Fig. 3: Removal of PAH in soil by graphitization.
From: High-temperature electrothermal remediation of multi-pollutants in soil
a UV-Vis absorption spectra of extracts from pyrene-contaminated soil and r-Soil after repetitive high-temperature electrothermal (HET) pulses. Inset, the chemical structure of pyrene. b The content of pyrene in soil varied with repetitive HET pulses. c UV-Vis absorption spectra of extracts from fluorene-contaminated soil and r-Soil after repetitive HET pulses. Inset, the chemical structure of fluorene. d The content of fluorene in soil varied with repetitive HET pulses. e UV-Vis absorption spectra of extracts from benz[a]anthracene-contaminated soil and the r-Soil after repetitive HET pulses. Inset, the chemical structure of benz[a]anthracene. f The content of benz[a]anthracene in soil varied with repetitive HET pulses. The safe contents in b, d, and f denote the preliminary remediation goals (4). The error bars in b, d, and f denote the SD where N = 3.
