Nanomaterials derived from plant extracts may prove more effective than chemically synthesized nanoparticles Source: University of South Australiain remediating oil-sludge contaminated soil. University of South Australia researchers demonstrated that a material derived from green mango peel extract and iron chloride breaks down toxins in oil sludge through chemical oxidation, leaving decontaminated materials and dissolved iron as the end-products.

The zerovalent nanoparticles removed over 90% of total petroleum hydrocarbons during a one-week trial. The researchers indicated that surface capping of the synthesized material could enhance activation, as capping through the controlled release of ferrous ion compared to synthesized nanoscale zerovalent iron/carbon might prevent scavenging of sulfate radicals.

According to lead researcher Dr. Biruck Desalegn, “Our research uses the waste part of the mango — the peel — to present an affordable, sustainable and environmentally friendly treatment solution for oil sludge.”