Solving Agricultural Waste: An Integrated Cascading Solution for Walnut Shells 

The global walnut industry generates vast amounts of hard shells annually, often discarded as waste. Now, an innovative multi-stage solution transforms this burden into valuable resources! 

After extracting precious bioactive compounds, the remaining residue undergoes pyrolysis to produce high-quality biochar. Research shows an impressive ~39% yield at 400°C! This sustainable biochar effectively adsorbs heavy metals and reduces dye concentration in water .

Turning agricultural waste into powerful environmental solutions - that's circular economy in action!