Fig. 4: Soil characterization after HET treatment.
From: High-temperature electrothermal remediation of multi-pollutants in soil
a Soil type of raw soil and treated soil based on particle size: clay (<2 μm), silt (2 to 50 μm), and sand (>50 μm). b XRD patterns of raw soil and HET-treated soil. The triangle and dot denote quartz and calcite, respectively. c XRF-measured percentage of metal oxide composition of raw soil and HET-treated soil. d Pictures of water infiltration test at t = 0 min (left) and 1 min (right) for raw and HET-treated soil. e Liquid level varied with time for raw soil, and HET-treated soil. f Boxplot with individual data points of water infiltration rates for raw soil and HET-treated soil; N = 6. Center line, median; box limits, upper and lower quartiles; whiskers, 5th and 95th percentiles. g Picture of the growth of broccoli on raw soil and 50% treated soil. h Gemination rate of broccoli using raw soil and HET-treated soil, with or without vermiculite additive. i Exchangeable soil nutrient content change during the HET process. c0 and c are the concentration of nutrients in raw soil and HET-treated soil, respectively. The error bars denote SD where N = 3.
