testing for use in wetlands and other restoration projects. The scale has changed considerably since 2020; Tulane University reports that Glass Half Full has now diverted more than 12 million pounds of glass from landfills while continuing to process millions of pounds each year. The work does not mean recycled glass can replace every source of sediment or solve Louisiana’s coastal land‑loss challenges on its own, but researchers are testing where the material can be useful, how it should be mixed with natural sediment, and which plants can establish successfully in it. For New Orleans, however, the premise remains strikingly direct: bottles that once represented a waste problem can be transformed into sand and put back to work. Six years after Glass Half Full began, its millions of pounds of diverted glass are becoming part of a much larger experiment in turning everyday waste into a resource for Louisiana’s changing coastline.