I'm curious about the potential benefits of using biocoals, charcoal, and wood ash in gardening. I've heard that these materials might not only absorb microplastics in the soil but also help spread nutrients, reduce harmful bacteria, and support plant growth. Since microplastics are positively charged and charcoal is negatively charged, it seems like charcoal might trap these plastics, preventing them from affecting plant roots. However, I'm wondering what happens when the charcoal breaks down. Does it take the microplastics with it, or does it just bind them so they're less harmful? If I aerate my soil, will it mix everything back up, or does it matter if the charcoal is keeping the microplastics contained?
1 Answer
It's important to note that biochar functions more like a filter than a capture method. It won’t magnetically attract microplastics; something like groundwater needs to push those particles through it. Plus, to effectively remove microplastics, you would have to take out the biochar itself. It's definitely worth understanding that studies focus more on the health impacts of microplastics in soil rather than just their presence in plants. Elevating soil health can sometimes be a better path—like nurturing beneficial microorganisms (mycorrhizae) that support plants. The ecosystem of beneficial bacteria in healthy soil is like the bacteria in our own gut health—integral to nutrient absorption and plant health!
Noted! I'm new to all this, but I want to learn more about enhancing soil health. Thanks for the insights!