Fine-particle separation in heavy metal soil remediation using innovative hydrocyclone technology.

Heavy metal pollution in soils poses significant threats to ecosystems and human health. Traditional remediation methods (such as phytoremediation, thermal treatment, and electrokinetic remediation) are frequently limited by high costs and low efficiency. This study presents a novel approach using a small-scale hydrocyclone designed through numerical simulations to effectively separate fine-particle-contaminated soil.

PAHs removal by soil washing with thiacalix[4]arene tetrasulfonate.

Remediating soil contaminated with polycyclic aromatic hydrocarbons (PAHs) presents a significant environmental challenge due to their toxic and carcinogenic properties. Traditional PAHs remediation methods-chemical, thermal, and bioremediation-along with conventional soil-washing agents like surfactants and cyclodextrins face challenges of cost, ecological harm, and inefficiency. Here we show an effective and environmentally friendly calixarene derivative for PAHs removal through soil washing.