Add Yahoo as a preferred source to see more of our stories on Google. Kieran Mitchell, CEO of Caribou Biofuels in Salida, Calif., talked about using walnut shells in activated-charcoal filters on Dec.

Researchers then optimized walnut shells for that purpose by cleaning, treating, polishing and cutting them into precise shapes. By connecting four WEG units—each one comprised of shells, water ...

Scientists from the University of Nottingham and CSIRO Australia have developed a cutting-edge model to evaluate the energy efficiency of walnut and pistachio shells as low-carbon fuels and better ...

One of the biggest benefits of walnut cat litter is that it’s an environmentally friendly choice. The walnut shells are biodegradable and natural, and as a food industry byproduct, they would ...