Original ResearchPublished 1 September 2026Vetiver biochar application for heavy metal sequestration in water treatment: bridging perfumery waste and environmental sustainabilitySameer Neve · Viravid Na Nagara · Zhiming Zhang · Rupali Datta · Dibyendu SarkarFrontiers in Environmental Chemistrydoi 10.3389/fenvc.2026.1912197