| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| zengirl2 | "For a project I was looking at toxins in water and read about sunflower stalks being used for this purpose. There was even a startup in NJ, but not..." | Read more » | almost 7 years ago | |||
| gretchengehrke | "Hmm. This is surprising to me too. Iron-rich clay can readily adsorb arsenic under oxygen-rich conditions (this is actually the root of Bangladesh,..." | Read more » | almost 7 years ago | |||
| stevie | "interesting! I've seen people using clay to filter water in Nicaragua, but I don't have an understanding of how that worked. " | Read more » | almost 7 years ago | |||
| Ag8n | "I'm very surprised. I've spent many hours analyzing incoming raw material ( often times clays) usually for heavy metals. Clays are often the sour..." | Read more » | almost 7 years ago |